198 HEIDENHAIN Technical Manual MANUALplus 620
Conducted
interference
To suppress conducted interference, the conductors for the 24 NC and 24 V
PLC output voltages (X90 of the PSL) must be passed through a toroidal core
(ID 309 694-07, inside diameter 14 mm). There are different ways to do this
depending on the PSL variant:
Variants 02 and 03 of the PSL 130, variant 01 of the PSL 135
The toroidal core is included with the PSL. The output lines of connector X90
(24 V NC, 24 V PLC) must be passed through the toroidal core in order to
suppress conducted interference. The lines must not be wound around the
toroidal core, however.
Variant 02 of the PSL 135, variant 04 of the PSL 130
The toroidal core is integrated in the unit. No further external measures for
noise suppression must be taken.
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