Maintenance; Fault Tracing; Safety Data And Block Diagrams; Without An Fso Module - ABB ACS880 Series User Manual

ATEX-certified motor thermal protection function with PTC thermistor relays (+L513+Q971) 27

Maintenance

After the operation of the safety circuit has been verified at start-up, the circuit requires a
periodic proof test at least every two years.
If you change any wirings or components related to the motor thermal protection function
after the start-up, repeat the procedure given in section
test (page 26).

Fault tracing

For the warning and fault messages generated by the drive, see the drive firmware manual.
For the fault indication LEDs of the PTC relays, see section
For the status LEDs of the FSO module, see the FSO module user's manual.

Safety data and block diagrams

The safety block diagrams show the components that are included in the safety data
calculations.
￭

Without an FSO module

1 Customer motor PTC sensor(s)
2 Thermistor relay(s)
• K74
• (K75)
• (K76)
3 Drive STO
SIL
1
1
HFT
0
Start-up and acceptance
PTC thermistor relays (page
2
T
1
2 years
3
PFD (1...3 relays)
avg
5.00E-2
3AXD10000331763 E
22).