CP20.241-R1, CP20.241-R2, CP20.241-R3,

CP20.242-R2, CP20.242-R2-C1

CP-Series

Jan. 2018 / Rev. 0.2 DS-CP20.241-R2-EN - All parameters are typical values specified at 230Vac, 50Hz input voltage, 24V, 20A output

load, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

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P R E L I M I N A R Y

Power supplies can be paralleled for redundancy to gain higher system availability. The unit is already equipped with a

MOSFET as decoupling device on the output to avoid, that a faulty unit becomes a load for the other power supplies

and the output voltage cannot be maintained any more.

Recommendations for building redundant power systems:

a)

Use separate input fuses for each power supply.

b)

Monitor the individual power supply units by utilizing the built-in DC-OK relay contacts on each power supply.

Fig. 24-8 Wiring diagram, 1+1 Redundancy for 20A output current

24V, 20A

Load

Failure

Monitor

L

N

PE

I

I

L N PE

+

-

CP20.241-Rx

Power Supply

DC-OK

DC-

OK

Output 24V 20A

Input

L N PE

+

-

CP20.241-Rx

Power Supply

DC-OK

DC-

OK

Output 24V 20A

Input

Note: Use separate mains systems for each power supply whenever it is possible

Fig. 24-9 Wiring diagram, N+1 Redundancy for 40A output current

24V, 40A

Load

Failure

Monitor

L

N

PE

L N PE

+

-

CP20.241-Rx

Power Supply

DC-OK

DC-

OK

Output 24V 20A

Input

I

I

I

L N PE

+

-

CP20.241-Rx

Power Supply

DC-OK

DC-

OK

Output 24V 20A

Input

L N PE

+

-

CP20.241-Rx

Power Supply

DC-OK

DC-

OK

Output 24V 20A

Input

Note: Use separate mains systems for each power supply whenever it is possible.

Observe the

temperature derating

requirements of Fig. 24-6

and Fig. 24-7 for n+1

redundancy applications.