MCi iControl User Manual page 301

Table 6.3 iControl Messages
Down Emergency Terminal Switch Position Fault, DN ETS POSITION FAULT
Description: The reported position upon encountering the Terminal Switch differed from the learned switch
position by more than the set position margin. This fault may be bypassed on the Diagnostics > Fault Bypass
tab.
Car Reaction: Emergency Stop: Motor contactor and brake contactor immediately dropped. All hall and car
calls are cancelled. After the car is stopped, it will run at Correction speed to the next available floor and
cycle the door. Door Open button will remain operational. If fault generated when car is moving, fault will
stay latched and the Fault Reset button must be pushed to clear it. If generated when the car is not moving,
fault will self clear when condition no longer exists.
Troubleshooting:
1. Physically check the integrity of the switch and wiring.
2. Check the iBox input for the switch.
3. On the Diagnostics > Terminal Switches Status tab, compare the last pass position against the learned
position for this switch. Verify that Position Margin is within a reasonable range. Relearn the NTS and ETS
switches. Please refer to "Learning Normal & Emergency Terminal Limit Switches" on page
Down Emergency Terminal Switch Shutdown, DOWN ETS SHUTDOWN
Description: The Down Emergency Terminal switch opened at a speed or position exceeding its specified
threshold. The fault stays latched and the Fault Reset button must be pushed to clear it. If generated when
the car is stopped, the fault will self clear when the condition no longer exists.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. This fault is logged in conjunction with either a speed or position fault at DETS. Check the Event Log and
follow the troubleshooting recommended for the Down Emergency Terminal Switch Position Fault or
Safety A (or B) DETS Level 2 Speed Fault.
2. Press iBox Fault Reset to reset the fault.
Down Normal Terminal 'n' Level 1 Speed Fault, DN NTS'n' L1 SPEED FLT (n = 1 to 5)
Description: A Level 1 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 1 overspeed settings (sum of learned
speed plus Overspeed 1 Margin percentage on Configuration > Terminal Switches tab) but not fast enough to
trigger the Level 2 overspeed fault. This fault may be bypassed on the Diagnostics > Fault Bypass tab.
Car Reaction: Controlled stop using Emergency Slowdown pattern parameters.
Troubleshooting:
1. On the Diagnostics > Terminal Switches Status tab, compare the last pass and the Learned 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
iControl Messages
iControl Messages
4-9.
4-55.
6-25
6