KEB COMBIVERT F5 Reference Manual page 293

Unintended Movement
The Unintended Movement event occurs when the difference between the motor position during
idle after a normal run, changes by more than the value set in parameter LX25 Unintended Motion
Distance. The event is logged and requires a forced reset.
A normal run is considered any run profile that is not inspection. An Unintended Movement event
will not occur after an inspection run.
• For US04 Control Type = Binary Speed (1), Digital Speed (0) Selection, or Serial Binary Speed
DIN66019 Serv. 50 (6), the speed signaled for inspection speed must match the corresponding
inspection speed according to the LI03 Speed Input Decoding.
• For US04 Control Type = Serial or Analog, a run is considered an inspection run when the
digital input (LI04-11) programmed as Inspection Speed (32) is on for the length of the entire run.
After a normal run, the motor position is determined after the Brake Control output conditions have
set and the Enable input has been dropped. During idle until the next normal run, the motor position
is compared against the level set in LX25 before an Unintended Movement event occurs. The level
of comparison can be adjusted and the function can be turned off in Special Functions, LX21. The
Elevator Position can be monitored in Diagnostics Screen #10 or DG04. Since the motor position is
determined from the motor encoder, movement of the elevator car itself from rope stretch, etc., would
not cause an Unintended Movement event.
Once an Unintended Movement event has occurred, a forced reset is required by simultaneously
pressing the F1 and F4 hotkeys on the keypad operator. The event cannot be cleared by signaling
the reset on the drive or cycling power.
If the cause of unintended movement is from the drive enable being dropped, then a Drive Enable
Dropped event will occur instead of Unintended Movement.
The Unintended Movement Function can be turned off with LX21 Unintended
i
Movement = OFF.
No Visible Change When Adjusting LM07
If no visible change is seen when adjusting LM07 (motor torque), use the NUM function to change
the number.
1. Go to the parameter to be changed.
2. Press Enter to enter Edit mode.
3. Press F4 for NUM.
4. Change the number using the arrow and function keys (F2 = change digit left; F3 = add decimal;
F4 change digit right)
5. Press Enter to save values.
6. Press Escape to go back to parameter list.
Diagnostics and Troubleshooting
293