DMC Sigma2N - Menu 1.5 Hill Hold

Simga2N Traction Advanced Manual– V1.3 Page 60 (166) ©2021 DMC GmbH Herten Germany
Menu 1.5 “Hill hold”
Cal.
Ref.
Parameter name “Calibrator text”
Range
Step
size
Default
Index
Sub-
index
1
Hill hold enable ”Off/HH/S”
0 - 2
1
0
0x2008
0x1
2
Hill hold time ”HHTime”
0s – 60s
1 s
5 s
0x2008
0x2
3
Restraint hill hold speed ”HHspeed”
1.0Hz – 7.0Hz
0.5
Hz
3.0 Hz
0x2008
0x3
4
Restraint hill hold torque threshold ”HHTrqTH”
0.1% - 35.0%
0.1 %
1.5 %
0x2008
0x4
5
Hill hold/positioning proportional gain ”KpPos”
0.0 – 10.0
0.1
1.0
0x2008
0x5
6
Hill hold/positioning derivative gain ”KdPos”
0.0 – 32.0
0.1
3.0
0x2008
0x6
7
Hill hold/positioning dead band ”PosDBand”
0 - 720
1
0
0x2008
0x7
M1.5-1 Hill hold enable ”Off/HH/S”
This sets whether there is a hill-hold function when the vehicle is at rest. Hill hold can be activated if “M2-1
Control Mode “Spd/Torq”” is set to 0 (Speed Mode) or 2 (Torque mode with speed mode for the end of braking).
• If set to 0 (Coast), then there is no restraint function and the vehicle is free to coast when zero speed
is reached and “M1.2-3 Neutral brake-end delay “NBrkEnd”” time is elapsed.
• If set to 1 (Hill Hold & Restraint), the controller at the end of braking will manage the vehicle with hill
hold function. Following neutral braking (by opening Foot switch in Ride On vehicle or selecting
Neutral in Walkie vehicle type, refer to “M2-2 Vehicle type selection ”Ride/Wlk”” for more information
about this) the vehicle will enter and remain in Hill Hold mode for a period set by the parameter “M1.5-
2 Hill hold time ”HHTime””. During this period, the vehicle will remain stationary. After this time has
elapsed, the vehicle will enter in “Restraint Hill Hold mode” and move at speed set by the parameter
“M1.5-3 Restraint hill hold speed ”HHspeed””.
On Ride On vehicle (“M2-2 Vehicle type selection ”Ride/Wlk””=0), if neutral braking is operated by
means of selecting neutral with direction switch but the accelerator pedal is still pressed (Foot Switch
still active), the Hill Hold mode is skipped and the Restraint hill hold is applied directly.
If the vehicle reaches level ground and the vehicle is no longer moving the controller will reduce
current applied to the motor to save battery power.
Level ground is detected when torque necessary to hold vehicle in restraint Hill hold is lower than
“M1.5-4 Restraint hill hold torque threshold ”HHTrqTH””
If the motor begins to move again, without Accelerator demand being applied, then the controller will
re-enter in Restraint Hill Hold mode until the handbrake is applied.
When the Handbrake is applied the controller stops giving power to the motor to save battery power.
If hand brake is released again the vehicle will coast unless accelerator is pressed and one direction
input is active.
In case Hand brake function is not active (“M2-4 Digital input 7 configuration ”Spd3/Hbk”” set to 0),
the controller will keep giving power to the motor and will exit from Hill Hold mode only if accelerator
is pressed and one direction input is active.
• If Set to 2 (Hill Hold & Stop giving power to the motor on level ground), it has the same features when
set 1 (Hill Hold & Restraint) except the following:
i. If the vehicle reaches level ground and the vehicle is no longer moving, the controller stop
giving power to the motor and reduce current applied to the motor to zero.
ii. If the motor begins to move again, without Accelerator demand being applied, then the
controller let the motor coast until accelerator is applied again.
M1.5-2 Hill hold time ”HHTime”
This setting is only active when “M1.5-1 Hill hold enable ”Off/HH/S”” is set to 1 or 2.
It defines the time for which the vehicle has to be kept into hill hold mode.
M1.5-3 Restraint hill hold speed ”HHspeed”
This setting is only active when “M1.5-1 Hill hold enable ”Off/HH/S”” is set to 1 or 2.
It defines the speed that the vehicle should adopt after the hill hold time has elapsed and the restraint hill hold
mode is entered.