Carrier AquaEdge 19XRV series Operation, Maintenance And Installation Manual page 48

MONITORED PARAMETER
Temperature Sensors Out of Range
Pressure Transducers Out of Range
High Compressor Discharge Temperature
High Motor Temperature
Compressor Thrust Bearing Temperature
Low Evaporator Temperature
(Freeze Protection)
Transducer Voltage Fault
High Condenser Pressure — Control
Switch
Prestart
Low Condenser Pressure
(Freeze Protection)
Oil — Low Pressure
Pressure Sensor Fault
Low Temperature
Line Voltage — High
Low
Imbalance
Line Current — Single Cycle Dropout
Imbalance
Power — Line Frequency Out of Range
ICVC Power on Reset
Table 6 — Protective Safety Limits and Control Settings
ALARM/
ALERT
260-271, .06 > Voltage Ratio > .98 or – 40 F >
140,141 Temperature>245 F for 3 seconds
.06 > Voltage Ratio > .98 for 3 seconds
260-271
COMP DISCHARGE TEMP > 220 F
231
(104.4 C)
COMP DISCHARGE TEMP > COMP DISCHARGE
167
ALERT
COMP DISCHARGE TEMP > COMP DISCHARGE
103
ALERT – 10 F (5.6 C)
COMP MOTOR WINDING TEMP > 220 F
233
(104 C)
COMP MOTOR WINDING TEMP > COMP
102
MOTOR TEMP OVERRIDE – 10 F (5.6 C)
COMP THRUST BRG TEMP > COMP THRUST
101
BRG ALERT – 10 F (5.6 C)
COMP THRUST BRG TEMP > COMP THRUST
234
BRG TRIP
Chiller in RECYCLE SHUTDOWN and EVAP
243
TEMP< EVAP REFRIG TRIPPOINT + 1 F
EVAP REFRIG TEMP < 33 F (water) and
232
EVAP APPROACH > EVAP APPROACH ALERT
0° F (–17.8 C) < EVAP REFRIG TEMP
< 40 F (4.4 C) (brine) and EVAP APPROACH
> EVAP APPROACH ALERT
EVAPORATOR REFRIG TEMP < 33 F
104
+ REFRIG OVERRIDE DELTA T (water)
EVAPORATOR REFRIG TEMP < EVAP REFRIG
TRIPPOINT (brine)
239 5.5 VDC < Voltage Reference < 4.5 VDC
CONDENSER PRESSURE > 165 PSI
235
High Pressure Switch Open (165 ± 5 PSIG) &
207
VFD START = YES
CONDENSER PRESSURE > COND PRESS
106
OVERRIDE – 20 PSI
CONDENSER PRESSURE > 145 PSI
Chiller in PUMPDOWN mode and CONDENSER
244
REFRIG TEMP < CONDENSER FREEZE POINT
Energizes condenser pump relay if CONDENSER
REFRIG TEMP < CONDENSER FREEZE POINT.
De-energizes condenser pump relay when
154
CONDENSER REFRIG TEMP > CONDENSER
FREEZE POINT + 5 F (2.8 C) and ENTERING
COND LIQUID > CONDENSER FREEZE POINT
OIL PRESSURE DELTA P < 13 PSID and
228
VFD START = TRUE
OIL PRESSURE DELTA P < 18 PSID and startup
complete after OIL PRESS VERIFY TIME elapsed
OIL PRESSURE DELTA P < 18 PSID and startup
142
complete
OIL PRESSURE DELTA P > 4 PSI immediately
227
before oil pump turned on
OIL SUMP TEMP < 150 F and OIL SUMP TEMP <
105
EVAP REFRIG TEMP + 50 F (27.8 C)
Line voltage > approximately 528 V, limits are
211/145
calculated by VFD
PERCENT LINE VOLTAGE > Overvoltage
108
threshold
DC BUS VOLTAGE < approximately 408 V,
212/146
limits are calculated by a VFD
PERCENT LINE VOLTAGE < Undervoltage
107
threshold
LINE VOLTAGE IMBALANCE > LINE VOLTAGE
216 % IMBALANCE
210/144 Line Voltage on 2 Phases < 50% for 1 Cycle
LINE CURRENT IMBALANCE>LINE CURRENT
209/143 % IMBALANCE
222 47 Hz < LINE FREQUENCY < 63 Hz
Loss of control power to ICVC for excessive time
214/148
period
LIMIT
Preset Alarm, Voltage Ratio=Input Voltage/
Voltage Reference(5 Volts)
Preset Alarm, Voltage Ratio=Input Voltage/
Voltage Reference(5 Volts)
Preset Alarm, Configure COMP DISCHARGE
ALERT in SETUP1 screen
Configure COMP DISCHARGE ALERT in SETUP1
screen
Prestart Alert, Configure COMP DISCHARGE
ALERT in SETUP1 screen
Preset Alarm, Configure COMP MOTOR TEMP
OVERRIDE in SETUP1 screen
Prestart Alert, Configure COMP MOTOR TEMP
OVERRIDE in SETUP1 screen
Preset Alert, Configure COMP THRUST BRG
ALERT in SETUP1 screen
Preset Alarm
Preset Alarm, configure EVAP REFRIG
TRIPPOINT in SETUP1 screen
Preset Alarm, Configure EVAP APPROACH
ALERT in SETUP1 screen
Configure EVAP REFRIG TRIP POINT and
CHILLED MEDIUM in SETUP1 screen
Prestart Alert, Configure REFRIG OVERRIDE
DELTA T in SETUP1 screen
Prestart Alert, Configure EVAP REFRIG TRIP-
POINT and CHILLED MEDIUM in SETUP1 screen
Preset Alarm
Preset Alarm, Configure COND PRESS
OVERRIDE in SETUP1 screen
Preset Alarm, Switch closes at 110 ± – PSIG
Prestart Alert, Configure COND PRESS
OVERRIDE in SETUP1 screen
Prestart Alert
Preset Alarm, Configure CONDENSER FREEZE
POINT in SETUP1 screen.
Configure CONDENSER FREEZE POINT in SET-
UP1 screen
Preset Alarm
Preset Alarm, Configure OIL PRESS VERIFY
TIME in SETUP1 screen
Preset Alert
Preset Alarm
Prestart Alert
Preset Alarm/Alert
Preset Prestart Alert
Preset Alarm/Alert
Preset Prestart Alert
Configure LINE VOLTAGE % IMBALANCE and
LINE VOLT IMBALANCE TIME in VFD CONF
screen
Preset Alarm
Configure LINE CURRENT % IMBALANCE and
LINE CURRENT IMBALANCE TIME in VFD_-
CONF screen
Preset Alarm
Preset Alarm
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COMMENTS