15 Accessories
15.2 Electrical connection
15.2 Electrical connection
15.2.1
Different voltage
The electronic unit operates with a power supply of 24 V DC. If a deviating voltage is available in the
system, a suitable power supply unit can be used.
15.2.2
Rack mounting power supply unit EEN 12
Fig. 4: Rack mounting power supply unit EEN 12
Component
Parameter
Unit
Value
Input
Input voltage
[V AC]
[Hz]
[V DC]
o
100 – 240 (tolerance: 93 – 265)
o
47 – 63
o
135 – 370
Starting current inrush
max.
[V AC]
o
30 (at 230 V AC)
o
15 (at 115 V AC) max. limited by NTC,
in heated state higher
Overvoltage protection at
the input
Varistor
Fuse
Internal fuse T4A 250 V, additional external
fuse not required
Current consumption
[A typ.]
o
0.25 (at 230 V AC)
o
0.5 (at 115 V AC)
Output
Output voltage
[V DC] 24
Output current max.
[mA]
850
Output power
[W]
20
Function display
LED at front panel
Current limitation
Fold-back, set to approx. 1.05 x I
nom
System deviation at load
change stat. 10 – 90 %
[%]
0.1
System deviation at load
change dyn. 10 – 90 %
[%]
1.0
Adjusting time
[ms]
1
System deviation at input
change ±10 %
[%]
0.1
Mains buffering
[ms]
> 20
Residual ripple
[mVss] <50
Switching peaks
[mVss] <100
Overvoltage protection at
the output
Suppressor diode (Transil diode)
44
OIE 12en-GB Edition 2020-03
Operating instructions