SIEMENS
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Siemens KT 10.1 · 2016
8
SITOP in the SIMATIC Design
1-phase, 24 V DC (for S7-300 and ET200M)
■
Overview
The design and functionality of the SIMATIC PS 307 single-
phase load power supply (system and load current supply) with
automatic range switchover of the input voltage is an optimal
match to the SIMATIC S7-300 PLC. By means of the connecting
comb that is supplied with the system and load current supply,
the supply to the CPU is quickly established. It is also possible
to provide a 24 V supply to other S7-300 system components,
input/output circuits of the input/output modules and, if
necessary, the sensors and actuators. Comprehensive certifica-
tions, such as UL, ATEX or GL facilitate universal use (does not
apply to outdoor use).
■
Design
•
The system and load current supplies are screwed directly
onto the S7-300 standard mounting rail and can be mounted
directly to the left of the CPU (no installation clearance
required)
•
Diagnostic LED for indicating “Output voltage 24 V DC O.K."
•
ON/OFF switches (operation/stand-by) for possible swapping
of modules
•
Strain-relief assembly for input voltage connection cable
■
Function
•
Connection to all 1-phase 50/60 Hz networks (120 / 230 V AC)
through automatic range switching (PS307) or manual
switching (PS307, outdoor)
•
Short-term power failure backup
•
Output voltage 24 V DC, stabilized, short circuit-proof,
open circuit-proof
•
Parallel connection of two power supplies for enhanced
performancee
■
Technical specifications
Article number
6ES7307-1BA01-0AA0
6ES7305-1BA80-0AA0
Product
PS 307
PS 305 Outdoor
Power supply, type
24 V/2 A
24 V/2 A
Input
Input
1-phase AC
DC voltage
Supply voltage
• 1 at AC Rated value
120 V
-
• 2 at AC Rated value
230 V
-
• at DC
-
24 ... 110 V
• Note
Automatic range selection
-
Input voltage
• 1 at AC
85 ... 132 V
-
• 2 at AC
170 ... 264 V
-
• at DC
-
16.8 ... 138 V
Wide-range input
No
Yes
Overvoltage resistance
2.3 ×
V
in rated
, 1.3 ms
154 V; 0.1 s
Mains buffering at
I
out rated
, min.
20 ms; at
V
in
= 93/187 V
10 ms; at
V
in rated
Rated line frequency 1
50 Hz
-
Rated line frequency 2
60 Hz
-
Rated line range
47 ... 63 Hz
-
Input current
• at rated input voltage 120 V
0.9 A
-
• at rated input voltage 230 V
0.5 A
-
• at rated input voltage 24 V
-
2.4 A
• at rated input voltage 110 V
-
0.6 A
Switch-on current limiting (+25 °C), max.
22 A
20 A
Duration of inrush current limiting at 25 °C
• maximum
3 ms
10 ms
I²t, max.
1 A²·s
5 A²·s
Built-in incoming fuse
T 1.6 A/250 V
(not accessible)
T 6.3 A/250 V
(not accessible)
Protection in the mains power input (IEC 898)
Recommended miniature circuit breaker:
from 3 A characteristic C
Recommended miniature circuit breaker:
from 10 A characteristic C, suitable for DC
© Siemens AG 2016