MCi iControl User Manual page 302

Troubleshooting
Table 6.3 iControl Messages
Down Normal Terminal 'n' Level 2 Speed Fault, DN NTS'n' L2 SPEED FLT (n = 1 to 5)
Description: A Level 2 Overspeed fault has been detected at Down Normal Terminal switch 'n' (1 to 5). When
the switch opened, the car was traveling faster than defined by Level 2 overspeed settings (105% of the sum
of the learned speed plus the Overspeed 1 Margin percentage setting on the Configuration > Terminal
Switches tab). This fault may be bypassed on the Diagnostics > Fault Bypass tab.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. On the Diagnostics > Terminal Switches Status tab, compare the Last pass and Learn speeds for this
switch. If appropriate, increase the Overspeed 1 Margin on the Configuration > Terminal Switches tab.
2. May be caused by a change in the Pattern parameters. Always re-learn the terminal switches after any
changes to Pattern parameters.
3. One or two floor runs can sometimes come in "hotter" than multi-floor runs. (Remember that the
switches are learned making full hatch runs.) If short runs are causing this, you may have to increase
the Overspeed 1 Margin or lower the Standard profile - High Roll Jerk parameter.
4. Can also be caused by a car that is following the pattern poorly, possibly due to heavy load or poor speed
loop performance. In this case, adjust the speed loop to follow pattern as well as possible and/or alter
the pattern parameters to produce a gentler deceleration and approach to the floor (then re-learn the
switches). Please refer to "Terminal Switch Overspeed and Position Faults" on page 4-55.
Down Normal Terminal 'n' Position Fault, DN NTS'n' POSITION FLT (n = 1 to 5)
Description: When the switch opened or closed, the car's reported position was different from the learned
position by an amount exceeding the margin set on the Configuration > Terminal Switches tab. This may
mean that the switch opened early, late or not at all on approach to the terminal. It may also mean that the
switch closed early, late, or not at all on departure from the terminal. Finally, the switch can go open while
standing at a floor where its learned position is closed, or go closed at a floor where its learned position is
open. This fault may be bypassed on the Diagnostics > Fault Bypass tab.
Car Reaction: If traveling down, the car executes an emergency slowdown, then continues at low speed until
it encounters a floor. The car stops at the floor, opens its doors, and performs a floor sync operation. If the
fault persists, the car goes out of service. If traveling up, the car continues normally to the first stop, opens
its doors and performs a floor sync operation. If the fault persists, the car goes out of service. If stopped at
a floor, the car opens its doors, does a floor sync, and, if the fault persists, takes itself out of service.
Troubleshooting:
1. On the Diagnostics > Terminal Switches Status tab, compare the Last pass position to the Learned posi-
tion for this switch.
2. If the fault is mechanical (switch movement, magnet movement, or bad traveler cable), the fault will
tend to repeat at the same position every time.
3. A stuck switch is easy to spot by running the car on inspection and observing the input LEDs on the iBox.
4. Perform a Terminal Sync operation (Terminal button on the Configuration > Pattern > Common tab).
Drive At-Speed Fault, DRIVE AT-SPEED FAULT
Description: Detected by the drive, this fault indicates that the motor speed is outside threshold limits
defined by the drive parameter. (This fault is not monitored for the TORQMAX F5 drive).
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. If the job has a TORQMAX F5 drive and this fault occurs, verify that wires AT and GND (from iBox J46)
are connected to drive terminal X2A-26 (Common).
Drive Communication Fault, DRIVE COMM FAULT
Description: A fault is generated if a serial drive interface is selected (Controller > Configuration > Drive tab)
and either the serial port cannot be opened or there is a communication problem with the drive.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Drive Communication Warning, DRIVE COMM WARNING
Description: Not currently used.
6-26 Manual # 42-02-2222
iControl Messages