MEAN WELL DR-RDN20 20A Power Supply Redundancy Module Instructions

June 12, 2024
MEAN WELL

MEAN WELL DR-RDN20 20A Power Supply Redundancy Module

MEAN-WELL-DR-RDN20-20A-Power-Supply-Redundancy-Module-
PRODUCT

Product Information

  • Product Name: 20A Power Supply Redundancy Module

  • Model: DR-RDN20

  • Specifications:

    • Reverse Voltage (max.): 30V

    • Output Current (max.): 20A

    • Voltage Drop: 0.6V

    • LED Indicators: Two green LEDs indicating each input is OK or fail

    • Input Voltage Range: 21 ~ 28V

    • Number of Inputs: Two

    • Input Current (max.): 20A per input

    • Function Input Voltage Alarm

    • Relay Contact Rating (max.): 30VDC, 1A

    • Working Temperature: -40°C ~ +70°C

    • Working Humidity: 20 ~ 90% RH non-condensing

    • Storage Temperature, Humidity: -40°C ~ +85°C, 10 ~ 95% RH

    • Vibration: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each
      along X, Y, and Z axes; Mounting: Compliance to IEC60068-2-6

    • Safety Standards: UL508, AS/NZS 62368.1, EAC TP TC 00 approved

    • Safety & Withstand Voltage EMC: Terminal-Chassis: 0.5KVAC, Relay Contacts-Terminal: 0.5KVAC

    • Isolation Resistance: Terminal-Chassis: >100M Ohms / 500VDC / 25/ 70% RH

    • EMC Emission: Compliance to EN55032 (CISPR32) Class B,EN61000-3-2,-3, EAC TP TC 020

    •  EMC Immunity: Compliance to EN61000-4-2,3,4,5,6,8,11, heavy industry level, EAC TP TC 020

    • MTBF: 2315.6K hrs min. Telcordia SR-332 (Bellcore); 996.9K hrs min. MIL-HDBK-217F (25)

    • Dimensions: 55.5125.2100mm (WHD)

    • Packing: 0.5Kg; 20pcs/11Kg/1.49CUFT

Product Usage Instructions
The 20A Power Supply Redundancy Module can be used in various configurations to enhance the reliability of the power supply system. Here are some typical application notes:

Redundancy Using 1 more PSU as the redundant unit
In this configuration, you can connect an additional power supply unit (PSU) as a redundant unit to the DR-RDN20 module. The DR-RDN20 module will monitor the inputs from both PSUs and ensure
continuous power supply in case one PSU fails.

Redundancy: Using more PSUs as redundant units to increase reliability In this configuration, you can connect multiple PSUs as redundant units to the DR-RDN20 module. This setup increases the
reliability of the power supply system by providing backup power from multiple sources.

Single Use: Connecting only one PSU to one DR-RDN20 to reduce stress and increase reliability In this configuration, you can connect a single PSU to one DR-RDN20 module. This setup reduces the stress on the diodes and improves the overall reliability of the power supply system. Please refer to the product manual for detailed instructions on connecting and configuring the 20A Power Supply Redundancy Module in your specific application.

GTIN CODE
MW Search: https://www.meanwell.com/serviceGTIN.aspr

Features

  • Suitable for redundant operation of 24V system
  • Installed on DIN Rail TS35 / 7.5 or 15
  • Relay contact signal output and LED indicator for input failure alarm
  • Cooling by free air convection
  • 3 years warranty

SPECIFICATION

MODEL DR-RDN20

OUTPUT

| REVERSE VOLTAGE (max.)| 30V
OUTPUT CURRENT (max.)| 20A
VOLTAGE DROP| 0.6V
LED INDICATORS| Two green LEDs indicating each input is “OK or fail”


INPUT

| INPUT VOLTAGE RANGE| 21 ~ 28V
NUMBER OF INPUTS| Two
INPUT CURRENT (max.)| 20A per input
FUNCTION| INPUT VOLTAGE ALARM| When input is > 20V(±5%) or < 30V(±5%) relay contacts
RELAY CONTACT RATING (max.)| 30VDC, 1A


ENVIRONMENT

| WORKING TEMP.| -40 ~ +70℃
WORKING HUMIDITY| 20 ~ 90% RH non condensing
STORAGE TEMP., HUMIDITY| -40 ~ +85℃, 10 ~ 95% RH
VIBRATION| 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes ; Mouning: Compliance to IEC60068-2-6


SAFETY & EMC

(Note 2)

| SAFETY STANDARDS| UL508, AS/NZS 62368.1, EAC TP TC 004 approved
WITHSTAND VOLTAGE| Terminal-Chassis :0.5KVAC, Relay Contacts-Terminal :0.5KVAC
ISOLATION RESISTANCE| Terminal-Chassis :>100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION| Compliance to EN55032 (CISPR32) Class B, EN61000-3-2,-3, EAC TP TC 020
EMC IMMUNITY| Compliance to EN61000-4-2,3,4,5,6,8,11, heavy industry level, EAC TP TC 020


OTHERS

| MTBF| 2315.6K hrs min.      Telcordia SR-332 (Bellcore) ; 996.9K hrs min.      MIL-HDBK-217F (25℃)
DIMENSION| 55.5125.2100mm (WHD)
PACKING| 0.5Kg; 20pcs/11Kg/1.49CUFT
NOTE|

  1. All parameters NOT specially mentioned are measured at 24VDC input, rated load, and 25 °C of ambient temperature.

  2. The power supply is considered a component that will be installed into the final equipment. All the MC tests are been executed by mounting the unit on a 360mm 360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets MC directives. For guidance on how to
    To perform these MC tests, please refer to “EMI testing of component power supplies.” (as available on http://www.meanwell.com)

  3. The ambient temperature derating of 3.5°C/1000m with fanless models and of 5°C/1000m with fan models for operating altitude higher than 2000m(6500ft Product Liability Disclaimer: For detailed information. Please refer to www.meanwell.com/serviceDisclaimer.aspx

Typical Application Notes

MEAN-WELL-DR-RDN20-20A-Power-Supply-Redundancy-Module-
FIG-1

  1. Redundancy Using 1 more PSil as the redundant unit
  2. Redundancy: Using more PSUs as the redundant units to increase the reliability
  3. Single Use: Connecting only one PSU to one DR-RDN20 to reduce the stress of the diodes and hence increase the reliability

Mechanical Specification

MEAN-WELL-DR-RDN20-20A-Power-Supply-Redundancy-Module-
FIG-3

Block Diagram

MEAN-WELL-DR-RDN20-20A-Power-Supply-Redundancy-Module-
FIG-4

Derating Curve

MEAN-WELL-DR-RDN20-20A-Power-Supply-Redundancy-Module-
FIG-5

File Name: DR-RDN20-SPEC 2022-02-28

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