224 HEIDENHAIN Technical Manual MANUALplus 620
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 conse-
quence of excessive temperature, the individual PLC outputs switch off auto-
matically. 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 on X69) 24 V outputs for powerfail
15a –PF.PS.DC –PF.PS.ZK (signal on 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
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