Johnson Controls YORK YK MaxE, Operation Manual

Page: 150 / 184

JOHNSON CONTROLS
150
FORM 160.54-O1
optiView Control Center
Manual 160.46-OM3.1 for details of Mod “A” Solid
State Starter initiated shutdowns and 160.54-M1 for
CM-2 initiated shutdowns. The chiller will automati-
cally restart when the Motor Controller contacts close.
On some shutdowns, the respective device automatically
closes the contacts when the fault condition clears. Other
shutdowns require the Operator to perform a Manual
Reset at the respective device.
Device Manual Reset Fault Automatic Reset Fault
CM-2 Module Overload None
Overload Phase Rotation/Loss
Solid State Starter High Temp (>212°F) High Temp start inhibit (>110°F)
Fault Current Trigger Board Out-of-Lock
“ MOTOR COnTROLLER – LOSS OF
CURREnT ”
The Compressor Motor current decreased to 10% Full
Load Amps (FLA) for 25 continuous seconds while the
chiller was running. This could be caused by the starter
de-energizing during run or a defect in the motor cur-
rent feedback circuitry to the Control Center. The chiller
will automatically restart at the completion of “System
Coastdown”.
“ POWER FAULT ”
The CM-2 Current Module (Electro-Mechanical starter
applications) or Solid State Starter Logic Board (Mod
“A” Solid State Starter applications) has shutdown the
chiller because it detected a fault condition that places
the motor at risk. These devices open and close the Mo-
tor controller “CM” contacts (located on the respective
device and connected between TB6-16 and TB6-53 in the
Control Center) in < 3 seconds to initiate the shutdown and
produce this message. An LED on the respective device
illuminates to identify the specific fault that has occurred.
Refer to YORK Manual 160.46-OM3.1 for details of
Solid State Starter initiated shutdowns and 160.54-M1 for
CM-2 initiated shutdowns. The chiller will automatically
restart when the contacts close.
device shutdown
CM-2 Module Power fault
Solid State Starter Power Fault
Half Phase
“ COnTROL PAnEL – SCHEDULE ”
The programmed Daily Schedule Setpoint has shutdown
the chiller. If this occurs while the chiller is running,
the Pre-rotation Vanes are driven fully closed prior to
shutting down the chiller. The chiller will automatically
restart at the next scheduled start time.
“ STARTER – LOW SUPPLY LInE VOLTAgE ”
(MOD “A” SOLID STATE STARTER)
The voltage in any phase of the AC Power Line Voltage
supplying the Solid State Starter has decreased to the low
line voltage threshold for 20 continuous seconds. The
chiller will automatically restart when the voltage returns
to the restart level. The thresholds are as follows:
Supply Voltage Range (Volts) Shutdown (Volts) Restart (Volts)
380 305 331
400 320 349
415 335 362
440-480 370 400
550-600 460 502
Supply Voltage Range disabled none N/A
“
STARTER – HIgH SUPPLY LInE VOLTAgE
”
(MOD “A” SOLID STATE STARTER)
The voltage in any phase of the AC Power Line Voltage
supplying the Solid State Starter has increased to the high
line voltage threshold for 20 continuous seconds. The
chiller will automatically restart when the voltage returns
to the restart level. The thresholds are as follows:
Supply Voltage Range (Volts) Shutdown (Volts) Restart (Volts)
380 415 414
400 436 435
415 454 453
440-480 524 523
550-600 655 654
Supply Voltage Range disabled none N/A
“
PROXIMITY PROBE – LOW SUPPLY
VOLTAgE ”
(Style E and earlier chillers with G, H, or J compressors
and Style F and later chillers with J or H3 compres-
sors).
This message indicates the +24VDC power supply volt-
age to the Proximity Probe has decreased to +19.0VDC.
This is below the minimum level required for reliable
operation. The chiller will automatically restart when the
voltage increases to greater than or equal to 19.7VDC.