Watlow MLS User Manual

Page 41

Installation

MLS User’s Guide 29

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Turn the power back on. The Processor Module's display should light

up, and after about a second the Bar Graph display should appear,
followed by the message "AIM COMM FAIL".

5. Connect the Common lead of the voltmeter to TB3 and the power

lead of the voltmeter to the AIM-TB terminal labeled "+5V". The
voltage on the "+5V" terminal should be between +4.75 and +5.25
Vdc.

6. If the voltages are within the limits described above:

A. Turn off the power.

B. Carefully insert the AIM cards back into the AIM Terminal

Block.

C. If you have unplugged the AIM COMM. cable, plug it back in.

D. Press and hold the No key. While pressing it, turn the power

back on. (This procedure is known as a manual controller reset
or No Key reset.)
The green LEDs on the AIM should blink, which means that the
unit is working normally. If they do not blink, contact Watlow-
Anafaze.

E. The MLS-PM will display a "T/C Break" alarm message for

each channel. These messages are normal; to clear them, press
Alarm Ack once for each control loop.