Fine Tuning The Torqmax Drive; Up/Down High Speed Difference; Car Does Not Reach High Speed - MCi iControl User Manual

Fine Tuning the TORQMAX Drive

This section describes fine adjustments to the TORQMAX drive.

Up/Down High Speed Difference

1. Verify that Pattern Scaling is set to 100%.
2. If car speed, at high speed, is not the same in the up and down directions, verify the fol-
lowing:
• Drive gain parameters LF.31 and LF.32 are set properly. (If set too high, there may be
oscillation in the car.)
• Pattern voltage between (F4 terminals) X2-14 (Analog IN +) and X2-15 (Analog IN -)
or (F5 terminals) X2A-1 and X2A-2 on the TORQMAX drive equals -10.00 VDC in the
UP direction and + 10 VDC in the DOWN direction. If the UP/DN pattern voltage is
different, perform the adjustments described in Section 2.
Car Direction and Motor Control (TORQMAX)" on page
3. Use the Actual Speed indication or a hand held tachometer to verify car speed. The ele-
vator should now be running at or near contract speed in both up and down directions.
• If the elevator is running at a higher speed than parameter LF.20 Contract Speed,
decrease the value of parameter LF.42 High Speed.
If the elevator is running at a slower speed than parameter LF.20 Contract Speed, provided
LF.42 is set at the same value as LF.20, increase or decrease the value of LF.22 in small incre-
ments (0.10) to reach contract speed.

Car Does Not Reach High Speed

1. Verify that there is +10 VDC between (F4 terminals) X2-14 (Analog IN +) and X2-15
(Analog IN -) or (F5 terminals) X2A-1 and X2A-2 on the TORQMAX drive. If the voltage
is not correct, refer to Up/Down High Speed Difference above.
2. Verify that the following drive parameters are set correctly:
• LF.11 Rated Motor Speed (RPM)
• LF.20 Contract Speed (FPM)
• LF.21 Traction Sheave Diameter (inches)
• LF.22 Gear Reduction Ratio
• LF.23 Roping Ratio
• LF.42 High Speed (FPM)
Once tuning is complete, relearn the terminal switches. (Please refer to "Learning Normal &
Emergency Terminal Limit Switches" on page 4-9.) Then perform the Shaping the Speed Profile
procedure. (Please refer to "Shaping the Speed Profile" on page
Learning Normal & Emergency Terminal Limit Switches
(Please refer to "Verifying
2-55.)
4-12.)
4
4-11