Parker AC890 Product Manual page 418

REFERENCE RAMP
SETUP::SEQ & REF::REFERENCE RAMP
This function block forms part of the reference generation. It provides the facility to control the rate at which the Drive will
respond to a changing setpoint demand.
Parameter Descriptions
RAMP TYPE
Select the ramp type:
Enumerated Value : Ramp Type
ACCEL TIME
The time that the Drive will take to ramp the setpoint from 0.00% to 100.00%.
DECEL TIME
The time that the Drive will take to ramp the setpoint from 100.00% to 0.00%.
SYMMETRIC MODE
Select whether to use the ACCEL TIME and DECEL TIME pair of ramp rates, or to use the SYMETRIC RATE parameter to
define the ramp rate for the Drive.
SYMMETRIC TIME
The time that the Drive will take to ramp from 0.00% to 100.00% and from 100.00% to 0.00% when SYMETRIC MODE is TRUE.
SRAMP CONTINUOUS
When TRUE, and S ramp is selected in RAMP TYPE, forces a smooth transition if the speed setpoint is changed when
ramping. The curve is controlled by the SRAMP ACCEL and SRAMP JERK 1 to SRAMP JERK 4 parameters. When FALSE,
there is an immediate transition from the old curve to the new curve.
890SD Standalone Drive - Frames G, H & J
PREF: 100.01
0 : LINEAR
1 : S
PREF: 100.02
PREF: 100.03
PREF: 100.04
PREF: 100.05
PREF: 100.06
Default: 0
Default:
Default:
Default: FALSE
Default: 10.0
Default: TRUE
Range: See below
Range: 0.0 to 3000.0 s
Range: 0.0 to 3000.0 s
Range: FALSE / TRUE
Range: 0.0 to 3000.0 s
Range: FALSE / TRUE
D-127
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