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For current not shown in tables 3-1 and 3-2 use formula: Maximum length=500/(current*resistivity)
Where current is expressed in ampers and resistivity in ohms/km or ohms/1000ft.
3.7.2 Wire termination
The wires should be properly terminated with terminals securely attached. DO NOT use non
terminated wires for load connection at the power supply.
At local sensing, short between +LS or +S to -V or -S or -LS will cause damage to the
power supply. Reversing the sense wires might cause damage to the power supply
3.7.3 Single load connection, Local Sensing
Fig. 3-1 illustrates the connection of a single load to the power supply using local sensing. This
connection is made via the "External Control Connector" located on the rear panel of the power supply.
Local sensing is suitable for applications where load regulation is not critical.
14
13
- S
+S
COM
P
VCVP
VCCP
RCCP
2
1
EXTERNAL CONTROL
CONNECTOR
(ZUP rear panel view)
Fig. 3-1: Single load connection, Local Sensing
<
2.5
8.21
12.2
4
5.09
19.6
6
3.39
29.5
10
1.95
51.3
16
1.24
80.6
25
0.795
125.8
35
0.565
177.0
Table 3-2: Maximum wire length for 0.5V drop on lead (in meters)
at local and remote sensing.
- LS
+LS
On/Off
Output Good
VRFV
VRFI
RCVP
Maximum length in meters -
to limit voltage drop to 0.5V or less
5A
10A
20A
6.1
3.0
9.8
4.9
14.7
7.4
25.6
12.8
40.3
20.2
62.9
31.4
88.5
44.2
CAUTION
+LS
POWER
SUPPLY
- LS
14
50A
150A
1.2
0.4
2.0
0.7
2.9
1.0
1.7
5.1
8.1
2.7
12.6
4.2
17.7
5.9
- S
+V
- V
- S
+
LOAD
_
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