Figure 16: Acceleration Response Rate - Kohler Curtis F Series Manual

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PARAMETER
HS (High Speed)
HS
0x3107 0x00
LS (Low Speed)
LS
0x3109 0x00
Max Speed Accel
Max_Speed_Accel_SpdM
0x3836 0x00
Max Speed Decel
Max_Speed_Decel_SpdM
0x3837 0x00
Reversal Soften
Reversal_Soften
0x310B 0x00
Figure 16
Acceleration Response
Rate Diagram.
In this example,
HS = 70 %,
LS = 30 %,
Typical Max Speed = 5000 rpm
4 — PROGRAMMABLE PARAMETERS
Curtis AC F2-A, F4-A, F6-A Motor Controllers – FOS 4.5 – April 2022
SPEED MODE/RESPONSE — FINE TUNING MENU
ALLOWABLE RANGE DEFAULT
0 – 100 % 70 %
0 – 32767
0 – 100 % 30 %
0 – 32767
0.1 – 30.0 s 1.0 sec
100 – 30000
0.1 – 30.0 s 10.0 sec
100 – 30000
0 – 100 % 20 %
0 – 3000
FASTER
ACCEL RATE
(seconds)
Full Accel Rate LS = 1.5
Full Accel Rate HS = 3.0
Low Accel Rate = 20.0
(LS x Typical_Max_Speed)
= 30% x 5000 rpm = 1500
DESCRIPTION
Sets the percentage of the Typical Max Speed above which the
HS parameters will be used.
See Figures 16 and 17 (below).
Sets the percentage of the Typical Max Speed below which the LS
parameters will be used.
See Figures 16 and 17 (below).
In some applications the Max Speed value is changed frequently
through VCL or over CAN (PDOs). The Max Speed Accel parameter
controls the rate at which the maximum speed setpoint is allowed
to change when the value of Max Speed is raised. The rate set
by this parameter is the time to ramp from 0 rpm to Typical Max
Speed rpm.
For example, suppose the Max Speed is raised from 1000 rpm
to 4000 rpm. If the Typical Max Speed is 5000 rpm and the rate
is 10.0 seconds it will take 10.0 * (4000-1000) / 5000 = 6.0
seconds to ramp from 1000 rpm to 4000 rpm.
This parameter works like the Max Speed Accel parameter except
that it controls the rate at which the maximum speed setpoint is
allowed to change when the value of Max Speed is lowered.
For example, suppose the Max Speed is decreased from 4500
rpm to 2500 rpm. If the Typical Max Speed is 5000 rpm and the
rate is 5.0 seconds it will take 5.0 * (4500-2500) / 5000 = 2.0
seconds to ramp from 4500 rpm to 2500 rpm.
Larger values create a softer reversal from regenerative braking
(regen) to drive when near zero speed. This helps soften the
transition when the regen and drive current limits are set to
different values.
Note: This parameter is not mode-specific.
MOTOR SPEED
LOW SPEED HIGH SPEED
(HS x Typical_Max_Speed)
= 70% x 5000 rpm = 3500
90% Throttle
10% Throttle
FASTER
TYPICAL MAX
SPEED
pg. 55