User Manual – Rev BE AMETEK Programmable Power
MX Series 228
MULTI CHASSIS SYSTEMS
If the power system to be adjusted is an MX60, MX90 or an MX135, the
procedure involves matching the output voltage of the A, B and C power
modules in the master cabinet to the A, B and C power modules in the auxiliary
cabinet(s). Proceed as follows:
1) Verify the controller is indeed set for 3-phase operation (MX60,
MX90 or MX135).
2) Shut off all power to the cabinets. Disconnect the two wires
going to Terminal 6 and Terminal 7 on the lower front of the
power modules. Do this to module A, B and C in the auxiliary
cabinet(s) only. Place some temporary insulation over the lug
ends.
3) Connect a DMM between terminals 6 and 7 on the A module in
the master cabinet. Power up the cabinet. Set the controller
to the 300V range, program 230V at 60Hz. Enable the output
by pressing the OUTPUT ON/OFF key. Measure the A module
output voltage and write it down. Press the OUTPUT ON/OFF
key to disable the output.
4) Move DMM leads to the B module terminals 6 and 7. Press the
OUTPUT ON/OFF key to enable the output. Measure the B
module output and write it down, Press the OUTPUT ON/OFF
key to disable the output.
5) Move DMM leads to the C module terminals 6 and 7. Press the
OUTPUT ON/OFF key to enable the output. Measure the C
module output and write it down, Press the OUTPUT ON/OFF
key to disable the output.
6) Move the DMM leads to the A module terminals 6 and 7 in the
auxiliary cabinet. Press the OUTPUT ON/OFF key again to
enable the output. Verify the phase A module output is within
50mVolts of the A module in the master cabinet. If it is not,
adjust the pot behind the hole in the upper left corner of the
module so the A output matches the A master output within
50mVolts. Press the OUTPUT ON/OFF key to disable the
output.
7) Move the DMM leads to the B module terminals 6 and 7 in the
auxiliary cabinet. Press the OUTPUT ON/OFF key again to
enable the output. Verify the phase B module output is within
50mVolts of the B module in the master cabinet. If it is not,
adjust the pot behind the hole in the upper left corner of the
module so the B output matches the B master output within
50mVolts. Press the OUTPUT ON/OFF key to disable the
output.
8) Move the DMM leads to the C module terminals 6 and 7 in the
auxiliary cabinet. Press the OUTPUT ON/OFF key again to
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