ICM450A Programmable 3 Phase Line Voltage Monitors User Guide

: June 14, 2024
: ICM

Table of Contents

ICM450A Programmable 3 Phase Line Voltage Monitors
Product Usage Instructions
FAQ
SPECIFICATIONS
PARAMETERS
INSTALLATION
Wiring Diagrams
TROUBLESHOOTING
WARRANTY
CONTACT
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ICM450A Programmable 3 Phase Line Voltage Monitors

Product Usage Instructions

Mount the ICM450A and ICM450A PLUS+ in a cool, dry, easily accessible location in the control panel using (2) #8 screws.
Connect voltage as shown in the provided diagram.
Load-side monitoring is optional, ensure wire ratings are adequate.
Upon application of power, the system will begin monitoring.
Align the DIN rail mounting plate with the 4 holes on the back side of the ICM450A/450A Plus+.
Thread the provided screws through the mounting holes and into the mounting plate.

FAQ

Q: Can I change the settings of the ICM450A and ICM450A PLUS+?
A: No, the settings cannot be changed.
Q: What should I do before making any connections?
A: Disconnect all power to the system.
Q: Who should install the ICM450A and ICM450A PLUS+?
A: Trained technicians should perform the installation, adhering to all local and national electric codes.

SPECIFICATIONS

Input

Line voltage: Universal, 190-600 VAC
Frequency: 50/60 Hz
Control voltage: 18-240 VAC
Load side monitoring: Optional

Output

Type: Relay, SPDT
Voltage range: 277 VAC @ 6A, general purpose
Ambient Operating Temperature: -40ºF to +149ºF (-40ºC to +65ºC)
Storage Temperature: -40ºF to +185ºF (-40ºC to +80ºC)

Mechanical

Mounting: Surface mount using (2) #8 screws
Terminations: 1/4” quick connects
Weight: 12 ounces (341 grams)

ModBus

RS485 Communication: (ICM 450A PLUS+)
Node ID: 175
Baud rate: 9600
Stop Bits: 2
Parity: none
Data Bits: 8
- NOTE: These Settings cannot be changed.
Dimensions: 6.5”L x 4.75”W x 1.09”D

PARAMETERS

Line Voltage: Universal 190-600 VAC
Phase Unbalance Protection: 2-20% adjustable
Over/Under Voltage Protection:
Under Voltage: 2-25% adjustable
Over Voltage: 2-25% adjustable
Phase Loss Protection: Equals 25% of nominal for any given phase; the system will shut down and a fault will be recorded should this occur
Delay on Break Timer: 15 seconds to 10 minutes adjustable
Control Voltage: 18-240 VAC
Control Mode: ON/OFF
Fault Interrogation Delay:
Time Delay: 0 to 15 seconds adjustable
Provides a delay between fault detection and system shutdown – helps to eliminate nuisance trips or unnecessary shutdowns
Reset Mode: 0 (auto) or 1-10 retries
Set Date and Time: Provides real-time clock for date and time stamp (ICM450A PLUS+)
Language: Set to English or Spanish language for display

CAUTION!

Installation of the ICM450A and ICM450A PLUS+ shall be performed by trained technicians only. Adhere to all local and national electric codes.
Disconnect all power to the system before making any connections.

INSTALLATION

Using (2) #8 screws, mount the ICM450A and ICM450A PLUS+ in a cool, dry, easily accessible location in the control panel.
Connect voltage as shown in Figure 1 (below). Leave existing line and load side connections intact on the contactor.
Load-side monitoring is optional (the unit may be used to monitor the line side only). Wire the contactor and optional control voltage monitoring as in Figure 2.
Note: Load/line wire must be rated for the voltage applied. Do not use wire smaller than 20 AWG.
Upon application of power, the ICM450A and ICM450A PLUS+ will be online and will begin to monitor the system.

