York VSD 270, Руководство по эксплуатации

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Safety shutdown messages
Table 3: Safety shutdowns
Message Description
Motor or Starter – Current Imbalance
MOTOR OR STARTER – CURRENT
IMBALANCE
The OSCD logic board generates this shutdown. This shutdown will become active
when the highest of the three motor currents exceeds 80% of the programmed
FLA. After these conditions are met, if any one phase of motor current exceeds
30% of the average current for 45 seconds, a Safety shutdown will be activated.
VSD - 105 % Motor Current Overload
105% MOTOR CURRENT OVERLOAD
The OSCD logic board generates this shutdown by reading the current from the
three output current transformers. The shutdown is generated when the OSCD
logic board has detected that the highest of the three output phase currents has
exceeded 105% of the programmed 100% full load amps (FLA) value for more than
40 seconds. This shutdown requires a manual reset using the Reset pushbutton
on the OSCD logic board.
A thermistor sensor is located on the copper chill plate of the OSCD Power Unit. If
at anytime this thermistor detects a temperature of 170°F (76°C) or higher a shut-
down will occur. The cooling fans and coolant pump on the OSCD will continue to
run after the shutdown until the thermistor temperature has dropped below 160°F
(71°C), and below the reset threshold value for the inverter listed in the following
table for a given model. This shutdown requires a manual reset using the Reset
push-button on the OSCD logic board.
Drive model Drive horsepower rating
Threshold reset
value
LVD, VSD
270, 292, 351, 385, 419, 424, 503, 608, 658,
704, 790, 868, 882, 900, 914, 917, 948,
1055
170°F (77°C)
LVD 546, 575, 750 175°F (79°C)
VSD - High Converter Heatsink
Temperature
HIGH CONVERTER HEATSINK TEMP
LVD 1100 222°F (105°C)
VSD - High Inverter Baseplate
Temperature (270, 292, 351 and 424 Hp
drives)
HIGH INVERTER BASEPLATE
TEMPERATURE FLT
A thermistor sensor is located inside the transistor module on the OSCD power
unit. If at anytime this thermistor detects a temperature of 175°F (79°C) or higher
a shutdown will occur. The cooling fans and coolant pump on the OSCD will
continue to run after the shutdown until the thermistor temperature has dropped
below 165°F (74°C), and the converter temperature is below 160°F (71°C). This
shutdown requires a manual reset using the Reset push-button on the OSCD logic
board.
Note: The X will indicate the phase that the high temperature has occurred.
A thermistor sensor is located inside each transistor module on the OSCD power
unit. If at anytime this thermistor detects a temperature above the shutdown
threshold value listed in the following table for a given model, a shutdown occurs.
The cooling fans and coolant pump(s) on the OSCD will continue to run after the
shutdown until the temperature of the converter is less than 160°F (71°C), and the
inverter temperature is less than the reset threshold value listed in the following
table for a given model. This shutdown requires a manual reset using the Reset
push-button on the OSCD logic board.
Drive model Drive hp rating
Threshold
shutdown value
Threshold reset
value
LVD, VSD
385, 419, 503, 608,
(575 VAC)
175°F (79°C)
LVD, VSD
608 (400 VAC), 658,
704, 790, 868, 882,
900, 914, 917, 948,
1055
196°F (91°C)
170°F (77°C)
LVD 546, 575 190°F (88°C)
LVD 750 210°F (99°C)
175°F (79°C)
VSD - High Phase (X) Inverter
Baseplate Temperature (on models
where 3 transistors modules are used)
HIGH PHASE (X) BASEPLATE
TEMPERATURE FAULT
LVD 1100 232°F (111°C) 222°F (105°C)
35 Liquid-Cooled OptiSpeed Compressor Speed Drive