PMX_MULTI
User’s Manual
63
External Control
Output On/Off Control
This section explains how to use an external contact to control the output on and off states.
To reduce the influence of noise on the output, connect a 2-core shielded wire or a twisted-pair wire across
the external contact, and keep the wire as short as possible. If the wiring is long, it becomes easy for noise
to influence the operation of the PMX. Even if you use cables that are designed to suppress noise, the
PMX may not operate properly.
If you use a shielded cable, connect the shield to the chassis or ground.
To use an external contact to control the output on and off states, set the appropriate CONFIG parameter
(CF04:
ON
). Then, select the logic setting from the following two options.
• Turn the output on with a LOW level signal (CF05:
LO
)
When pin 8 (CH1), pin 9 (CH2), pin 10 (CH3), or pin 11 (CH4) of the CONTROL TERMINAL is set to
LOW level (0 V to 0.5 V) or is shorted, the output is turned on.
• Turn the output on with a HIGH level signal (CF05:
HI
)
When pin 8 (CH1), pin 9 (CH2), pin 10 (CH3), or pin 11 (CH4) of the CONTROL TERMINAL is set to
HIGH level (4.5 V to 5 V) or is opened, the output is turned on.
When you are using an external contact to control the output on and off states, the OUTPUT and OUTPUT
ALL keys on the front panel are disabled.
If the delay function is enabled (“DELAY” is shown), you cannot use an external contact to control the out-
put on and off states (CF04). Disable the delay function.
WARNING
Risk of electric shock.
• Ensure that the insulation of external contact (S) and the connected cable is greater
than or equal to the isolation voltage of the product. For details on the isolation
voltage of each model, see “Specifications”
• When using shielded cables for the connection, protect the uncovered sections of
the shielded cable by using insulation tubes whose withstand voltage is greater
than the PMX’s isolation voltage.
