FW MURPHY S1501 Selectronic Micro Controller Annunciator

Installation

In order to consistently bring you the highest quality, full-featured products, we reserve the right to change our specifications and designs at any time. The latest version of this manual can be found at www.fwmurphy.com.

Please read the following information before installing.

BEFORE BEGINNING INSTALLATION OF THIS FW MURPHY PRODUCT:

• Read and follow all installation instructions.
• A visual inspection of this product before installation for any damage during shipping is recommended.
• Disconnect all electrical power to the machine.
• Make sure the machine cannot operate during installation.
• Follow all safety warnings of the machine manufacturer.
• Please contact FW MURPHY immediately if you have any questions.

Product Description

The Series S1501 system is a microprocessor based alarm, shutdown, and control system with tachometer/hour meter function. It tells in alphanumeric characters which protective device has signaled an alarm or caused equipment shutdown. Application programming is completed at Murphy and can be changed in the field.
The system consists of:

• S1501 Head
• Power Supply – explosion proof
• Terminal Block Assembly, rail mount type, accommodates 32 sensors (2 needed for 64 sensor models)
• Flat Ribbon Cable – 36 inch (914 mm) to connect the terminal block to the head.
  The S1501 is powered from 120 VAC or 12/24 VDC. It is approved for Class I, Div. 1, Groups C & D areas.

S1501 Head

The Head is the brain of the micro-controller system. It contains a microcomputer, an alphanumeric display and keypad for operator access to field adjustable functions, and a communication port: RS232 or RS485 (Modbus RTU slave). This port allows for remote control functions such as Start/Stop, Load/Unload, etc., and for access to S1501 data registers.

Alphanumeric Display
The S1501 Head displays each mode of operation. The display is a dot matrix alphanumeric 32-character display arranged in two lines (each with 16 characters). By observing the monitor, the operator can determine the operating status of the control system.

Power Supply
An explosion-proof enclosure designed for Class I, Division 1, Groups C & D hazardous locations contains the supply voltage conditioning circuits, head power supply, and the intrinsically safe barriers for isolation between the power supply and the low energy head circuits. The power supply accepts 120 VAC, 50-60 Hz and/or 12-24 VDC input power.
12-24 VDC power can be used as primary power or as a backup source of power when120 VAC is used.

Control Relays
The power supply has seven control relays to provide form “C” SPDT outputs for control functions of either the engine or electric motor application.

Terminal Block Assembly
Each sensor input terminal block consists of a 64-position, 32 pair input rail-mount terminal block for interface of panel or field-mounted end devices. For Class I Division 1 areas, end devices must be non-energy storing devices, such as mechanical switches with dry contacts.
The terminal block is used for Normally Open sensors (one wire close to ground), and/or Normally Closed sensors (two wires).

Ribbon Cable
A 36 in. (914 mm) flat ribbon cable is required for connection of the S1501 head and the sensor input terminal block. The cable is supplied with two D-sub 37 PIN connectors at each end of the cable.

Power and Control Cable
The S1501 is connected to the power supply via the Power and Control Cable (15-conductor shielded cable, 72 in. [1.81 m] long). The cable is factory- sealed on the power supply end, and has a 15-pin, D-sub connector on the S1501 Head end.

Sensor Inputs
User-selectable Sensor Input types (Shutdown or Alarm Only) are available for each sensor.
The sensor inputs are identified as follows:

Class A: Inputs are operative (armed) all the time.
Class B1 : Inputs are enabled after the first preset Start-Run time period.
Class B2 : Inputs are enabled after the second preset Start-Run time period.
Class C : Inputs are armed after the fault has been cleared for 2 seconds.
Class P : Armed after the Load Relay has energized and the process time has expired.
Class ESD : Emergency Stop overrides the test lockout timer.

Permissive Function
This function was designed to monitor pre-lube pressure input. Terminal 32 of the sensor terminal block is reserved for a permissive pre-lube input. The pressure signal can be obtained from a pressure switch with normally open or normally closed contacts that indicates whether or not sufficient oil pressure has been reached during pre-lubing. If permissive pressure has not been reached, the system will not allow start-up. If the Permissive Function is not required, install a wire jumper in Terminal 32 and set the Permissive Timer setting at zero.

Opto-Isolated Tach/Run Input
The S1501 features an opto-isolated tach/run input located within the explosion-proof power supply. This special input is used for Run Input Sensing from a CD ignition, Magnetic Pickup, Motor Auxiliary Signal, or AC or DC run signals meeting the opto-isolated Tach/Run input specifications (refer to the Specifications section of this manual).

NOTE: For tachometer sensing a magnetic pickup is recommended.

Built-In Barrier (within the Power Supply)
The S1501 power supply circuit is isolated from the Head by the intrinsically safe barrier located on the printed circuit board (power supply enclosure), between the power supply output and the power and control cable terminal block.
A fuse barrier mounted inside the Power Supply isolates the power output to the Head. Zener diode shunt barriers isolate the seven control outputs from the Head.

Hourmeter
A hour meter feature is available for the S1501 to record the engine or motor elapsed running time.

