4 Power Supplies SDNTM 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. All models ending in P also include a DC OK status relay contact. 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 can or cannot handle the power rating of that power supply. Input/Output Signals - Yes indicates that each power supply would have an independent relay contact to provide power supply status, and the DC bus output from the redundant module has it's own DC OK relay contact. Output only indicates that only the output of the redundant module would have a DC OK relay contact. EMC and Low Volt. Directive Related Products * SDNTM Series * SFL Series Applications * Process Control * Remote Location * Critical Production Features * * * * DC OK Relay Contact True Isolation High availability SDN features and quality Redundancy Module Compatibility Chart Single Phase SDN Series SDN 2.5-20RED SDN 30/40RED Power Rating Input / Output Signals Power Rating Input / Output Signals SDN 2.5-24-100P* Yes Yes Yes Yes SDN 4-24-100P* Yes Yes Yes Yes SDN 5-24-100P Yes Yes Yes Yes SDN 10-24-100P Yes Yes Yes Yes SDN 20-24-100P Yes Yes Yes Yes SDN 20-24-480 Yes Output Only Yes Yes SDN 30-24-480 No N/A Yes Yes SDN 40-24-480 No N/A Yes Yes Three Phase SDN Series SDN 2.5-20RED SDN 30/40RED Power Rating Input / Output Signals Power Rating Input / Output Signals SDN 5-24-480 Yes Output Only Yes Yes SDN 10-24-480 Yes Output Only Yes Yes * Paralleling will violate Class 2 current limits. 114 Visit our website at www.solahd.com or contact Technical Services at (800) 377-4384 with any questions. 4 Power Supplies SDNTM 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 Typ. 0.6 V -Vin -> Vout Current Handling Capacity -Maximum Value 20 A 40 A Yes Inverse Battery Protection Via captive screw terminals Connection -Connector size range Solid: 16-10 AWG (1.5 - 6 mm2) Stranded: 16-12 AWG (1.5 - 4 mm2) Solid: 16-5 AWG (1.5 - 16 mm2) Stranded: 16-8 AWG (1.5 - 10 mm2) Note: GND must be connected to module for voltage monitor to operate properly. See Connectors and Wiring diagrams on next page. Relay Contacts DC Okay Contacts (qty) description (1) Vout "OK" - N.O. Contact (2) Vin "OK" - N.O. Contact (1) Vout "OK" - N.O. & N.C. Contact > 18 Vdc 5% -Voltage Set Point 30 Vdc @ 2A / 250 V @ 2A -Contact Rating Vout "OK" Green LED DC OK LED > 18 Vdc 5% -Voltage Set Point Dimensions H x W x D - inches (mm) Free Space for Ventilation inches (mm) Weight lbs (kg) 4.88 in x 1.97 in x 4.55 in (124 mm x 50 mm x 116 mm) 4.88 in x 2.56 in x 4.55 in (124 mm x 65 mm x 116 mm) Above/Below: 0.39 in. (10 mm) recommended Left/Right: 0.39 in. (10 mm) recommended 1.38 (625) 1.43 (646) General Ambient Temperature Storage: -25C...+85C Operation: -10C...+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 to 50% load permissible with sideways or front side up mounting orientation. The relative humidity is < 90% RH, noncondensing. Visit our website at www.solahd.com or contact Technical Services at (800) 377-4384 with any questions. 115 4 Power Supplies Wiring Diagram for SDN 2.5-20RED Single Single Parallel Parallel Notes: 1. The Common (marked "COM -") connection to the module is required for voltage monitoring (DC OK Contacts), and is not meant to be part of the current path from the power supply to the load. 2. Protective earth connection only provides protective ground to the metal case of the module. This connection is isolated from the positive and common connections. 116 Visit our website at www.solahd.com or contact Technical Services at (800) 377-4384 with any questions. Power Supplies 4 Wiring Diagram for SDN 30/40RED Single Parallel Single Parallel Notes: 1. The Common (marked "COM -") connection to the module is required for voltage monitoring (DC OK Contacts), and is not meant to be part of the current path from the power supply to the load. 2. Protective earth connection only provides protective ground to the metal case of the module. This connection is isolated from the positive and common connections. Visit our website at www.solahd.com or contact Technical Services at (800) 377-4384 with any questions. 117