Checking, Maintenance; Checking; Maintenance - M-system M3-UNIT Series Operating Manual

11. CHECKING, MAINTENANCE

11.1 CHECKING

(1) Terminal wiring: Check that all cables are correctly connected according to the connection diagram.
(2) DIP SW setting: Check that the switches are set to appropriate positions.
(3) Power input voltage: Check voltage across the terminal 11 – 12 with a multimeter.
(4) Input: Check that the input signal is within 0 – 100% of full-scale.
(5) Output: Check that the load resistance meets the described specifications.

11.2 MAINTENANCE

Perform the periodic calibration as stated below.
■ CALIBRATION
Warm up the unit for 10 minutes or more, apply 0, 25, 50, 75 and 100% input to the unit, and make sure that the output
is 0, 25, 50, 75 and 100% respectively within the prescribed accuracy. In case the output is deviated from the accuracy,
perform the fine zero/span adjustment.
M3LDY OPERATING MANUAL EM-2664-B Rev.0 34