Instruction Manual

Smart DC Controller Troubleshooting
Revision E Reference 6-19
ALERT 5 BOTH LIM ACTIVE
Both limit switches are on at the same time.
1. Stuck limit switch. 2. Short in wiring. 3. Debris in limit plate area.
1. Check limit switches and replace as required. 2. Check limit switch wiring, correct as required. 3. Remove debris from limit area.
ALERT 6 LIM NOT RELEASED
The limit did not release when the operator was commanded to move.
1. Taper clamp loose. 2. Broken drive belt. 3. Stuck Limit Switch. 4. Broken Limit Plate. 5. Debris in limit plate area.
1. Tighten Taper Clamp. 2. Check and replace drive belt. 3. Check limit switches and replace as required. 4. Check Limit Plate and replace as required. 5. Remove debris from limit area.
ALERT 7 FREQ SHIFT FAULT
The HY-5A has detected a frequency change outside the normal range.
Likely causes are poor integrity of loops or metallic objects within range. This message will also indicate which detector the alert applies to: Exit Loop (ELD), Inside Obstruction Loop (IOLD), Outside Obstruction Loop (OOLD), or Center Loop (CLD).
The loop lead in wires and roadway should be checked for problems or replaced.
ALERT 8 LOOP SHORTED
The HY-5A has detected a loop shorted to ground.
Caused by inadequate insulation of loop wires. The loop lead in wires and roadway should be
checked for problems or replaced.
ALERT 9 LOOP OPEN
The HY-5A has detected a lack of continuity in the loop wire.
Caused by broken loop wire or wire has come unplugged from detector.
The loop and lead in wires should be checked for problems or replaced.
ALERT 10 12C BUS ERROR
The Smart DC Controller has detected a communication error with a HY-5A vehicle detector.
Caused by removal of HY-5A or lack of integrity of the socket connection. This message will also indicate which detector the alert applies to: Exit Loop (ELD), Inside Obstruction Loop (IOLD), Outside Obstruction Loop (OOLD), or Center Loop (CLD).
Remove and re-install the HY-5A and press RESET. Replace the HY-5A, if necessary.
ALERT 11 DETECTOR FAULT
The Smart DC Controller has detected a problem within an HY-5A vehicle detector.
Caused by a fault within the HY-5A. This message will also indicate which detector the alert applies to: Exit Loop (ELD), Inside Obstruction Loop (IOLD), Outside Obstruction Loop (OOLD), or Center Loop (CLD).
Remove and re-install the HY-5A and press RESET. Replace the HY-5A, if necessary.
ALERT 12 ON TOO LONG
The Smart DC Controller has an active loop input (HY-5A or box detector output) for more than 5 minutes.
Caused when the Smart DC Controller sees an active loop for more than 5 minutes. The “active” loop can be actual or false. This message will also indicate which detector the alert applies to: Exit Loop (ELD), Inside Obstruction Loop (IOLD), Outside Obstruction Loop (OOLD), or Center Loop (CLD).
Check traffic patterns at the site. The loop and lead in wires should be checked for problems or replaced.
Table 6-1. Smart DC Controller - Troubleshooting
Display Description
Possible Causes Solutions
Condition Alert, Error or Fault