ICM Controls ICM400 General instructions

Installation, Operation & Application Guide
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products – plus wiring diagrams, troubleshooting tips and more,
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ICM400
Three Phase Voltage Monitor with
Reset Switch
Low cost line voltage protection for
3-phase motor systems
3-Position Reset Switch:
•MAN-MAN
•AUTO-AUTO
•AUTO-MAN
Input
• Line Voltage: Universal, 190-630 VAC • Control Voltage: 18-240 VAC
• Frequency: 50-60 Hz • Frequency: 50-60 Hz
• Load Side Monitoring: Optional
Output
• Type: Relay, SPDT • Voltage Range: 240VAC @ 10A max.
• Frequency: 50-60 Hz
Control Operating Temperature: • Operating Temp:
-40ºF to +167ºF (-40ºC to +75ºC)
• Storage Temp: -40ºF to +185ºF (-40ºC to +80ºC)
Response Times: • Phase Loss: 2 seconds maximum
• Unbalance/High/Low: Full selected trip delay period
Mechanical: • Mounting: Surface mount using (2) #8 screws
• Terminations: Screw terminals • Weight: 12 ounces (341 grams)
Dimensions: 6 1/2” L, 4 1/4” W, 1 3/8” H (16.5 cm. L, 10.8 cm. W, 3.5 cm. H)
Specification
Phase Unbalance Protection
• Voltage Unbalance: 2-25% adjustable
Over/Under Voltage Protection: • Under Voltage: -12% xed, -6% for reset
• Over Voltage: +12% xed, +6% for reset
Phase Loss Protection
• Phase Loss Condition: Equals 25% of nominal for any given phase; system
will shut down should this occur
Lockout Delay Timer
• Input: 18-240 VAC RMS • Time Delay: .1 to 5 minutes adjustable
• Tolerance: +/-20% • Bypass resistor (24 VAC only): 1 kOhm @ 24 VAC
Fault Interrogation Delay
• Time Delay: 1-15 seconds adjustable
• Provides a delay between fault detection and system shutdown - helps to eliminate
nuisance trips or unnecessary shutdowns
Parameters
Installation of the ICM400 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
Installation
1. Using (2) #8 screws, mount the ICM400 in a cool, dry, easily accessible location in
the control panel enclosure.
2. Connect voltage as shown in Figure 1 (below). Leave existing line and load side
connections intact on the contactor.
Note: Load side monitoring is optional (unit may be used to monitor line side
only).
3. Wire the contactor and control voltage monitoring as in Figures 2 and 3 (below).
Note: Load/line wire must be rated for 3-phase voltage rating, 20ga minimum.
4. Upon application of power, the ICM400 will be online and will begin to monitor the
system.
Incoming 3-phase
voltage from load or
“back” side of contactor
(optional) LOAD
1
LOAD
2
LOAD
3
LINE 1
LINE 2
LINE 3
Incoming 3-phase
voltage from line or
“front” side of contactor
(190-600 VAC)
Figure 1
• Terminals 4 and 6 are “dry,” normally open contacts
• Terminals 4 and 6 are closed when power is within
specications
• Terminals 4 and 6 open when there is a fault
condition or loss of control signal
Contactor Voltage (18-240 VAC)
Contactor Coil
Figure 3
13
6 5 4
• Terminals 1 and 3 are the control signal input
terminals
• There must be a voltage present on terminals
1 and 3 for the relay output terminals 4 and 6
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 lockout delay (.1 to 5 minutes) time has
elapsed
Control Voltage
(18-240 VAC)
Short pins when
using 24 VAC
control voltage
with anticipator
type thermostat
Figure 2
* Switch can be
a thermostat,
pressure
switch, etc.
13
6 5 4
3-Position Reset Switch Operation
Choose from three, easy-to-select reset mode positions to best meet the needs of your
system. The modes of operation for each position are described below.
Position 1: FULL MANUAL RESET (MAN-MAN)
Manual control reset required on both the front (line) and back (load) side of system.
