274 HEIDENHAIN Technical Manual iTNC 530 HSCI
X9 – Safety: Safety-
related PLC inputs/
outputs
Pin layout of PLB 620x FS:
The triggering outputs at X9 each supply up to 150 mA of output current. The
only exceptions are the two outputs -STOS.A.G and -STO.A.G with max. 2 A
of output current. In the event of an overload or short circuit and as a
consequence of excessive temperature, the individual PLC outputs switch off
automatically. Then the outputs will try to switch on again cyclically.
Two outputs and six inputs are available at X9 of a PLB 620x FS for free use.
Further PLC inputs/outputs must be realized by means of I/O modules.
Terminal NEW signal
design.
OLD connector/signal design.
(MC 42xC)
Assignm. / Function
1a 24 V.A X44 24 V supply of the outputs
MC.RDY, O.0 to O.1
2a –STOS.A.G
a
–SHS1A (safe stop of spindle)
X41.32
24 V output: (spindle safe
torque off)
3a –STO.A.G
a
–SH1A (safe stop)
X41.34 / O33
24 V output: (safe torque off)
Control-is-ready signal
4a TEST.A T.2 / X165.2 24 V output for emergency stop
chain
5a O0.A 24 V outputs (high-side driver)
6a O1.A
7a –ES.A –NE1 / X42.4 / I3
Acknowledgment: "Control is ready"
24 V input
Emergency Stop input 1
8a I0.A 24 V inputs (PLC)
9a I1.A
10a I2.A
11a I3.A
12a I4.A
13a I5.A
14a –PF.PS.AC –PF.PS.AC (signal at X69) 24 V outputs for powerfail
15a –PF.PS.DC –PF.PS.ZK (signal at X69)
1b 24 V.B X44 24 V supply of the outputs O.0
to O.1
2b 0 V 0 V PLC for all I/Os
3b Do not assign 24 V outputs (high-side driver)
4b TEST.B T.1 / X165.1 24 V output for emergency stop
chain
5b O0.B 24 V outputs (high-side driver)
6b O1.B
7b –ES.B –NE2 / X42.33 / I32
"Drive enabling"
24 V input
Emergency Stop input 2