Siemens 125-3208 operating instructions Interlock

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SED2 VFD Electronic Bypass Option Operating Instructions

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 start the motor from the SED2 or bypass does not directly start the motor, but instead initiates the following Interlock procedure:

•The Interlock Start Logic Enable indicator is ON. Proofing is required to start in VFD or bypass mode.

•The Interlock Start Logic Command indicator turns ON and the Proofing indicator flashes.

•When in VFD mode, the SED2 Relay closes and the Controller board Programmable Output closes to initiate the proofing sequence. The Programmable Output relay is used to supply power to an external device such as a damper actuator.

•When not in VFD mode, the Controller board ignores the SED2 Relay.

•When in bypass mode, any call to start the motor in bypass (in either hand bypass or auto bypass) initiates the proofing sequence. The Programmable Output closes and is used to supply power to an external device such as a damper actuator.

•When control of the external device (such as a damper actuator) is satisfied, it must supply a contact closure to the Controller board Interlock Start. The Interlock Start Logic Command indicator turns OFF and the Proofing indicator turns ON. The motor then starts in the selected mode.

•Any call for the motor not to be running requires a new proofing sequence to be initiated.

NOTE: This feature can only be used with a hardwired start/stop command.

Settings

The Interlock feature requires that Controller board DIP Switch 3 is set ON.

NOTES:

1.The Interlock Start Logic Enabled indicator is on steady.

ON

1 2 3 4 5

VFD0118R1


	5


	4


		3


	2
ON

	1

	SW1

OFF

44	Siemens Building Technologies, Inc.

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Contents SED2 VFD Electronic Bypass Options Page SED2 VFD Electronic Bypass Option Operating Instructions Page Service Statement Page Table of Contents Application Feature Setup Technical Specifications TroubleshootingHow to Use this Manual Notation Symbol MeaningManual Organization Manual NotationsWhere To Send Comments Reference DocumentsSafety Instructions General Description Electronic Bypass Option OverviewFuses optional Controller Board Controller Board Inputs and OutputsContactors Keypad FunctionsPushbutton/Indicator DescriptionPushbutton/Indicator Description Output relay on the Controller boardInstallation Instructions Mechanical InstallationDimensions and Weights Environmental ConditionsBypass Dimensions in Inches Centimeters MountingFrame Sizes D and E Conduit Locations Viewed from Bottom Electrical Installation Bypass Power Circuit Routing of Power and Control Wiring For Frame Sizes a and B Disconnect Overload Ground Lug Switch Disconnect Overload Ground Lug Wire Max Startup Procedures Safety PrecautionsInstallation Inspection Power-OnSwitch Description Position DIP Switch Settings for E-Bypass FeaturesQuick Commissioning User Access Level Parameter Description Action Setting DefaultQuick Commissioning America Operation for Europe/NRated Motor Voltage Rated Motor Power Rated Motor CurrentRated Motor cosPhi P308, or Rated Motor Efficiency P0309Rated Motor Frequency Rated Motor SpeedStart Command Selection of Command SourceMotor Overload Factor Selection of Frequency Speed Command SourceSetpoint Minimum Motor Frequency Maximum Motor Frequency Ramp-up TimeRamp-down time End Quick CommissioningAdditional Parameter Settings Flying StartFlying Start R0000Motor Current Flying Start Search Rate Flying StartAutomatic Restart Automatic RestartSED2 VFD Electronic Bypass Option Operating Instructions Number of Restart Attempts Time to First RestartVdc Controller Restart Time IncrementPulse Frequency Motor Data Identification Motor Data IdentificationMotor Data Identification Reset to Factory Defaults P0970Required SED2 Parameter Settings Parameter SettingApplication Feature Setup OverviewAuto Bypass without Interlock DescriptionSettings Example SED2 SettingsInterlock Application Feature Setup Essential Services Wiring Example for InterlockWiring Example for Essential Services Interlock and Auto Bypass on VFD Fault Wiring Example for Interlock and Auto Bypass on VFD FaultTechnical Specifications Specifications DescriptionDrive Specifications Description Electronic Bypass SpecificationsDrive Specifications Description SED2 VFD Electronic Bypass Operating InstructonsTroubleshooting Power-on Initialization Failure Unit Fault ConditionBasic Sanity Description Test Fault Code/Flashes Basic Sanity Test Fault CodesOverride Jumper FusesFuse Replacement Information VFD0122R2 Troubleshooting Siemens Building Technologies, Inc