Leroy-Somer digitax st User Manual page 50

Table 9.2 control word bit functions
Bit Function Description
0 ENABLE
1 RUN FWD
2 JOG FWD
3 RUN REV
4 FWD REV
5
6
STOP
7 AUTO
8 REMOTE
9 JOG REV
10 Reserved
11 Reserved
12
13 RESET
KEYPAD
14
WDOG
15 Reserved
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Set to 1 to enable the drive. Resetting to 0 will immediately disable the drive,
and the motor will coast to a stop. The external HARDWARE ENABLE signal
must also be present before the drive can be enabled.
Set to 1 (with ENABLE set to 1) to run the motor in the forward direction. When
reset to 0, the drive will decelerate the motor to a controlled stop.
Set to 1 to jog the motor forward. This signal needs to be used in conjunction
with the ENABLE bit. This signal is overridden by a RUN, RUN REV or RUN
FWD signal.
Set to 1 (with ENABLE set to 1) to run the motor in the reverse direction. When
reset to 0, the drive will decelerate the motor to a controlled stop.
Set to 1 to select the reverse direction. Set to 0 to run in the forward direction.
The RUN signal is used to start and stop the motor.
Set to 1 to run the motor. FWD REV is used to select the direction of motor
RUN rotation. When reset to 0, the drive will decelerate the motor to a controlled
stop.
Set to 1 to allow the sequencing bit to be latched. If NOT STOP is zero, all
NOT
latches are cleared and held at 0. Pr 6.04 must be correctly set for this to
function.
Set to 1 to enable fieldbus control of the drive Control Word. The Control Word
Enable (Pr 6.43) must also be set to 1. When reset to 0, the drive will operate
under terminal control.
Set to 1 to select digital speed reference 1 (Pr 1.21), and reset to 0 to select
analog reference 1 (Pr 1.36). REMOTE directly controls Pr 1.42, so reference
selector (Pr 1.14) and preset selector (Pr 1.15) must both be set to 0 (default)
for the REMOTE bit to work properly.
Set to 1 to jog the motor in reverse. This signal needs to be used in conjunction
with the ENABLE bit. This signal is overridden by a RUN/RUN REV/RUN FWD
command.
Set to 1 to trip the drive at any time. The trip display on drive will be CL.bit and
TRIP the trip code will be 35. AUTO (b7) has no effect on this function. The trip
cannot be cleared until TRIP is reset to 0.
A 0-1 transition of the RESET bit will reset the drive from a trip condition. If the
reason for the trip is still present, or another fault condition has been detected,
the drive will immediately trip again. When resetting the drive, it is
recommended to check the status word to ensure that the reset was
successful, before attempting to re-start the drive.
This watchdog is provided for an external keypad or other devices where a
break in the communication link must be detected. The watchdog system can
be enabled and/or serviced if this bit is changed from zero to one whilst the
control word enabled.
Once the watchdog is enabled it must be serviced at least once every second
or an SCL trip will occur. The watchdog is disabled when an SLC trip occurs,
and so it must be re-enabled when the trip is reset.
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