Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual page 40

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
Low Pressure
Low Pressure
Pressure Sensor Fault
Low Temperature
Line Voltage — High
High
Low
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
260-271 .06 > Voltage Ratio > .98 for 3 seconds
231 COMP DISCHARGE TEMP > 220 F
(104.4 C)
167 COMP DISCHARGE TEMP > COMP DISCHARGE
ALERT
103 COMP DISCHARGE TEMP > COMP DISCHARGE
ALERT – 10 F (5.6 C)
233 COMP MOTOR WINDING TEMP > 220 F
(104 C)
102 COMP MOTOR WINDING TEMP > COMP MOTOR
TEMP OVERRIDE – 10 F (5.6 C)
101 COMP THRUST BRG TEMP > COMP THRUST
BRG ALERT – 10 F (5.6 C)
234 COMP THRUST BRG TEMP > 185 F
(85 C)
243 Chiller in RECYCLE SHUTDOWN and EVAP
TEMP< EVAP REFRIG TRIPPOINT + 1 F
232 EVAP REFRIG TEMP < 33 F (water) and
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
104 EVAPORATOR REFRIG TEMP < 33 F
+ REFRIG OVERRIDE DELTA T (water)
EVAPORATOR REFRIG TEMP < EVAP REFRIG
TRIPPOINT (brine)
239 5.5 VDC < Voltage Reference < 4.5 VDC
235 CONDENSER PRESSURE > 165 PSI
207 High Pressure Switch Open (165 ± 5 PSIG) &
VFD START = YES
106 CONDENSER PRESSURE > COND PRESS
OVERRIDE – 20 PSI
CONDENSER PRESSURE > 145 PSI
244 Chiller in PUMPDOWN mode and CONDENSER
REFRIG TEMP < CONDENSER FREEZE POINT
154 Energizes condenser pump relay if CONDENSER
REFRIG TEMP < CONDENSER FREEZE POINT.
Deenergizes condenser pump relay when
CONDENSER REFRIG TEMP > CONDENSER
FREEZE POINT + 5° F (2.8° C) and ENTERING
COND LIQUID > CONDENSER FREEZE POINT
228 OIL PRESSURE DELTA P < 13 PSID and
VFD START = TRUE
OIL PRESSURE DELTA P < 18 PSID and startup
complete after OIL PRESS VERIFY TIME elapsed
142 OIL PRESSURE DELTA P < 18 PSID and startup
complete
227 OIL PRESSURE DELTA P > 4 PSI immediately
before oil pump turned on
105 OIL SUMP TEMP < 150 F and OIL SUMP TEMP <
EVAP REFRIG TEMP + 50 F (27.8 C)
211/145 Line voltage > approximately 528 V, limits are
calculated by VFD
108 PERCENT LINE VOLTAGE > Overvoltage
threshold
212/146 DC BUS VOLTAGE < approximately 408 V,
limits are calculated by a VFD
107 PERCENT LINE VOLTAGE < Undervoltage
threshold
216 LINE VOLTAGE IMBALANCE > LINE VOLTAGE
% IMBALANCE
210/144 Line Voltage on 2 Phases < 50% for 1 Cycle
209/143 LINE CURRENT IMBALANCE>LINE CURRENT
% IMBALANCE
222 47 Hz < LINE FREQUENCY < 63 Hz
214/148 Loss of control power to ICVC for excessive time
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
SETUP1 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