Alpha Technologies VMX Series - Manual (Page 26)

26 017-940-B0-001, Rev. A
4.0 Confi guration
4.1 Micro Board Setup
The Micro Board comes factory set, but the Micro Board switches are accessible should a
confi guration change be necessary. Setup details are included in this manual as an aid to
troubleshooting, and as a reference to verify confi guration. Only qualifi ed technicians should
perform reconfi guration. To access the Micro Board, remove the eight front panel Phillips
screws indicated.
Input Voltage (SW1-1): Factory set to order. Never change this setting.
Frequency (SW1-2): Factory set to match the ferroresonant transformer operating frequency
of either 60Hz or 50Hz. This setting should never be changed.
Output Current Rating (SW1-3 and SW1-4): Factory set. Output Current Rating is set to
match the model of the power supply. Never change this setting.
Fig. 4-1, Micro Board DIP Switch Settings
Dip Switch Location
Back of front panel
Factory set. Do not change settings.
OFF ON
Vin, SW1-1 225V 115V
Freq, SW1-2 60Hz 50Hz
Iout 15A 22A NA NA
SW1-3 OFF ON OFF ON
SW1-4 OFF ON ON OFF