51
Table 5 — Protective Safety Limits and Control Settings (cont)
Table 6 — Capacity Overrides
MONITORED
PARAMETER
ALARM
OR
ALERT
STATE
LIMIT COMMENTS
Inverter
- Overcurrent
246 INVERTER OVERCURRENT exceeded limit determined
by VFD
Preset Alarm
- High
Temperature
219 INVERTER TEMPERATURE exceeds limit calculated by
VFD
Preset Alarm
109 INVERTER TEMPERATURE > INVERTER TEMP
OVERRIDE – 20 deg F (11.1 deg C)
Prestart Alert, Configure INVERTER TEMP OVERRIDE in
SETUP1 screen
High VFD Inductor
Temperature
255 Inductor Temperature Switch Open Preset Alarm
DC Bus Voltage
- High
205/150 DC BUS VOLTAGE Limit Exceeded, limit is calculated by
VFD
Preset Alarm/Autorestart Alert
- Low
215/149 DC BUS VOLTAGE < approximately 407VDC at
400/480V Line Side Voltage
Preset Alarm/Autorestart Alert
Ground Fault
220 GROUND FAULT CURRENT > 7% of Drive Rated Amps
Sensed
Preset Alarm
Optional Limits
- Spare
Temperature
248,249 SPARE TEMPERATURE > SPARE TEMP LIMIT for 3
consecutive samples
Optional Alarm, Configure SPARE TEMP ENABLE and
SPARE TEMP LIMIT in SETUP1 screen
- Spare
Temperature
158,159 SPARE TEMPERATURE > SPARE TEMP LIMIT for 3
consecutive samples
Optional Alert, Configure SPARE TEMP ENABLE and
SPARE TEMP LIMIT in SETUP1 screen
- Refrigerant
Leak Sensor
250 REFRIGERANT LEAK SENSOR PPM > REFRIG LEAK
ALARM PPM
Optional Alarm, configure PPM AT 20 MA and REFRIG-
ERANT LEAK ALARM PPM in OPTIONS screen.
OVERRIDE
CAPACITY CONTROL
FIRST STAGE SET POINT
SECOND STAGE
SET POINT
SECOND STAGE
OVERRIDE
TERMINATION
VIEW/
MODIFY
ON ICVC
SCREEN
DEFAULT
VALUE
CONFIGURABLE
RANGE
VALUE VALUE
HIGH CONDENSER PRESSURE
(COND PRESS OVERRIDE)
SETUP1
145 PSIG
(1000 kPa)
145 to 166 PSIG
(1000 to 1145 kPa)
CONDENSER PRESSURE >
COND PRESS OVERRIDE
+ 2.4 PSIG(16.5 kPa) OR
CONDENSER PRESSURE
> 163 PSIG (1124 kPa)
CONDENSER
PRESSURE
< CONDENSER
PRESS
OVERRIDE
– 1 PSI (6.9 kPa)
LOW EVAPORATOR
TEMPERATURE
(REFRIG OVERRIDE DELTA T)
SETUP1 3 ^F (1.7 ^C)
2 to 5 ^F
(1.1 to 2.8 ^C)
CALC EVAP SAT TEMP, or
EVAP REFRIG LIQUID
TEMP < EVAP SAT
OVERRIDE TEMP
– 1° F (.6° C) NOTE: EVAP
SAT OVERRIDE TEMP =
EVAP REFRIG TRIPPOINT +
REFRIG OVERRIDE DELTA T
CALC EVAP SAT
TEMP and
EVAP REFRIG
LIQUID TEMP >
EVAP SAT
OVERRIDE
TEMP + 2° F (1.1° C)
HIGH MOTOR TEMPERATURE
(COMP MOTOR TEMP OVERRIDE)
SETUP1 200° F (93° C)
150 to 200° F
(66 to 93° C)
COMP MOTOR WINDING
TEMP > COMP MOTOR TEMP
OVERRIDE + 10° F (5.6° C)
COMP MOTOR
WINDING TEMP <
COMP MOTOR
TEMP OVERRIDE
– 2° F (1.1° C)
HIGH RECTIFIER TEMPERATURE
(RECTIFIER TEMP OVERRIDE)
SETUP1
160° F (71° C)
(Q,R Compressors
180° F (82° C)
(P Compressor)
155 to 170° F (68 to 77° C)
(Q,R Compressors)
155 to 190° F (68 to 88° C)
(P Compressor)
RECTIFIER TEMP >
RECTIFIER TEMP
OVERRIDE + 10° F (5.6° C)
RECTIFIER
TEMP < RECTIFIER
TEMP OVERRIDE
– 5° F (2.8° C)
HIGH INVERTER TEMPERATURE
(INVERTER TEMP OVERRIDE)
SETUP1 160° F (71° C)
155 to 170° F
(68 to 77° C)
INVERTER TEMP >
INVERTER TEMP
OVERRIDE + 10° F (5.6° C)
INVERTER TEMP <
INVERTER TEMP
OVERRIDE
– 5° F (2.8° C)
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