NORDAC PRO (SK 500P) – STO/SS1
6 / 7 TI 80_0030 - 3219
4 Operating status messages
All faults which result in a switch-on block of the frequency inverter and are associated with functional
safety are listed below.
Loss of safe function
In case of an EEPROM fault, the digital input functions "Block Voltage" and "Fast Stop" of the SS1-t
input VISD_24V may not function or may function incorrectly.
• After an EEPROM fault, the digital inputs associated with safety functions must be revalidated.
This ensures that the safety functions operate correctly.
Error messages
Display in the
SimpleBox / ControlBox
Fault
Text in the ParameterBox
Cause
• Remedy
Group Error
(SafetyCirc)
While the frequency inverter was enabled, the Safe Pulse
Block safety circuit has triggered.
(Safety SS1)
While the frequency inverter was enabled, the SS1 function
(controlled switch-off) has triggered.
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