Siemens SIMODRIVE POSMO A

2
2.2 Electrical system requirements
2-34
E Siemens AG 2013 All Rights Reserved
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
Our second recommendation for the 48 V power supply:
Use two SITOP power regulated power supply modules connected in
series to provide the 48 V load power supply.
There are units with current ratings of 10 A, 20 A and 40 A.
V
1
V
2
Note:
S V
x
Protective diode (blocking voltage: 40 V, current: 3 A)
e.g.: Type SB 540 from RS components Spoerle
Order No.: 183–4337
S When connected in series, the SITOP power must have the
same current ratings.
24 V
M
48 V
L+
M
SITOP power
L+
M
SITOP power
Regener-
ative
feedback
protection
(e.g.
DC-PMM)
24 V
Fig. 2-6 Two SITOP power connected in series to double the voltage
Reference: /KT101/ SITOP power, power supplies
Catalog
Regenerative feedback protection when braking the motor (refer to
Chapter 2.2.3)
2 Installing and Connecting–Up
02.9905.13