UC10.241, UC10.242
UC-Series
24V,
15A,
CAPACITOR-BASED
DC-UPS
23.4.
P
ARALLEL
U
SE FOR
R
EDUNDANCY
Two DC-UPSs can be paralleled to build a 1+1 redundant system to gain higher system reliability.
Recommendations for building redundant power systems:
a)
Use separate input fuses for each
power supply.
b)
Set the power supply into “Parallel use” mode if available.
c)
Use a redundancy module to decouple the two power sources.
d)
Monitor the individual sources. Therefore, use the alarm contacts of the YRM2.DIODE redundancy module.
(The YRM2.DIODE is suitable for a 10A redundant system)
e)
It is desirable to set the output voltages of all power supplies to the same value (± 100mV) or leave it at the
factory setting.
Fig. 23-2
Wiring example for a fully redundant system,
redundant power supplies and redundant DC-UPSs
+ +
- -
Power
Supply
24V Output
+ +
- -
Power
Supply
24V Output
Load
+
-
Failure
Monitor
YRM2.DIODE
+
-
OUT
+
-
IN 1
+
-
IN 2 IN 1 IN 2
23/27
Ready
Buffering
Inhibit
UC10
DC-UPS
IN
OUT
+
+
-
-
Inhibit
+
-
R
ead
y
Buf
fe
ri
ng
P
C
M
ode
UC10
DC-UPS
IN
OUT
+
+
-
-
Inhibit
+
-
R
ead
y
Buf
fe
ri
ng
P
C
M
ode
23.5.
P
ARALLEL
U
SE FOR
L
ONGER
B
UFFER
T
IMES
DC-UPSs can be paralleled to extend the buffer time.
Fig. 23-3
Wiring example for parallel use for longer buffer times
+ +
- -
Power
24V Output
Supply
Load
+
-
Ready
Buffering
Inhibit
UC10
UC10
UC10
DC-UPS
IN
OUT
+
+
-
-
DC-UPS
IN
OUT
+
+
-
-
DC-UPS
IN
OUT
+
+
-
-
Inhibi
t
+
-
Re
a
dy
Bu
ff
e
ri
ng
Inhibi
t
+
-
Re
a
dy
Bu
ff
e
ri
ng
Inhibi
t
+
-
Re
a
dy
Bu
ff
e
ri
ng
P
C Mode
P
C Mode
P
C Mode
May 2016 / Rev. 2.2 DS-UC10.241-EN
All parameters are specified at 24V, 10A output current, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
