Dwyer 40M2-40 Series 40M2 Digital Temperature Controller Instruction Manual

Dwyer 40M2-40 Series 40M2 Digital Temperature Controller

Specifications

• Model: Series 40M2 Digital Temperature Controller
• Sensor Input: RTD, thermocouple, thermistor, current, or voltage
• Interface: TTL/RS-485 serial interface or EVlink BLE or Wi-Fi module
• Power Supply: 115-230 VAC in 40M2-20, 12-24 VAC/DC in 40M2-40
• Analog Output: 0-10 V/PWM reference multi-purpose regulation
• Continuous Current: 12 A

Installation Instructions

1. Mount the unit away from vibration, impacts, water, and corrosive gases.
2. Avoid placing temperature probe cables near power cables.
3. Use screw terminal blocks for wires up to 14 AWG (2.5 mm2) and pico-blade connectors.
4. Minimize electromagnetic interference by separating power cables from signal cables.

Initial Setup

1. Follow the installation instructions provided.
2. Wire the device according to the wiring section.
3. The device will perform a power-on self-test upon applying power.
4. Configure the device based on the SETTING CONFIGURATION PARAMETERS section.

User Interface and Main Functions

• Switching the Device On and Off: Press the POWER key for 4 seconds. The display will show the P5 value when turned on.
• Displaying the Number of Start-ups of the Relay: Press the down key for four seconds to view this information.

FAQ

• Q: How do I change the set point temperature?
  A: To change the set point temperature, navigate to the SP parameter in the configuration menu and adjust the value accordingly.

The Series 40M2 Digital Temperature Controller accepts a variety of inputs for temperature measurements and set points up to 999°F/537°C. Observing the current status of the controller is made easy with the 3-digit, multi-color LED display that has alarm and output symbols. For added versatility, the temperature units can be field selected for °F or °C. A flashing alarm informs users when the current temperature exceeds preset limits. The On-Off/PID and PID with auto-tuning provide accurate and reliable control in complex applications. The Modbus® protocol TTL slave port can be used to communicate over a TTL/RS-485 interface. When programming multiple units, the 40X2-K programming key is available to reduce setup time.

INSTALLATION

Note:
The unit must be mounted away from vibration, impacts, water and corrosive gases.

• Cut hole in panel 2-51/64 x 1.9/64 in (71 x 29 mm).
• The thickness of the panel must be between 1/32 and 5/64 in (0.8 and 2.0 mm).
• Insert the unit into the hole from the front side of the panel.
• Slide the mounting bracket securely against the panel from the rear of the unit.
• A wiring diagram is displayed on top of the switch.

SPECIFICATIONS

• Sensor Input: RTD, thermocouple, thermistor, current, or voltage. 1 digital multipurpose dry contact.
• Multipurpose Input: Dry contact 3.3 V, 1 mA (not available if sensor input is configured for Pt 100, Pt 1000, or Ni 120 3-wire input).
• Sensor Input Types: Current: 0-20 mA/4-20 mA, configurable; Voltage: 0-10 V/2-10 V, configurable; PTC probe: -58 to 302°F (-50 to 150°C); NTC probe: -40 to 230°F (-40 to 110°C); PT100 probe: -148 to 999°F (-100 to 650°C); PT1000 probe: -148 to 999°F (-100 to 650°C); Ni120 probe: -112 to 572°F (-80 to 300°C); J
• *T/C:* -130 to 999°F (-90 to 700°C); K T/C: -130 to 999°F (-90 to 999°C).
• Output: 0-10 VDC or PWM (12-24 VAC/DC model needs to be powered @ 24 VAC/DC for 0-10 VDC or PWM).
• Control Type: On-Off/PID, PID with auto-tuning.
• Power Requirements: 115-230 VAC or 12-24 VAC/DC depending on the model.
• Communication: TTL/RS-485 interface, Modbus® protocol port for programming or BMSF.
• Display: 3 digit LED display.
• Resolution: 1°F (0.1°C) for thermocouples; 1°F (0.1°C) for all other models.
• Relay (K1) Output: 16 A in-rush res. @ 250 VAC, SPST, type 1.
• Dry Contact: One multi-purpose, 3.3 V, 1 mA rating.
• Alarm: Built-in buzzer.
• Temperature Limits: Operating: 23 to 131°F (-5 to 55°C).
• Humidity Limits: 10-90% RH, non-condensing.
• Storage Temperature: -13 to 158°F (-25 to 70°C).
• Weight: 2.3 oz (65 g).
• Front Panel Rating: IP65.
• Compliance: CE, UKCA, cURus.
  • Upper range limited by 3-digit display.

