934 HEIDENHAIN Technical Manual iTNC 530 HSCI
Maximum reaction times of the control until the response is triggered at the
input after the signal change.
Minimum required pulse width for detection by the control at PLC inputs on
PLDs in slots 1 to 4: pulse width > 6 ms
MP2173.x Pulse switch-off of the power stage (STO.B.x)
Input: 0.2 to 100.000 [s]
0 = 3 seconds (default value)
PLC outputs PLC outputs can be controlled by the PLC program and switched off in the
event of an emergency stop. Additionally, the IOconfig configuration tool
enables you to define the behavior of PLC outputs in the event of an
emergency stop. Outputs that are defined as output type 3 (switch-off in case
of an emergency stop) are switched off (= 0) if an external or internal
emergency stop is triggered. In this case, the type 3 outputs remain switched
off until the emergency stop is rescinded and the control voltage has been
switched on again.
Input Response period Response
PLC input on PLD in
slots 1 to 4
18 ms Stop axis group along the
emergency braking ramp
PLC input on PLD in
slots 5 to 8
21 ms Stop axis group along the
emergency braking ramp
The time for switching off the pulses via -STO.B.x, (entry in MP2173.x)
must always be greater than the maximum possible braking time of the
axis/spindle that can occur through electrical braking.
However, do not set too large a value in MP2173. Otherwise the safety
function of the machine parameter cannot be ensured.
Test the desired behavior of the PLC outputs in the event of an emergency
stop!
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