140
7.4 P
OWER
SUPPLIES
/ T
RANSFORMER
ALS
20X
256
7.4.3
Power supply ALS 256
Connections and configuration
[144] Connections on the A8171 power supply unit.
A Connection motor driver board
B Connection I
2
C bus (--> CPU board)
C Connection to CPU board
D Socket for power cable
E Mains power switch
The ground connections for 17 V, 24 V and 75 V
have different potential (are not connected)!
Checking the power supply
Remove the power supply.
At connector C connect the pins 5 and 9 to enable
the power supply.
Make sure that at least the following currents are
drawn before measuring the output voltages:
– Logic (5.2 V): 200 mA
– Motor (17 V): 10 mA
Measure the output voltages.
Pin
Description
1
+17 V
2
+17 V Ground
3
+75 V
4
+75 V Ground
Pin
Description
1
5.2 V
2
NMI
3
SCL
4
SDA
5
GND
A A
C
D E
B
1
2
3
4
1
2
3
4
5
Pin
Description
1, 2
+24 V
3, 4
+24 V Ground
5, 6
+5.2 V
7, 8
+5.2 V Ground
9
Enable
+24/+75 V
(Input)
10
Power Fail
(Output)
10
8
6
4
2
1 3 5 7 9
Housing
Summary of Contents for ALS 204
Page 1: ...ALS 204 206 256 SERVICE INSTALLATION MANUAL Labeller Edition 8 3 2012 Original version ...
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