WIRING

Avoid installing the temperature probe cables near any power cables. Maximum cable length of 10 m (32.8 ft) for all cables, except for the PWM analog output which is 1 m. A temperature offset adjustment may be made using the CA1 parameter. Connection methods include fixed and plug-in screw terminal blocks for wires up to 14 AWG (2.5 mm2) and pico-blade connectors.

NOTICE
To reduce any electromagnetic interference, mount the power cables as far away as possible from the signal cables.

• Disconnect the power supply before carrying out any type of maintenance.

INITIAL SETUP

1. Install the unit with the provided instructions above.
2. Electrically wire the device as described in the wiring section. A power-on self-test will begin once power is applied. This test will take a few seconds and the display will switch off when it’s complete.
3. Configure the device as shown in the section SETTING CONFIGURATION PARAMETERS. The recommended parameters for first-time use are listed in the chart below:

USER INTERFACE AND MAIN FUNCTIONS

Switching the Device On and Off
Press the POWER key for 4 seconds. When the display is switched on, the display will show the P5 value.

Unlocking the Keypad
Touch any key for one second, until the display shows “UnL”.

Setting the Set Point (If u0=0,3 or 4)

Setting Set Point 1 and Set Point 2 (if u0=1 or 2)

PID Control Activation with Auto-tuning (if r20=1, default)

Silencing the Buzzer (if A13 = 1)
Touch any key. If u1, u2, or u3 = 3, the alarm output is deactivated.

ADDITIONAL FUNCTIONS

Displaying/setting the value delivered by the analog output.

Displaying the number of start-ups of the relay.

Displaying the temperature detected by the compressor probe.

Displaying the temperature detected by the regulation probe.

SETTINGS

Setting Configuration Parameters

Restoring to Default Factory Settings and Saving Customized Settings

FUNCTIONAL MODES

On-Off Operating Logic

1. One regulator
2. Two regulators with two independent set points Cold mode regulation set point 1 (r5 = 0) and cold mode regulation set point 2 (r10 = 0).

Neutral zone regulation (u0 = 3)

Two-step regulation (u0 = 4) Cold mode (r5 = 0)

