Siemens SED2 VFD Electronic Bypass Option 125-3208 - User Manual

SED2 VFD Electronic Bypass Option Operating Instructions 4 Siemens Building Technologies, Inc. Electronic Bypass Option Overview General Description During normal operation in a typical application, the input and output contactors close and the SED2 operates the motor (Figure 1). The bypass contacto...

Electronic Bypass Option Overview Siemens Building Technologies, Inc. 5 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). CO...

SED2 VFD Electronic Bypass Option Operating Instructions 6 Siemens Building Technologies, Inc. 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 b...

Electronic Bypass Option Overview Siemens Building Technologies, Inc. 7 Pushbutton/Indicator Description Input On/Off VFD0098R1 The Input On/Off pushbutton is supplied with the optional drive input contactor. In VFD mode, this switch does nothing. In bypass mode, this switch closes/opens the input c...

Installation Instructions Siemens Building Technologies, Inc. 9 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 ...

SED2 VFD Electronic Bypass Option Operating Instructions 10 Siemens Building Technologies, Inc. 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 ...

SED2 VFD Electronic Bypass Option Operating Instructions 12 Siemens Building Technologies, Inc. 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 ...

Startup Procedures Siemens Building Technologies, Inc. 19 Startup Procedures Safety Precautions WARNING: When you connect input power to the Electronic Bypass Option, the motor terminals are energized even if the motor is not running. Do not make any connections with input power connected to the Ele...

SED2 VFD Electronic Bypass Option Operating Instructions 20 Siemens Building Technologies, Inc. After the basic sanity test, if the DIP switches have not changed and there is no operator intervention, the most recent bypass function is restored. If the DIP switches have changed, the Electronic Bypas...

Startup Procedures Siemens Building Technologies, Inc. 21 9. If motor rotation is incorrect in either VFD, bypass, or both modes, have the appropriate site personnel take corrective action as follows: − Wrong Rotation in Bypass, Right in VFD Mode – Swap two input leads on the main input device of th...

SED2 VFD Electronic Bypass Option Operating Instructions 22 Siemens Building Technologies, Inc. Parameter Description Action Setting/ Default P0003 User Access Level Allows you to access more parameters. 1 = Standard 2 = Extended 3 = Expert 1. Press to access parameter r0000 and to enter the SED2 pa...

Startup Procedures Siemens Building Technologies, Inc. 31 Additional Parameter Settings NOTE: If Display Selection for r0000, parameter P0005 = 21 (actual frequency), then the BOP display alternately shows setpoint values and the actual value (0 Hz). Flying Start Parameter Description Action Setting...

SED2 VFD Electronic Bypass Option Operating Instructions 34 Siemens Building Technologies, Inc. Automatic Restart Continued Parameter Description Action Setting/ Default P1210 (Continued) P1210 = 4, Restart after supply power brownout (P1211 disabled): For these settings it is fundamental that the d...

SED2 VFD Electronic Bypass Option Operating Instructions 36 Siemens Building Technologies, Inc. Parameter Description Action Setting/ Default P1213 Restart Time Increment Selects the amount (seconds) that the restart time is incremented for each restart of the SED2 if P1210 automatic restart is acti...

Startup Procedures Siemens Building Technologies, Inc. 39 Motor Data Identification Continued 6. Press to advance to setting P1910=3. Press to confirm and save the setting. When P1910=3, Alarm 0541 (motor data identification active) is output and internally P0340 is set to 2. Initiate the measuring ...

SED2 VFD Electronic Bypass Option Operating Instructions 40 Siemens Building Technologies, Inc. Reset to Factory Defaults Parameter Description Action Setting/ Default P0010 P0970 Reset to Factory Default Resets SED2 parameters to the factory defaults. 1. Press to enter the SED2 parameter mode and t...

Required SED2 Parameter Settings Siemens Building Technologies, Inc. 41 Required SED2 Parameter Settings The following SED2 parameters are programmed by the factory before shipping. If these parameters are changed or if the SED2 is ever reset to factory default, you must reset these parameters as fo...

SED2 VFD Electronic Bypass Option Operating Instructions 42 Siemens Building Technologies, Inc. Application Feature Setup Overview The Controller board supports six isolated digital inputs and six digital relay outputs for customer use (Figure 13). The digital inputs include: Remote Start Input, Rem...

Application Feature Setup Siemens Building Technologies, Inc. 43 NOTES: 1. All safety conditions must be met for bypass mode operation. 2. The input contactor remains energized. The Electronic Bypass Option will return to VFD mode operation as soon as the SED2 Relay in control opens. When the Electr...

SED2 VFD Electronic Bypass Option Operating Instructions 44 Siemens Building Technologies, Inc. Interlock Description The Interlock feature (also called damper end switch logic) enables the SED2 outputs to inhibit motor start until a safety condition (proofing sequence) is confirmed. Any call to sta...

SED2 VFD Electronic Bypass Option Operating Instructions 46 Siemens Building Technologies, Inc. Wiring Example for Interlock Customer Proof Power to Customer Device Programmable Output, NO COM NC DIGITAL OUTPUTS DIGITAL INPUTS J2 J1 13 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 11 1...

SED2 VFD Electronic Bypass Option Operating Instructions 48 Siemens Building Technologies, Inc. Interlock and Auto Bypass on VFD Fault Description Interlock and Auto Bypass features are both active. Auto bypass now becomes auto bypass on a VFD fault only (bypass is initiated by the SED2 Fault and th...

Technical Specifications Siemens Building Technologies, Inc. 49 Technical Specifications Table 5. Electronic Bypass Specifications. Specifications Description 208V, 3 ac±10% 240V, 3 ac ±10% 480V, 3 ac ±10% Input Voltage (3 phase) 575V, 3 ac ±10% Digital Inputs Six Digital Inputs as follows: • Remote...

Troubleshooting Siemens Building Technologies, Inc. 51 Troubleshooting WARNING: Always disconnect all power sources before opening the SED2 Electronic Bypass Option. Power-on Initialization Failure (Unit Fault Condition) During power-on initialization, a unit fault condition occurs if the Electronic...

SED2 VFD Electronic Bypass Option Operating Instructons 52 Siemens Building Technologies, Inc. Override Jumper An Override Jumper (J8) is supplied on the Controller board. Moving this jumper to the override position removes the Controller board and its keypad from the control and closes the drive ou...

Troubleshooting Siemens Building Technologies, Inc. 53 Table 8. Fuse Replacement Information. Bypass Option Part Number Primary Fuse (F3 and F4) Secondary Fuse (F2) VBE10.5… to VBE17.5… Bussmann/Littlefuse LP-CC-1 Bussmann/Littlefuse LP-CC-6/10 VBE110… to VBE110… Bussmann/Littlefuse LP-CC-2 Bussmann...