GE Industrial Solutions 6KCV301DGF - Manual (Page 30)

—————— Digital General Function Card —————— 30
GEI-100430
- reading / writing of all the parameters
- loading and saving database commands
- moving to the READY status
The DGF can also arrive in this state from RUN or READY
status When the DGF is in this status the drive is placed into a
“Block” condition. From the IDLE status only the transition to
the READY status is possible. This transition is automatic only
at the start-up, in any other case it must be requested by the user.
Before leaving the IDLE status, the DGF always checks that
all functions are correctly configured. If not, the DGF remains
in IDLE.
READY: Normal status of the card at the start-up, if there are no problems
at configuration.
The control can move into this condition from any other one.
In READY, the card is ready to execute the user program that
has been loaded; the parameters of the card can be read or
written but the loading and saving commands of database cannot
be performed. Automatic structures with the drive are alive
but the read value are ignored and the values written are
fixed(usually set to 0). From this status the card can move to
IDLE, RUN and, in case of malfunction to ALERT. This is the
only status that allows the transition into RUN.
RUN: DGF can arrive in this condition only from READY. The
software executes periodically the following operations:
1 - execution of applications program
2 - synchronous and asynchronous communication with the
drive
3 - interface to any optional I/O cards
From RUN the card can move to the READY, IDLE or ALERT
conditions.
ALERT: The DGF can arrive in this condition from any other status, if
a system malfunction is detected. The transition to ALERT
status causes an alarm on the drive (“Opt2”).
The card can exit this status via an alarm reset command.
From ALERT, the card can move to READY or to IDLE.
The main events that can move this card into this status are:
- malfunctioning of the hardware
- errors of co-processor 80C387
- DPRAM communication errors
- watch dog hardware
- regulation alert