Parker AC890PX Series, Инженерный справочник

Страница: 152 / 460

8-12
C h a p t e r 8 : T r i p s & F a u l t F i n d i n g
AC890PX AC Drive
Checksum Fail
When the drive powers-up, non-volatile memory is checked to ensure that it has not been corrupted. In the rare event of
corruption being detected, the drive will not function. This may occur when replacing the control board with an
unprogrammed control board.
Drive Indications
The failure is indicated by the HEALTH and RUN LEDs showing SHORT FLASH, .
Referring to Chapter 4: "890SD Standalone Drive" - Reading the Status LEDs, you will note that this also indicates Re-
configuration mode, but this mode (and hence the indication) is not available to the drive unless controlled by an MMI or
Comms link.
Because you are controlling the drive locally (no MMI or Comms link etc.), the unit must be returned to Parker SSD Drives
for reprogramming, refer to Chapter 9: “Routine Maintenance and Repair”. However, if you have access to a keypad or
suitable PC programming tool, the unit can be reset.
Keypad Indications (when connected)
The MMI displays the message opposite.
Acknowledge the message by pressing the
E key. This action automatically loads
default parameters and the ENGLISH 50Hz Product Code.
If your unit was using a different Product Code, you must reload the Product Code of
your choice and perform a Parameter Save (SAVE/COMMAND menu) in that order.
If data will not save correctly, the keypad will display a failure message. In this case,
the drive has developed a fault and must be returned to Parker SSD Drives. Refer to Chapter 9: “Routine Maintenance and
Repair".
HEALTH
LOCAL
SEQ
REF
1
1 DEFAULTS LOADED
* CHECKSUM FAIL*