11.03 8 Application examples
8.3 Testing the function of the brake mechanical system
© Siemens AG 2003 All Rights Reserved
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
8-455
TV_FXShold := S5T#2S,//Monitoring time value: Test time Brake
CloseBrake := M 111.1,//Request, close brake
MoveAxis := M 111.2,//Request, initiate traversing motion
Done := M 111.3,//Test successfully completed
Error := M 111.4,//Error has occurred
State := MB 112);//Error status
OPEN "Axis3"; //Brake test, Z axis
O M (GND) 111.3; //Test ended successfully
M (GND) 111.4; //Fault/error occurred
FP M (GND) 110.3;
R DBX 28.7; //Request, PLC monitored axis
UN DBX 63.1; //Checkback signal, the PLC is monitoring the axis
M (GND) 111.0; //Start brake test for FB
M (GND) 110.7; //Brake test running
FP M (GND) 110.4;
R M (GND) 111.0; //Start brake test for FB
R M (GND) 110.7; //Brake test running
CALL "SpinCtrl" (//Traverse Z axis
Start = M 111.2, //Start traversing motion
Stop := FALSE,
Funct := B#16#5,//Mode: Axis mode
Mode := B#16#1,//Traversing: Incremental
AxisNo := 3,//Axis number of the axis to be traversed, Z axis
Pos := -5.000000e+000,//Distance: Minus 5 mm
Frate := 1.000000e+003,//Feed rate: 1000 mm/min
InPos := M 113.0,//Position reached
Error := M 113.1,//Error has occurred
State = MB 114); //Error status
8.3.4 Limitations
During the brake test, traversing to fixed endstop and traverse with limited
torque (FOC) may not be active at the same time. In this case, Alarm 20092,
"Axis %1 Travel to fixed stop still active" is triggered.
During the brake test, contour monitoring is not active and also no standstill
monitoring after the PLC has started traversing motion.
The brake test is only possible for SIMODRIVE 611 digital. It cannot be used
for gantry axes.
8.3.5 Activating
The brake test must always be started when the axis is at a standstill. For the
entire duration of the brake test, the enable signals of the parameterized axis
must be set to enable (e.g. the signals, controller inhibit, feed enable).
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