9
2.2
Making the AC Input Connections
AC input configuration is done at the factory prior to delivery once a customer’s AC main has been verified. The
available inputs are listed in the table below.
The process has been simplified using the AC filter board which is mounted inside of the MXHF. Simply remove
the top cover to access the AC filter board, it includes mounting posts for bus bar selection and headers for
auxiliary power supply voltage selection. Follow three easy steps to verify or configure proper AC input for the
MXHF.
2.2.1 Bus Bar Selection
Configuring the Bus Bars on the AC filter board negates the need to rewire the AC inputs to the power modules.
Use an 8mm socket on the M5 hex head bolts to secure the Bus Bars in place. Unused Bus Bar connectors are
bolted to the internal rear of the MXHF cabinet.
AC Input Voltage
Bus Bar Selection
208-240 Single Phase
J14-J15-J16
J17-J18-J19-J20
208-240 Three Phase
J14-J18
J15-J19
J16-J20
480V Three Phase
J17-J18-J19-J20
Figure 3 – AC Filter Board
Mounting posts for Bus
Bar Selection (Step 1)
Headers for auxiliary power
supply voltage selection (Step 2)
