Operating instructions

Vector Control Chassis Type Frequency Converter Faults and Alarms
SIEMENS AG 476 869 4070 76 J AB-74
SIMOVERT MASTERDRIVES Operating Instructions 11-5
Fault
number
Fault Counter-measure
F026 UCE Ph. L2
There has been an UCE shutdown in phase
L2.
Check:
• Phase L2 for short-circuit or ground fault
(-X2:V2 – including motor).
• That CU is correctly inserted.
• That the switch for ‘SAFE OFF’ (X9/5-6) is
open (only for units with Order No. ...-11,
...-21,...-31,...-61).
F027 UCE Ph. L3
There has been an UCE shutdown in phase
L3.
Check :
• Phase L3 for short-circuit or ground fault
(-X2:W2 – including motor).
• That CU is correctly inserted.
• That the switch for ‘SAFE OFF’ (X9/5-6) is
open (only for units with Order No. ...-11,
...-21,...-31,...-61).
F028 Supply phase
The frequency and the amplitude of the DC
link ripple indicate a single-phase power
failure.
Check the supply voltage.
F029 Meas. value sensing
A fault has occurred in the measured value
sensing system;
• (r949 = 1) Offset adjustment not possible
in phase L1
• (r949 = 2) Offset adjustment not possible
in phase L3
• (r949 = 3) Offset adjustment not possible
in phases L1 and L3
• (r949=65) Autom. Adjustment of the
analog inputs is not possible
Fault in measured value sensing.
Fault in power section (valve cannot block)
Fault on CU
F035 Ext. fault 1
Parameterizable external fault input 1 has
been activated
Check:
• whether there is an external fault
• whether the cable to the appropriate
digital input has been interrupted
• P575 Src No ExtFault1
F036 Ext. fault 2
Parameterizable external fault input 2 has
been activated
Check:
• Whether there is an external fault
• Whether the cable to the appropriate
digital input has been interrupted
• P586 Src No ExtFault2