REXROTH DIAX04, Руководство по устранению неисправностей

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4-6
Description of Diagnostic Letters F... and E... DIAX04 ELS-06VRS
DOK-DIAX04-ELS-06VRS**-WA01-EN-P
F233 External power supply error
Cause:
The DEA plug-in modules have isolated inputs and outputs. Proper
operation of those inputs and outputs requires an external 24 volts to be
applied. The drive monitors that voltage as soon as a DEA plug-in module
has been installed.
Remedy:
Check the external 24-V power supply.
Name: Unit: min.: typ.: max.:
External operating
voltage
+
U
L
V 18 24 32
External current
consumption
I
L
mA 100
Fig. 4-2: External power supply
See also the functional description: "Digital I/O Functional Principle"
F236 Excessive position feedback difference
Cause:
In the communication phase 4 transition check command, position
feedback value 1 and position feedback value 2 are set to the same
value, and the cyclic evaluation of both encoders is started. In cyclic
operation (phase 4), the position feedback difference of both encoders is
compared with
S-0-0391, Monitoring window feedback 2 . If the amount
of the difference exceeds the monitoring window, the error F236
Excessive position feedback difference is diagnosed, the parameter-
selected error response is performed, and the reference bits of both
encoders are cleared.
Notes: The monitoring is off, when the parameter S-0-0391 ,
Monitoring window feedback 2 is set to the value 0.
Possible Causes:
1. Incorrect parameter for encoder 2:
•
S-0-0115, Position feedback 2 type
•
S-0-0117, Feedback 2 resolution
2. Incorrect parameter setting of mechanical system between motor
shaft and encoder 2:
•
S-0-0121, Input revolutions of load gear
•
S-0-0122, Output revolutions of load gear
•
S-0-0123, Feed constant
3. The mechanical system between motor shaft and encoder 2 is not
rigid (e.g. gear play, slip).
4. Defective encoder cable
5. Maximum input frequency of the encoder interface exceeded
6. Encoder 2 (optional) is not mounted to the driven axis.
7. Incorrect reference measure of an absolute encoder