ICM Controls ICM450 User Manual

4
Fault Conditions
* Only swap phases during initial setup, not after the ICM450 has been in operation without
errors.
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
ICM450 only (example: swap load 1 and load 2) *
3. Re-apply power.
Back
Phase
Unbal
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
Volt
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
Rev
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 ICM450
(example: swap load 1 and load 2)*
3. Re-apply power.
Front
Phase
Unbal
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
Volt
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.

ICM Controls ICM450 Specifications

General

Brand	ICM Controls
Model	ICM450
Category	Measuring Instruments
Language	English