Users may install 1 AMP inline fuses rated at the applied input voltage to the line side connections.
Terminals 4 and 5 are the control signal input terminals
“Control Mode” is turned ON or OFF in setup
With “Control Mode” set to “ON,” there must be a voltage present on terminals 4 and 5 for the relay output terminals 1 and 2 to close; this voltage can be supplied from a thermostat, pressure switch, etc.
When the voltage on these terminals is re-applied, the unit will not re-energize until the delay on break (15 seconds- 10 minutes) time has elapsed
Use of terminals 4 and 5 is optional; they will be ignored if the “Control Mode” is set to “OFF”
Terminals 1 and 2 are “dry,” normally open contacts
Terminals 1 and 2 are closed when power is within specifications
Terminals 1 and 2 open when there is a fault condition
Terminals 1 and 2 open when there is a loss of the control signal with “Control Mode” set to “ON”
Note 1: Terminals 6, 7, and 8 are used for Modbus communication on ICM450A PLUS+.
Note 2: Use of female quick-connect terminals suitable for field wiring required.
Female quick-connect terminals suitable for factory wiring only are not permitted.

MODBUS DATA MAPPING QR CODE

To Access the MODBUS data mapping tables, SCAN the QR Bar code to the right.

DIN RAIL MOUNTING INSTRUCTIONS

Align the DIN rail mounting plate with the 4 holes on the back side of the ICM450A/450A Plus+.
Thread the four # 10 screws provided in the kit through the ICM450A/450A Plus+ mounting holes from the top side and thread into the mounting plate as seen in fig 5.

Optional din rail mounting kit sold separately (Order: DIN-ICM450A)

Wiring Diagrams

ICM450A AND ICM450A PLUS+ WIRING DIAGRAMS

SETTING THE PARAMETERS

Press the SETUP button to enter Setup mode. Setup LED will light.
Use the arrows to change user parameters.
Scroll through the setup by pressing and releasing the SETUP button.
When the last parameter has been set, the phase average will be displayed and the Setup LED will automatically turn OFF.

TERMINATING THE RESISTOR

The ICM450A PLUS+ is equipped with an internal terminator resistor which can be enabled or disabled in the setup.

BUTTON FUNCTIONS

Press arrows to scroll through and select user parameter settings in Setup mode. HOLD down for a fast edit.
Press to enter Setup mode and select user parameters.
Hold for voltage display a b, b c, a c (simultaneously).
Press to read faults. Hold for 5 seconds to clear faults and reset memory.

Voltage Read Calibration
Hold down both the UP & Down buttons simultaneously to enter calibration mode (Fault and Setup LEDs will flash). Press the Up & Down buttons individually to adjust display voltage allowing a few seconds between presses for voltage averaging. Press SETUP to exit calibration.

PARAMETERS

Parameter	Description	Range	Default	Recommended
Line Voltage	Average phase-to-phase line voltage	190-600	208

Nameplate Voltage
Delay on Break| Amount of time between the load de-energizing and re- energizing| 15 seconds –

10 minutes

| 15

seconds

| 4 minutes
Delay on Fault*| Amount of time before the load de-energizes due to a non-critical fault| 0-15 seconds| 15

seconds

Non-critical faults are faults such as high/low voltage and phase unbalance and are subject to the delay on fault setting. Critical faults, such as phase loss and phase reversal, do not allow fault interrogation and the response time (under 4 seconds) is not user-settable.
For best recommendations, consult the manufacturer of the equipment.

FAULT CONDITIONS

Press and release the fault button to scroll through all saved faults.
Note: For initial setup, press and hold FAULT for 5 seconds to remove any previously stored faults.

Fault	Problem	Corrective Action

__

Back Phase Loss

| __

Not all three of the phases on the load side are present

| 1. Re-energize the contactor.

2. If the fault reappears after the load energizes:

a. Turn all power OFF

b. Check all load side connections

c. Check the contacts of the contactor for debris or excess carbon.

__

Back Phase Rev

| Loads 1, 2, or 3 are not in sequence (not 120º phase shifted)| 1. Turn OFF all power.

2. Swap any 2 phases on the load side of the ICM450A and ICM450A PLUS+ only (example: swap load 1 and load 2) *

3. Re-apply power.

__

Back Phase Unbalance

| A voltage unbalance between the three load phases exceeds the unbalance setpoint| 1. Press the READ button to observe the present load voltages. Check the system for unbalanced causes.

