184
9.2 P
OWER
SUPPLY
ALS 256
ALS
20X
256
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 volt-
age 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 firmware >
1.33). The machne does
not
stop. If the warnng is ignored and
no steps are taken to decrease the temperature, the outputs
24 V and 17/75 V are switched off as soon as a critical over-
temperature is reached. The logic voltage for the CPU is kept
upright. An error message appears on the display. The ma-
chine 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 und-
ervoltage 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 necessary.
Symptom
Diagnosis / possible cause
Содержание ALS 204
Страница 1: ...ALS 204 206 256 SERVICE INSTALLATION MANUAL Labeller Edition 8 3 2012 Original version ...
Страница 2: ......
Страница 125: ...125 7 ELECTRONICS DESCRIPTION 7 3 CIRCUIT BOARDS ALS 20X 256 Layout diagram 125 Layout diagram for the CPU board ...
Страница 128: ...128 7 ELECTRONICS DESCRIPTION 7 3 CIRCUIT BOARDS ALS 20X 256 Layout diagram 129 Layout diagram for motor driver board ...
Страница 223: ......