Operation with an analog output proportional to regulation temperature

Note: ua = 1, default

Parameter Description

Parameter

| Description| Units| Range of Options|

Factory Setting

---|---|---|---|---
SP| Setpoint| Degrees| r1 to r2| 0.0
SP2| Set point 2| Degrees| r7 to r8 (not avail if u0=0,3 or 4)| 0.0
CA1| Probe adjustment| Degrees| -25 to 25 C/F| 0.0
P0| Type of input probe| Option| 0-PTC, 1-NTC, 2-J Type, 3-K Type, 4-3 wires Pt 100, 5-2| 2
 |  |  | wires Pt 100, 6-3 wires Pt 1000, 7-2 wires Pt 1000, 8-4 to 20|
 |  |  | mA, 9- 0 to 20 mA,10-2 to 10 V, 11-0 to 10 V, 12-3 wires Ni|
 |  |  | 120, 13-2 wires Ni 120|
P1| Decimal point enable| Option| 0-disable,1-enable if P0=2 or 3, not effective if P0=8,9,10 or| 0
 |  |  | 11, the position of decimal point 0-n/a, 1 tens digit|
P2| Engineering units| Option| 0-C, 1-F, 2-%, 3-bar, 4-blank, options 2, 3 and 4 effective only| 0
 |  |  | on LEDS and if P0=8,9,10 or 11|
P3| Minimum process input value| Counts| -199 to 999| 0.0
P4| Maximum process input value| Counts| -198 to 999| 100
P5| The value displayed during normal operation| Option| 0-probe temp, 1-set point (SP)| 0
P8| Display refresh time| Tenths of a| 0 to 250| 5
 |  | second|  |
u0| Operating logic| Option| 0 – 1 regulator, 2 – 2 regulators with SP2 relative to SP, 3 – 2| 0
 |  |  | regulators with independent SP & SP2, 3 – neutral zone|
 |  |  | regulation, 4 – 2-step regulation|
u1| K1 output configuration| Option| 0 – disabled, 1 – regulator 1, 2 – regulator 2, 3 – alarm| 1
uA| Analog output configuration| Option| 0 – disabled, 1 – proportional to probe temperature, 2 –| 1
 |  |  | regulator 1, 3 – regulator 2|
ub| Type of analog output| Option| 0 – 0-10VDC, 1 – PWM| 0
uc| Regulation temperature for the minimum analog output value| Degrees or| -199 to ud C/F/points| 0.0
 |  | Points|  |
ud| Regulation temperature for the maximum analog output value| Degrees or| uc to 199 C/F/points| 100
 |  | Points|  |
rA| PID control configuration| Option| 0 – disabled, 1 – regulator 1, 2 – regulator 2, effective only| 0
 |  |  | u0=1 or 2|
r0| Set point differential| Degrees| 1 to 99.9 C/F, if u0= 3 then cold mode regulation differential| 2.0
r1| Minimum set point value| Degrees| -199.0 C/F to r2| 0.0
r2| Maximum set point value| Degrees| r1 to 999 C/F| 350.0
r5| Cooling or heating| Option| 0-cooling, 1-heating| 0
r6| Differential for set point 2| Degrees| 1 to 99 if u0=3 then heating mode regulation differential| 2.0
r7| SP2 minimum value| Degrees| -199 C/F to r8| 0.0
r8| SP2 maximum value| Degrees| r7 to 999 C/F| 350
r9| Lock SP2 for adjustments| Option| 0 – no, 1 – yes| 0
r10| Regulator 2 heating or cooling operation| Option| 0 – cooling, 1 – heating| 0
r11| Digital input for SP| Degrees| -199 to 999 C/F (set point) + r11| 0.0
r12| Digital input for SP2| Degrees| -199 to 999 (set point 2) + r12| 0.0
r13| Neutral zone value| Degrees| 1 to 999 C/F If u0 = 4 then two steps| 5.0
r14| Proportional band| Degrees| 1 to 999 C/F| 50
r15| Integral action time| Seconds| 0 to 999| 60
r16| Derivative action time| Seconds| 0 to 999| 30
r17| Cycle time on for PID regulator PWM relay or analog output| Seconds| 1 to 999| 180
r18| Minimum time on for PID regulator PWM relay or analog output| Seconds| 0 to 240| 0
r19| Minimum time off for PID regulator PWM relay or analog output| Seconds| 0 to 240| 0
r20| Enable auto-tuning| Option| 0 – disable, 1 – enable| 1
r21| Maximum duration for auto-tuning| Minutes| 2 to 240| 240
C1| Minimum time between two power ons for regulator 1| Minutes| 0 to 240| 0
C2| Minimum time off and delay from power up of regulator 1| Minutes| 0 to 240| 0
C3| Minimum time on regulator 1| Seconds| 0 to 240| 0
C4| The behaviour of regulator 1 during probe alarm| Option| 0 – off, 1 – on| 0
C5| Minimum time between two power ons of regulator 2| Minutes| 0 to 240| 0
C6| Minimum time off and delay from power up of regulator 2| Minutes| 0 to 240| 0
C7| Minimum time on regulator 2| Seconds| 0 to 240| 0
C8| The behaviour of regulator 2 during probe alarm| Option| 0 – off, 1 – on| 0
A1| Temperature alarm 1 set point| Degrees| -199 to 999 C/F| 0.0
A2| Temperature alarm 1 type| Option| 0 – disabled, 1 – abs min, 2 – abs max, 3 – min relative to SP,| 0
 |  |  | 4 – max relative to SP|
A3| Temperature alarm 1 delay| Minutes| 0 to 999| 0
A4| Temperature alarm 2 set point| Degrees| -199 to 199 C/F| 0.0
A5| Temperature alarm 2 type| Option| 0 – disabled, 1 – abs min, 2 – abs max, 3 – min relative to SP2,| 0
 |  |  | 4 – max relative to SP2|
A6| Temperature alarm 2 delay| Minutes| 0 to 999| 0
A7| Temperature alarm delay upon set point modification & power on| Minutes| 0 to 999| 0
A8| Temperature alarm delay after silencing and persistent alarm| Minutes| 0 to 999| 0
 | condition|  |  |
A9| Enable alarm output logic| n/a| 0- with alarm active, 1 with alarm not active| 0
A11| Temperature alarm switch off from set point| Degrees| 1 to 99| 2.0
A13| Enable alarm buzzer| Option| 0-disable, 1-enable| 1
i5| Multi-purpose input function|  | 0-disable, 1-alarm iA, 2-alarm iA+both regulators off, 3-alarm| 0
 |  |  | iA1 & regulator 1 off, 4-alarm iA2 & regulator 2 off, 5-switches|
 |  |  | the device on/off, 4-modifies SP & SP2|
i6| Multi-purpose input activation| Option| 0-contact closed, 1-contact open| 0
i7| Multi-purpose input alarm delay| Seconds| 0 to 999| 0
POF| Enable the “ON/Standby” button| Option| 0-disable, 1-enable| 1
PAS| Set password| Number| -99 to 999| -19
PA1| Set first-level password| Number| -99 to 999| 426
PA2| Set second-level password| Number| -99 to 999| 824
bLE| Enable Bluetooth| Option| 0-disable, 1-enable| 1
rE0| Data logger sampling interval| Minutes| 0 to 240| 15
LA| Modbus® protocol address| Number| 1 to 247| 247
Lb| Modbus® protocol baud rate| Option| 0-2,400 baud, 1-4800 baud, 2-9600 baud, 3-19,200 baud| 3
 |  |  | even|

