
111
Table 16 — ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
K. ISM ALARMS
*[LIMIT] is shown on the ICVC as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or alarm condition.
[VALUE] is the actual pressure, temperature, voltage, etc., at which the control tripped. "Exceeded Limit" in Alarm or Alert messages may mean the value is above or
below a threshold
.
ICVC
FAULT
STATE
PRIMARY MESSAGE
SECONDARY MESSAGE
PRIMARY CAUSE
ADDITIONAL
CAUSE/REMEDY
200
PROTECTIVE LIMIT
1M CONTACT FAULT
200->1M Aux Contact Fault; Check 1M
Contactor and Aux
1M aux contact is open when it should be closed
during start or run mode. Confirm starter 1M aux
contact closes when ISM 1CR contact closes and
terminal J9-2 is energized with 115V. Check wiring
leading to ISM J2-9 and J2-10. Check MOTOR
RATED LOAD AMPS in ISM_CONF screen. Wye-
Delta Starters: Check for failed or incomplete tran-
sition. Check S-2M mechanical interlock opera-
tion.
201
PROTECTIVE LIMIT
2M CONTACT FAULT
201->2M Aux Contact Fault; Check 2M
Contactor and Aux
2M aux contact closure was delayed after 1M has
closed. Confirm starter 2M aux contact closes fol-
lowing the 1M aux contact closure and the starter
energizes the motor. Check wiring leading to ISM
J2-11 and J2-12. Check MOTOR RATED LOAD
AMPS and confirm that the correct STARTER
TYPE has been selected in the ISM_CONF
screen. Wye Delta Starters Only: Check wiring
from ISM J9-4 to transition contactor.
202
PROTECTIVE LIMIT
MOTOR AMPS NOT SENSED
202->Motor Amps Not Sensed — Aver-
age Line Current [VALUE]
The ISM has not sensed sufficient current for an
excessive delay after 1M has closed. Check the
MOTOR CURRENT CT RATIO and the MOTOR
RATED LOAD AMPS in the ISM_CONF screen.
Check VFD OPTION in SETUP 2 screen. Check
for wiring of current transformers to the J4 ISM ter-
minals. Check if main circuit breaker has tripped.
Check ISM_HIST screen
203
FAILURE TO START
EXCESS ACCELERATION TIME
203->Motor Acceleration Fault - Aver-
age Line Current [VALUE]
Any line current remains high for an excessive
time duration following 1M aux and either 2M aux
or transition contact closure. Check that inlet guide
vanes are fully closed at start up. Check
ISM_HIST screen.
Check Motor Rated Load Amps in ISM_CONF
screen. Reduce condenser pressure if possible.
204
FAILURE TO STOP
1M/2M CONTACT FAULT
204->1M/2M Aux Contact Stop Fault;
Check 1M/2M Contactors and Aux
The 1M aux or 2M aux contacts are closed during
power up or the 1M aux or 2M aux contacts remain
closed for an excessive delay following a STOP
command. Check wiring and dry contacts leading
to ISM J2-9 and J2-10 and J2-11 and J2-12.
205
FAILURE TO STOP
MOTOR AMPS WHEN
STOPPED
205->Motor Amps When Stopped -
Average Line Current [VALUE]
High line current measured on any phase after
power up or STOP command. Check the MOTOR
CURRENT CT RATIO and the MOTOR RATED
LOAD AMPS in the ISM_CONF screen. Check
VFD OPTION in SETUP 2 screen. Check
ISM_HIST screen. Check for high inrush current
during power-up. Confirm that the starter de-ener-
gizes the motor when the ISM removes 115V from
ISM J9-2. Confirm that the correct STARTER
TYPE has been selected in the ISM_CONF
screen.
206
PROTECTIVE LIMIT
STARTER FAULT
206->Starter Fault Cutout; Check
Optional Starter Contacts
The ISM has received a start command and the
starter has declared a Fault. The dry contacts con-
nected to ISM J2-7 and J2-8 are open. See starter
display for starter Fault Code. For Benshaw Inc.
RediStart starters, view RediStart MICRO display.
For VFD, check VFD display Fault History. Clear
VFD faults with VFD keypad. For Allen-Bradley
wye delta starters with RLA > 718 A, the TR3 timer
may have expired as a result of a delayed transi-
tion.
207
PROTECTIVE LIMIT
HIGH CONDENSER PRESSURE 207->High Cond Pressure Cutout.
[VALUE] exceeded limit of [LIMIT]*
Check Compressor Discharge High Pressure
switch wiring and accuracy. Check for high con-
denser water temperatures, low water flow, fouled
tubes. Check for division plate/gasket bypass.
Check for noncondensables in refrigerant. If
[Value] is less that [Limit], the 1M aux contact was
open for an excessive time following a start com-
mand. Check High Pressure Relay contacts and
115 V wiring leading to ISM J9-1. Verify that 115
VAC is present on J9-1 with oil pump on. Check
115 V wiring leading from ISM J9-2 to the 1M aux
coil and base. Check for 115 VAC at 1M coil
during a startup attempt. Check the 24V circuit
leading from power panel terminal 50 to the 2C
aux contact and High Pressure Switch. Check the
24V circuit leading from power panel terminals 17
and 43 leading to the High Pressure Relay coil and
base.
208
PROTECTIVE LIMIT
EXCESSIVE MOTOR AMPS
208->Average Line Current [VALUE]
exceeded limit of [LIMIT]*.
AVERAGE LINE CURRENT > 110% for an exces-
sive amount of time. Check MOTOR RATED
LOAD AMPS and MOTOR CURRENT CT RATIO
in ISM_CONF time. Check ISM_HIST screen.
Check for conditions that cause excessive lift.
Check guide vane actuator for proper operation.
Confirm that guide vanes will fully close prior to
start-up.
Содержание AquaEdge 19XR series
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Страница 152: ...152 a19 1871 Fig 63 PIC II Control Panel Wiring Schematic Frame 4 and 5 Compressors with Split Ring Diffuser ...
Страница 154: ...154 Fig 64 Benshaw Inc Wye Delta Unit Mounted Starter Wiring Schematic Low Voltage a19 1873 ...
Страница 161: ...161 Fig 69 Typical Low Voltage Variable Frequency Drive VFD Wiring Schematic 575 v ...
Страница 162: ...162 Fig 69 Typical Low Voltage Variable Frequency Drive VFD Wiring Schematic 575 v cont ...
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