Installation

WARNING: Perform the mounting operation with power source off.
The S1501 Head was designed to be mounted within a weatherproof enclosure. It is intended for mounting in a flat panel.

First, cut a square mounting hole of 3-5/8 in. (92 mm) x 3-5/8 in. (92 mm).
Insert the Head from the front side of the panel and install the two mounting clamps, one on each side of the case, (see mounting clamp detail).
Secure the unit to the panel by tightening the clamps with a blade type screwdriver.

Mounting Dimensions

Sensor input terminal block TERMINAL BLOCK
(Rail mount type. 2 terminal blocks required for 64 sensor models) The tannins’ bloc* has (2) Mo rat mount damps for easy panel mounting. CNIounting rail is NOT suppled. Standard DIN mounting rat models: DIN 46277. EN50035. and EN50022 we—plated steel recanmended. Recommended length for the mounting rail: 7 inches (178 mm) minimum.

Typical Hazardous Areas Installation

WARNING: FOR HAZARDOUS APPLICATION REQUIREMENTS, THE S1501 COMPLETE SYSTEM MUST BE INSTALLED IN ACCORDANCEWITH THE NATIONAL ELECTRICAL CODE (NEC) CLASS I, DIVISION  1, GROUP D (ARTICLE 504) SPECIFICATIONS. SENSOR INPUTWIRES MUST BE SEPARATED A MINIMUM OF 2 IN. (51 MM) FROM OTHER WIRES. USE OF SENSOR INPUT WIRE TYPE CONDUIT IS RECOMMENDED.

S1501 System – Typical Hook Up

WARNING: PERFORM THE WIRING OPERATION WITH THE POWER SOURCE “OFF” AND THE AREA MADE NON-HAZARDOUS. MAKE SURE THE VOLTAGE AND CURRENT REQUIREMENTS ARE WITHIN THE S1501 SYSTEM RATINGS. CONDUIT IS REQUIRED TO PROTECT WIRES FROM DAMAGE. REFER TO THE SPECIFIC SYSTEM APPLICATION WIRING DIAGRAM SUPPLIED WITH YOURUNIT.

Head Connections

a. Interconnect the S1501 head and the power supply with the power and control cable, secure the connector in place by tightening the screws on each side of the connector.
b. Repeat step (a.) for the RS232/RS485 serial port (if applicable).
c. The sensor input connector(s) from the terminal block(s) plugs into the back of the Head. Secure by tightening the screws on each side of the connector.

Typical Power Supply Connections

WARNING: Do NOT route the power supply wiring and the sensor input lead wiring in the same conduit.

a. Conduit installation:

1. Remove power before opening power supply cover.

2. Install one 1/2 in. NPT or two 3/4 in. NPT conduits, from customer end of the Power Supply.
   Note: Follow NEC guidelines for maximum number of wires in conduit.

3. Install an approved explosion-proof seal in the conduit within 18 in. (457 mm) of Power Supply enclosure (seal unused conduit holes).
   Important: Green screw above conduit hole (power supply) is to attach equipment ground per NEC.
   b. Customer Installed Field Wiring: Install wiring to power supply through conduit installed in “step 2-a”.

4. Run wiring from the power source to the S1501 power supply.

5. Connect the 120 VAC to the two AC Power Input terminals. Connect equipment ground to green screw (see schematic below).

6. Connect the 12 or 24 VDC Positive (+) lead to Power Input terminal 12-24 DC.

7. Connect 12 or 24 VDC “DC(–)” lead to the GND terminal. (See “Power Supply Typical Wiring Diagram”.)

Normally Open Sensor Input Wiring

Wire each normally open sensor on top of the factory-supplied jumper. Loosen the screw and slide the wire lead into the terminal without removing the jumper (either side of jumper).

Normally Closed Sensor Input Wiring
Remove the factory-supplied jumper completely. Connect the two sides of the normally closed sensor to the two terminals of the terminal block.

NOTE : Switches connected to the S1501 Sensor Input Terminal Block must be dry contact mechanical switches.

Intrinsically Safe Barrier Wiring
Important (normally open sensor only): Secure area of hazardous conditions before opening barrier cover or operating sensor contacts.
a. Run Sensor switches wiring through conduit and isolate from the S1501 terminal block(s) with an explosion-proof barrier.
b. For wiring refer to the following typical wiring diagrams.

Normally Open System Barrier LCDT-ISB barrier (optional)

Normally Closed System Barrier
For normally closed non-intrinsically safe sensors, use an approved intrinsically safe barrier, and wire according to manufacturer’s instructions.

Power Supply – Typical Wiring Diagram

WARNING: Perform the wiring operation with the power source “OFF” and the area made non-hazardous. Make sure the voltage and current requirements are within the S1501 system ratings.  Conduit is required to protect wires from damage. Refer to the specific system application wiring diagram supplied with your unit.

NOTE 1: K-1 thru K-7 are relay outputs form “C” dry contacts.
D1 thru D8 are LED indicators.
D1= POWER ON;
D2=K1; D3=K2; D4=K3; D5=K4; D6=K5; D7=K6; D8=K7.
NOTE 2: Opto-isolated tach/run input jumper is shipped in the IGN position. IGN socket is used for negative or positive ground type CD ignitions. MPU socket is used for magnetic pickup or motor starter auxiliary contact not to exceed 120 Vrms.

