York YMC2 - Page 107

JOHNSON CONTROLS
107
SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION
FORM 160.84-OM1
ISSUE DATE: 9/21/2017
3
MESSAGE DESCRIPTION
VSD – GROUND FAULT
This message is generated when the sum of the 3 phases of instantaneous input current values
are greater than the shutdown value for a period of 1 second for the given model of drive listed
below. When the condition clears, the chiller can be started after the CLEAR FAULTS key is
pressed.
DRIVE MODEL GROUND CURRENT SHUTDOWN VALUE
0490, 0490A 40 Amps
0612A, 0730A 80 Amps
0774 120 Amps
1278A 200 Amps
VSD – HIGH PHASE
A INPUT BASEPLATE
TEMPERATURE
This shutdown occurred because the Input Baseplate Temperature exceeded the shutdown
value for the given model of drive listed below. After the unit trips, the VSD fan(s) and water
pump(s) shall remain energized until the temperatures of all three rectier’s phases drop below
the fault-reset threshold of 165°F (73.8°C). In April of 2016 the shutdown control for the fan(s)
and pump(s) was changed. The control will now keep the fan(s) and pump(s) running for 2
minutes after the fault occurred. This change occurred in software version C.HYP.03.04.01, and
C.HYP.04.04.01. When this happens, the unit’s fan(s) and water pumps shall be de-energized.
When the condition clears, the chiller can be started after the CLEAR FAULTS key is pressed.
DRIVE
MODEL
HIGH PHASE A INPUT BASEPLATE
TEMPERATURE SHUTDOWN VALUE
0490, 0490A 0612A and 0730A 190°F (87.8°C)
0774, 1278A (380-414 VAC) 170°F (76.6°C)
1278A (460 VAC) 150°F (65.5°C)
VSD – HIGH PHASE
B INPUT BASEPLATE
TEMPERATURE
See “VSD – HIGH PHASE A INPUT BASEPLATE TEMPERATURE” message preceding.
VSD – HIGH PHASE
C INPUT BASEPLATE
TEMPERATURE
See “VSD – HIGH PHASE A INPUT BASEPLATE TEMPERATURE” message preceding.
VSD – HIGH PHASE A
MOTOR BASEPLATE
TEMPERATURE
The motor/inverter IGBT module temperatures are continuously monitored by the gate driver
board where the highest temperature for each phase is read. The highest temperature is sent
to the VSD logic board where the temperature is compared against a threshold value. If any
IGBT module on the motor/inverter exceeds this threshold value then this shutdown will occur.
The cooling fans and pumps for the VSD will continue to run until the temperature of all the
IGBT modules fall below 165°F (73.8°C). In April of 2016 the shutdown control for the fan(s)
and pump(s) was changed. The control will now keep the fan(s) and pump(s) running for 2
minutes after the fault occurred. This change occurred in software version C.HYP.03.04.01, and
C.HYP.04.04.01. When this happens, the unit’s fan(s) and water pumps shall be de-energized.
When the condition clears, the chiller can be started after the CLEAR FAULTS key is pressed.
DRIVE MODEL
HIGH PHASE INPUT BASEPLATE TEM-
PERATURE SHUTDOWN VALUE
0490, 0490A, 0612A, 0730A, 0774 190°F (87.8°C)
1278A (380-414 VAC) 180°F (82.2°C)
1278A (460 VAC) 170°F (76.6°C)
VSD – HIGH PHASE B
MOTOR BASEPLATE
TEMPERATURE
See “VSD – HIGH PHASE A MOTOR BASEPLATE TEMPERATURE” message preceding.
VSD – HIGH PHASE C
MOTOR BASEPLATE
TEMPERATURE
See “VSD – HIGH PHASE A MOTOR BASEPLATE TEMPERATURE” message preceding.
TABLE 12 - SAFETY SHUTDOWN MESSAGES (CONT'D)