DRP024V120W1BA Datasheet, PDF (11/12 Pages) Delta Electronics, Inc. – CliQ II DIN Rail Power Supply

TECHNICAL DATASHEET
CliQ II DIN Rail Power Supply
24V 120W 1 Phase / DRP024V120W1B□
Over Temperature Protection
As mentioned above, the power supply also has Over Temperature
Protection (OTP). This is activated when the overload condition
persists for an extended duration and the output current is below
the overload trigger point but >100% load. In the event of a higher
operating condition at 100% load, the power supply will run into
OTP when the surrounding air temperature is >80°C. When
activated, the output voltage will go into bouncing mode until the
operating surrounding air temperature drops to 50°C or output
capacity is reduced as recommended in the derating graph.
Short Circuit Protection
The power supply’s output OLP/OCP function also provides
protection against short circuits. When a short circuit is applied,
the output current will operate in “Hiccup mode”, as shown in the
illustration in the OLP/OCP section on this page. The power
supply will return to normal operation after the short circuit is
removed.
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 0.450~0.50V for 24V supplies. Follow
simple steps given below to verify:
Step 1.
Measure output voltage of PSU 1 and
PSU 2. If PSU 1 is the master unit, then
Vo of PSU 1 must be higher than PSU 2.
In order to set the output voltage, connect
the power supply to 50% load and set the
PSU 1 and PSU 2 output voltage.
Fig. 3.1 Redundancy / Parallel Operation Connection Diagram
Step 2.
Connect the right DRR module, 20A as
per the system requirement to the power
supply units PSU 1 and PSU 2 at Vin 1 &
Vin 2 respectively.
*Vdrop will vary from 0.60V to 0.90V (Typical 0.65V) depending on the load current
and surrounding air temperature.
Step 3.
Connect the system load from Vout.
Please note that output voltage Vout from
DRR module will be = VO (output voltage
of power supply) – Vdrop* (in DRR
module).
 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 DRP024V060W1BA
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. 4.1 for the Connection Diagram).
Step 1.
Set output load condition for both supplies at 50% and measure
the output voltages.
Step 3.
Connect PSU 1 and PSU 2 with the DRR-20A module and
measure at Vin 1 & Vin 2 to verify the voltage difference. Ensure
the voltages are within ±25mV.
Step 2.
Adjust output voltages to the same level or within ±25mV
difference.
Step 4.
Output voltage from DRR module Vout will be = VO (output
voltage of power supply) – Vdrop* (in DRR module).
*Vdrop will vary from 0.60V to 0.90V (Typical 0.65V) depending on the load current and surrounding air temperature.
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All parameters are specified at 25°C ambient unless otherwise noted.
www.DeltaPSU.com (September 2013, Rev. 03)