Operation

Operating the S1501 Interface

Use the six membrane keys to scroll throughout the menus and to make changes to the System timers, Tachometer calibration, Overspeed, Underspend, Run Hourmeter (ETM), and Sensor Setup..

YES – key used for scrolling up (increment).
  NO – key used for scrolling down (decrement).
RESET – key used to reset alarms or shutdowns.
MODE – key used for mode and test time modes.
START/STOP – key used for Local mode start and stop signals.
ENTER – key used for entering/confirming set points and exiting menus

Sequence of Operations – Engine Mode

ENGINE APPLICATION| |
---|---|---
EVENT| DISPLAY| RELAY
K1| K2| K3| K4| K5| K6| K7
| | Lube| Crank| Ign.| Fuel| Load| Alar m| SD
WAITING ON START| | | | | | | |
Unit monitors for a valid start signal. Shutdown and Alarm relays are energized. * User can at this time, press the Mode key to modify desired setup tables. Class A inputs are scanned.| Waiting On Start ETM: xxxxx.x hrs| Off| Off| ** Off| Off| Off| On| On
Start signal received. Unit advances to Prelube cycle.| Waiting On Start ETM: xxxxx.x hrs| Off| Off| Off| On| Off| On| On
If an RPM signal is seen before the Start signal is pressed, a fault occurs.| Unexpected Engine Start!| Off| Off| Off| On| Off| Off| Off
PRELUBE CYCLE| | | | | | | |
Prelube cycle begins. Permissive timer starts. Lube relay energized.| LUBE CYCLE…**

Permissive x:xx

| On| Off| Off| Off| Off| On| On
Permissive time expires before Permissive signal* seen closed. Fault occurs. Lube relay is de-energized.| Permissive Failure| Off| Off| Off| Off| Off| Off| Off
Permissive signal closed. Prelube Cycle timer started.| LUBE CYCLE…

Prelube         x:xx

| On| Off| Off| Off| Off| On| On
Prelube Cycle timer times down to zero. Unit advances to Crank cycle.| LUBE CYCLE…

Prelube            00

| On| Off| Off| Off| Off| On| On
CRANK CYCLE| | | | | | | |
Crank Relay energizes. If the Run Delay Preset is > 0, the controller will wait for a Crank RPM permissive to proceed. If set to 0, this cycle is skipped| CRANK PERMISS…

Run Delay       x:xx

| On| On| Off| Off| Off| On| On
Run Delay time expires before RPM > 10 is seen. Fault occurs.| Engine Failure     To Crank!| Off| Off| Off| Off| Off| Off| Off
RPM > 10 is seen, or Crank Permissive cycle skipped. Cranking continues with purge timer started at preset time.| CRANK CYCLE…

Purge                 xx

| On| On| Off| Off| Off| On| On
Purge delay expires. Ignition relay is energized. Fuel On delay is started.| CRANK CYCLE…

Fuel Delay         xx

| On| On| On| Off| Off| On| On
Fuel On delay expires. Fuel relay energized. Crank timer started. The Controller will monitor for a Crank Disconnect RPM to advance to the Run Cycle.| CRANK CYCLE…

Crank                 xx

| On| On| On| On| Off| On| On
Crank timer expires before disconnect speed is reached. Unit goes into Rest cycle. Crank, Ignition, and Fuel relays are de-energized. When the Rest expires, the Crank Cycle will repeat.| CRANK CYCLE…

Rest                    xx

| On| Off| Off| Off| Off| On| On
All crank attempts exhausted. Crank timer expires. Disconnect speed not reached. Overcrank condition occurs. All relays de-energized.| Overcrank Shutdown!| Off| Off| Off| Off| Off| Off| Off
| | K1| K2| K3| K4| K5| K6| K7
---|---|---|---|---|---|---|---|---
| | Lube| Crank| Ign.| Fuel| Load| ALM| SD
RUN CYCLE| | | | | | | |
Crank Disconnect RPM reached. Crank relay de-energized. Class B1 Lockout, B2 Lockout and Load timers started. Class C shutdowns are allowed to arm.| Speed:     xxxxrpm Class-B1 x:xx| ****

Off

| ****

Off

| ****

On

| ****

On

| ****

Off

| ****

On

| ****

On

Class B1 and B2 Lockout timers expire. Elapsed time displayed. Unit monitors for stop condition.| Speed:                 xxxxrpm ETM: xxxxx.x hrs| Off| Off| On| On| Off| On| On
Load timer expires. Load relay energized. Process Lockout timer starts. When this timer expires, Class P shutdowns will be armed. User can press the Mode key to initiate the Test timer and test sensor inputs.| ****

Speed:                 xxxxrpm Test Timer                 5:00

| ****

Off

| ****

Off

| ****

On

| ****

On

| ****

On

| ****

On

| ****

On

IDLE CYCLE| | | | | | | |
Stop signal is seen. Load relay is de-energized. Class P shutdowns are disarmed. Idle timer is started.| Speed:                 xxxxrpm Idle x:xx| Off| Off| On| On| Off| On| On
ALARM FAULT| | | | | | | |
Alarm only input faulted. Alarm relay de-energized. Fault alternately displayed with previous message displaying the speed and run hours.| Low Coolant Level| ****

