6-78 Manual # 42-02-2223
Troubleshooting
Up Normal Terminal Switch ’n’ Level 2 Speed Fault, UP NTS’n’ L2 SPEED FLT (n = 1 to 5)
Description: Level 2 Overspeed fault detected at Up Normal Terminal switch 'n' (1 to 5). Car traveling faster
than defined Level 2 overspeed settings (105% of sum of learned speed plus Overspeed 1 Margin percentage
on Configuration >Terminal Switches tab). Fault may be bypassed on Diagnostics >Fault Bypass tab.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. Check Diagnostics > Terminal Switches Status tab to see how fast car was traveling on Last pass by
switch. Check against Learned speed for switch. If appropriate, increase Overspeed 1 Margin on Config-
uration > Terminal Switches tab.
2. May be caused by change in Pattern parameters. Re-learn terminal switches after changes to Pattern.
3. One or two floor runs may come in “hotter” than multi-floor runs. (Switches learned making full hatch
runs.) If short runs cause this, increase Overspeed 1 Margin or lower Standard profile - High Roll Jerk.
4. Can be caused by car following pattern poorly due to heavy load or poor speed loop performance. Adjust
speed loop to follow pattern as well as possible and/or alter pattern parameters to produce gentler decel-
eration and approach (re-learn switches). Please refer to “Terminal Switch Overspeed and Position
Faults” on page 4-54.
Up Normal Terminal Switch ’n’ Position Fault, UP NTS’n’ POSITION FLT (n = 1 to 6)
Description: When switch opened or closed, car reported position different from learned position by value
exceeding margin set on Configuration > Terminal Switches tab. May mean switch opened early, late or not
at all on approach to terminal. May also mean switch closed early, late, or not at all on departure from termi-
nal. Finally, switch can go open while standing at a floor where learned position is closed, or go closed at a
floor where learned position is open. Fault may be bypassed on the Diagnostics > Fault Bypass tab.
Car Reaction: Traveling up, car executes emergency slowdown, continues at low speed until it encounters a
floor. Car stops at floor, opens doors, and performs floor sync operation. If fault persists, car goes out of ser-
vice. Traveling down, car continues to first stop, opens doors and performs floor sync operation. If fault per-
sists, car goes out of service. If stopped at a floor, car opens doors, does floor sync, and, if fault persists,
goes out of service.
Troubleshooting:
1. Diagnostics >Terminal Switches Status tab, compare Last pass position to Learned position for switch.
2. If fault is mechanical (switch movement, magnet movement), fault will tend to repeat at same position.
3. A stuck switch is easy to spot by running 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).
User code accessing an invalid logical indicator (internal event)
User Event ‘n’ Off (n = 1- 10) (see User Defined Event ‘n’ On)
User Event ‘n’ On (n = 1 - 10), User Defined Event Fault, USER DEF EVENT FAULT
Description: Indicates that User Event ‘x’ (1 - 10) has been activated via User Input ‘n’ (1 - 10)
Car Reaction: Determined by user programming (Configuration > User Inputs tab)
Troubleshooting: Determined by user programming (Configuration > User Inputs tab)
Vector Checksum Fault (see Safety Inventory Checksum Fault)
Vector Comparison Fault (see Safety Inventory Comparison Fault)
Vector Creation Fault (see Safety Inventory Creation Fault)
Vector Learn Fault (see Safety Inventory Learn Fault)
Watchdog Ordered Control Stop Before Reset
Description: A critical component in the system has locked up.
Car Reaction: The car will come to a controlled stop and the system will reboot automatically.
Watchdog Ordered Emergency Stop Before Reset
Description: A critical component in the system has locked up.
Car Reaction: The car will perform an emergency stop and the system will reboot automatically.
Table 6.3 iControl Messages
iControl Messages
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