2. Increase the fault interrogation time if necessary.

3. Increase the percent unbalance setting if necessary.

__

Front Over Voltage

| The average phase-to-phase voltage exceeds the maximum percentage| 1. Check the system for over-voltage causes.

2. Increase the percent over-voltage setting if necessary.

3. Increase the fault interrogation time if necessary.

__

Front Phase Loss

| Not all three of the phases on the line side are present| 1. Press and hold the READ button on the phase monitor or use an AC voltmeter to carefully measure all three phase-to-phase line voltages ( example: Line 1 Line 2, Line 2 Line 3, Line Line 1).

2. Repair the missing phase.

__

Front Phase Reversal

| Lines 1, 2, or 3 are not in sequence (not 120º phase shifted)| 1. Turn OFF all power.

2. Swap any 2 phases on the line side of the ICM450A and ICM450A PLUS+ (example: swap Line 1 and Line 2)*

3. Re-apply power.

__

Front Phase Unbalance

| A voltage unbalance between the three line phases exceeds the unbalance setpoint| 1. Press the READ button to observe the present load voltages. Check the system for unbalanced causes.

2. Increase the fault interrogation time if necessary.

3. Increase the percent unbalance setting if necessary.

__

Front Under Voltage

| The average phase-phase voltage is below the minimum percentage| 1. Check the system for under-voltage cause.

2. Increase the percent under-voltage setting if necessary.

3. Increase the fault interrogation time if necessary.

Only swap phases during initial setup, not after the ICM450A and ICM450A PLUS+ have been in operation without errors.

TROUBLESHOOTING

Problem| LCD

Readout

| LED Status| Corrective Action
---|---|---|---
Load will not energize| Phase Average| All LEDs Off| Confirm that the control input (terminals 4 & 5) is properly connected and configured
Load will not energize| Phase Average| Load LED Off, Fault LED blinking| Press FAULT once to observe the current fault; correct the condition of the first fault that appears (see Fault Conditions above, for a list of corrective actions)
Fault LED blinks repeatedly while the load is energized| Phase Average| Fault LED Blinking, Load LED On| Indicates there are faults saved in the memory, press FAULT rapidly to scroll through saved faults; to clear the faults, press and hold FAULT for more than 5 seconds
Load will not de-energize when the control voltage is OFF| Phase Average| Load LED On, Control LED Off| The control mode setting is OFF; press SETUP to get to the control mode. Press to set the control mode ON
Setup LED is on while the load is being energized| Anything Other Than Phase Average| Setup LED On, Load LED On| To exit the setup mode, press either READ or FAULT
Load will not energize| Reset| Fault LED Blinking| The unit is in a lockout, and the maximum number of retries in manual reset mode has been reached. To reset the control, remove and reset the power to the control.
Load turns ON and OFF repeatedly| Displays Existing Fault| Fault LED Blinking| Fix load side fault; press FAULT to observe condition; the delay on break period may be too short; press SETUP

to enter the delay on break mode; press to lengthen the delay

Scrambled characters or black boxes on LCD screen| Unreadable| Irrelevant| Processor or memory damaged. Replace ICM control.

WARRANTY

ONE-YEAR LIMITED WARRANTY
The Seller warrants its products against defects in material or workmanship for one (1) year from the date of manufacture. The liability of the Seller is limited, at its option, to repair, replace, or issue a non-case credit for the purchase prices of the goods which are provided to be defective. The warranty and remedies set forth herein do not apply to any goods or parts thereof which have been subjected to misuse including any use or application in violation of the Seller’s instructions, neglect, tampering, improper storage, incorrect installation, or servicing not performed by the Seller. To permit the Seller to properly administer the warranty, the Buyer shall: 1) Notify the Seller promptly of any claim, submitting date code information or any other pertinent data as requested by the Seller. 2) Permit the Seller to inspect and test the product claimed to be defective. Items claimed to be defective and are determined by Seller to be non-defective are subject to a $30.00 per hour inspection fee. This warranty constitutes the Seller’s sole liability hereunder and is in place of any other warranty expressed, implied or statutory. Unless otherwise stated in writing, Seller makes no warranty that the goods depicted or described herein are fit for any particular purpose.