MEAN WELL DRDN20 20A DIN Rail Type Redundancy Module Owner's Manual

The DRDN20 series is a 20A redundancy module that can be used with a power supply to improve overall system operation reliability. Product key features include: 12V/24V/48V input voltage for selection, support N+1 and 1+1 redundancy systems, built-in two rails DC input contacts and single output. The MOSFET technology implemented can reduce heat loss and reduce the voltage difference between the input and output voltages, built-in 2 channels DC OK relay contacts for monitoring output status, ultra-wide operating temperature of -40 to +80°C and narrow width (32mm.

Model Encoding

SPECIFICATION

MODEL		DRDN20-
		=12V, 24V, 48V
INPUT	NUMBER OF INPUT	2 Channels
	DC NORMAL VOLTAGE	12Vdc	24Vdc			48Vdc
	DC VOLTAGE RANGE	9~14Vdc	19~29Vdc			36~60Vdc
	RATED CURRENT	0~20A per input Continuous
	VOLTAGE DROP (Vin-Vout) (max.)	0.25V
	PEAK CURRENT	0~30A per input 5Sec.
	EFFICIENCY (Typ.)	98%
	INPUT REVERSE CURRENT (max.)	1mA
	INPUT REVERSE VOLTAGE (max.)	40Vdc	40Vdc			65Vdc
OUTPUT	RATED CURRENT	0~20A, Continuous
	PEAK CURRENT (max.)	30A, 5Sec.
	CAPACITANCE(Typ.)	320uF
	STANDBY POWER LOSSES(Typ.)	1.5W
PROTECTION	OVERLOAD	<30A,5Sec. No damage
	SHORT CIRCUIT	<30A,5Sec. No damage
FUNCTION	REDUNDANCY	For 1+1 redundancy ,and support N+1 redundancy
	BOTH INPUTS VOLTAGE ALARM	<8.5V or >14.7V (±5%)	<18V or >31V (±5%)			<34.2V or >63V (±5%)
	RELAY	30Vdc/1A resistive load
	LED STATUS DISPLAY	Green LED OK
ENVIRONMENT	COOLING	Free air convection
	WORKING TEMP. Note.2	-40 ~ +80℃ (Refer to “Derating Curve”)
	WORKING HUMIDITY	5 ~ 95% RH non-condensing
	STORAGE TEMP.	-40 ~ +85℃
	TEMP. COEFFICIENT	±0.03%/℃ (0 ~ 60℃)
	VIBRATION	Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373
	OPERATING ALTITUDE Note.3	5000 meters/OVC II
SAFETY & EMC(Note.4)	SAFETY STANDARDS	IEC62368-1, UL62368-1, EAC TP TC 004 approved
	WITHSTAND VOLTAGE	IP/OP – Chassis : 0.5KVac ; IP/OP- Relay : 0.5KVac ; Relay – Chassis : 0.5KVac
	ISOLATION RESISTANCE	IP/OP – Chassis, IP/OP- Relay, Relay – Chassis:>100M Ohms / 500Vdc / 25℃/ 70% RH
	EMC EMISSION	Parameter		Standard	Test Level / Note
		Conducted		BS EN/EN55032(CISPR32)	Class B
		Radiated		BS EN/EN55032(CISPR32)	Class B
		Voltage Flicker		—–	—–
		Harmonic Current		—–	—–
	EMC IMMUNITY	BS EN/EN55035, BS EN/EN61000-6-2(BS EN/EN50082-2)
		Parameter		Standard	Test Level / Note
		ESD		BS EN/EN61000-4-2	Level 4, 15KV air ; Level 3, 8KV contact; criteria A
		Radiated		BS EN/EN61000-4-3	Level 3, 10V/m ; criteria A
		EFT / Burst		BS EN/EN61000-4-4	Level 3, 2KV ; criteria A
		Surge		BS EN/EN61000-4-5	Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-Chassis ;criteria A
		Conducted		BS EN/EN61000-4-6	Level 3, 10V ; criteria A
		Magnetic Field		BS EN/EN61000-4-8	Level 4, 30A/m ; criteria A
OTHERS	MTBF	1836.0K hrs min. Telcordia SR-332 (Bellcore) ; 482.1K hrs min. MIL-HDBK-217F (25℃)
	DIMENSION	32125.2102mm (WHD)
	PACKING	0.35Kg;28psc/10.8Kg/1.24CUFT
NOTE	1. All parameters NOT specially mentioned are measured at normal input (12V/24V/48V), rated load and 25℃ of ambient temperature.2. Derating may be needed over high ambient temperature. Please check the derating curve for more details.3. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).4. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMl testing of component power supplies.”(as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )※ Product Liability Disclaimer：For detailed information, please refer to https://www.meanwell.com/serviceDisclaimer.aspx

Block Diagram

DC OK Relay Contact

Contact Ratings (max.)	30V/1A resistive load
Contact Close(DC OK)	PSU turns on
Contact Open(DC Fail)	PSU turns off / over or under input voltage

Derating Curve

Output Derating VS Input Voltage

Typical Application Notes

1+1 Redundancy:
Using 1 more PSU as the redundant unit

1+N Redundancy:
Using more PSUs as the redundant units to increase the reliability

Single Use:

Connecting only one PSU to one DRDN20 to reduce the stress of the and hence increase the reliability

Mechanical Specification

Side View
Top View

Front View
Side View

Bottom View

Terminal Pin No. Assignment (TB3

Pin No.	Assignment
1,2	Alarm1 DC OK
3,4	Alarm2 DC OK
5	FG
6,7	DC output +Vout
8	DC output -Vout

Installation Instruction

ADMISSIBLE DIN-RAIL:TS35/7.5 OR TS35/15
(For reference only. Not included with unit.)

Back View

This series fits DIN rail TS35/7.5 or TS35/15.
For installation details, please refer to the Instruction manual

Installation Manual

Please refer to : http://www.meanwell.com/manual.html

Documents / Resources

MEAN WELL DRDN20 20A DIN Rail Type Redundancy Module [pdf] Owner's Manual
DRDN20, DRDN20 20A DIN Rail Type Redundancy Module, 20A DIN Rail Type Redundancy Module, DIN Rail Type Redundancy Module, Type Redundancy Module, Redundancy Module, Module

References

User Manual

Features

Applications

Description