Siemens N32415

What the Fault Means

Fault: Encoder 2: Amplitude alarm track A or B (A^2 + B^2)

Likely causes

• The amplitude (root of A^2 + B^2) for encoder 2 exceeds the permissible tolerance
• Alarm value (r2124, interpret hexadecimal): yyyyxxxx hex: yyyy = Angle xxxx = amplitude, i.e
• root of A^2 + B^2 (16 bits without sign) The nominal signal level of the encoder must lie in the range 375 mV to 600 mV (500 mV -25/+20 %)
• The response threshold is < 230 mV (observe the frequency response of the encoder)

Solution and Safe First Checks

1. check the speed range, frequency characteristic (amplitude characteristic) of the measuring equipment is not
2. check that the encoder cables and shielding are routed in compliance with EMC.
3. check the plug connections.
4. replace the encoder or encoder cable.
5. check the Sensor Module (e.g. contacts).
6. if the coding disk is soiled or the lighting aged, replace the encoder.

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

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