specification model mtbf dimension note packing 1. all parameters not specially mentioned are measured at 24vdc input, ra ted load and 25 of ambient temperature. 2. the power supply is considered a component which will be installed into a f inal equipment. the final equipment must be re-confirmed that it still me ets emc directives. for guidance on how to perform these emc tests, please refer to ?emi testing of c omponent power supplies.? (as available on http://www.meanwell.com) file name:dr-rdn20-spec 2011-06-17 20a power supply redundancy module d r - r d n 2 0 features : output input others environment dr-rdn20 reverse voltage (max.) output current (max.) voltage drop led indicators input voltage range number of inputs input current (max.) input voltage alarm working temp. working humidity storage temp., humidity vibration relay contact rating (max.) 30v 20a 0.5v two green leds indicating each input is "ok or fail" 21 ~ 28v two 20a per input when input is > 20v( 5%) or < 30v ( 5%) relay contacts 30vdc, 1a -20 ~ +70 20 ~ 90% rh non condensing -40 ~ +85 , 10 ~ 95% rh 10 ~ 500hz, 2g 10min./1cycle, period for 60min. each along x, y, z axes ; mounin g: compliance to iec60068-2-6 function 996.8khrs min. mil-hdbk-217f (25 ) 55.5*125.2*100mm (w*h*d) 0.5kg; 20pcs/11kg/1.29cuft 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 withstand voltage isolation resistance terminal-chassis :>100m ohms / 500vdc / 25 / 70% rh terminal-chassis :0.5kvac, relay contacts-terminal :0.5kvac safety & emc (note 2) compliance to en55022 (cispr22) class b, en61000-3-2,-3 compliance to en61000-4-2,3,4,5,6,8,11, heavy industry level, c riteria a psu psu psu psu psu psu psu psu psu psu load load load vout dr-rdn20 dr-rdn20 dr-rdn20 dr-rdn20 dr-rdn20 dr-rdn20 vout vout vout vout vout vin a vin a vin a vin a vin a vin b vin b vin b vin b .............. vin b 1. 1+1 redundancy using 1 more psu as the redundant unit 3. single use: connecting only one psu to one dr-rdn20 to reduce the stress of th e diodes and hence increase the reliability 2. 1+n redundancy: using more psus as the redundant units to increase the rel iability typical application notes emc immunity emc emission
file name:dr-rdn20-spec 2011-06-17 case no.923c unit:mm mechanical specification d r - r d n 2 0 block diagram b vout+ vin/vout- vin b+ vin a+ relay a relay + alarm b b2 a2 b1 a1 + alarm a ambient temperature ( ) load (%) -20 0 10 20 30 45 50 60 70 20 40 60 80 100 (vertical) terminal pin no. assignment (tb1) terminal pin no. assignment (tb2) pin no. pin no. 34 assignment assignment vout+ vout- alarm b1 alarm b2 alarm a1 alarm a2 vin b+ vin a+ vin- admissible din-rail:ts35/7.5 or ts35/15 35 55.5 1 23 4 5 6 tb1 12 3 4 tb2 led 125.2 100 1 2 2 1 6 5 3,4 derating curve 20a power supply redundancy module
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