Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE - Manual (Page 289)

TROUBLESHOOTING 10-47
1557-UM050F-EN-P – June 2013
# FAULT / ALARM PROBABLE CAUSE RECOMMENDED ACTION
3
DRIVE DOES NOT
RESPOND TO START
COMMAND (CONT‟D)
4. LOCAL/REMOTE SWITCH IN
WRONG POSITION
5. NORMAL/OFF/TEST SELECTOR
IN OFF POSITION
6. NO DC POWER
7. GREEN LED OFF ON DRIVE
CONTROL BOARD
8. LEDs ON DRIVE I/O BOARD ARE
OFF
9. NO COMMAND FROM
CUSTOMER‟S PLC
10. REMOTE I/O COMMUNICATION
MODULE INDICATING ERROR
11. NO POWER SUPPLY TO
TACHOMETER
(IF EQUIPPED)
12. DEFECTIVE MOTOR OUTPUT
CAPACITORS
4A. POSITION OF THE SWITCH TO
PROPER POSITION
B. CHECK THE INTEGRITY OF
CONTACTS
C. CHECK THE REMOTE I/O BOARD FOR
PROPER LED TO BE ON
5A SWITCH TO NORMAL POSITION
6A. CHECK FOR THE PRESENCE OF AC
CONTROL VOLTAGE
B. CHECK FOR DC VOLTAGE FROM
DC/DC CONVERTER
7A. CHECK FOR THE +5V, +15v, -15V AT
DOB‟s
B. REPLACE THE FIRMWARE CHIPS
C. CHECK THAT THE RIBBON CABLES
ARE IN POSITION
D. REPLACE THE DCBs
8A. CHECK THE RIBBON CABLE FROM
LINE DCB TO I/O BOARD
B. CHECK FOR CONTROL POWER AT I/O
BOARD
9A. CHECK WHY CUSTOMER SIDE PLC
RUN COMMAND IS NOT PRESENT
B. IF A REMOTE I/O COMMUNICATION
MODULE (1203) IS USED, CHECK THE
DIP SWITCHES FOR PROPER
CONFIGURATION
10A. CHECK THAT THE C.P.B. IS
FUNCTIONAL (GREEN LED ON)
B. CHECK THE RIBBON CABLES FROM
C.P.B. TO BUL 1203 GD1
C. CHECK THE POWER SUPPLY AT 1203 GDI
D. CHECK WHETH
ER CUSTOMER‟S
CABLES ARE TERMINATED AT 1203 GD1
11A. CHECK THE POWER SUPPLY TO
TACHOMETER
B. CHECK THE CABLING TO
TACHOMETER
C. CHECK THE FUNCTIONALITY OF THE
TACHOMETER
12A. CHECK THE INTEGRITY OF THE
MOTOR OUTPUT CAPACITORS BY
MEGGERING/CHARGE- DISCHARGE
METHOD