Troubleshooting
6-28 Manual # 42-02-7223
Dual Channel QUAD Fault, DUAL CHANNEL QUAD FLT
Description: The Safety system did not detect movement of the car even though the iBox processor reported
car movement, or the Safety system reported car movement while the processor did not.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. Press the Fault Reset button.
2. Check the wiring for the DP1 and DP2 encoder signals from the landing system to the iBox.
3. Check the motor encoder or tachometer (whichever is present).
4. Compare Pattern Command and Speed Feedback on the iView oscilloscope screen to make certain they
track one another.
5. Check reported speed accuracy using a hand-held tachometer.
Earthquake board power supply OFF
Description: The controller has detected a failure of the earthquake board power supply.
Car Reaction: The car behaves as if the counterweight derailment detector has been triggered (car generally
makes an emergency stop, and is removed from service at the next available landing).
Troubleshooting:
1. Check board connections.
2. Replace the EQ board.
Earthquake board power supply ON
Description: The earthquake board (ICE-EQ) power supply is operational.
Car Reaction: Car is no longer prevented from operating due to a loss of the earthquake board power supply.
Earthquake Emergency Stop
Description: Earthquake operation has been activated by the seismic or counterweight displacement
switches and the car has performed an emergency stop as specified by the earthquake user settings.
Car Reaction: The car will perform an emergency stop. After a pause, the car will react as directed by user
settings on the Car Operation screen Earthquake tab.
Troubleshooting:
1. Check the wiring for the seismic and counterweight displacement inputs.
2. Check the earthquake user settings on the Car Operation screen Earthquake tab.
Earthquake Operation Activated
Description: The car is on earthquake operation.
Car Reaction: Car behavior is according to the user settings on the Car Operation screen Earthquake tab.
This operation is latched until the EQ reset button is pressed on the ICE-EQ board.
Troubleshooting: NA. See also “Earthquake Operation (Seismic Switch)” and “Earthquake Operation (Coun-
terweight)”.
Earthquake Operation Deactivated
Earthquake Operation (Counterweight)
Description: The Counterweight Derailment Detector has been activated, indicating an earthquake condition.
Car Reaction: The car will typically make an emergency stop, then move slowly to the next available floor in
a direction away from the counterweight. The fault is latched until the EQ reset button (ICE-EQ board) is
pressed.
Troubleshooting:
1. If it is suspected that this event happened in error, check the counterweight derailment detector opera-
tion and associated wiring to the ICE-EQ board.
Table 6.3 iControl Messages
iControl Messages
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