280 HEIDENHAIN Technical Manual MANUALplus 620
X7: PLC outputs Pin layout:
Ampacity of the outputs: Maximum 150 mA per output. 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.
Connecting
terminals
Assignment
1 O0 (illumination for the NC Start key)
a
a. With standard wiring
2 O1 (illumination for the NC Stop key)
a
3 O2 (illumination for the Control voltage ON key)
a
4O3
5O4
6O5
7O6
8O7
9 +24 V NC (available here)
10 0 V NC (available here)
Please note that the outputs of connector X7 are powered internally by
+24 V NC, and therefore supply +24 V NC at HIGH level.
For the entire HSCI system, the +24 V NC supply voltage is required to be
safely separated voltage. The +24 V NC supply voltage must not, under any
circumstances, be connected with the +24 V PLC supply voltage, because
this removes the double basic insulation.
Each of the switching outputs at X7 supplies up to 150 mA of output
current. They are provided for driving the lamps on the operating panel.
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