DMC SuperSigma2 User Manual

SuperSigma2 AM PMS – V1.5.6 17-1-2020 Page 35 (97) ©2019 DMC GmbH Herten Germany
Situation 7: “M3-2T Control Mode “Spd/Torq”” = 3 (Torque control mode with Speed Control Mode at the
end of braking and at the end of footbrake operation) and “M3-4T Hill hold ”Off/HH/S”” = 1 (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 and in
footbrake operation. Since hill hold is selected, the parameters “M1-19T Hill hold time ”HHTime””, “M1-20T Restraint hill
hold speed ”HHspeed”” and “M1-21T Restraint hill hold torque threshold ”HHTrqTH”” will be active.
The sequence of operation of the “end of braking” function in case of neutral braking is the same of situation 6.
The sequence of operation of the “end of braking” function in case of footbrake operation is represented in the following
figure.
Footbrake operation in FOOT BRAKING in Torque control Mode with Speed Mode at the end of braking and at the end of
footbrake operation, hill hold enabled
The following list describes the “end of braking” steps:
1. the speed decreases according to “M1-13T Foot brake torque “FBrake”” and the “Brake pot %” value (refer to
“M1-54T Brake pot minimum “BrkMin”” and M1-55T Brake pot maximum “BrkMax””);
2. when speed is below setting “M1-15T Speed threshold to enter end of braking mode ”SpdThEbM””, the
controller starts to control speed. The ramp time to zero is derived according to the brake pot position between
“M1-16T Speed threshold Ramp time to zero speed ”SpdRmpTm”” and “M1-17T Foot Brake Speed threshold
Ramp time to zero speed “SpdRTmFB”.
3. when speed is below “M1-18T Zero Speed Threshold to enter hill hold or neutral brake end ”ZSpdTh””, the
controller continues to control speed, slowing linearly down to zero according to “M1-16TSpeed threshold Ramp
time to zero speed ”SpdRmpTm””.
5. when the vehicle stops, it enters in Hill Hold mode and is held still until “M1-19THill hold time ”HHTime”” time
is elapsed. The vehicle is kept still by means of speed control algorithm;
6. when “M1-19THill hold time ”HHTime”” is elapsed, two situations are possible:
I. if the vehicle is on a slope it will roll (back or forward according to the slope) at “M1-20T Restraint hill
hold speed ”HHspeed”” until level ground is detected, then it stops moving.
II. If the vehicle is already at level ground the vehicle is held still.
Level ground is detected when actual torque drops below “M1-21T Restraint hill hold torque threshold
”HHTrqTH””.
7. The controller keep pulsing until handbrake input (digital input 7) becomes active. Otherwise the controller never
stops pulsing until it is switched off! If digital input 7 is select as speed input 3 it never stops pulsing even if this
is activated.

DMC SuperSigma2 Specifications

General

Brand	DMC
Model	SuperSigma2
Category	Engine
Language	English