Curtis 1238SE - Page 35

4 — PROGRAMMABLE PARAMETERS
pg. 31
Return to TOC Curtis 1232E/34E/36E/38E & 1232SE/34SE/36SE/38SE Manual, os 31 – May 2017
0 - SPEED MODE EXPRESS — SPEED MODE EXPRESS MENU
PARAMETER ALLOWABLE RANGE DESCRIPTION
Max Speed
Max_Speed_SpdMx
0x3840 0x00
100 – 8000 rpm
100 – 8000
Denes the maximum requested motor rpm at full throttle. Partially-
applied throttle is scaled proportionately; e.g., 40% applied throttle
corresponds to a request for 40% of the set Max Speed Value.
If Max_Speed_SpdMx is set <10 rpm (through VCL or CAN), the throttle
request is zeroed
NOTE: The maximum motor rpm is subject to the constraints on page 24.
Kp
Kp_SpdMx
0x3841 0x00
0 – 100%
0 – 8192
Determines how aggressively the speed controller attempts to match
the speed of the motor to the commanded speed. Larger values provide
tighter control.
If the gain is set too high, you may experience oscillations as the controller
tries to control speed. If it is set too low, the motor may behave sluggishly
and be difcult to control.
Ki
Ki_SpdMx
0x3842 0x00
5 – 100%
50 – 1000
The integral term (Ki) forces zero steady state error, so the motor will run
at exactly the commanded speed. Larger values provide tighter control.
If the gain is set too high, you may experience oscillations as the controller
tries to control speed. If it is set too low, the motor may take a long time to
approach the exact commanded speed.
Accel Rate
Accel_Rate_SpdMx
0x3843 0x00
0.1 – 30.0 s
100 – 30000
Sets the rate (in seconds) at which the speed command increases when
throttle is applied. Larger values represent slower response.
Decel Rate
Decel_Rate_SpdMx
0x3847 0x00
0.1 – 30.0 s
100 – 30000
Sets the rate (in seconds) that is used to slow down the vehicle when the
throttle is reduced. Larger values represent slower response.
Brake Rate
Brake_Rate_SpdMx
0x3848 0x00
0.1 – 30.0 s
100 – 30000
Sets the rate (in seconds) at which the vehicle slows down when brake is
applied or when throttle is applied in the opposite direction. Larger values
represent slower response.
Pump Enable*
|AC_Pump_Enable_SpdM
|AC_Pump_Enable_SpdM_Bit0 [Bit 0]
0x3896 0x00
On / Off
On / Off
This parameter should be programmed On to operate a pump motor rather
than a vehicle drive motor. The speed-controller responsiveness and
stability are enhanced for pump-motor applications.
Regen Lower Enable*
Regen_Lower_Enable_SpdM
Regen_Lower_Enable_SpdM_Bit0
[Bit 0]
0x3877 0x00
On / Off
On / Off
This parameter works together with Pump Enable as follows:
1) When Pump Enable = On and Regen Lower Enable = On, the pump
motor can turn in both the forward and the reverse direction. In this
case, the pump can be used as the Lower function (reverse). The pump
motor, when “driven in reverse by a load” will also regen current in a
similar fashion to a drive-motor regenerative braking.
2) When Pump Enable = On and Regen Lower Enable = Off, the pump
motor can turn only in the forward direction. In this case, a hydraulic
valve is typically used for the Lower function.
3) When Pump Enable = Off, the Regen Lower Enable parameter has no
effect on the control system.
* This parameter appears twice in the parameter menu structure. Changing the value of this parameter affects the same parameter in Speed Mode.
CONTROL MODE SELECT
PARAMETER ALLOWABLE RANGE DESCRIPTION
Control Mode Select PCF
0 – 2 This parameter determines which control method will be in effect when
programming motor response:
0 = SPEED MODE EXPRESS
1 = SPEED MODE
2 = TORQUE MODE
Contact your Curtis distributor or support engineer if you are interested in a
custom control method.
NOTE: Do not change this parameter while the controller is powering the motor. Any
time this parameter is changed a Parameter Change Fault (fault code 49) is set and
must be cleared by cycling power; this protects the controller and the operator.
Control_Mode_Select 0 – 2
0x3010 0x00