Reliance electric GV3000SE, Instruction Manual

Page: 110 / 198

4 - GENERAL PARAMETERS, DESCRIPTION
4 - 16 GV3000/SE 49'1329 e
P.016 Draw Gain Percentage
Parameter Range: -100.0% to +100.0% (1.0 = 1% of speed reference)
Initial Setting: 0.0
Type: Tunable (at rest or during operation)
Description: This parameter is used to increase or decrease the selected speed reference to the
speed regulator by a percentage value of speed reference. (See Figure 4-4.)
It allows multiple drive sections with a common line reference, but with different
values for draw gain, to run at different speeds depending on the percent draw.
Note that P.016 affects the accel/decel times. As draw gain increases positive, the
accel/decel time decreases proportionately. As draw gain increases negative, the
accel/decel time increases proportionately. This is based on the following formula:
Modified Accel/Decel = Accel/Decel x [1 / (1.00 + (Draw% / 100))]
P.017 Acceleration Time 2 (RAMP 2)
Parameter Range: 1.0 - 999.9 seconds (V/Hz) or 0.1 - 999.9 seconds (Vector)
Initial Setting: 20.0
Type: Tunable (at rest or during operation)
Refer to: P.001 Acceleration Time 1 P.007 Terminal Strip Digital Inputs Configure
Description: This parameter sets the acceleration time when a second ramp selection is
configured as a digital input. Acceleration time in which the motor ramps from zero
to Motor Top Speed (Vector: U.017) or Maximum Hz (V/Hz: P.004) after starting.
When RAMP 2 acceleration time digital input is asserted, the RAMP 2 deceleration
time also takes effect.
If the motor load inertia is high or the current limit (P.005) setting is too low, actual
motor acceleration time will be longer than the time set in P.017.
The time the motor takes to make any speed decrease is directly proportional to the
value in this parameter. This parameter does not apply if Jog is selected.
P.018 Deceleration Time 2 (RAMP 2)
Parameter Range: 1.0 - 999.9 seconds (V/Hz)
0.1 - 999.9 seconds (Vector)
Initial Setting: 20.0
Type: Tunable (at rest or during operation)
Refer to: P.002 Deceleration Time 1
P.007 Terminal Strip Digital Inputs Configure
Description: This parameter sets the deceleration time when a second ramp selection is
configured as a digital input. When RAMP 2 deceleration time digital input is
asserted, the RAMP 2 acceleration time also takes effect.
Deceleration time is the time in which the motor decreases from Motor Top Speed
(Vector: U.017) or Maximum Hz (V/Hz: P.004) to zero speed when performing a
ramp stop (P.025 =1).
The time the motor takes to make any speed decrease (except a coast-to-rest stop)
is directly proportional to the value in this parameter.
This parameter does not apply if Jog is selected.