OMC-131 True wind display
Users’ manual
V1.14
Page 7
TDC-April-2017
2.2.2 Power supply settings
The OMC-131 will be delivered with the power supply set as required by the customer. If no power
supply is mentioned in the official ordering papers the OMC-131 power supply will be set for 230
Vac.
If during installation is found that the supply setting is wrong two things can be done, the unit can
be returned to the factory for modification or the user will modify the unit himself.
To modify the display unit for a different power supply proceed as follows,
On the power supply board, the PCB with the terminal connection on the rear side, there is installed
a transformer. The transformer offers the possibility of 115 or 230 Vac. The supply depends on the
jumper settings between the filter transformer and the supply transformer. (See PCB layout) If the
wired marked "B" are installed the unit is set for 115 Vac, If the wire "A" is installed the unit is set for
230 Vac.
For 24 Vdc power supply the transformer TR1 has to be removed from the printed circuit board.
When the transformer has been removed two wire connection can be made (marked with "C")
