4-49 890CS & 890CD Common Bus Units   
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D 
890CS Common Bus Supply - Voltage Check 
IMPORTANT  You MUST check that the selected voltage of the unit is the same as the 3-phase supply voltage.  
The keypad will display the selected voltage of the unit.  
If the voltage is incorrect: remove the 24V, select the required voltage at S1 on the front panel and apply 
24V again. Re-check.. 
The correct voltage setting ensures that suitable voltage levels are used for Overvoltage, Undervoltage and 
Brake Level detection. 
 
To display the Input Voltage Rating: 
 
Press and hold 
 
to display the software version. 
Now press 
 or   to view the Input Voltage Rating. 
Allow the display to time-out or press 
 
to return to the previous screen. 
The Welcome Screen displays the input voltage rating at power-up for a short time. 
Otherwise, press 
 
repeatedly until the Welcome Screen is displayed. 
Allow the display to time-out or press 
to return to the previous screen.