User Manual 08/2003 Edition

2
2 Installing and Connecting–up 02.99 08.03
2.2 Electrical system requirements
Line
supply
2-28
400 V
Contactor
24 V / 48 V
DC-PMM
SIMODRIVE
POSMO A
Switching–in/switching–out the 24 V / 48 V load power supply on the
primary side (line–specific)
e.g. SITOP
This is absolutely necessary in order
to eliminate cable–borne
disturbances
Fig. 2-3 Switching–in/switching–out the 24 V / 48 V load power supply on the secondary side
Line
supply
Contactor
400 V
24 V / 48 V
DC-PMM
SIMODRIVE
POSMO A
. . .
Switching–in/switching–out the 24 V / 48 V load power supply on the
primary side (line–specific) with a POSMO A which is to be separately
switched
e.g. SITOP
Optional, according to Chapter 2.2.3
Contactor
DC-PMM
SIMODRIVE POSMO A
e.g. for a protective gate
This is absolutely necessary in
order to eliminate cable–borne
disturbances
Fig. 2-4 Switching–in/switching–out 24 V / 48 V on the primary side with a POSMO A to be separately
switched
Siemens AG 2003 All rights reserved
SIMODRIVE POSMO A User Manual (POS1) – 08.03 Edition