Off

| ****

Off

| ****

On

| ****

On

| ****

On

| ****

Off

| ****

On

S1501 Reset key pressed. Alarm relay is picked up. Unit continues to scans for fault or stop condition.| Speed:                 xxxxrpm ETM: xxxxx.x hrs| Off| Off| On| On| On| On| On
FAULT SHUTDOWN| | | | | | | |
Unit receives a fault at sensor #4 for instance. The Fuel Valve, Alarm, and Shutdown relays are de-energized.| Speed:                 xxxxrpm Ign. Gnd. xx| ****

Off

| ****

Off

| ****

On

| ****

Off

| ****

Off

| ****

Off

| ****

Off

Ignition ground delay expires. Ignition relay de-energized. Postlube cycle begins. Lube relay energized.| LUBE CYCLE…

Postlube          x:xx

| ****

On

| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

Postlube expires. Lube relay de-energized. Fault is displayed.| Low Compressor Oil Pressure| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

S1501 Mode key pressed. Shutdown type displayed.| Sensor Input #04 Class B1,Shutdown| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

S1501 Reset key pressed. Unit waiting on start input.| Waiting On Start ETM: xxxxx.x hrs| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

On

| ****

On

NORMAL STOP (AFTER IDLE CYCLE)| | | | | | | |
Stop signal received and idle timer expired. Ignition ground delay begins. Fuel Valve relay de-energized.| Speed:                 xxxxrpm Ign. Gnd. xx| Off| Off| On| Off| Off| On| On
Ignition ground delay expires. Ignition relay de-energized. Post lube cycle begins. Lube relay energized.| LUBE CYCLE…

Postlube x:xx

| ****

On

| ****

Off

| ****

Off

| ****

Off

| ****

Off

| ****

On

| ****

On

Post lube cycle timer expires. The Lube relay is de-energized. Unit returns to Waiting on Start.| Waiting On Start ETM: xxxxx.x hrs| Off| Off| Off| Off| Off| On| On

Sequence of Operations – Motor Mode

ELECTRIC MOTOR APPLICATION| |
---|---|---
EVENT| DISPLAY| RELAY
K1| K2| K3| K4| K5| K6| K7
| | Lube| Not Used| Motor| Cooler| Load| Alarm| SD
WAITING ON START| | | | | | | |
Unit monitors for a valid start signal. Shutdown and Alarm relays are energized. * User can at this time, press the Mode key to modify desired setup tables. Class A inputs are scanned.| Waiting On Start ETM: xxxxx.x hrs| Off| Off| Off| Off| Off| On| On
Start signal received. Unit advances to Prelube cycle.| Waiting On Start ETM: xxxxx.x hrs| Off| Off| Off| On| Off| On| On
PRELUBE CYCLE| | | | | | | |
Prelube cycle begins. Permissive timer starts. Lube relay energized.| LUBE CYCLE…

Permissive x:xx

| On| Off| Off| Off| Off| On| On
Permissive time expires before Permissive signal* seen closed. Fault occurs. Lube relay is de-energized.| Permissive Failure| Off| Off| Off| Off| Off| Off| Off
Permissive signal closed. Prelube Cycle timer started.| LUBE CYCLE…

Prelube         x:xx

| On| Off| Off| Off| Off| On| On
Prelube Cycle timer times down to zero. Unit advances to Wait On Run cycle.| LUBE CYCLE…

Prelube            00

| On| Off| Off| Off| Off| On| On
WAIT ON RUN CYCLE| | | | | | | |
Motor Relay energizes. Run delay and Cooler On Delays begin timing. The controller monitors for an electric motor auxiliary contact run confirmation.| Waiting On Run Run Delay       x:xx| On| Off| On| Off| Off| On| On
Run Signal not received before the delay expires, Fault occurs. All relays de- energize.| Motor Starter Failure!| Off| Off| Off| Off| Off| Off| Off
S1501 Reset key pressed. Unit waiting on start input.| Waiting On Start ETM: xxxxx.x hrs| Off| Off| Off| Off| Off| On| On
RUN CYCLE| | | | | | | |
Motor auxiliary contact seen closed. Lube relay de- energizes. Class B1 Lockout, B2 Lockout and Load timers started. Class C shutdowns are allowed to arm.| Motor Running… Class-B1          x:xx| Off| Off| On| On| Off| On| On
Cooler On delay expires. The Cooler relay energizes.| Motor Running… Class-B1          x:xx| Off| Off| On| On| Off| On| On
Class B1 and B2 Lockout timers expire. Elapsed time displayed. Unit monitors for stop condition.| Motor Running… ETM: xxxxx.x hrs| Off| Off| On| On| Off| On| On
Load timer expires. Load relay energized. Process Lockout timer starts. When this timer expires, Class P shutdowns will be armed. User can press the Mode key to initiate the Test timer and test sensor inputs.| Motor Running… Test Timer      5:00| Off| Off| On| On| On| On| On
IDLE CYCLE (COOLDOWN)| | | | | | | |
Stop signal is seen. Load relay is de-energized. Class P shutdowns are disarmed. Idle timer is started.| Motor Running… Idle x:xx| Off| Off| On| On| Off| On| On
ALARM FAULT| | | | | | | |
Alarm only input faulted. Alarm relay de-energized.

