8400 StateLine C | Reference manual
Device control (DCTRL)
Device state machine and device statuses
90 L Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011
4.2.4 SafeTorqueOff
Integrated safety systems with Inverter Drives 8400
Drive controller of the 8400 series can be equipped with the integrated "Safe torque off
(STO)" safety system.
The integrated safety system is applicable on machines for the protection of persons.
The drive function is still carried out by the drive controller. The safety system provides safe
inputs. If the safety system is activated, it executes control functions according to EN
60204-1 directly in the drive controller in case of errors.
Safety state
If the drive controller is switched off by the safety system, the device changes to the
"SafeTorqueOff" status.
If the safety system deactivates the "Safe torque off (STO)" request, the device changes to
the "ReadyToSwitchOn
" status.
LED DRIVE READY LED DRIVE ERROR Display in C00137 Display in status word 1 (C00150)
Bit 11 Bit 10 Bit 9 Bit 8
OFF SafeTorqueOff 1 0 1 0
Note!
This device status is only possible in connection with an integrated safety
system and if a power section supply is available!
Detailed information on the integrated safety system can be found in the
hardware manual!
The hardware manual contains important notes on the safety system which
must be observed!
• The hardware manual has been stored in electronic form on the data carrier
supplied with the 8400 drive controller.
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