Siemens SIMATIC S5-115U, Руководство пользователя

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S5-115U Manual Technical Specifications
Power Supply Module PS 951 24 V DC; 5 V, 7/15 A (6ES5 951-7ND41)
Technical specifications
Input voltage L+
- Rated value
24 V DC
- Permissible range 19.2 to 30 V
Input current at 24 V
- Rated value
5.6 A
- Inrush current max. 15×I
N
- I
2
t 4.5 A
2
s
Power consumption 134.4 W
Output voltage
- Rated value
5 V
- Tolerance ±1.5%
Output current
- Rated value without fan
7 A
- Rated value with fan 15 A
- Permissible range 0.3 to 15 A
Output voltage (PG/OP)
- Rated value
5.2 V
- Tolerance ±1.5%
Output current max. 2.5 A
Backup battery 2 lithium
batteries, size AA
(3.6 V/2 x 1.75 Ah)
- Backup time min. 1 year (at 0.3 mA,
25°C and
uninterrupted
backup)
Mains buffering
(at L+
min
) min. 20 ms
Output voltage (auxiliary voltage)
- Rated value
24 V
- Tolerance ±5%
Output current max. 0.35 A
Short-circuit protection Electronic
Fault indicator No
Fuse (primary circuit) Integral
Class of protection Class 1
Galvanic Yes
Isolation rating Safe electrical
isolation
according to
VDE 0160
- Tested with 2700 V DC
RI specifications A according to
VDE 0871
Power losses of the module typ. 38 W
Weight approx. 1.7 kg (3.75 lb.)
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Block diagram
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SIEMENS
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SIMATIC S5
PS
7A/15A
EXT BATT
3.4...9V
BATT LOW
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a a a a a a
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
a a a
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a a a
+
a a a
a a a
a a a
-
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a a a a a
a a a a a
L+
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M
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24 V DC
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BATT LOW
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Battery
a a a
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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
a a
a a
a a
L
a a a
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M
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5 V
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a a a a a a
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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1
a a
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4
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2
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3
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5
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6
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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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BATT1-BATT2
3.4V/2Ah
Replace by
trained
personnel
only!
EWA 4NEB 811 6130-02b
15-13