Data Sheet

QS20.241, QS20.241-A1, QS20.241-C1
Q-Series
24V, 20A, SINGLE PHASE INPUT
21.3. YR40 REDUNDANCY MODULES
YR40.242 – (2x 20A Inputs, 1x 40A output)
The YR40.242 is equipped with two input channels, which are individually decoupled by
utilizing mosfet technology. Using mosfets instead of diodes reduces the heat generation and
the voltage drop between input and output. The YR40.242 does not require an additional
auxiliary voltage and is self-powered even in case of a short circuit across the output.
Due to the low power losses, the unit is very slender and only requires 46mm width on the
DIN-rail.
YR40.245 – (1x 40A input, 1x 40A output)
The YR40.245 is a 40A single channel redundancy module, which is equipped with a plug
connector on the output. The plug connector allows replacing the power supply or the
redundancy module while the system is running. The plug connector avoids that the output
wires can touch and short the load circuit.
The YR40.245 is very slender and only requires 46mm width on the DIN-rail. It also utilizes
mosfet technology instead of diodes for low heat generation and a minimal voltage drop
between input and output. It does not require an additional auxiliary voltage and is self-
powered even in case of a short circuit across the output.
Fig. 21-1 Typical 1+1 Redundant configuration
for 20A with a dual redundancy module
Fig. 21-2 Typical N+1 or 1+1 Redundant configuration for 20A with
multiple YR40.245 redundancy modules
24V
20A
Load
L
N
PE
Failure
Monitor
YR40.242
*)
Redundancy
Module
Input
1
Input
2
Output
+
-
+
-
+
-
I I
*)
YR40.241
also possible
+ +
- -
QS20.241
Power
Supply
24V,20A
DC-
OK
L N PE
+ +
- -
QS20.241
Power
Supply
24V,20A
DC-
OK
L N PE
YR40.245
Redundancy
Module
+ -
Input
Output
+ -
YR40.245
Redundancy
Module
+ -
Input
Output
+ -
L
N
PE
I
I
24V
20A
Load
Failure
Monitor
+ +
- -
QS20.241
Power
Supply
24V,20A
DC-
OK
L N PE
+ +
- -
QS20.241
Power
Supply
24V,20A
DC-
OK
L N PE
Oct. 2013 / Rev. 2.2 DS-QS20.241-EN
All parameters are specified at 24V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone [phone] Germany
20/26