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SED2 VFD Electronic Bypass Options
Operating Instructions
Item Number 125-3208, Rev. FA
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SED2 VFD Electronic Bypass Option Operating Instructions
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NOTICE The information contained within this document is subject to change without notice and should not be construed as a commitment by Siemens Building Technologies, Inc. Siemens Building Technologies, Inc. assumes no responsibility for any errors that may appear in this document. All software described in this document is furnished under a license and may be used or copied only in accordance with the terms of such license. WARNING The Siemens Building Technologies SED2 Variable F
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Table of Contents Table of Contents How to Use this Manual................................................................................................ 1 Manual Organization.................................................................................................. 1 Manual Notations....................................................................................................... 1 Where To Send Comments........................................................................
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SED2 VFD Electronic Bypass Option Operating Instructions Application Feature Setup ........................................................................................... 42 Overview.................................................................................................................... 42 Auto Bypass without Interlock.................................................................................... 42 Description..............................................................
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How to Use this Manual How to Use this Manual Manual Organization This manual contains the following sections: • How to Use this Manual, describes the organization of this manual and the symbols used throughout this manual. • Safety Instructions, provides general guidelines for your safety and to prevent equipment damage. • Electronic Bypass Option Overview, describes the Electronic Bypass Option Controller board, inputs, outputs, contactors, and keypad. • Installation Instructions,
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SED2 VFD Electronic Bypass Option Operating Instructions Where To Send Comments Your feedback is important to us. If you have comments about this manual, please submit them to technical.editor@sbt.siemens.com. Reference Documents The following SED2 documentation is available from your local Siemens Building Technologies, Inc. representative: • SED2 VFD Startup Operation, and Maintenance Manual (125-3201), provides operating instructions and procedures for the SED2. • SED2 VFD Paramete
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Safety Instructions Safety Instructions The following guidelines are provided for your safety, to prevent damage, and to extend the service life of the SED2 product and any connected equipment. Read this information carefully. Specific Warnings, Cautions, and Notes are provided in the relevant sections of this manual. WARNING: • The SED2 uses hazardous voltages and controls potentially dangerous rotating mechanical parts. Non-compliance with warnings or failure to follow the instruc
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SED2 VFD Electronic Bypass Option Operating Instructions Electronic Bypass Option Overview General Description During normal operation in a typical BYPASS OVERLOAD application, the input and output CONTACTOR RELAY contactors close and the SED2 operates the motor (Figure 1). The bypass contactor provides the ability to operate the motor on utility power and VFD MOTOR eliminate the SED2 from the motor control circuit. The SED2 Electronic INPUT OUTPUT Bypass Option also allows you to sel
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Electronic Bypass Option Overview Controller Board The Controller board is the foundation of the SED2 Electronic Bypass Option. It controls communications to and from the SED2, keypad, isolated digital inputs, relay/digital outputs, and contactors (Figure 3). SED2 INTERFACE Supports two SED2 non-isolated, digital relay outputs and three SED2 digital inputs. The maximum current draw for a relay output is 2 mA and the voltage between the digital output source and return lines is 24V. The
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SED2 VFD Electronic Bypass Option Operating Instructions Contactors The Controller board provides two or three relay contact circuits controlled by the Electronic Bypass Option: bypass, input, and output contactors. Each circuit includes a NO relay. Controller board connector J7 enables circuit connections. The relay circuits route power to the SED2 and the motor via the contactors. Controlling the contactors through the relay circuits is the main function of the Controller board. Bypass
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Electronic Bypass Option Overview Pushbutton/Indicator Description The Input On/Off pushbutton is supplied with the optional drive input Input contactor. In VFD mode, this switch does nothing. In bypass mode, this On/Off switch closes/opens the input contactor, switching the SED2 power on/off. Enable Enables SED2 operation by closing the input and output contactors. Hand Manually enables bypass mode operation by ensuring that the output Start contactor is open and then closing the
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SED2 VFD Electronic Bypass Option Operating Instructions Pushbutton/Indicator Description When the Interlock DIP switch is enabled, the Interlock Start Logic Enable indicator is on steady. Any call to start the motor in either VFD or bypass modes will not start the motor; instead it will close the Programmable Output relay on the Controller board. The Programmable Output can be used to actuate another device. When Enable Commanded Proofed this occurs, the Interlock Start Logic Commanded i
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Installation Instructions Installation Instructions Environmental Conditions Install the Electronic Bypass Option in a heated, indoor controlled environment that is free of moisture and conductive contaminants such as condensation and dust. The air entering the unit for ventilation/cooling must be clean and free from corrosive gases. The ambient temperature must be between 14°F and 104°F (-10°C to 40°C) and the relative humidity must be 0% to 95% noncondensing. Do not mount unit in direc
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SED2 VFD Electronic Bypass Option Operating Instructions Mounting 1. To ensure safe installation, verify that the surface of the mounting location is level. 2. Mount the Electronic Bypass Option vertically with the SED2 operator panel, Electronic Bypass Option keypad, and disconnect accessible. = Protective Shield Depth With 20.8 2.9 Depth Handle (53) (7.4) 4 With 11.5 10.4 (26) (10) 1 (29) 2 Handle (2.5) (5) 9.6 (24) Depth With 13.2 1.5 Handle (34) (3.8) 9.6 (24) 53.5 (136) 48 34 (122) (8
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Installation Instructions 1/2 (1.3) AND 3/4 (1.9) 1/2 (1.3) AND 3/4 (1.9) CONDUIT KNOCKOUTS CONDUIT KNOCKOUTS 3/4 (1.9) AND 1 (2.5) 1-1/4 (3.2) AND 1-1/2 (3.8) CONDUIT KNOCKOUTS CONDUIT KNOCKOUTS (3) 8 (20.3) 6 (15.2) 4 (10.2) 2-3/4 3-5/8 (6.9) (9.2) 8-1/2 (21.7) 2-1/8 16 (5.3) (40.7) 9-1/2 Figure 7. Frame Sizes D and E Conduit Locations. (24.1) Viewed from Bottom; Dimensions in Inches (Centimeters). Figure 6. Frame Sizes A through C Conduit Locations. Viewed from Bottom; Dimension
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SED2 VFD Electronic Bypass Option Operating Instructions Electrical Installation See Figure 9 for all Electronic Bypass Option wiring. 1. Route shielded twisted pair (recommended wire type) cable, 24 gauge minimum control wiring in conduit through knockout and into housing (Figures 10 through 12). Connect control wiring per job-specific drawings. NOTES: • Terminate shield at control device. • Control wiring is 12 to 26 AWG and tightening torque is 5 lb-in. 2. If applicable, route com
