SIMATIC S7-1200
Power supplies
SIMATIC S7-1200 PM 1207
4/110
Siemens ST 70 · 2011
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Overview
The power supply PM1207 (Power Module) is optimized for the
new SIMATIC S7-1200 controllers in terms of design and
functionality and serves as an external supply for the inputs and
outputs which, to prevent an imbalance, must not be drawn from
the CPU encoder supply.
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Technical specifications
Power supply, type 2.5 A
Order number 6EP1 332-1SH71
1)
Input
Rated voltage value U
in rated
120/230 V AC
Automatic range switchover
Voltage range 85 ... 132 V/176 ... 264 V
Overvoltage strength 2.3 x U
in rated
, 1.3 ms
Mains buffering at I
out rated
>20ms at U
in
= 93/187 V
Rated line frequency, rated line-
frequency range
50/60 Hz; 47 ... 63 Hz
Rated current I
in rated
1.2/0.67 A
Switch-on current limitation (+25 °C) <13A, <3ms (U
in
= 230 V)
I
2
t < 0.5 A
2
s
Built-in incoming fuse
T 3.15 A/250 V (not accessible)
Recommended miniature circuit
breaker (IEC 898) in the mains
power input
16 A, characteristic B; 10 A,
characteristic C
Output Controlled, isolated DC voltage
Rated voltage U
out rated
24 V DC
Total tolerance ±3 %
• Static line smoothing Approx. ±0.1 %
• Static load smoothing Approx. ±0.2 %
Residual ripple < 150 mV
pp
Spikes (bandwidth: 20 MHz) < 240 mV
pp
Adjustment range -
Status indicator 24 V OK = green LED
On/Off behavior
No overshoot of U
out
(soft start)
Startup delay/voltage rise
< 2 (6) s at 230 (120) V/typ.
10 ms
Rated current I
out rated
2.5 A
Current range
• Up to +60 °C 0 ... 2.5 A
• Derating -
Dynamic overcurrent on
• Power-up on short-circuit Typ. 6 A for 100 ms
• Short-circuit during operation Typ. 6 A for 100 ms
Parallel switching for enhanced
performance
Yes, two units
Efficiency
Efficiency at U
out rated,
I
out rated
Approx. 83%
Power loss at U
out rated,
I
out rated
Approx. 12 W
Closed-loop control
Dyn. mains compensation
(U
in rated
±15%)
Typ. ±0.3 % U
out
Dynamic load smoothing
(I
out
: 50/100/50 %)
Typ. ±3% U
out
Load step settling time
• 50 to 100 % <5ms
• 100 to 50% <5ms
Protection and monitoring
Output overvoltage protection <33 V
Current limitation 2.65 A
Short-circuit protection Constant current characteristic
Sustained short-circuit current rms
value
-
Overload/short-circuit indicator -
Power supply, type 2.5 A
Order number 6EP1 332-1SH71
1)
© Siemens AG 2011
© Siemens AG 2011
(27 pagine)
(2 pagine)
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