User Manual 08/2003 Edition

2
2 Installing and Connecting–up 02.99
2.2 Electrical system requirements
2-30
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.
L+
SITOP power
M
L+
SITOP power
M
24 V
24 V
Note:
V x Protective diode (blocking voltage: 40 V, current: 3 A)
e.g.: Type SB 540 from RS components Spoerle
Order No.: 183-4337
When connected in series, the SITOP power must have the
same current ratings.
V 1
V 2
Regenerative
feedback
protection
(e.g.
DC-PMM)
48 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
Our third recommendation for the 48 V power supply:
Use a rectifier unit to generate the 48 V load power supply.
The rectifier unit is an uncontrolled DC power supply with safety transformer
and varistor circuit.
Order No.: 4AV3596-0EG30-0C
Applicable regulations
– EN 61558, EN 61131-2
– Noise immunity EN 50082-2, noise emission EN 50081-1
– For connection to the public supply/industrial line supplies
suitable according to EN 61000-3-2/-3-3
Installation conditions
– Upright mounting position
– Installation altitude up to 1000 m above sea level
– M6 bolt mounting using a bracket
– Rooms with outdoor climatic conditions according to DIN 50010
– Ambient temperature –25 C to +40 C
– Storage temperature –25 C to +60 C
Siemens AG 2003 All rights reserved
SIMODRIVE POSMO A User Manual (POS1) – 08.03 Edition
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