Fault alternately displayed with previous message displaying the speed and run hours.

| Low Coolant Level| Off| Off| On| On| On| Off| On
S1501 Reset key pressed. Alarm relay is picked up. Unit continues to scans for fault or stop condition.| Motor Running… ETM: xxxxx.x hrs| Off| Off| On| On| On| On| On
| | K1| K2| K3| K4| K5| K6| K7
---|---|---|---|---|---|---|---|---
| | Lube| Not Used| Motor| Cooler| Load| Alarm| SD
FAULT SHUTDOWN| | | | | | | |
Unit receives a fault at sensor #4 for instance. Motor, Cooler, Load, Alarm and Shutdown relays are de-energized. Postlube cycle begins. Lube Relay energized.| LUBE CYCLE…

Postlube          x:xx

| On| Off| Off| Off| Off| Off| Off
Postlube expires. Lube relay de-energized. Fault is displayed.| Low Compressor Oil Pressure| Off| Off| Off| Off| Off| Off| Off
S1501 Mode key pressed. Shutdown type displayed.| Sensor Input #04 Class B1,Shutdown| Off| Off| Off| Off| Off| Off| Off
S1501 Reset key pressed. Unit waiting on start input.| Waiting On Start ETM: xxxxx.x hrs| Off| Off| Off| Off| Off| On| On
NORMAL STOP (AFTER IDLE-COOLDOWN CYCLE)| | | | | | | |
Stop signal received and idle timer expired. Motor, and Cooler relays de- energized. Postlube cycle begins.

Lube relay energized

| LUBE CYCLE…

Postlube          x:xx

| On| Off| Off| Off| Off| On| On
Postlube cycle timer expires. The Lube relay is de- energized. Unit returns to Waiting on Start.| Waiting On Start ETM: xxxxx.x hrs| Off| Off| Off| Off| Off| On| On

System Set Up Menus

While the S1501 displays “Waiting On Start”, pressing the MODE key will access the SYSTEM SET UP menu. The following options are available:

• Timer Set Up
• Tach/Crank Set Up
• ETM Set Up
• Sensor Set Up

Timer Set Up – This set up screen allows you to preset the system timers. Zeroing out a
function’s timer will bypass that particular function.

Advanced Set Ups (password protected screens)
The following Set Ups are available only under ADVANCED SETUP mode.
Tach/Crank Set Up – This set up screen allows you to calibrate the internal tachometer with pulses per revolution and set the Overspeed, Underspend, Crank Attempt set points, and Crank Disconnect.
ETM Set Up – This set up screen allows you to preset the Elapsed Time Meter (ETM).
Sensor Set Up – This set up screen allows you to edit shutdown or alarm messages and also to edit the input sensor class (A, B1, B2, C, P, or ESD) and the action (Alarm only or Shutdown).
NOTE: Communications will be disabled while using the keypad to access the System Setup menu.

Editing System Set Up

Timer Set Up Menu
There are a number of Timers that the S1501 system uses to carry out the start/stop sequencing. With all shutdowns cleared, and the S1501 at the “Waiting On Start” prompt, press the ■ MODE key to gain access to the Timer Setup Menu.
TIMER SETUP
Permissive x:xx
This displays the timer preset in MM:SS format. Press ▲ UP/YES or ▼ DOWN/NO keys to increase or decrease the time. Press ■ RESET to zero the timer. Press ■ ENTER to accept and save the setting and advance to the next timer.
Repeat the procedure to preset all available timers.
NOTE: To bypass a particular function, zero out the corresponding timer.
For example, to bypass Prelube, zero out the Prelube timer.

Permissive x:xx
During the Prelube cycle, this is the preset time by which the Permissive input must be seen closed (NC system) or ungrounded (NO system). If the Permissive input is not satisfied, when the timer expires, a Permissive Failure fault shutdown will occur.
NOTE: Terminal 32 is dedicated for the Permissive Pressure Input. To bypass this function, install a jumper at terminal 32.
Prelube x:xx
During the Prelube cycle, this is the preset time for which the Lube relay remains energized after the Permissive input is satisfied, prior to starting.
Purge Delay x:xx
Timer to purge excess fuel out of the engine on a crank attempt. The Crank relay is energized with the fuel valve relay de-energized and the ignition relay de-energized.
Fuel Delay x:xx
Timer to delay energizing the fuel valve relay on a crank attempt to burn unspent fuel. The ignition relay is energized during this time.
Crank x:xx
Time duration for the crank attempt after energizing the crank, ignition, and fuel valve relays.
Rest x:xx
Time duration for the Crank Rest period after the Crank period expires. However, if the specified number of Crank attempts is exhausted, an Overcrank Shutdown occurs.
Run Delay x:xx

In Electric Motor applications (Pulses/rev = 0), this is the timer to gain the Motor Starter Auxiliary Run signal, after energizing the motor relay. If this signal is not seen before this timer expires, a “Motor Starter Failure” shutdown will occur.
In Engine applications (Pulses/rev > 0), this is the timer to gain RPM reading

