Siemens SIMATIC S5-115U, User Manual

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S5-115U Manual Technical Specifications
15.2.2 Power Supply Modules
Power Supply Module PS 951 120/230 V AC; 5 V, 3 A (6ES5 951-7LB21)
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SIEMENS
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SIMATIC S5
PS
3A
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EXT BATT
3.4...9V
BATT LOW
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RESET
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5V DC
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5.2V DC
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24V DC
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INT DC
POWER
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VOLTAGE
SELECTOR
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L1
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N
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120/230V AC
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BATT LOW
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Battery
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PE
4
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RESET
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5 V
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5.2 V
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24 V
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EXT. BATT
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L1
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N
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5 V
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5.2 V
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24 V
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Signals to CPU
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M
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INT. DC POWER
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7
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1 Chopper controller 4 Control electronics
2 Linear controller 5 Rectifier
3 Linear controller 6 Radio interference suppression filter
7 Monitoring electronics
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Batt.
3.4V/5Ah
Replace by
trained
personnel
only!
Technical specifications
Input voltage L1
- Rated value
120/230 V AC
- Permissible range 94 to 132 V/
187 to 264 V
Line frequency
- Rated value
50 Hz
- Permissible range 47 to 63 Hz
Input current at 120/230 V
- Rated value
0.55/0.33 A
- Inrush current max. 15×I
N
- I
2
t 0.135 A
2
s
Power consumption (active power) 44.8 W
Output voltage
- Rated value
5 V
- Tolerance ±1.5%
Output current
- Rated value without fan
3 A
- Rated value with fan 3 A
- Permissible range 0.3 A to 3 A
Output voltage (PG/OP)
- Rated value
5.2 V
- Tolerance ±1.5%
Output current max. 1 A
Output voltage (auxiliary voltage)
- Rated value
24 V
- Tolerance ±5%
Output current max. 0.2 A
Backup battery Lithium battery,
size C (3.6 V/5 Ah)
- Backup time min. 1 year (at 0.3 mA,
25°C and
uninterrupted
backup)
Mains buffering
(at L1
min
) min. 20 ms
Short-circuit protection Electronic
Fault indicator No
Fuse (primary circuit) Integral
Class of protection Class 1
Galvanic isolation Yes
Isolation rating Safe electrical
isolation
according to VDE
0160
- Tested with 2700 V DC
Initial discharge current
to VDE 0160 at 230 V AC
2.6 mA
RI specifications A according to
VDE 0871
Power losses of the module typ. 19.8 W
Weight approx. 1.6 kg (3.53 lb.)
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Block diagram
EWA 4NEB 811 6130-02b
15-9