User Manual - Rev AV AMETEK Programmable Power
MX Series 180
6.5.2 Current Limit Calibration
Note: This procedure only applies to MX Systems with top assembly P/N 7003-400-1
(Series I). If the MX system is P/N 7003-422, this section can be skipped. To check
the model top assembly part number, consult the model and serial tag on the rear
on the MX chassis.
Program the output to 135V, 60Hz on the low range. Program the current limit to IPROG in
Table 6-5 below, set limiting mode to Constant Current (CC).
Apply 105 to 110% of IPROG load to phase A output. Now adjust R195 on the system interface
board (P/N 7003-700-1) until the output current is 103% of IPROG (ISET).
When this adjustment is being made the front panel OVERLOAD indicator should be lit.
If system is 3-phase, then proceed to the phase B output and adjust R196 as above. For phase
C output adjust R197.
Table 6-5: Current Limit Calibration
Repeat this adjustment for the Phase B and Phase C if present.
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