DF56 – Power Supply for Backplane 20 – 30 Vdc
5
smar
+5VDC
DF56
+24VDC
DC LINE
See
manual
D
C
Pow
er
Su
pply
f
or
Bac
kp
lane
1B
2B
3B
4B
5B
6B
7B
FUSE
2.5A
20-30VDC
Max. 42W
6W
30VDC Max.
200mA Max.
OUTPUT
24VDC
300mA
DC Po
we
r
S
upp
ly fo
r
B
a
ck
pl
an
e
DC-
R/56
Air convection
do not obstruct
air flow!
Fail
V
BRN04
Operating Range
-10ºC 60ºC
14ºF 140ºF
to
to
DC Power Supply: DF56
Technical Specifications
INPUTS
DC
20 to 30 Vdc
Inrush Current
< 20.6 A @ 30 Vdc [
Δ
T < 430 us]
Maximum Consumption
42 W
Indicator
DC LINE (Green LED)
OUTPUTS
a) Output1 (Internal Use)
5.2 Vdc +/- 2%
Current
3 A Maximum
Ripple
100 mVpp Maximum
Indicator
+5 Vdc (Green LED)
Hold up Time
> 47 ms @ 24 Vdc [Full Load]
b) Output 2 (External Use)
24 Vdc +/- 10%
Current
300 mA Maximum
Ripple
200 mVpp Maximum
Indicator
+24 Vdc (Green LED)
Short Circuit Current
700 mA
ISOLATION
Input signal, internal outputs and the external output are isolated between them.
Between Outputs and Ground
500 Vrms
Between Input and Output
1500 Vrms
FAILURE RELAY
Type of Output
Solid state relay, normally closed (NC), isolated
Limits
6 W, 30 Vdc Max, 200 mA Max
Maximum Initial Contact Resistance
<13
Ω
Overload Protection
Should be provided externally.
Operation Time
5 ms maximum