10 before the Ignition and Fuel relays are energized. If this signal is not seen before this timer expires, an “Engine Failure To Crank” shutdown will occur. If set to 0, this RPM permissive is ignored.
Class-B1 x:xx
This timer locks out sensor inputs configured as Class B1 on startup.
Class-B2 x:xx
This timer locks out sensor inputs configured as Class B2 on startup.
Load x:xx
This timer delays energizing of the Load relay after starting, and is typically used as a warmup time.
Process x:xx
This timer locks out sensor inputs configured as class P after energizing the Load relay. This is typically used for Process alarms and shutdowns which do not clear until the unit has loaded.
Idle x:xx
This timer determines the length of time the system will run after de- energizing the Load relay after a stop signal is received. This is typically used for a Cooldown time period for the equipment.
Ign. Gnd. x:xx
In Engine applications (Pulses/rev > 0), this is the delay between de- energizing the fuel valve relay and de-energizing the ignition relay. This allows remaining fuel in the line to be burned off, prior to disabling the ignition system.
Postlube x:xx
After a stop or shutdown fault (non-ESD) this is the time for which the Lube relay will be energized for a Postlube cycle.
Cooler Dly x:xx
In Electric Motor applications ((Pulses/rev = 0), this timer delays energizing the cooler relay  after energizing the motor relay to reduce inrush current imposed on the power source for the AC motors.

Advanced Set Up Menu
To calibrate the Tachometer and Elapsed Time Meter, select Crank attempts, Modbus RTU address, and modify sensor input information, a password protected setup mode is available.
After the Timer Setup is complete, the LCD will read…
ADVANCED SETUP
Password XXXX
To Exit Setup quickly without entering the Advanced Setup at this point, press ■ RESET and ■
ENTER at the same time.
The first “X” will be blinking, to enter the password use the ▲ UP/YES or ▼ DOWN/NO keys to scroll through the characters. Press ■ RESET and ■ MODE to scroll between characters.
When the correct password is entered, press ■ ENTER to acknowledge. The following screen will be briefly displayed:
ADVANCED SETUP
PASSWORD OK!
If password is incorrect the screen will be the following:
ADVANCED SETUP
PASSWORD ERROR!
User will again be prompted to enter correct password. After 3 unsuccessful entries, the Advanced Set up is aborted and screen will return to “Waiting On Start”.
ADVANCED SETUP
Pulses/rev xx
Press ▲ UP/YES or ▼ DOWN/NO keys to increase or decrease the value. Press ■ ENTER to accept and save the setting and advance to the next setting.
Pulses/rev xx
To calibrate the internal tachometer, enter the pulses per revolution of the engine. To set the controller for an electric motor logic sequence, this setting must be set to “0”.
Enter either the number of teeth in the fly wheel if using a Magnetic Pickup, or use the following equation if using the Ignition input:
Pulses = 2Cylinders\Cycles
For instance, for an 8 cylinder, 4 cycle engine,
Pulses = 28\4 = 4
Attempts x
Engine sequence only-This is the number of allowable engine crank cycles before an Overcrank Shutdown occurs.
Disconnect xxxx
Engine sequence only-This is the RPM at which the crank relay de-energized and the engine is considered running.

Overspeed xxxx
Engine sequence only-This is the excessive speed RPM at which the S1501 signals an internal Overspeed Shutdown.
Underspeed xxxx
Engine sequence only-This is the low speed RPM at which the S1501 signals an internal Underspend Shutdown. This is not armed until the Class B1 timer expires.
ETM 1k Hr xx
Preset the Elapsed Time Hours thousands hours or use the RESET button to zero it.
ETM 100 Hr xx
Preset the Elapsed Time Hours hundred hours or use the RESET button to zero it.
ETM Secs Hr xx
Preset the Elapsed Time Hours seconds or use the RESET button to zero it.

Sensor Set Up
The S1501 system allows you to edit the Shutdown Message, Class Type and Shutdown  Action (Shutdown Alarm or Alarm only) for each Sensor Input. Class Type are defined as follows:
Class A, Shutdown
Class B1, Shutdown
Class B2, Shutdown
Class C, Shutdown
Class P, Shutdown
ESD Shutdown
Class A, Alarm
Class B1, Alarm
Class B2, Alarm
Class C, Alarm
Class P, Alarm
Ignore Point
Press ▲ UP/YES or ▼ DOWN/NO keys to select the input to modify. Select INPUT

0 to exit.

Press ENTER once the desired input is chosen, and the corresponding shutdown message will be displayed.
LOW OIL
PRESSURE
With the first character blinking you may change the character by pressing the UP/YES or ▼ DOWN/NO keys to scroll through available characters. Press MODE to move forward on character, or RESET to move backward. When the shutdown modification is completed, press ENTER to save the new message. The Sensor Class Type and function will now be displayed, for example:
SHUTDOWN TYPE
CLASS A SHUTDOWN
To change the Class Type and function, use the UP/YES or ▼ DOWN/NO keys until the desired combination of Class and Function is reached. Press the ENTER key to save and return to the Setup screen. Repeat as above for all Sensors Inputs and Messages to be edited.
Start/Stop Configuration
The S1501 system can be configured for Local and/or Remote Start-Stop. Start- Stop is configured via terminal block inputs TB30 (local), TB31 (Remote).
Keypad Start
Jumper installed in TB30. A valid sequence occurs when the ■ START/STOP key is pressed.
Likewise, while running, a valid stop sequence occurs when the ■ START/STOP key is pressed.

