MCi iControl User Manual page 292

Troubleshooting
Table 6.3 iControl Messages
Brake Output Circuit Failure, BRAKE OUTPUT FAILURE
Description: The flywheel brake IGBT has failed or the fuse has opened.
Car Reaction: Normal stop.
Troubleshooting:
1. Verify proper operation of the brake module while running on machine room inspection:
• Does the brake pick voltage match the setting on the Configuration > Brake tab?
• Does the brake hold voltage match the setting on the Configuration > Brake tab?
2. Verify proper operation of the brake module while performing the Brake Calibration:
• Does the voltage max out and then slowly ramp down to about 10% of maximum supply voltage?
• Does the current max out and then slowly ramp down to about 10% of maximum supply current?
If the brake module is constantly outputting maximum voltage and current based on the testing in steps 1
and 2, the main IGBT on the module is most likely damaged. The module must be replaced.
CAUTION: An open or damaged RB resistor can cause the IGBT to fail. Check the resistor by removing the
center tap and measuring the value of the entire resistor. It is strongly recommended to do this before
installing another brake module.
Brake Pick Fault, BRAKE PICK 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 picked during one entire run or was late going low (or high) indicating a slow picking brake dur-
ing three consecutive runs. This fault may be bypassed on the Controller > Diagnostics > Fault Bypass tab
by setting Brake Switch.
Car Reaction: Car completes it's nearest run and 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 picked (see "Configuration - Brake Tab" on page
2. Verify proper operation of the brake and brake pick switch (open or closed, see step 1) when the brake is
fully picked.
3. With the brake picked, 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 Pick Fault Off (See: Brake Pick Fault)
Brake Voltage Not On Fault, BRAKE V NOT ON FAULT
Description: After brake contactors are picked and controller did not receive more than 30% of the picking
voltage after 1 second, this fault is generated. May be bypassed on the Diagnostics > Fault Bypass tab.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped. Fault will self
clear and car will attempt to run again.
Troubleshooting:
1. Verify Brake AC input voltage at FB1 and FB2.
2. Verify FB1 and FB2 fuses are good.
3. Verify J2 connector on right side of iBox is seated properly.
4. Verify brake output voltage with multimeter on terminals B1 and B2.
5. Recalibrate brake module if applicable.
Bus 2 Fuse Open, BUS 2 FUSE OPEN
Description: The bus 2 fuse is open.
Car Reaction: Emergency stop. Cancel demand and open doors. No further movement is allowed.
Troubleshooting: Check bus 2 fuse located at bottom of iBox.
Bus 2D Fuse Open, BUS 2D FUSE OPEN
Description: The bus 2D fuse is open.
Car Reaction: Emergency stop. Cancel demand and open doors. No further movement is allowed.
6-16 Manual # 42-02-2222
iControl Messages
9-24).
Please