MCi iControl User Manual page 329

Table 6.3 iControl Messages
Light Load Antinuisance
Description: Light load anti-nuisance operation. The load in the car is less than the programmed Light Load
Threshold value.
Car Reaction: Under these conditions, an anti-nuisance feature (if enabled) will limit the number of car calls
registered. Should the number of registered car calls exceed the programmed limit, all car calls will be can-
celed.
Troubleshooting:
1. If this message appears to be displayed in error, verify the programmed "Light Load Threshold" value.
(Adjust if needed on the Load Weigher Configuration screen.)
2. Verify the user-defined number of car calls allowed if the car load is less than the Light Load Threshold.
Please refer to "Car Operation - Passenger Tab" on page 9-37.
3. Evaluate whether or not the load in the car is less than the Light Load Threshold value. Calibrate the load
weigher if necessary.
4. For discrete input load weighers, check the Light Load input shown on the job prints.
Limit Switches Checksum Fault, LIMIT SW CHKSUM FAULT
Description: The learned ETS and NTS limit switch speed values have an Invalid Checksum in nonvolatile
memory. A checksum is a means of validating data that has been stored in nonvolatile memory. An invalid
checksum means that the data stored may not be reliable.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. Relearn the Hoistway limit switches.
2. Use the Default option on the Terminal Switch learning screen.
Limit Switches Learn Fault, LIMIT SW LEARN FAULT
Description: Safety Processor A experienced a failure when storing learned limit switch speed values to non-
volatile memory.
Car Reaction: Emergency stop: Motor contactor and brake contactor immediately dropped.
Troubleshooting:
1. Press the Fault Reset button to clear the fault.
2. If problem persists, consult MCE Technical Support.
Load calibration on, LOAD CALIBRATION ON
Description: Load learn calibration has been initiated.
Car Reaction: Car will start load learn process.
Load learn process activated. See Load Calibration On.
Load learn process deactivated
Lobby Peak Mode, LOBBY PEAK MODE
Description: The elevator is operating in lobby peak mode, favoring traffic coming from the lobby.
Loss of Position or Speed Indicators, LOSS OF POS/SPD IND
Description: The speed feedback signal used to compare with the position feedback signal is not being seen
properly or is not properly calibrated. This can be caused by a loss of traction.
Car Reaction: Emergency Stop. Latched fault.
Troubleshooting:
1. On the iView oscilloscope (or a DVM connected between STP1 and STP2), compare Pattern Command
and Speed Feedback readouts. They must match within 0.050 VDC while the car is running at steady
state speed. If not, adjust the TACH ADJ trimpot.
Speed Feedback" on page
2. Use a hand-held tachometer to verify car speed. If the actual speed does not match commanded speed,
adjust motor parameter LF.22.
3. Run the car on inspection and check the speed displayed on the iBox display.
iControl Messages
Please refer to "Verify Pattern Command and Drive
2-56.
Please refer to "Calibrating Actual Car Speed" on page
iControl Messages
2-57.
6-53
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