Service Manual
ALS/XLS 20x/256/272
02/2019 | 02
250
24 V and 17/75 V output voltages not
available.
The outputs 24 V and 17/75 V are switched on/off by a hardware
signal coming from the CPU board.
Check cable A6802 and replace if damaged.
The power supply signal input doesn´t work properly.
Replace power supply.
CPU hardware signal output doesn´t work properly.
Replace CPU board.
The power supply contains a temperature sensor.
If a sensor fault is detected during operation, the outputs
24V and 17/75 V are switched off for safety reasons. The
logic voltage for the CPU is kept upright. An error message
is displayed on the operation panel. The machine stops
(earliest with firmware > V 1.33).
If the sensor detects overtemperature during operation, a
warning is displayed on the operation panel. Furthermore,
the „Warning“ output is activated (both earliest with firm-
ware > 1.33). The machne does
not
stop. If the warnng is
ignored and no steps are taken to decrease the tempera-
ture, the outputs 24 V and 17/75 V are switched off as soon
as a critical overtemperature is reached. The logic voltage
for the CPU is kept upright. An error message appears on
the display. The machine stops (earlilest with firmware >
1.33).
Causes / countermeasures:
Surrounding temperature of the machine is too high.
Let the machine cool down.
Dust filter exhausted.
Clean or replace filter liner.
Machine fan defective?
Check function and replace fan if necessary.
17/75 V not available
The power supply switches off single outputs, if overload and/or
undervoltage occur.
Check if connected motordriver bear a short circuit or overload.
To do so, disconnect motordrivers separately from the power
supply and switch on the power supply again.
Check fuses on the motordriver boards and replace if neces-
sary.
Symptom
Diagnosis / possible cause
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Страница 258: ...Service Manual ALS XLS 20x 256 272 02 2019 03 258 Repair 199 Removing the fan C A B C D ...
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Страница 312: ...Novexx Solutions GmbH Ohmstraße 3 85386 Eching Germany 49 8165 925 0 www novexx com ...