Operating instructions

Vector Control Chassis Type Frequency Converter Faults and Alarms
SIEMENS AG 476 869 4070 76 J AB-74
SIMOVERT MASTERDRIVES Operating Instructions 11-7
Fault
number
Fault Counter-measure
F051 Speed encoder
Digital tachometer or analog tachometer
sensing are faulty.
Check the parameters:
• P130 Src SpdActV
• P151
• P138 AnalogTachScale
• P109 Motor #PolePairs
The product of P109 and P138 must be
smaller than 19200.
Check or replace tachometer. Check
connection to tachometer.
Replace CU
F052 n-Cntr. Input
The fault input on the TSY has been active.
Cancel tachometer with control track
P130 Src Spd ActV
Replace TSY.
Check the tachometer connection at the TSY.
Several versions are possible, depending on
the type of tachometer.
F053 Tachometer dn/dt
The permissible change value of the speed
encoder signal P215 dn(act,perm) has been
doubly exceeded.
Check tachometer cables for interruptions.
Check earthing of tachometer shield.
• The shield must be connected both at the
motor and the converter side.
• The encoder cable must not be
interrupted.
• The encoder cable must not be laid
together with the power cables.
• Only recommended encoders should be
used.
• In the case of a signal fault, the DT1
board may have to be used.
If necessary, change P215
F054 Sensor board initialization fault Fault value r949
1: Board code incorrect
2: TSY not compatible
20: TSY board double
F056 SIMOLINK telegram failure Check:
• Fiber-optic cable ring
• Whether an SLB in the ring is without
voltage
• Whether an SLB in the ring is faulty
• Check P741 (SLB Tlg OFF)
F058 Parameter error during parameter task No counter-measure