Instruction Manual

Smart DC Controller Troubleshooting
Revision E Reference 6-17
Table 6-1. Smart DC Controller - Troubleshooting
Display Description
Possible Causes Solutions
Condition Alert, Error or Fault
SAFE MODE Safe Mode Alert Occurs when either the edge sensor or Inherent sensor has
been tripped. In Safe Mode, the automatic close timer is disabled, but any command will reset and/or start the gate in motion. Safe Mode clears when full travel is reached or the RESET button is pressed. Gate Binding, wind, a faulty edge sensor, or worn motor brushes can cause a false alert.
1. Remove the obstruction. 2. Adjust the IES sensitivity. 3. Correct the gate hardware. 4. Correct faulty edge sensor. 5. Check for worn motor brushes and replace, if necessary.
ENTRAPMENT MODE Entrapment Mode Alert Occurs when the Inherent sensor is tripped when the gate is
already in Safe Mode. The operator will not function until it is reset, which can occur by: - An Open or Stop command from a push-button control - Pressing the red button on the side of the operator - Pressing the RESET button below the display With any one of these inputs, the operator will return to Safe Mode. Gate Binding or wind can cause a false alert.
1. Remove the obstruction. 2. Adjust the IES sensitivity. 3. Correct the gate hardware.
NO AC POWER No AC Input Power
Advisory only.
AC power is shut off at the source (breaker) or is not connected. The AC power switch on the operator (lower rocker switch) is turned off, or the circuit breaker on the operator has tripped.
1. Turn AC power switch on or connect power to the operator. 2. Reset the operator circuit breaker or connect power to AC switch. 3. Reset circuit breaker at electrical panel. 4. Have a licensed electrician check the wiring.
LOW 24VDC Low 24VDC UPS Batteries
Advisory only.
Occurs when the battery voltage has dropped to less than 22 Volts. At this level, the batteries are 80% depleted. Normal function until 21Volts.
1. No AC Power. See above item. 2. Wiring / Connector problem - check all connections. Clean or repair as required. 3. Check battery condition. 4. Smart DC Controller charger failure - check charger voltage and replace Smart DC Controller. 5. Transformer failure - replace Transformer.