GE Industrial Solutions AF-60 LP Micro Drive - Manual (Page 29)

Limitation:
Too short of an Accel time can result in Torque limit warning (W12) and/or DC over voltage warning (W7). Ramping is stopped when the frequency converter has
reached Torque limit motor mode (par. 4-16).
Too short of a Decel time can result in Torque limit warning (W12) and/or DC over voltage warning (W7). Ramping is stopped when the frequency converter reaches
the Torque limit generator mode (par. 4-17) and/or the internal DC over voltage limit.
3-40 Accel/Decel 1 Type
Option: Function:
[0] * Linear Constant acceleration/deceleration.
[2] S-ramp Smooth jerk compensated acceleration/deceleration.
3-41 Accel Time 1
Range: Function:
3.00 s * [0.05 - 3600.00 s ]
Enter accel time from 0 Hz to rated motor frequency (f
M,N
) set in par. 1-23.
Choose a accel time ensuring that torque limit is not exceeded, see par. 4-16.
3-42 Decel Time 1
Range: Function:
3.00 * [0.05 - 3600.00 s]
Enter decel time from rated motor frequency (f
M,N
) in par. 1-23 to 0 Hz.
Choose a decel time that does not cause over-voltage in due to regenerative operation of motor. Furthermore, regen-
erative torque must not exceed limit set in par. 4-17.
4.4.5. 3-5* Accel/Decel 2
See par. 3-4* for a description of ramp types.
NB!
Accel/Decel 2- alternative ramp times:
Changing from Accel/Decel 1 to Accel/Decel 2 is done via the digital input. See par. 5-1*, selection [34].
3-50 Accel/Decel 2 Type
Option: Function:
[0]
* Linear Constant acceleration/deceleration.
[2] S-ramp Smooth jerk compensated acceleration/deceleration.
3-51 Accel Time 2
Range: Function:
3.00 s
*
[0.05 - 3600.00 s]
Enter accel time from 0 Hz to rated motor frequency (f M,N ) set in par. 1-23.
Choose a accel time ensuring that torque limit is not exceeded, see par. 4-16.
3-52 Decel Time 2
Range: Function:
3.00 s [0.05 - 3600.00 s] Enter decel time from rated motor frequency (f M,N ) in par. 1-23 to 0 Hz.
Choose a decel time that does not cause over-voltage in due to regenerative operation of motor. Furthermore, regen-
erative torque must not exceed limit set in par. 4-17.
4.4.6. 3-8* OtherAccel/Decel Ramps
This section contains parameters for Jog and Quick Stop Ramps.
With a Jog Ramp you can both ramp up and down whereas you can only ramp down with the Quick Stop Ramp.
AF-60 LP™ Micro Drive Programming Guide
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