64 P2077SB/EN 2011-09 77l_Fehlersuche-en.fm, 06.09.2011
Troubleshooting
15
15.2 DGD-IS
15.2.1 Transducer
When an operating failure occurs, the torque output is set to an output value of > 6.5 V and an
error bit is set in the operating data memory.
After an operation error, the transducer remains in the "operation error" state until one of the following
events occurs:
• the operating voltage of the transducer is disconnected
• the transducer receives a calibration signal via the CAL input (pin K).
• the error bit in the operating memory is reset via the RS422 RS422 interface.
Error
Description
Possible causes Measures and remedies
DGD-IS does not turn Motor defective
Gearing defective
Tightening module TSE/TUSE
defective
➔ Replace the DGD-IS
Cable defective
➔ Replace the cable
Loud noises Gearing wear
➔ Replace the DGD-IS
Error
Description
Possible causes Measures and remedies
Output signal is not linear
Measuring hub was over-
stretched
➔ Send the transducer to DGD
for repair / recalibration
Offset voltage is too high
Measuring hub was over-
stretched
No output signal Pre-amplifier is defective
Torque output is set to an
output value > 6.5 V
Error bit is set in the operating
data memory
CPU NOK
• internal transmission to D/A
converter fails
HF section NOK
• HF telemetry transmission
fails
• no measuring shaft (rotor)
present
• rotor electronics defective
• gap between rotor and stator
antenna too large
Supply voltage
• voltage under low supply
voltage limit
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