Page 35 MEAN WELL INDUSTRIAL POWER SUPPLY CATALOG

DIN Series 20A & 40A Peripheral Module

20A Power Supply Redundancy Module 40A DC UPS Module
• Suitable for redundant operation • Relay contact signal output • Battery controller for DIN rail UPS • Battery polarity protection
of 24V system and LED indicator for input system • Relay contact signal output
• Installed on DIN rail TS-35 / 7.5 failure alarm • Parallel connected to DC BUS and LED indicator for DC BUS
OK, Battery Fail, and Battery
• Suitable for 24V system up to 40A
or 15 • Cooling by free air convection • Installed on DIN Rail TS-35 / 7.5 or 15 Discharge
• 3 years warranty • Built-in battery test function • Cooling by free air convection
• 3 years warranty

CASE: 923D 55.5x 125.2x 100 mm
DC input / DC bus ............. 24~29V, 40A max.
CASE: 923C 55.5x 125.2x 100 mm Battery input voltage ......... 21~29V
Battery input Current ......... 0~40A
DC input voltage range ....... 21~28V, 20A max. x 2 channels Charge current (typ.) ......... 2A
Reverse voltage ................ 30V External battery (typ.) ....... 24V, 4AH / 7AH / 12AH
DC bus ok ........................ Relay status : Short when DC voltage between
DC output current .............. 20A max. 21~29V(±3%), relay contacts
DC output voltage drop ...... 0.6V max. LED(Green) : DC bus OK : light;
DC bus fail : dark
Input voltage alarm ............ When input is > 20V(±5%) and <30V(±5%), relay contacts Battery fail ....................... Relay status : Short when battery failure is
Relay contact rating ........... 30VDC, 1A observed through the battery
test function, relay contacts
Working temperature .......... -40~+70°C LED(Red) : Battery over-discharge warning
Safety standard ................. UL508, EAC TP TC 004 approved or battery broken: light;
EMC standards .................. EN55032 class B, EN61000-4-2,3,4,5,6,8,11, Battery OK: dark
EAC TP TC 020 Battery discharge ............. Relay status : Short when battery in discharge
condition, relay contacts
Connection ........................ I/P: 4 poles, O/P: 2 poles screw DIN terminal, LED(Yellow) : Battery discharging: light;
Single output: 4 poles Battery is not discharging or
discharging current <2A: dark
Model No. Output Reverse Voltage Current Working temperature ......... -20~+70°C
EMC standards ..... EN55032 class B, EN61000-4-2,3,4,5,6,8,11, EAC TP TC 020
DR-RDN20 24V, 20A 30V max. 20A max. Connection ...................... I/P: 2 poles, O/P: 2 poles screw DIN terminal,
Single output: 6 poles
►►Feature Description Model No. DC BUS Voltage DC BUS Current
DR-RDN20 is a 20A redundancy (decoupling) module for DR-UPS40 24~29V 40A max.
the 24VDC power system. Containing 2 sets of 20A Or-ing Block Diagram
diodes with wonderful heat dissipation deployment,
DR-RDN20 offers a safe option of 1+1 redundant set-up. LOAD 25Ax2
Not only perfectly decouple power sources from each other + + 24V
BAT.
as well as from the load, DR-RDN-20 also provides users CHARGE TEST BATTERY
monitoring signals for both input channels through the POWER INPUT CIRCUIT
LIMIT
built-in relays. SUPPLY

DR-UPS40 is a 40A max. DC UPS (battery control) module DETECTION
CIRCUIT
for the 24VDC power system. Accompany with external DR-UPS40
batteries, it can back-up up to 40A of current to critical DC BAT BAT
loads for certain period of time depending on the capacity of OK FAIL DISCHARGE
batteries. With complete monitoring signals / LED indicators Example of Application
for DC BUS OK, Battery Fail, Battery Discharge, and the + -
repeated Battery Test function to check the situation of Back up connection for
external batteries, users can customize their own DC UPS AC interruption
system to back up critical loads and capture the status of
the whole system easily. 24V
Battery Load
To satisfy our customers is our goal — - + + -
• High Quality • Low Cost + +
• Prompt Delivery • Best Service --
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