NOTE: A valid stop occurs when the ■ START/STOP key is pressed Regardless of the Start-Stop mode.
Local-Off-Remote (L-O-R) Switch
L-O-R switch installed across TB30 (Local) and TB31 (Remote). A valid sequence occurs when the L-O-R switch is placed in the Local position and the Start- Stop key is pressed OR the L-O-R is placed in the Remote position, and the Remote Start signal is seen. A valid Stop occurs when the L-O-R switch is placed in the OFF position, OR of in the Remote position and a Remote Stop is seen.
Remote Start-Stop
Jumper installed in TB31. A valid sequence occurs when a Remote Start signal is seen.
Likewise, a valid stop occurs when the Remote Stop signal is seen.
Maintain Start
Jumper installed in TB31. A valid sequence occurs when the Maintain Start signal is seen.
Likewise, a valid stop occurs when the Maintain Start signal is lost.

Typical Start/Stop Wiring

Modbus Start/Stop and Reset
The S1501 system can be started and stopped remotely through the Modbus communications port (RS232/RS485 serial port). Writing a “1” to the start/stop register (40010) will initiate a start. Writing a “Ø” to the start /stop register will initiate a stop. Writing “Ø” to the shutdown status register (40004) will cause a reset.

Modbus Integer Holding Registers

(0=OK, or terminal block number of Shutdown event…writable to 0 for Modbus Reset)_

System Internal shutdowns:

68 = Engine Overspeed (engine applications) 70 = Engine Underspend (engine applications) 72 = Overcrank (engine applications)

74 = Permissive Failure

76 = Motor Starter Failure (motor applications) 78 = Local Stop (by keypad)

80 = Unexpected Engine Start (engine applications) 86 = Loss of Tach Signal (engine applications)

88 = Loss of Run Signal (motor applications)

96 = Engine Failure To Crank (engine applications)

40005| Read| Relay Output Status (bitmapped Bit 0=K1 … Bit 1=K2, etc)
40006| Read| Inputs TB01-16 Status (bitmapped Bit 0=TB1 … Bit 1=TB2, etc)
40007| Read| Inputs TB17-32 Status (bitmapped Bit 0=TB17 … Bit 1=TB18, etc)
40008| Read| Inputs TB33-48 Status (bitmapped Bit 0=TB33 … Bit 1=TB34, etc)
40009| Read| Inputs TB49-64 Status (bitmapped Bit 0=TB49 … Bit 1=TB50, etc)
40010| Read/ Write| Start/Stop Register (writable for remote commands if Remote Mode on TB29 is closed and remote maintained start digital input TB27 not used. It is active for a write of “0” at all times to allow remote stopping, until a start signal is received again)
40011| Read/ Write| 40011 = Load/Unload Register (writable for resetting the Load relay after the LOAD relay has been energized by the program, and setting it again if it has been reset through Modbus. This resets and restarts the Process delay, at the same time as the Load relay is reset and set)
40012| Read| ETM (Elapsed Run Time Meter) Thousand Hours ( 0 – 99 )
40013| Read| State Bitmap

Bit 0 = “WAITING ON START” Bit 1 = “PERMISSIVE”

Bit 2 = “PRELUBE”

Bit 3 = “CRANK PERMISSIVE” Bit 4 = “PURGE”

Bit 5 = “FUEL DELAY” Bit 6 = “CRANK”

Bit 7 = “REST”

Bit 8 = “RUN DELAY”

Bit 9 = “LOAD DELAY (WARMUP)” Bit 10 = “LOADED”

Bit 11 = “UNLOADED”

Bit 12 = “IDLE (COOLDOWN)” Bit 13 = “IGN GND DELAY” Bit 14 = “POSTLUBE“

Bit 15 = “SHUTDOWN”

40014| Read| Alarm Status Enumeration (0=OK, or terminal block number of last alarm event)

Troubleshooting

WARNING: Do NOT open power supply until operations have been shut down and area has been rendered non-hazardous. Do NOT run sensor wires in conduit with any other wire. Do NOT apply voltage to any annunciator input terminals. Do NOT bundle sensor wires with any other wiring. Make sure the voltage and current requirements are within the S1501 system ratings.

Before going through the checklist below, refer to the connections and operation procedures. Also check your system wiring schematic.
If any problems persist after you have made these checks, consult your nearest Murphy facility.

Symptom: No display

• Check that the Power & Control cable is firmly connected to the back of the S1501. Check for damaged or broken wire.
• Check for power failure or power input shutdown.
• Check the 200 mA fuse within the S1501 power supply and replace if necessary.
  NOTE: If after all of the above has been done, and there is still no display, return the S1501 to Murphy for repair or replacement.

