Johnson Controls York YCIV A Series - Page 11

JOHNSON CONTROLS
11
FORM 201.23-NM2
ISSUE DATE: 3/9/2015
SECTION 8 - MICROPANEL ................................................................................................................................231
VSD Operation and Controls ........................................................................................................................ 231
VSD Logic Board ................................................................................................................................. 231
VSD Start/run Initiation ........................................................................................................................ 231
PWM Generator Type and Carrier Frequency .....................................................................................231
Short Circuit Protection Minimum Output Pulse Width and Interlock Delay ........................................ 231
Modulating Frequency ......................................................................................................................... 231
Maximum VSD Frequency ..................................................................................................................232
VSD % Modulation ..............................................................................................................................232
VSD Cooling and Cooling Loop ...........................................................................................................232
IGBT Module Baseplate Temperature Sensing ...................................................................................233
VSD Internal Ambient Temperature Sensing ....................................................................................... 234
Pre-charge ...........................................................................................................................................234
Run Mode / Unit Restart ...................................................................................................................... 234
DC Bus Voltage Sensing and Scaling .................................................................................................235
Current Sensing and Scaling ...............................................................................................................235
VSD Transmitted Operating Parameters .............................................................................................235
VSD Safeties (Faults) ................................................................................................................................... 235
Pre-charge Low DC Bus Voltage (Software) Fault .............................................................................. 236
Pre-charge DC Bus Voltage Imbalance (Software) Fault .................................................................... 237
High DC Bus Voltage (Hardware) Fault ...............................................................................................237
Low DC Bus Voltage (Software) Fault .................................................................................................237
DC Bus Voltage Imbalance (Software) Fault .......................................................................................237
High Motor Current (Hardware) Fault .................................................................................................. 238
Motor Current Overload (Software) Fault ............................................................................................238
Motor Current Overload (Hardware) Fault ...........................................................................................238
IGBT Gate Driver (Hardware) Fault .....................................................................................................238
High Baseplate Temperature (Software) Fault ....................................................................................239
High VSD Internal Ambient Temperature (Software) Fault .................................................................. 239
Single Phase Input (Hardware) Fault ..................................................................................................239
Power Supply (Hardware) Fault .........................................................................................................240
Run Relay (Software) Fault ................................................................................................................240
VSD Logic Board Failure (Software) Fault .........................................................................................240
VSD CT Plug (Hardware) Fault ...........................................................................................................240
VSD Fault Data ..................................................................................................................................240
Fault Relay/Fault Acknowledge Bit ......................................................................................................241
VSD Fault Compressor Start Inhibit ...................................................................................................241
Unit Warnings ............................................................................................................................................... 241
Unit Warning Operation ....................................................................................................................... 241
Low Battery Warning ...........................................................................................................................241
Invalid Number of Compressors Warning............................................................................................242
Invalid Serial Number Warning ............................................................................................................242
Optimized Efciency Disabled ............................................................................................................. 242
Unit Safeties .................................................................................................................................................243
Unit Safety Operation ..........................................................................................................................243
High Ambient Temp Fault ....................................................................................................................243
Low Ambient Temp Fault .....................................................................................................................243
Low Leaving Chilled Liquid Temp Fault ............................................................................................... 243
VSD Communications Failure Fault ....................................................................................................244
TABLE OF CONTENTS (CONT'D)