Siemens S7-400 User Manual
Power Supply Modules
3-41
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
A5E00069467-07
Technical Specifications of the PS 405 20 A
Dimensions, Weight, and Cable Cross-Sections
Dimensions WxHxD (mm)
Weight
75x290x217
2 2 kg
Weight
Cable cross-section
2.2 kg
3x1.5 mm
2
(litz wire
ith i d
f
l
(
with wire end ferrule;
use component
use component
d
t
fl
ibl
p
conductor or flexible
sheath cable)
sheath cable)
Cable diameter
3 to 9 mm
Input Rating
Input voltage
•
Rated value
•
Permitted range
24/48/60 VDC
Static:
19.2 VDC to 72 VDC
19.2 VDC to 72 VDC
Dynamic:
18.5 VDC to 75.5 VDC
18.5 VDC to 75.5 VDC
Rated input current
7.3 A/3.45 A/2.75 A
Starting current inrush
Peak value 56 A
half-value width 1.5 ms
half-value width 1.5 ms
Overvoltage resistance
In accordance with DIN
VDE 0160, curve B2
VDE 0160, curve B2
Output Rating
Output voltages
•
Rated values
5.1 VDC/24 VDC
Output currents
•
Rated values
5 VDC: 20 A
24 VDC: 1.0 A
Max. residual ripple
5 VDC: 50 mV
SS
24 VDC: 200 mV
SS
Max. switching peaks
5 VDC: 150 mV
S
24 VDC: 500 mV
S
Idle conditions
5 VDC: 200 mA base
load required
load required
24 VDC: Idling-proof
(no base load required)
(no base load required)
Other Parameters
Protection class in accordance
with IEC 60536
with IEC 60536
I, with protective
grounding conductor
grounding conductor
Overvoltage category
II
Pollution severity
2
Rated voltage U
e
0 < U
e
≤
50 V
150 V < U
e
≤
300 V
Test Voltage
700 VDC
(secondary <–> PE)
(secondary <–> PE)
2300 VDC
(primary <–> PE)
(primary <–> PE)
Buffering of power failures:
> 20 ms
Complies with the
NAMUR
recommendation NE
21 of August 1998 at a
repeat rate of 1 s
Complies with the
NAMUR
recommendation NE
21 of August 1998 at a
repeat rate of 1 s
Power input
175 W
Power loss
51 W
Backup current
Max. 100
µ
A at power
off
Backup batteries (optional)
2 x Lithium AA, 3.6 V /
1.9 Ah
1.9 Ah
Protective separation
to IEC 61131-2
to IEC 61131-2
Yes