Troubleshooting
6-28 Manual # 42-02-7223 C1
Down Emergency Terminal Switch Shutdown, DOWN ETS SHUTDOWN
Description: Down Emergency Terminal switch opened at a speed or position exceeding its specified thresh-
old. Fault stays latched and Fault Reset button must be pushed to clear. If generated when car is stopped,
fault will self clear when the condition no longer exists.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Tro ubleshooting:
1. Fault is logged in conjunction with either a speed or position fault at DETS. Check Event Log and follow
troubleshooting for Down Emergency Terminal Switch Position Fault or Safety A (or B) DETS Level 2
Speed Fault.
2. Press iBox Fault Reset to reset 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
switch opened, 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 trig-
ger Level 2 overspeed fault. This fault may be bypassed on the Diagnostics > Fault Bypass tab.
Car Reaction: Controlled stop using Emergency Slowdown pattern parameters.
Tro ubleshooting:
1. On Diagnostics > Terminal Switches Status tab, compare last pass and Learned speeds for switch. If
appropriate, increase Overspeed 1 Margin on Configuration > Terminal Switches tab.
2. May be caused by a change in Pattern parameters. Always re-learn 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 switches
are learned making full hatch runs.) If short runs are causing this, you may have to increase Overspeed
1 Margin or lower Standard profile - High Roll Jerk parameter.
4. Can also be caused by a car that is following pattern poorly, possibly due to heavy load or poor speed
loop performance. In this case, adjust speed loop to follow pattern as well as possible and/or alter pat-
tern parameters to produce a gentler deceleration and approach to floor (then re-learn switches). Please
refer to “Terminal Switch Overspeed and Position Faults” on page 4-61.
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.
Tro ubleshooting:
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 4-61.
Table 6.3 iControl Messages
iControl Messages
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