Kikusui PAD-L III Series, Operation Manual

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4-14 Applied Operation PAD-L
4.3.2 Output ON/OFF control (II)
This method is used to control ON/OFF for the output using an external contact and
is capable of accurately securing the output to 0 V when the external contact is
closed.
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NOTE
• If this method is used together with "Output voltage control with an external
voltage" described in 4.2.3, ON/OFF for the output can no longer be
controlled.
• In this method, the current set value will be displayed when the CURRENT/
VOLT. LIMIT switch is pressed while the output is OFF, but not the voltage
set value.
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Connecting and setting procedure
1. Turn off the POWER switch.
2. Connect a contact S (switch) across the control terminal 4 and 5 as
shown in Fig. 4-10.
WARNING
• Isolate the external contact (S) and the cable connected to it with
at least the isolation voltage of the unit. For details, see 2.6
"Grounding the output terminal."
• When using a shielded cable for the connection, protect the
uncovered part of the cable with an insulation tube of at least the
isolation voltage of the unit.
CAUTION
• If the contact S is disconnected, the output will be turned ON. Use
crimp terminals or the like to secure this contact in place.
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NOTE
• To reduce the effects of noise on output, use a 2-core shielded wire or a
twisted-pair wire to connect to terminals, making them as short as possible.
Longer wiring results in greater susceptibility to the effects of noise, and use of
cables with antinoise measures may not solve the problem, resulting in
improper operation.
When using a shielded wire, connect the shield to the + (pos.) output terminal.
• The release voltage across the control terminals 4 and 5 is approx. 10 V, and
the short circuit current is approx. 2 mA.
• Use external contact points of contact rated 20 VDC min. and 100 mA min.
• For long-distance wiring, use a small relay and extend the coil side of that
relay.
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