ICM Controls ICM450A General instructions
• When the voltage on these terminals is re-applied,
the unit will not re-energize until the delay on break
(0-10 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
• Terminals1and2areclosedwhenpoweriswithinspecications
• 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 used for ModBus communication on ICM450A PLUS+.
Note 2: Use of female quick connect terminals suitable for eld wiring.
Female quick-connect terminals suitable for factory-wiring only are not
permitted.
Figure 3
Contactor Voltage
(18-240 VAC)
Optional Control Voltage
Contactor
Coil
COM NO NC
Figure 2
Contactor Voltage
(18-240 VAC)
Optional Control Voltage
Contactor
Coil
COM NO NC
ICM450A and ICM450A PLUS+ Wiring Diagrams
Load 3
Load 2
Load 1
LOAD
L1 L2
3-Pole Contactor
Load 2
Load 1
L1 L2
2-Pole Contactor
Load
3
LOAD
L3 L3
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Optional Control
Voltage
18-240 VAC
6 87432 51
Optional Control
Voltage
18-240 VAC
ICM450A &
ICM450A PLUS+
Programmable 3-Phase
Line Voltage Monitors
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.
Caution
Specification
Input: • Line voltage: Universal, 190-600 VAC
• Frequency: 50-60 Hz
• Control voltage: 18-240 VAC
• Load mide monitoring: Optional
Output: • Type: Relay, SPDT
• Voltage range: 277 VAC @ 6A, general purpose
Ambient Operating Temperature: -40ºF to +167ºF (-40ºC to +75ºC)
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 (ICM450A PLUS+)
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; system will shut
down and a fault will be recorded should this occur
Delay on Break Timer: 0 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
1. Align the DIN rail mounting plate with the 4 holes on the
back side of the ICM450A/450A Plus+.
2. Thread the four # 10 screws provided in the kit through
the ICM450A/450A Plus+ mounting holes from the top
sideandthreadintothemountingplateasseening5.
** Optional din rail mounting kit sold separately (Order:DIN-ICM450A)
Din Rail Mounting Instructions
Button Functions
Press arrows to scroll
through and select user
parameter settings in
Setup mode. HOLD
down for 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
(FaultandSetupLEDswillash).PresstheUp&Downbuttonsindividuallytoadjust
display voltage allowing a few seconds between presses for voltage averaging.
Press SETUP to exit calibration
1. Press the SETUP button to enter Setup mode. Setup LED will light.
2. Use the and arrows to change user parameters.
3. Scroll through setup by pressing and releasing the SETUP button.
4. When the last parameter has been set, the phase average will be displayed and the
Setup LED will automatically turn OFF.
Setting the Parameters
Terminating the Resistor
ICM450APlus Models
RS485 terminating resistor
Enabled = Installed
Disable = Not Installed
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MODBUS Data Mapping QR Code
To Access the MODBUS data mapping tables, SCAN the
QR Bar code to the right.
Installation
1. Using (2) #8 screws, mount the ICM450A and ICM450A PLUS+ in a cool, dry, easily
accessible location in the control panel.
2. Connect voltage as shown in Figure 1 (below). Leave existing line and load side
connections intact on the contactor.
3. Load side monitoring is optional (unit may be used to monitor line side only). Wire the
contactor and optional control voltage monitoring as in Figures 2 and 3 (below).
Note: Load/line wire must be rated for 3-phase voltage rating, 20 AWG minimum.
4. Upon application of power, the ICM450A and ICM450A PLUS+ will be on line and will
begin to monitor the system.
Figure 1
Incoming 3-phase
voltage from load
or “back” side of
contactor (optional)
Incoming 3-phase voltage from
line or “front” side of contactor
The incoming 3-phase voltage
is used to power up the
ICM450A as well (190-600)
• 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.
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 0-10 minutes .1
minute
4 minutes**
Delay on Fault Amount of time before the load de-energizes due to a non-critical fault* 0-15 seconds 15
seconds
7-8 seconds**
% Over/Under
Voltage
Maximum/minimum phase to phase average voltage, respectively 2-25% 20% 12-15%**
% Phase Unbalance Amount of allowable voltage unbalance 2-20% 20% 4-5%**
Reset Mode 0 (auto) or number of times the load can be re-energized after a load side fault before a manual reset is
necessary
0 (auto)
, 1-10
0 (auto) 0 (auto)
Control Mode With control mode set to OFF, the load will energize if no 3- phase fault conditions exist; with control mode ON,
the load will energize if no fault conditions exist and control voltage is present at terminals 4 and 5 of the ICM450A
ON or OFF ON Based on wiring
Date and Time Provides real time clock for date and time stamp (ICM450A PLUS+ models)
ON or OFF
ON
ON
Language Set to English or Spanish language for display
EN or SP EN English
* Non-critical faults are faults such as high/low voltage and phase unbalance. Critical faults, such as phase loss and phase reversal, have a fault interrogation and typical response time of
under 4 seconds and it is not user adjustable.
** For best recommendations, consult manufacturer of equipment.
Troubleshooting
Problem LCD
Readout LED Status Corrective Action
Load will not energize Phase Average All LEDs Off Conrmthatthecontrolinput(terminals4&5)isproperlyconnectedandcongured
Load will not energize Phase Average Load LED Off,
Fault LED blinking
Press FAULToncetoobservethecurrentfault;correcttheconditionoftherstfaultthatappears
(see Fault Conditions above, for a list of corrective actions)
Fault LED blinks repeatedly
while 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 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 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 Unit is in lockout, maximum number of retries in manual reset mode has been reached. To reset the
control, remove and reset power to the control.
Load turns ON and OFF
repeatedly
Readout is Irrelevant 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
ONE-YEAR LIMITED WARRANTY
The Seller warrants its products against defects in material or workmanship for a period of 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
applicationinviolationoftheSeller’sinstructions,neglect,tampering,improperstorage,incorrectinstallationor
servicing not performed by the Seller. In order 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.ThiswarrantyconstitutestheSeller’ssoleliabilityhereunderandisinlieuofanyotherwarrantyexpressed,
implied or statutory. Unless otherwise stated in writing, Seller makes no warranty that the goods depicted or
describedhereinaretforanyparticularpurpose.
Patent No. 424,953
7313 William Barry Blvd., North Syracuse, NY 13212
(Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276
www.icmcontrols.com
LIAF290-1
Press and release 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 system for unbalance cause.
2. Increase the fault interrogation time if necessary.
3. Increase the percent unbalance setting if necessary.
Front Over Voltage Average phase-phase voltage exceeds the
maximum percentage
1. Check system for over-voltage cause.
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-phase line voltages (example: Line 1
Line 2, Line 2
Line 3, Line 3
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 system for unbalance cause.
2. Increase the fault interrogation time if necessary.
3. Increase the percent unbalance setting if necessary.
Front Under Voltage Average phase-phase voltage is below the
minimum percentage
1. Check system for under-voltage cause.
2. Increase the percent under-voltage setting if necessary.
3. Increase the fault interrogation time if necessary.
Fault Conditions
* Only swap phases during initial setup, not after the ICM450A and ICM450A PLUS+ has been in operation without errors.
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