ALARMS

ALARMS

Code| Description| Reset| How to Correct
Pr1

AL1 AL2

iA iA1 iA2 tu0 tu1

| Compressor probe alarm

Temperature 1 alarm

Temperature 2 alarm Multi-purpose input alarm

Regulator 1 protection alarm Regulator 2 protection alarm Auto-tuning alarm failed Auto-tuning timeout alarm

| Automatic

Automatic Automatic Automatic Automatic Automatic Manual Manual

| Check P0

Check integrity of the probe Check electrical connection Check A1, A2 and A3 Check A4, A5 and A6 Check i5 and i6

Check i5 and i6 Check i5 and i6 Touch any key

Touch any key, check r21

MAINTENANCE/REPAIR

• Upon final installation of the Series 40M2, no routine maintenance is required. The Series 40M2 is not field serviceable and is not possible to repair the unit. Field repair should not be attempted and may void the warranty.
• This symbol indicates waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Check with your Local Authority or retailer for recycling advice.

WARRANTY/RETURN

Refer to “Terms and Conditions of Sale” in our catalog and on our website. Contact returns@dwyermail.com to receive a Return Materials Authorization number before shipping the product back for repair. Be sure to include a brief description of the problem, PO#/Order#/or Invoice# that this unit was purchased on plus any additional application notes.

DWYER INSTRUMENTS, LLC
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

• Phone: 219-879-8000
• Fax: 219-872-9057
• Web: www.dwyer-inst.com
• e-mail: info@dwyermail.com.

©Copyright 2023 Dwyer Instruments, LLC. Modbus® is a registered trademark of Schneider Electric USA, Inc.

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