Siemens 125-3208 operating instructions Ramp-down time, End Quick Commissioning

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SED2 VFD Electronic Bypass Option Operating Instructions

Parameter	Description			Action	Setting/
Parameter	Description			Action	Default
					Default

P1121	Ramp-down time	1.	Press	to advance to	Site Setting
		1.	Press	to advance to
	0s to 650s		parameter P1121.		Default = 30
	0s to 650s				Default = 30
		2.	Press	to access the	Typical fan =
			parameter values level.		120s
		3.	Press	to advance it desired	Typical pump =
		3.	Press	to advance it desired	30s
			value.
		4.	Press	to confirm and save
			the setting.

NOTES:

1. Setting the ramp-up time too short can cause the SED2 to trip (F0001 over current, F0002 over voltage, or F0003 under voltage.

2. If using an external frequency setpoint with set ramp rates (such as from a PLC), achieve optimum SED2 performance by setting ramp times (P1120 and P1121) slightly shorter than those of the PLC.

P3900	End Quick Commissioning	1.	Press	to advance to	Setting = 1
		1.	Press	to advance to
	0 = End without motor calculation		parameter P3900.		Default = 0
	0 = End without motor calculation				Default = 0
	or factory reset.
	1 = End with motor calculation	2.	Press	to access the
	1 = End with motor calculation		parameter values level.
	and factory reset (recommended
	on SED2 without bypass option).	3.	Press	to advance to 1.
	2 = End with motor calculation	3.	Press	to advance to 1.
	2 = End with motor calculation
	and with I/O reset.	4.	Press	to confirm the
		4.	Press	to confirm the
	3 = End with motor calculation		setting.
	but without I/O reset
	(recommended with SED2 with
	bypass option).

NOTES:

1. P0010 must always be set back to 0 before operating the motor.

2. If P3900 is greater than 0 on completion of commissioning, P0010 is automatically set back to 0.

3. If P0700 either indeed was changed during this process, programming of P0704 = 3 is required.

30	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 TroubleshootingManual Organization How to Use this ManualNotation Symbol Meaning Manual NotationsWhere To Send Comments Reference DocumentsSafety Instructions Fuses optional Electronic Bypass Option OverviewGeneral Description Controller Board Controller Board Inputs and OutputsContactors Keypad FunctionsPushbutton/Indicator DescriptionPushbutton/Indicator Description Output relay on the Controller boardDimensions and Weights Installation InstructionsMechanical Installation 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 Installation Inspection Startup ProceduresSafety Precautions Power-OnSwitch Description Position DIP Switch Settings for E-Bypass FeaturesQuick Commissioning Quick Commissioning Parameter Description Action Setting DefaultUser Access Level Rated Motor Voltage Operation for Europe/NAmerica Rated Motor cosPhi P308, or Rated Motor PowerRated Motor Current Rated Motor Efficiency P0309Rated Motor Frequency Rated Motor SpeedMotor Overload Factor Selection of Command SourceStart Command Setpoint Speed Command SourceSelection of Frequency Minimum Motor Frequency Maximum Motor Frequency Ramp-up TimeRamp-down time End Quick CommissioningFlying Start Additional Parameter SettingsFlying 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 SettingAuto Bypass without Interlock Application Feature SetupOverview 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 FaultDrive Specifications Description Technical SpecificationsSpecifications Description Electronic Bypass SpecificationsDrive Specifications Description SED2 VFD Electronic Bypass Operating InstructonsBasic Sanity Description Test Fault Code/Flashes TroubleshootingPower-on Initialization Failure Unit Fault Condition Basic Sanity Test Fault CodesOverride Jumper FusesFuse Replacement Information VFD0122R2 Troubleshooting Siemens Building Technologies, Inc