PSW Series User Manual
128
The Ext-R
configuration is recommended for
safety reasons. In the event that the cables become
accidentally disconnected, the voltage output will
drop to zero. Under similar circumstances using
Ext-R , an unexpected high voltage would be
output.
If switches are used to switch between fixed
resistances, use switches that avoid creating open
circuits. Use short-circuit or continuous resistance
switches.
PSWEXT-R
Analog
connector
7
6
Output
Terminal
2 core shielded
wire or twisted
pair
Pin6 → EXT-R
Pin7 → EXT-R
Wire shield → negative (-) output terminal
1. Connect the external resistance according to the
connection diagrams above.
2. Set the F-90 (CV Control)
configuration settings to 2 for Ext-
R
or 3 for Ext-R .
Be sure to cycle the power after the power
on configuration has been set.
3. Press the Function key and confirm
the new configuration settings (F-
90=2 or 3).
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