ABB ACQ80-04 Series Hardware Manual

Also see for ACQ80-04 Series: Quick installation and start-up guide Firmware manual Hardware manual Quick installation and start-up guide

Contents

ABB ACQ80-04 Series Hardware Manual Manual pdf 159 page image

Fault tracingThe indications given during the normal operation of the Safe torque off function are selectedby drive control program parameter 31.22.The diagnostics of the Safe torque off function cross-compare the status of the two STOchannels. In case the channels are not in the same state, a fault reaction function isperformed and the drive trips on an “STO hardware failure” fault. An attempt to use the STOin a non-redundant manner, for example activating only one channel, will trigger the samereaction.See the firmware manual of the drive control program for the indications generated by thedrive, and for details on directing fault and warning indications to an output on the controlboard for external diagnostics.Any failures of the Safe torque off function must be reported to ABB.The Safe torque off function 159