TECHNICAL DATASHEET

PMC Panel Mount Power Supply

48V 150W 1 Phase / PMC-48V150W1B

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All parameters are specified at 25°C ambient unless otherwise noted.

www.DeltaPSU.com (July 2013, Rev. 00)

10

Operating Mode



Redundancy Operation

In order to ensure proper redundancy operation for the power supply unit (PSU), ensure that the output voltage difference between the

two units is kept at 0.90~1.00V for 48V supplies. Follow simple steps given below to verify:

Step 1.

the output voltage, connect the power supply to 50% load and set the PSU 1 and PSU 2 output voltage.

Step 2.

respectively.

Step 3.



Parallel Operation

These DRR modules can also be used for Parallel function in order to increase the output power by N+1 (e.g. 2.5A + 2.5A = 5A or 2.5A

+ 2.5A + 2.5A = 7.5A) or current sharing, and thus increasing the power supply and system reliability. Though the

PMC-48V150W1B☐ is not designed for current sharing, a good current sharing between two power supplies can be achieved by

following simple steps as below (Refer to Fig. 3 for the Connection Diagram).

Fig. 3

Redundancy / Parallel Operation Connection Diagram

Step 1.

Set output load condition for both supplies at 50% and measure

the output voltages.

Step 2.

Adjust output voltages to the same level or within ±25mV

difference.

Step 3.

Connect PSU 1 and PSU 2 with the DRR-20A module and

the voltages are within ±25mV.

Step 4.