Simga2N Traction Advanced Manual– V1.3 Page 51 (166) ©2021 DMC GmbH Herten Germany
Situation 4: “M2-1 Control Mode “Spd/Torq”” = 3 (Torque control mode with speed control mode at end of
braking if footbrake operation or at zero speed) and “M1.5-1 Hill hold enable ”Off/HH/S”” = 0 (No Hill Hold)
In this case the controller acts to control the torque in normal drive and to control the speed at the end of braking
if footbrake operation and in any case below “M1.2-2 Zero speed threshold ”ZSpdTh””. No hill hold is selected, thus the
parameters “M1.5-2 Hill hold time ”HHTime””, “M1.5-3 Restraint hill hold speed ”HHspeed”” and “M1.5-4 Restraint hill
hold torque threshold ”HHTrqTH”” won’t be active.
The sequence of operation of the “end of braking” function in case of neutral braking is the same of situation 3.
End of braking if FOOT BRAKING in Torque control Mode with Speed Control Mode at end of braking if footbrake operation or at
zero speed, no hill hold
The following list describes the “end of braking” steps:
1. the speed decreases according to “M1.1-9 Foot brake torque “FBrake”” and the “Brake pot %” value (refer to
“M1.7-1 Brake pot minimum voltage level “BrkMin”” and M1.7-2 Brake pot maximum voltage level “BrkMax””);
2. when speed is below setting “M1.2-1 Speed threshold to enter End-of-Braking (EoB) mode ”SpdThEoB””, the
controller starts to control speed. The ramp time to zero is derived according to the brake pot position between
“M1.2-4 Ramp time from the EoB speed threshold to zero ”SpdRmpTm”” and “5M1.2-5 Ramp time from the
EoB speed threshold to zero with Footbrake “SpdRTmFB”. The ramp time will be changed to assure a smoothed
stop;
3. when speed is below “M1.2-2 Zero speed threshold ”ZSpdTh””, the controller continues to control speed,
slowing linearly down to zero according to “M1.2-4Ramp time from the EoB speed threshold to zero
”SpdRmpTm””;
4. when the vehicle stops, it is held still until “M1.2-3 Neutral brake-end delay “NBrkEnd”” time is elapsed and
the footbrake has not been released. The vehicle is kept still by means of speed control algorithm;
5. the controller stops giving power to the motor and the vehicle is let coast or roll on slope (if any) unless
mechanical brake or electromechanical brake is applied.
During the end of braking operation, If pedal brake is removed and a direction selected with accelerator pedal
demand (add foot switch in case of ride vehicle) the vehicle will start to move in the selected direction.
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