American Dryer Corp. ADS-464 User Manual

Page 74

• Release the REVERSE Push-button

• Does PLC (Programmable Logic Controller) input L.E.D. #18 go “OFF”?

• If the answers to these questions are “YES,” wiring to the PLC is correct.

• If any answer to these questions is “NO,” refer to Probable Causes below

• Tumbler Forward Switch --- PB1

For quick check of the wiring of PB1 to the PLC (Programmable Logic Controller) perform the following
test with the control voltage “ON” (“GREEN” button).

• Press the FORWARD Push-button.

• Does PLC (Programmable Logic Controller) input L.E.D. #17 light?

• Release the REVERSE Push-button.

• Does PLC (Programmable Logic Controller) input L.E.D. #17 go “OFF”?

• If the answer to these questions are “YES,” wiring to the PLC (Programmable Logic

Controller) is correct.

• If the answer to these questions are “NO,” refer to Probable Causes below

a) PROBABLE CAUSES;

1. FUSE 4 ON MAIN ELECTRICAL PANEL

2. FAULTY SWITCHES

3. WIRING BACK TO PLC (Programmable Logic Controller)

b) POSSIBLE SOLUTIONS;

1. Check fuse blown indicator on fuse 4; replace fuse, if necessary and re-test.

2. Check switches using an OHM meter; replace if necessary, and re-test.

3. Refer to ADS-464 Pendant associated wiring diagrams for detailed assemblyand wiring information.

Check ALL circiuts back to PLC (Programmable Logic Controller).

• ADS-464 PENDANT ASSEMBLY DIAGRAM

• ADS-464 ANNUNCIATOR, PENDANT, and UPPER RTD’S (Resistive Temperature Device)

WIRING DIAGRAM

• EMERGENCY STOP (E-Stop) SWITCH --- PB6

If the “Emergency Stop” switch (pendant) does not respond: