Page 77 of 102
TVL 351
ISSUE 15
Rotation Check
Motor direction can usually be changed by swapping motor phases. Exception: - For RFC-S Permanent Magnet
Type, the direction of rotation cannot be reversed by swapping motor phases. The reversal of direction is achieved
by changing a parameter in Ethos Two.
Connect PR to CTD, or instruct the controller to run using the Panel Test Pushes, and ensure that the motor rotates
in the down direction, or alternatively, the direction can be changed in the Ethos Two:
Press: Checklist → Jog Up/Down → Drive Forward = Up.
This parameter can be changed to OFF = DN
Motor Encoder Used For Positioning
When an Ethos Two has no Limax or Governor Encoder and an encoder is fitted to the lift motor, the E300 drive can
output a simulated set of encoder signals for use by the Ethos Two for shaft positioning.
The E300 drive parameters are configured:
#C01 = Drive encoder type = Site specific (e.g. SCEndat, AB)
#C03 = Drive encoder rotary pulses per revolution = Site specific (e.g. 1024, 2048, 4096)
#C28 = Encoder simulation source = J53 (Drive encoder position)
#C31 = Encoder simulation mode = Hardware
With #C28 & #C31 set up as above, the simulated encoder outputs to the Ethos Two will have the same PPR as the
motor encoder input #C03, therefore, the Ethos Two “Pri Encoder PPR” needs to be set to the value in #C03.
The Ethos Two “Motor Speed” needs to be set the same as drive parameter #E07 (Nominal Elevator Speed RPM).
Note: Any changes made to Ethos 2 “Motor speed” will require a new shaft learn to be completed.
Pre Shaft Learn Checks
Check system is counterweighted correctly.
Using the Profile Screen, confirm the lift moves at the correct speed on inspection control.
Then run the car empty and fully loaded. Should any instability be felt within the drive, please contact TVC Customer
Support Dept. for further advice.
Follow the General Installation Guidelines from this point.
E300 Drive / Ride Quality Troubleshooting
The table below lists some common problems seen and corrective action to take:
Possible Cause & Corrective Action
Motor snatching
away on start
Motor Driving Through Brake
a) Check Brake is wired correctly and it’s getting the correct voltage.
b) Increase Pattern Delay Ethos settings.
c) Increase #D04 E300 Drive.
Rollback during
start
E300 Drive Settings
a) Check #I22 (Start Lock Enable) is enabled.
b) Increase #I20 (Start Lock P Gain).
c) Adjustment to the Start Speed Loop Gains #I01 & #I02 will help with the
control at start, however too high a value will result in instability and acoustic
noise.
Motor emitting
acoustic noise
E300 Drive Settings
a) Current Loop Filters #I05 & #I10 Recommended value 1ms to 4ms.
b) Encoder Filter #C09 Recommended value 1ms to 2ms.
c) Reduce Current Loop P Gains
&
by 10%.
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