216 HEIDENHAIN Technical Manual MANUALplus 620
3.11 Power Supply for PLB 6xxx (FS)
X3: +24 V NC,
+24 V PLC power
supply
Power consumption of the PL 6xxx via X3 if every slot is used (including the
TS, TT):
at +24 V NC: max. 48 W
at +24 V PLC: max. 21 W
For more details regarding the power supply, see page 182.
The power to the PLC outputs is also supplied via the corresponding terminals
on the respective I/O module connectors for PLC outputs. The power con-
sumption of the +24 V PLC via X3 and the power consumption of the PLC out-
puts add to each other.
Pin layout of X3:
Supply voltage for logic and PLC outputs
The control cyclically monitors the supply voltage of the PL 6xxx.
Connecting terminal Assignment
1 (top terminal) + 24 V NC
2 0 V NC (ground + 24 V NC)
3 Protective ground
Minimum wire cross section of
the power cables for 24 V PLC
4 + 24 V PLC
5 (bottom terminal) 0 V PLC (ground + 24 V PLC)
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