Siemens 125-3208 operating instructions Maximum Motor Frequency, Ramp-up Time

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Startup Procedures

Parameter	Description			Action	Setting/
Parameter	Description			Action	Default
					Default

P1082	Maximum Motor Frequency	1.	Press	to advance to	Site Setting
		1.	Press	to advance to
	0 Hz to 650 Hz		parameter P1082.		Default = 50 or
	0 Hz to 650 Hz				Default = 50 or
					60
	Maximum motor frequency at	2.	Press	to access the
	which the motor will run		parameter values level.		(Default is
	regardless of the frequency				determined by
	setpoint. This value applies to				the setting of
	both clockwise and	3.	Press	to advance it desired	the motor
	counterclockwise rotation.		value.		frequency and
					unit of
					measurement
		4.	Press	to confirm and save	DIP switches.)
			the setting.

NOTE:

This value is limited internally to 200 Hz or five times the rated motor frequency (P0305). When P1300 is greater than or equal to 20 (control mode = vector control), the value displays via r0209 (maximum frequency).

P1120	Ramp-up Time	1.	Press	to advance to	Site Setting
		1.	Press	to advance to
	0s to 650s		parameter P1120.		Default = 10
	0s to 650s				Default = 10
		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 time (P1120 and P1121) slightly shorter than those of the PLC.

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 Technical Specifications Troubleshooting Application Feature SetupNotation Symbol Meaning How to Use this ManualManual Organization Manual NotationsReference Documents Where To Send CommentsSafety Instructions General Description Electronic Bypass Option OverviewFuses optional Controller Board Inputs and Outputs Controller BoardKeypad Functions ContactorsDescription Pushbutton/IndicatorOutput relay on the Controller board Pushbutton/Indicator DescriptionMechanical Installation Installation InstructionsDimensions and Weights Environmental ConditionsMounting Bypass Dimensions in Inches CentimetersFrame 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 Safety Precautions Startup ProceduresInstallation Inspection Power-OnDIP Switch Settings for E-Bypass Features Switch Description PositionQuick Commissioning User Access Level Parameter Description Action Setting DefaultQuick Commissioning America Operation for Europe/NRated Motor Voltage Rated Motor Current Rated Motor PowerRated Motor cosPhi P308, or Rated Motor Efficiency P0309Rated Motor Speed Rated Motor FrequencyStart Command Selection of Command SourceMotor Overload Factor Selection of Frequency Speed Command SourceSetpoint Minimum Motor Frequency Ramp-up Time Maximum Motor FrequencyEnd Quick Commissioning Ramp-down timeFlying Start Additional Parameter SettingsFlying Start R0000Search Rate Flying Start Motor Current Flying StartAutomatic Restart Automatic RestartSED2 VFD Electronic Bypass Option Operating Instructions Time to First Restart Number of Restart AttemptsRestart Time Increment Vdc ControllerPulse Frequency Motor Data Identification Motor Data IdentificationMotor Data Identification P0970 Reset to Factory DefaultsParameter Setting Required SED2 Parameter SettingsOverview Application Feature SetupAuto Bypass without Interlock DescriptionExample SED2 Settings SettingsInterlock Application Feature Setup Wiring Example for Interlock Essential ServicesWiring Example for Essential Services Wiring Example for Interlock and Auto Bypass on VFD Fault Interlock and Auto Bypass on VFD FaultSpecifications Description Technical SpecificationsDrive Specifications Description Electronic Bypass SpecificationsSED2 VFD Electronic Bypass Operating Instructons Drive Specifications DescriptionPower-on Initialization Failure Unit Fault Condition TroubleshootingBasic Sanity Description Test Fault Code/Flashes Basic Sanity Test Fault CodesFuses Override JumperFuse Replacement Information VFD0122R2 Troubleshooting Siemens Building Technologies, Inc