Control Of The Motor Potentiometer - Lenze 4800 Manual

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Configuration
7.5.3.1
7-74
48XX/49XXSHB0399
If the motor potentiometer acts on the main set-value C046, QSP, the ramp
function generator of the main set-value, JOG enable and CW/CCW changeover
have priority.

Control of the motor potentiometer

- If the terminal signal "acceleration" is active, the ramp function generator
(RFG) accelerates to its upper limit value (C260).
- If the terminal signal "deceleration" is active, the RFG decelerates to its
lower limit value (C261).
- The existing RFG content remains the same as long as none of the signals
is active.
1
1
Acceleration
Deceleration
FIG 7-31 Signal flow at the motor potentiometer output
¥
Acceleration ramp depends on acceleration time C262
¦
Deceleration ramp depends on deceleration time C263
In addition to the two input terminals "acceleration" and "deceleration" there is
another terminal which enables the activation and deactivation of the motor
potentiometer.
If the motor potentiometer is activated, the output accepts the signal value
assigned to be input before. If the signal value is not withing the motor
potentiometer limit, it will be reduces to the corresponding limit value (depending
on the acceleration and deceleration time).
If the motor potentiometer is deactivated, its output reacts as selected under
C264.
- 0 - No further action, value is stored
- 1 - The motor potentiometer decelerates or accelerates to 0%.
- 2 - The motor potentiometer decelerates or accelerates to the lower limit value (C261).
- 3 - The motor potentiometer immediately changed its output to 0% (important for the emergency-switch-off
function)
- 4 - The motor potentiometer immediately changes its output to the lower limit value (C261).
- 5 - The motor potentiometer decelerates or accelerates to the upper limit value (C260).
Upper limit value (C260)
2
1
Lower limit value (C261)
4900Str058