Symptom: Engine fails to start (Sensor switch fault display cannot be cleared.)

• Check that the Power & Control cable is firmly connected to the back of the S1501. Check for damaged or broken wire.
• Check that the sensor input cable connector (ribbon cable) is properly connected to the back of the S1501.
• Verify that the LED lights (within the power supply box) are lit indicating relays are functioning.
• Check that the wire leads on the terminal block under the Safety Barrier cover are connected and tight. (See drawing at right.)
• Measure the voltage between terminals 1 and 2 on the terminal block under the Safety Barrier cover (voltage should read between 5 – 6 VDC). Do this with the S1501 connected to the power supply, and with it disconnected. There should not be more than a 0.5 V difference between the readings with the S1501 connected and not connected.
• Check sensor wires with an ohmmeter and meg or high potential test only with wires disconnected from sensor terminal block.
  NOTE: If shutdowns still result, contact your nearest Murphy representative/dealer.

Specifications

Power Consumption

• 120 VAC (7.5 VA)
• 12 VDC (3.5 watts)
• 24 VDC (3.5 watts)
  Sensor Inputs
  32 or 64 N.O. and/or N.C. inputs such as Murphy Swichgage® instruments.
  Field selectable as a Class A, B1, B2, C, P or ESD for shutdown, alarm, or control function.
  NOTE: Sensor inputs 27 through 32 reserved for control functions.
  Outputs
  7-SPDT relay outputs, 5 A, 1/16 HP,
  125/250 VAC/ 1 A, 30 VDC
  NOTE: For hazardous areas an approved isolation barrier must be used between sensor switch and input terminals if the sensor output comes from any energy storing device such as a relay or transistor.

Adjustable Time Delays

• Permissive
• Prelube
• Purge
• Fuel
• Crank
• Run
• Class B1 Lockout
• Class B2 Lockout
• Process Lockout
• Idle/Cooldown
• Ignition Ground
• Postlube
• Cooler

Sensor Inputs Terminal Block
Rail mount DIN type; 32 terminals, screw type
Opto-Isolated Tach/Run Input
Magnetic pickup, 4.5 to 120 Vrms, 0-10 kHz. CD ignition, positive or negative ground, 100 to 300 VDC, 3-666 Hz.
12 to 125 VDC or 120 Vrms, 50/60 Hz may be used for run signals.
Operating Temperature s: 32 to 122°F (0 to
50°C)
Storage Temperatures : -4 to 158°F (-20 to
70°C)
Case : ABS plastic, 1/4 DIN (90 x 90 mm)
Communications
Factory configured for RS232; field-selectable for RS485.
Alphanumeric Display
2 lines, each line with 16 characters (32 characters total)

Power Supply Enclosure
Explosion-proof, Class I, Division 1. Intrinsically safe barrier built into the power supply, 120 VAC with 7 form “C” relay outputs for the following functions (with standard S1501):

• Lube
• Crank
• Ignition/Motor
• Fuel/Cooler
• Load
• Alarm
• Shutdown

Replacement Parts and Accessories

To order the S1501 system specify the model number for each individual component and accessory:

Approximate Shipping Weights / Dimensions
S1501 complete system:
28 lb. (12.7 kg) / 20x14x12.5 in. (508x356x218mm)
S1501H-32-2; S1501H-64-2; S1501CH-32-2; S1501CH-64-2:
2 lb. (0.907 kg) / 6x6x6 in. (152x152x152mm)
S1500TB32:
2 lb. (0.907 kg) / 12x7x4 in. (305x178x102mm)
S1500CA36; S1501PCA72:
2 lb. (0.907 kg) / 6x6x6 in. (152x152x152mm)
S1501PS-120-LC:
3 lb. (1.36 kg) / 12x7x4 in. (305x178x102mm)
S1501PS-120 and S1501PS-120-E:
22 lb. (9.98 kg) / 17x10x9.75 in. (431x254x248mm)

CUSTOMER SUPPORT

FW MURPHY PRODUCTION CONTROLS
SALES, SERVICES & ACCOUNTING
4646 S. HARVARD AVE.
TULSA. OK 74135

CONTROL SYSTEMS & SERVICES
105 RANOON DYER ROAD
ROSENBERG, TX 77471

MANUFACTURING
5757 FARINON DRIVE
SAN ANTONIO, TX 78749

DOMESTIC SALES & SUPPORT
VW MURPHY PRODUCTS
PHONE: 918 957 10030
EMAIL: INFO@FWMURPHY.COM
WWW.FWMURPHY.COM

FW MURPHY CONTROL SYSTEMS & SERVICES
PHONE: 281 633 4500
EMAIL CSS-SOLUTIONS@FWMURPHY.COM

INTERNATIONAL SALES & SUPPORT CHINA
PHONE: +86 571 87116 6060
EMAIL: INTERNATIONAL@FWMURPHY.COM

LATIN AMERICA to CARIBBEAN
PRONE: +19189571000
EMAIL INTERNATIONAL@FWMURPHY.COM

SOUTH KOREA PRONE: +82 70 7951 4100
EMAIL: INTERNATIONAL@FWMURPHY.COM

References

• FW Murphy Production Controls

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