9-8 Siemens Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
Fault Description
No.
Cause as a function of fault value
(r047.001, r949.001 or r949.009 with acknowledged error)
Further information (r047.002 to r047.016)
F021 External fault 1
(active in all operating states)
Bit 15 in control word 1 was in the log. "0" state for longer than the time set in P360 index 001
F022 External fault 2
(active in all operating states)
Bit 26 in control word 2 was in the log. "0" state for longer than the time set in P360 index 002
Fault message from free function block FB2
(active in all operating states)
Fault value:
F023
1 the binector wired via parameter U100 Index.001 is in the state log.”1”
2 the binector wired via parameter U100 Index.002 is in the state log.”1”
3 the binector wired via parameter U100 Index.003 is in the state log.”1”
4 the binector wired via parameter U100 Index.004 is in the state log.”1”
Fault message from free function block FB3
(active in all operating states)
Fault value:
F024
1 the binector wired via parameter U101 Index.001 is in the state log.”1”
2 the binector wired via parameter U101 Index.002 is in the state log.”1”
3 the binector wired via parameter U101 Index.003 is in the state log.”1”
4 the binector wired via parameter U101 Index.004 is in the state log.”1”
9.1.2.4 Fault messages from motor sensors
F025 Brush length too short
(active in operating states of ≤ o3)
When parameter P495=2 (binary sensing of brush length), fault message at log.”0” signal (longer than 10s) at terminal 211
Possible fault causes
♦ Encoder for brush length has responded
♦ Open circuit in encoder cable
F026 Bearings in bad condition
(active in operating states of ≤ o6)
When parameter P496=2 (bearing condition sensing) fault message at log. “1” signal (longer than 2 s) at terminal 212
Possible fault causes
♦ Encoder for bearing condition has responded
F027 Air-flow monitoring of motor fan
(active in operating states of < o6)
When parameter P497=2 (air-flow monitoring), fault message at log ”0” signal (longer than 40s) at terminal 213
Possible fault causes
♦ Encoder for fan monitoring has responded
♦ Open circuit in encoder cable
F028 Motor overtemperature
(active in operating states of ≤ o6)
When parameter P498=2 (thermostat connected), fault message at log. “0” signal (longer than 10s) at terminal 214
Possible fault causes
♦ Thermostat for monitoring motor temperature has responded
♦ Open circuit in encoder cable
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