Watlow CLS - Manual (Page 34)

26 CLS User’s Guide
Installation
Connections Test
Again, follow these instructions if you have purchased your own power
supply, or if you are using a Watlow Anafaze power supply, you don’t
need to perform this test.
1. Unscrew the two screws on the sides of the CLS front panel.
2. Gently slide the electronics assembly out of the case. You have now
removed the parts of the CLS which will be damaged by excess
voltage, so plug in the transformer power supply and use a voltme-
ter to check voltages:
3. Touch the meter Common lead to the back Terminal Block 2 (TB2)
terminal 2 on the CLS. The voltage on TB2 terminal 1 should then
be +12 to 24 Vdc.
4. If the voltages are within the limits described above,
a. Turn off power.
b. Slide the electronics assembly back into the processor mod-
ule’s casing.
c. Reinsert screws into the screw holes on the casing and lighten
them.
d. Turn the power back on. The CLS display should light up, and
after about a second the Bar Graph display should appear.
If you have not connected analog inputs yet, the CLS may dis-
play a “T/C Break” alarm message for each channel. This is
normal; to clear the alarm messages, press ALARM ACK
once for each alarm message.