REXROTH DIAX04, Руководство по устранению неисправностей

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DIAX04 ELS-06VRS Description of Diagnostic Letters F... and E...
4-23
DOK-DIAX04-ELS-06VRS**-WA01-EN-P
F820 Braking resistor overload
Cause:
The energy of a braking motor cannot be converted quickly enough by the
bleeder resistors.
The energy converted by the internal bleeder is analyzed. When the
maximum energy capacity of the bleeder is exceeded, it is shut off. The
bleeder overload error is generated.
Remedy:
The braking slope should have a flatter parameter, or the bleeder capacity
can be increased by adding an additional bleeder.
The drive can be used again after the bleeder has cooled down.
F822 Encoder 1 failure: signal amplitude wrong
The analog signals of a motor measurement system are used for high
resolution analysis of that measurement system. These are monitored
according to two criteria:
1. The pointer length, which is calculated from the amplified sine
and cosine signals, must be >5 V while the encoder frequency is
<10 kHz. Above that frequency it must be >1 V.
2. The maximum pointer length resulting from the sine and cosine
signals must not exceed 11.8 V.
[ ]
2 2
cos sin length pointer V
+ =
Fig. 4-6: Pointer length
For checking purposes the encoder signals can be routed to the analog
output of the controller. This is done through the following parameter
setting:
Channel 1:
P-0-0420 = 0; P-0-0421 = 1 (SIN encoder 1); P-0-0422 = 1.0
Channel 2:
P-0-0423 = 0; P-0-0424 = 2 (COS encoder 1); P-0-0422 = 1.0
The input amplifier amplifies the 1Vss encoder signal to the nominal
pointer size of
0.5V * 18.4 = 9.2V
which is then output. So with the appropriate setting of the oscilloscope
(X-Y operation mode) the following signal wave form is produced: