MCi iControl User Manual page 291

Table 6.3 iControl Messages
Brake Contactor Proofing Fault, BRAKE CONT PRF FAULT
Description: Fault signal for brake contactor proofing.
Car Reaction: None
Troubleshooting:
1. Verify brake contactor proofing circuits.
Brake Drop Fault, BRAKE DROP FAULT
Description: Indicates that the brake contact input (SP2D or Brake Switch) was not in the state required by
the "Brake is picked when SP2D or Brake Switch terminal is high (low)" parameter, indicating that the brake
was not fully dropped for more than one second after the car has stopped. This fault may be bypassed on the
Controller > Diagnostics > Fault Bypass tab by setting Brake Switch.
Car Reaction: Car is removed from service.
Troubleshooting:
1. On the Controller > Configuration > Brake > Control tab, check "Brake is picked when SP2D or Brake
Switch terminal is high (low)" to determine the proper state of terminal SP2D or Brake Switch when the
brake is dropped (see "Configuration - Brake Tab" on page
2. Verify proper operation of the brake and brake switch (open or closed, see step 1) when the brake is fully
dropped.
3. With the brake dropped, verify the state of input SP2D or Brake Switch (low or high, see step 1).
refer to "Installing Brake Monitoring" on page 3-20.
4. Use the iBox Fault Reset button to reset the fault.
Brake Enable Fault
Description: When the brake module is enabled, a feedback signal is generated for the iBox. If the feedback
signal is not detected, this fault is generated.
Car Reaction: Emergency stop: Motor and brake contactors immediately dropped.
Troubleshooting:
1. Check the Brake Voltage Feedback test point on the iView Oscilloscope screen.
2. Check the iField Brake Module connections.
3. Check the brake and brake connections.
4. If brake feedback voltage is actually present, the iBox Safety board may be defective.
Brake Module Over Temperature Fault, BRAKE OVER TEMP FAULT
Description: Temperature sensor in the brake module detected an overheat condition.
Car Reaction: If the car is running, it will continue to answer current call. After the car is stopped at a floor,
the car will not be allowed to run until the overheat condition clears.
Troubleshooting:
1. Check for excessive machine room ambient temperature. (Should not exceed 104 degrees F or 40C.)
2. Verify that air enters through the bottom of the power box and is only expelled via the fan at the top of
the power box.
3. Check the running temperature inside the power box (should not exceed 105 degrees F).
4. Check for insufficient air circulation through the power box.
5. Check for improperly picking brake.
6. Check for faulty brake module.
7. Check for faulty connection between brake module and iBox.
iControl Messages
9-24).
iControl Messages
Please
6-15
6