HEIDENHAIN MANUALplus 620 Technical Manual page 95

PSL 135
Power supply unit for supplying the HSCI
components for use of a non-HEIDENHAIN
inverter system.
The power is supplied via line voltage (L1, L2)
and the DC-link voltage U
produce the +24 V NC, +24 V PLC and +5 V
output voltages.
+24 V NC and +24 V PLC are produced by two
internally separated power supplies. The NC
and PLC power supplies are galvanically
isolated and fulfill the requirements of
EN 61800-5-1 for "low voltage electrical
separation."
Output voltages must be grounded according
to EN 60204-1:2006 "protective extra-low
voltage (PELV)" (see Grounding Diagram).
+24 V NC and +24 V PLC can be connected in
parallel. This way the PSL 135 provides an
output voltage of +24 V at a maximum output
power of 750 W.
Please observe the information and regulations
for the power connection cited under "PSL 13x
low-voltage power supply unit" on page 189 and
in the "Inverter Systems and Motors" Technical
Manual.
ID 627 032-xx
January 2012
. This is used to
z
2.5 Component Overview of MANUALplus 620 95