Siemens ECOFAST, Manual

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Commissioning and diagnostics
ECOFAST Motor Starters
GWA 4NEB 950 0562-12
4-7
Deutsc
h
Eng
lish
4.4 Diagnostics with the addressing and diagnostic unit
Diagnostic functions
The addressing and diagnostic unit (Order No.: 3RK1 904-2AB00) has
various diagnostic functions, for example:
• Recognition of incorrect polarity or overload
• Measurement of the AS-i-supply voltage
• Fault recognition with comment
• Indication of peripheral faults
Further information is given in the operating instructions.
4.5 Behavior in the event of faults
Possible faults
Faults and disturbances in the system are dealt with as follows:
Table 4-6: Possible faults and fault handling
Possible fault Action Indication /
LEDs Comment Reset
Bus fault Tripping AS-i Auto
*)
Process image fault Tripping SF OFF
Undervoltage AS-i Tripping SF U < 18 V Auto
*)
Undervoltage AUX PWR Tripping SF U < 18 V Auto
*)
Sensor supply - overload Tripping SF I > 200 mA Trip reset
Temperature sensor - overload Warning/
tripping SF Auto
*)
Auto reset
Trip reset
Temperature sensor - short circuit Warning/
tripping SF PTC type A Auto
*)
Auto reset
Trip reset
Temperature sensor - wire break Warning/
tripping SF Auto
*)
Auto reset
Trip reset
Self-test fault (device fault) Tripping SF Power OFF
Switching element defective Tripping SF
STATE Power OFF
*)
Fault is automatically acknowledged after elimination of the cause of the fault
(not to be confused with auto reset!)