Power Supplies 3 SDN Series Redundant Options The SDN Series standard options allow for operation in a wide variety of applications. With the addition of an external redundancy module, the SDN can also be used for true redundant operation including 2N and N+x configurations. All SDN units include built in current sharing for parallel and redundant operation. The external modules SDN 2.5-20RED and SDN 30/40RED increase the reliability by isolating the supplies and adding more signal options. Paralleling for increased power does not require the use of these modules. Module Compatibility Two separate modules are available to provide the maximum flexibility in size, cost and signaling capability. Refer to the chart below for information on which module can be used for each SDN power supply. Power Rating A simple Yes or No indication that this module Features can or cannot handle the power rating of that power supply. DC OK Relay Contact Input/Output Signals Yes indicates that each power supply True Isolation would have an independent relay contact to provide power High availability supply status, and the DC bus output from the redundant SDN features and quality module has its own DC OK relay contact. Output only indicates that only the output of the redundant module would have a DC OK relay contact. Related Products SDN Series Applications Process Control Remote Location Critical Production Redundancy Module Compatibility Chart Single Phase SDN Series SDN 5-24-100P SDN 10-24-100P SDN 2.5-24-100P * SDN 4-24-100LP * SDN 20-24-100C SDN 5-24-100C SDN 10-24-100C Power Rating Yes Yes Yes Yes Yes SDN 2.5-20RED Input / Output Signals Yes Yes Yes Yes Yes Power Rating Yes Yes Yes Yes Yes SDN 30/40RED Input / Output Signals Yes Yes Yes Yes Yes Three Phase SDN Series SDN 5-24-480C SDN 10-24-480C SDN 20-24-480CC SDN 40-24-480C Power Rating Yes Yes Yes No SDN 2.5-20RED Input / Output Signals Yes Yes Yes N/A Power Rating Yes Yes Yes Yes Yes SDN 30/40RED Input / Output Signals Yes Yes Yes Yes Yes * Paralleling will violate Class 2 current limits. Contact Technical Services at (800) 377-4384 with any questions. 130 Visit our website at www.solahd.com. Power Supplies 3 SDN Redundant Series Specifications for SDN2.5-20RED and SDN 30/40RED Catalog Number Description SDN 2.5-20RED SDN 30/40RED Concept By means of a separate redundancy module, you can interconnect several identical SDN power supply units in a N+1 redundant mode. These external modules decouple the power supply outputs from each other so that, in case of failure, one power supply unit cannot overload the other units. The modules incorporate DC OK relay contacts. The switch on front of the SDN power supply should be placed in parallel mode (not single mode) when power supplies are used with redundant module. Electrical Characteristics Voltage 24 Vdc -Nominal Value 35 V -Max. Rated Voltage Drop -V -> V Typ. 0.6 V in out Current Handling Capacity 20 A 40 A -Maximum Value Yes Inverse Battery Protection Via captive screw terminals Connection 2 2 Solid: 16-10 AWG (1.5 - 6 mm ) Solid: 16-5 AWG (1.5 - 16 mm ) 2 2 Stranded: 16-12 AWG (1.5 - 4 mm ) Stranded: 16-8 AWG (1.5 - 10 mm ) -Connector size range Note: GND must be connected to module for voltage monitor to operate properly. See Connectors and Wiring diagrams on next page. Relay Contacts (1) V OK - N.O. Contact out (1) V OK - N.O. & N.C. Contact DC Okay Contacts (qty) description out (2) V OK - N.O. Contact in > 18 Vdc 5% -Voltage Set Point 30 Vdc 2A / 250 V 2A -Contact Rating V OK Green LED DC OK LED out > 18 Vdc 5% -Voltage Set Point Dimensions 4.88 in x 1.97 in x 4.55 in 4.88 in x 2.56 in x 4.55 in H x W x D - inches (mm) (124.0 mm x 50.0 mm x 116.0 mm) (124.0 mm x 65.0 mm x 116.0 mm) Above/Below: 0.39 in. (10 mm) recommended Free Space for Ventilation - Left/Right: 0.39 in. (10 mm) recommended inches (mm) 1.4 (625.00) 1.4 (646.00) Weight lbs (kg) General Storage: -25C to +85C Operation: -10C to +60C full power with operation to 70C possible with a linear derating to half power from 60C to 70C (Convection cooling, no forced air required). Operation up Ambient Temperature to 50% load permissible with sideways or front side up mounting orientation. The relative humidity is < 90% RH, noncondensing. Contact Technical Services at (800) 377-4384 with any questions. 131 Visit our website at www.solahd.com.