PSU Series User Manual 
146 
Connection- alt. 
shielding 
If the wire shield needs to be grounded at the 
voltage source (EXT-V), then it can be connected as 
shown below. 
PSUEXT-V
Isolated 
Voltage 
Option
+
-
4
2
Output 
Terminal
2 core shielded 
wire or twisted 
pair
 
  Pin4(GND_ISO) → EXT-V (-) 
  Pin2(+VPROG_ISO) → EXT-V (+) 
  EXT-V ground (GND) → Wire shield  
1.  Connect the external voltage according to the 
connection diagrams above. 
2.  Set the F-90 power on 
configuration setting to 4 (Control 
by Isolated Board). 
3.  Set the F-97 power on 
configuration setting to 0 (0~5V 
control range) or to 1 (0~10V 
control range). 
  Be sure to cycle the power after the power on 
configuration has been set.  
4.  Press the Function key and confirm 
the new configuration settings  
(F-90=4, F-97=0 or 1).