Johnson Controls YORK OPTIVIEW CONTROL CENTER, Руководство по эксплуатации

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JOHNSON CONTROLS
116
FORM 160.10-O1
ISSUE DATE: 4/27/2018
SECTION 3 - OPTIVIEW DISPLAY MESSAGES
VSD Shutdown – Requesting Fault Data
The VSD has shut down the chiller and the control
center has not yet received the cause of the fault from
the VSD, via the serial communications link. The VSD
shuts down the chiller by opening the motor controller
VSD STOP CONTACTS (located on the VSD Logic
Board and connected between TB6-16 and TB6-53 in
the control center). The control center microboard then
sends a request for the cause of the fault to the VSD
logic board via the adaptive capacity control (ACC)
board. Since serial communications are initiated every
two seconds, this message is typically displayed for a
few seconds and then replaced with one of the follow-
ing fault messages.
VSD – 105% Motor Current Overload
This shutdown is generated by the VSD logic board
and indicating that a motor overload has occurred.
The shutdown is generated when the VSD logic board
has detected that at least one of the three output phase
currents has exceeded 105% of the chiller Full Load
Amps (FLA) value for longer than seven (7) seconds.
The chiller FLA value is set by adjustment of the FLA
potentiometer on the VSD Logic Board.
VSD – High Converter Heatsink
Temperature
(Applicable to VSD with Part Number 371-02767-
XXX (60 Hz) and 371-03700-XXX (50 Hz))
This shutdown will occur if the heatsink temperature
exceeds 170°F. The chiller can be started after the fault
condition clears. If this message is displayed, make
sure there is adequate coolant level, check that the
coolant pump is operating when the chiller is running,
and check the strainer of the heat exchanger primary
for clogs and silt.
VSD – High Inverter Baseplate
Temperature
(Applicable to VSD with Part Number 371-02767-
XXX (60 Hz) and 371-03700-XXX (50 Hz))
This shutdown will occur if the baseplate temperature
exceeds 175°F. If this message is displayed, make sure
there is adequate coolant level, check that the cool-
ant pump is operating when the chiller is running, and
check the strainer of the heat exchanger primary for
clogs and silt.
VSD – High Phase (X) Inverter Heatsink
Temperature
(Style D VSD)
This shutdown will occur if the heatsink temperature
for current phase A, B, or C (denoted by X above) ex-
ceeds 158°F on any of the output pole assemblies. This
shutdown will seldom occur. In most cases where the
coolant temperature has risen abnormally, the VSD
will shut down on AMBIENT TEMPERATURE @
140.0°F before the heatsinks can reach 158°F. If this
message is displayed, make sure there is adequate
coolant level, ascertain the pump is operating when the
chiller is running, and check the strainer of the heat
exchanger primary for clogs and silt.
VSD – High Converter Heatsink
Temperature
(Style D VSD)
This shutdown will occur if the heatsink temperature
exceeds 158°F on any of the output pole assemblies.
This shutdown will seldom occur. In most cases where
the coolant temperature has risen abnormally, the VSD
will shut down on AMBIENT TEMPERATURE @
140.0°F before the heatsinks can reach 158°F. If this
message is displayed, make sure there is adequate
coolant level, check that the coolant pump is operating
when the chiller is running, and check the strainer of
the heat exchanger primary for clogs and silt.
VSD – High Phase (X) Inverter
Baseplate Temperature
(VSD part number 371-03789-xxx (503HP 60 Hz;
419HP 50 Hz)
The chiller has shutdown because the baseplate temper-
ature for current phase A, B, or C (denoted by X above)
has exceeded 158ºF. If this message is displayed, make
sure there is adequate coolant level, check that the
coolant pump is operating when the chiller is running,
and check the strainer of the heat exchanger primary
for clogs and silt.
VSD – Precharge Lockout
If the VSD fails to make precharge, the precharge relay
will cut out for ten (10) seconds during which time the
VSD fans and coolant pumps will remain energized in
order to permit the precharge resistors to cool. Follow-
ing this ten second cool down period, precharge will
again be initiated. If the VSD fails to make precharge
after three consecutive tries, the unit will shut down,
lockout, and display this message.