SECTION EIGHT – Safety function RESTART INTERLOCK (Optional)
DS2000 USER’S MANUAL (rev.C)
8.6
When a wrong signal status is monitored, the line contactor must disconnect the drive supply,
taking care of the the release time (max 100 ms) of the signal. An error message must be
available to make the malfunction of the safety circuit visible.
WARNING: In case of malfunction the whole safety circuit need to be checked by qualified
personnel taking into account the necessary safety procedures
8.4.2 SOFTWARE CHANNEL
The software channel interrupts the signal path to the IGBT drivers with the standard
software procedure. To disable the axis, the input “Drive Enable” of the J2B connector (pin7
and 8) showed in Section 2, must become low (0V). See par.2.14 for the sequence times.
8.4.2.1 MONITORING SOFTWARE CHANNEL
A failure in the software channel operation cannot be detected by the drive. It is possible to
define a cyclic test during the working conditions in order to find the failure of the software
channel. For example, at the restarting after a stop it is possible to put the drive in the starting
condition, to give a reference signal with only the SW channel active (Drive Enable OFF) and
to verify that the motor does not rotate.
In case of fault the motor must be stopped via the hardware channel(s) and via the line
contactor. The motor must not restart until the fault has been fixed.
WARNING: In case of malfunction the whole safety circuit need to be checked by qualified
personnel taking into account the necessary safety procedures
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