ABB ACSM1 Firmware Manual page 101

22.03 MOTOR GEAR MUL
Defines the motor gear numerator for the motor encoder gear function.
22.03 MOTOR GEAR MUL
----------------------------------------------------------------------- -
22.04 MOTOR GEAR DIV
where input speed is encoder 1/2 speed
speed estimate (1.14 SPEED
See section Motor encoder gear function
31 31
-2 ... 2 -1
22.04 MOTOR GEAR DIV
Defines the motor gear denominator for the motor encoder gear function. See parameter
MOTOR GEAR MUL.
31
1 ... 2 -1
22.05 ZERO SPEED LIMIT
Defines the zero speed limit. The motor is stopped along a speed ramp until the defined zero speed
limit is reached. After the limit, the motor coasts to stop.
Note: Too low a setting may result in the drive not stopping at all.
0...30000 rpm
22.06 ZERO SPEED DELAY
Defines the delay for the zero speed delay function. The function is useful in applications where
a smooth and quick restarting is essential. During the delay the drive knows accurately the rotor
position.
No Zero Speed Delay
Speed
Speed controller
switched off: Motor
coasts to stop.
No Zero Speed Delay
The drive receives a stop command and decelerates along a ramp. When the motor actual speed falls
below an internal limit (called Zero Speed), the speed controller is switched off. The inverter
modulation is stopped and the motor coasts to standstill.
With Zero Speed Delay
The drive receives a stop command and decelerates along a ramp. When the actual motor speed falls
below an internal limit (called Zero Speed), the zero speed delay function activates. During the delay
the function keeps the speed controller live: the inverter modulates, motor is magnetised and the drive
is ready for a quick restart. Zero speed delay can be used e.g. with the jogging function.
0...30000 ms
FW block: SPEED FEEDBACK
Actual speed
= --------------------------------- -
Input speed
(1.08 ENCODER 1 SPEED
ESTIMATED).
on page 45.
Numerator for motor encoder gear. Note: A setting of 0 is changed
internally to 1.
FW block: SPEED FEEDBACK
Denominator for motor encoder gear.
FW block: SPEED FEEDBACK
Zero speed limit.
FW block: SPEED FEEDBACK
22.05 ZERO SPEED LIMIT
Time
22.06 ZERO SPEED DELAY
Zero speed delay.
(see above)
/ 1.10 ENCODER 2
(see above)
(see above)
(see above)
With Zero Speed Delay
Speed
Speed controller remains live.
Motor is decelerated to true 0
speed.
Time
Parameters and firmware blocks
101
SPEED) or
22.03