ICM450A & ICM450A PLUS+ Programmable 3-Phase Line Voltage Monitors
Installation, Operation & Application Guide
For more information on ICM Controls' complete range of American-made products – plus wiring diagrams, troubleshooting tips and more, visit us at www.icmcontrols.com
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 +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 (ICM 450A PLUS+):
-
- RS485 Communication
- 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
| 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 | 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 | ON |
| Date and Time | Provides real time clock for date and time stamp (ICM450A PLUS+ models) | Based on wiring | ON | ON |
| Language | Set to English or Spanish language for display | EN or SP | EN | English |
| 485 Termination | Allows the user to enable an internal termination resistor | YES or NO | NO | |
| MODBUS ID-1 | Use selectable MODBUS ID | 1-247 | 175 |
* 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.
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. Leave existing line and load side connections intact on the contactor.
- Load side monitoring is optional (unit may be used to monitor 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 on line and will begin to monitor the system.
Figure 1: 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).
Figure 2: Incoming 3-phase voltage from load or “back” side of contactor (optional). Optional Control Voltage 18-240 VAC.
Wiring Diagrams:
2-Pole Contactor: Terminals 1, 2, 3, 4, 5, 6, 7, 8. Load 1, Load 2, Load 3. LINE L1, L2, L3. Optional Control Voltage 18-240 VAC.
3-Pole Contactor: Terminals 1, 2, 3, 4, 5, 6, 7, 8. Load 1, Load 2, Load 3. LINE L1, L2, L3. Optional Control Voltage 18-240 VAC.
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 (Continued)
- 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 (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.
- 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 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.
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 figure 5.
** Optional din rail mounting kit sold separately (Order: DIN-ICM450A)
Setting the Parameters
1. Press the SETUP button to enter Setup mode. Setup LED will light.
2. Use the ◀ and ▶ arrows to change user parameter settings in Setup mode. HOLD down for fast edit.
3. Scroll through 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.
Button Functions
- SETUP:
- Press to enter Setup mode and select user parameters.
- READ:
- Hold for voltage display a b, b c, a c (simultaneously).
- FAULT:
- 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.
Terminating the Resistor
The ICM450A PLUS+ is equipped with an internal terminator resistor which can be enabled or disabled in the set up.
- Press the SETUP button to enter Setup mode. Setup LED will light.
- Use the ◀ and ▶ arrows to change user parameters.
- Scroll through 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.
MODBUS DATA MAPPING QR CODE
To Access the MODBUS data mapping tables, SCAN the QR Bar code to the right.
Fault Conditions
| 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 to 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 to 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 to 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. |
* Only swap phases during initial setup, not after the ICM450A and ICM450A PLUS+ has 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 LED Off, Load will not energize | Phase Average | 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 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 | Setup LED is on while load is being energized | The control mode setting is OFF; press SETUP to get to the control mode. Press to set the control mode ON. | |
| Setup LED On, Load LED On | Anything Other Than Phase Average | 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 | 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. |
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 application in violation of the Seller's instructions, neglect, tampering, improper storage, incorrect installation or 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. This warranty constitutes the Seller's sole liability hereunder and is in lieu 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.
