Siemens 125-3208 operating instructions Override Jumper, Fuses

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SED2 VFD Electronic Bypass Option Operating Instructons

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 output contactor (and the input contactor if supplied).

VFD0121R1

BPEC

J2

J1

J8

OVERRIDE JUMPER

J8 SHOWN IN NORMAL POSITION

BPEC

J2

J1

J8

OVERRIDE JUMPER

J8 SHOWN IN OVERRIDE POSITION

Fuses

Figure 14. Override Jumper J8 Location and Positions.

The Controller board contains a fuse (F1) under its cover (Figure 15). Determine if the fuse F1 needs replacement as follows:

1.If the basic sanity test indicator (Figure 15) is flashing, fuse F1 is OK and no action is required.

2.Verify that 120 Vac power is available on the secondary side of the Electronic Bypass Option power transformer (Figure 15). If power is not proper, check the Electronic Bypass Option components such as:

•Power transformer

•Power transformer fuses (F2, F3, and F4). Table 8 provides fuse replacement information.

3.If power is proper, check fuse F1 as follows:

•Power down the Electronic Bypass Option.

•Remove the Controller board cover.

•Remove fuse F1.

•Use an ohm meter to check the fuse.

•Replace fuse F1 if necessary.

NOTE: Replace fuse F1 with an 8 AG, 1/2 amp, 250V, fast-acting instrument fuse such as a Bussmann AGX1/2 or Littlefuse 361.500.

52	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 Electronic Bypass Option Overview General DescriptionFuses 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 Parameter Description Action Setting Default User Access LevelQuick Commissioning Operation for Europe/N AmericaRated Motor Voltage Rated Motor Power Rated Motor CurrentRated Motor cosPhi P308, or Rated Motor Efficiency P0309Rated Motor Frequency Rated Motor SpeedSelection of Command Source Start CommandMotor Overload Factor Speed Command Source Selection of FrequencySetpoint 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