82
PLZ-4WL
External Control
J1 connector pin arrangement
External control connector
J1 connector pin number
J1
1
25
2
26
Pin
No.
Signal Name
Description
1
EXT CONT MODE
For controlling CC, CR, and CP mode through external voltage. 0 V to 10 V correspond
to 0 % to 100 % of the rated current (CC mode) or rated power (CP mode).
In CR mode, external input voltages in the range of 0 V to 10 V correspond to the range
of resistances from the maximum resistance to the minimum resistance.
2
A COM
Connected to the negative load input terminal.
3
EXT CONT ADD
For controlling CC mode through external voltage. External input voltages in the range
of -10 V to +10 V correspond to the range of currents from 0 % of the rated current to
100 % of the rated current. The value is superimposed to the panel and remote control
setting.
4
A COM
Connected to the negative load input terminal.
5
EXT CONT CV
For controlling CV mode through external voltage. External input voltages in the range
of 0 V to 10 V correspond to the range of voltages from 0 % of the rated voltage to 100
% of the rated voltage.
6
A COM
Connected to the negative load input terminal.
7
IMON
Current monitor output. 10 V for full scale (H/L range), 1 V for full scale (M range)
8
A COM
Connected to the negative load input terminal.
9
LOAD ON/OFF CONT
The load is turned on by a low (or high) CMOS level signal. The logic levels can be
switched. The internal circuit is pulled up to 5 V by a 10 k
resistor.
10
RANGE CONT 1
Input for switching the range externally.
1
The internal circuit is pulled up to 5 V by a 10
k
resistor. Valid only when the front panel setting is H range.
11
RANGE CONT 0
12
ALARM INPUT
The alarm is activated by a low CMOS level signal. The internal circuit is pulled up to 5
V by a 10 k
resistor.
13
TRIG INPUT
Unpauses the PLZ-4WL if a low CMOS level signal is applied for 10 µs or more. The
internal circuit is pulled up to 5 V by a 10 k
resistor.
14
ALARM CLEAR INPUT
The alarm is cleared by a low CMOS level signal. The internal circuit is pulled up to 5 V
by a 10 k
resistor.
15
A COM
Connected to the negative load input terminal.
16
A COM
Connected to the negative load input terminal.
17
LOAD ON STATUS
Turns on when the load is on. Open collector output by a photocoupler.
2
18
RANGE STATUS 1
Range status output.
3
Open collector output by a photocoupler.
2
19
RANGE STATUS 0
20
ALARM STATUS
Turns on when a protection function (OVP, OCP, OPP, OHP, REV, or UVP) is activated
or when an external alarm is applied. Open collector output by a photocoupler.
2
21
N.C.
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