Used for highly critical loads. System will not reset until fault is corrected and manually
reset by personnel. After a front side fault the unit will restart only if all of the following
conditions are met:
• The lockout time is complete
• The Reset Mode switch is moved to the AUTO-AUTO position
• No fault condition exists
After a back side fault the unit will restart only if all of the following conditions are met:
• The lockout time is complete
• The Reset Mode switch is moved to the AUTO-AUTO position
• No fault condition exists
Position 2: FULL AUTOMATIC RESET (AUTO-AUTO)
Control automatically resets front (line) and back (load) sides of system. Used on less
critical loads. Helps eliminate unnecessary service calls. After a front or back side
fault, the unit will restart only if all of the following conditions are met:
• The lockout time is complete
• No fault condition exists
Position 3: AUTO FRONT/MANUAL BACK RESET (AUTO-MAN)
Automatic reset on the front (line) side only. Back (load) side requires manual reset.
Typically used with reliable power supply. Back side faults require service evaluation
and manual reset. After a front side fault the unit will restart only if all of the following
conditions are met:
• The lockout time is complete
• No fault condition exists
After a back side fault the unit will restart only if all of the following conditions are met:
• The lockout time is complete
• The Reset Mode switch is moved to the AUTO-AUTO position
• No fault condition exists

ICM400 Setup
Voltage Adjust: Set knob to match 3-phase voltage of system
Fault Interrogation (in seconds):
Set to the amount of time for the ICM400 to analyze a non-critical fault* before de-
energizing the load ** Recommended: 7 to 8 seconds
Lockout Time Delay (in minutes):
Set to the amount of time between the de-energizing of the load and the ICM400
attempting to re-energize the load ** Recommended: 4 minutes
% Voltage Unbalance:
Set to the amount of allowable voltage unbalance between the 3-phase lines **
Recommended: 4 to 5%
* Non-critical faults are faults such as high/low voltage and phase un-balance. Critical
faults are phase loss and phase reversal. When a critical fault is detected, the load
is de-energized immediately.
** For best recommendations, consult manufacturer of motor/compressor.
2-Pole Contactor
* Thermostat, pressure switch, etc.
LINE
3
LINE
1
LINE
2
LOAD
1
LOAD
2
LOAD
3
Control
Voltage
L01
L02
L03
L0AD
LI1
LI3
LI2
ICM400 Wiring Diagrams
3-Pole Contactor
LINE
3
LINE
1
LINE
2
LOAD
1
LOAD
2
LOAD
3
Control
Voltage
L01
L02
L03
L0AD
LI1 LI2 LI3
* Thermostat, pressure switch, etc.
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
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 t for any particular purpose. LIAF054
Problem LEDStatus Corrective Action
Load will not energize All LEDs are OFF Check incoming power and/or control voltage input
Front fault LED ON Slowly turn the Voltage Unbalance knob to maximum (25%):
• If a fault condition continues, check for phase loss with voltmeter
• If a fault condition still exists, reverse any two of the phases on the line side of the
ICM400*
Front fault LED ON
High or low LED ON
Turn the Voltage Adjust knob up or down very slowly until either High or Low voltage LED
turns off
Lockout LED ON Turn Lockout Time Delay knob to .1 minutes; set reset switch to the
AUTO-AUTO position
Front fault LED ON after the load is OFF Slowly adjust the Voltage Unbalance knob to a higher percentage
Load turns ON and OFF Back fault LED ON Check for voltage unbalance, phase loss or phase reversal on the load side of the ICM400
The load short-cycles when the thermostat
is repeatedly opened and closed (thermostat
bounce)
Lockout LED ON
Back fault LED ON
Reconnect the control input as outlined in the (see Typical System Diagram)
Troubleshooting
* Only swap phases during initial setup, not after the ICM400 has been in operation without errors.
Note: After troubleshooting, reset all adjustment knobs and switches to motor/compressor manufacturer’s recommendations.
Typical System Diagram
Contactor
* Install jumper for 24 VAC anticipator type thermostats.
*
Compressor
Thermostat
Control Transformer
Line
Voltage