Siemens S5-135U/155U - Manual (Page 135)

4-69
System Manual
C79000-G8576-C199-06
Output 2 (bus)
Rated output voltage V
o/p2
24 V DC +25% / -20%
Rated output current I
o/p2
0.8 A
Total current rating
24V-/ 15V output
v 0.8 A
Ripple Input voltage ripple
Protection and monitoring
Fuse for overcurrent protection
Test sockets for V
o/p2
– green LED 15V/24V o.k. for V
o/p2
(fuse monitor)
1.5 A fast; 250 V; 6.3 x 32 mm
on front plate (24 V test)
The LED lights up when V
o/p2
> 17.9 to 18.5 V
Output 2 (front)
Rated output voltage V
o/pN4
24 V DC +25% / -24%
Rated output current I
o/pN4
0.4 A
– Capacitive load < 100 nF
Protection and monitoring
Overcurrent protection by current limiting I
o/p4
Test sockets for V
o/p2
– green LED 24V o.k. for V
o/p4
> 0.44 A
on front plate (24 V test)
The LED lights up when V
o/p4
> 16 V
$ 20%
Total current rating of 24 V voltages (bus and front) must not exceed 0.8 A
Output 3 with 15 V auxiliary submodule
Rated output voltage V
o/pN3
15 V DC $ 5%
Rated output current I
o/pN3
0.5 A
Ripple v 5% of V
o/pN3
Protection and monitoring
Overvoltage protection (output is short-circuited
at V
o/p3
)
Undervoltage signal (LED 15V/24V o.k.
on front plate goes off at)
Overcurrent protection I
o/p3
by current limiting
Test socket for V
o/p3
w 18.5 V
v 14 V $ 3%
> 0.5 to 1.5 A
on front plate (15 V test)
Fans
Fan type 2 axial fans
Input voltage 24 V DC
Flow rate per fan 160 m3/h (no-load value)
Fan monitoring Air flow monitoring with PTC thermistors as sensors;
stoppage of one or both fans is detected and signaled to the
exterior via Fan Fault LED and relay contacts, and results
in shutdown of output voltage (switched off via jumper
F-R).
Expected service life of a fan 30 000 to 40 000 h typical at 55 o C;
40 000 to 50 000 h typical at 30 o C;
Isolation primary/sekondary
and test voltages No
Weight 3.75 kg
Environmental data See technical specifications of the S5-135U/155U CC
RFI suppression DIN VDE 0871, A
Central Controllers and Expansion Units Power Supply Units