PowerTec DFS-1 Drive Regenerative Current Limit, Pulse Multiplier, Modulation and Operation Modes

Page 37

limit the output DRIVE current to 150%. This parameter CANNOT OVERRIDE that limit, but this parameter may be set for an ultimate current limit on drives which are built with more capability than the motors they run. In this way, short term 300% current ratings can be obtained.

45.DRIVE REGENERATIVE CURRENT LIMIT

USE PARAMETER #45 TO SET THE REGENERA- TIVE CURRENT LIMIT OF THE DRIVE.

RANGE OF VALUES: 0000 0000h to 0000 0096h 0 to 150% (decimal)

Default Value: 0000 0032h

50% (decimal)

Parameter #44 allows current limit settings of up to 255% and must be set in terms of MOTOR current. Other circuitry in the motor control will limit the output DRIVE current to 150%. This parameter CANNOT OVERRIDE that limit, but this parameter may be set for an ultimate current limit on drives which are built with more capability than the motors they run. In this way, short term 300% current ratings can be obtained.

46.PULSE MULTIPLIER

USE PARAMETER #46 TO SET THE VALUE BY WHICH THE ENCODER PULSE WILL BE MULTIPLIED.

RANGE OF VALUES: 0000 0000h to 0000 0003h

 

0 to 3

(decimal)

Default Value:

0000 0002h

2 (decimal)

0= X 1

2= X 4

 

1= X 2

3= Commutation Mode

Encoder loss detection applies only when pulse multiplier is set to 4X.

47.MODULATION AND OPERATION MODES

USE PARAMETER #47 TO SET REGEN / NON- REGEN AND MODULATION MODES.

RANGE OF VALUES: 0000 0000h to 0001 0001h no decimal significance

Default Value: 0000 0000h no decimal significance

Parameter #47 contains two pieces of informa- tion.

VL4 VL3 sets the operational mode of the drive: 0000h sets the drive for non-regenerative

operation.

0001h sets the drive for regenerative operation.

VL2 VL1 sets the modulation mode for the drive:

0000h sets the modulation for bottom transistors only.

000h1 sets the modulation for top and bottom transistors.

Normal setup is:

 

Non-regenerative drives:

0000 0000h

Regenerative drives:

0001 0001h

Normally, in POWERTEC Brushless DC motor controls, non-regenerative drives modulate the bottom transistors only (this generates less heat and makes them more efficient). Regenerative drives modulate both top and bottom transistors for better control. There are some cases where modulating both top and bottom transistors in a non-regenerative drive may be desirable. This can be done by setting VL2 VL1 to 0001h.

Note: If regenerative mode is used, the drive may require an optional DC bus loader to dissipate the regenerative energy and avoid over voltage faults.

48.JUMP OR MOP OPERATION

USE PARAMETER #48 TO SET TEMPORARY OR PERMANENT UP/DOWN SPEED/RATIO CHANGES.

RANGE OF VALUES: 0000 0000h to 0000 0001h

0 to 1

(decimal)

Default Value: 0000 0000h

0 (decimal)

Parameter #48 selects whether the change in speed or ratio made by the up/down inputs is a temporary change which lasts as long as the up or down input is active (JUMP mode), or whether the change will remain after the up/down input has been released (MOP mode). The up/down functions may be generated by software through setting of param- eter #3.

Page 32

DFS-1 Manual

Revised 7/95

 

 

POWERTEC Ind. Corp.©

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Contents Microprocessor Based Brushless D.C Motor Controller DFS-1Subsidiary Powertec Industrial Corporation Errata October Additional InfoMounting -- Read this Entire Section Before Starting InstallationContents DFS 1 Setup Retrofitting the Model 1000,1000A, or 1000AR Communication ProtocolMenu and Keypad Hierarchy Revised 7/95 Introduction Summary of Warranty and Disclaimer Connections Power ConnectionsAnalog Inputs Motor Encoder CableAnalog Outputs FrequencyinputFrequencyoutputdigital Inputs Communications Digital OutputsDigital Out #4 Reverse This page WAS Intentionally Left Blank Default Setup Revised 7/95 Input Setup Function Power SuppliesThis Supply is for the Motor Encoder only VDCDigital Inputs Frequency Inputs OutputsInput #1 Reference Frequency Input Outputs #1 Reference Frequency Output19.2K, and 38.4K baud Standard RS-485Cable Nodes MaximumThis page WAS Intentionally Left Blank Unit ID Local / Remote ControlBaud Rate Number Baud RateModes of Operation Communications ProtocolTo 1 decimal Encoder Pulses PER Revolution Maximum Motor SpeedUSE Parameter #6 to SET the Absolute Maximum Motor Speed Master Ramp Down Time Master Ramp UP TimeSlave Ramp UP Time Slave Ramp Down TimeSlave Ratio Preset Master Preset SpeedTo 99,999 decimal Default Value 0000 06D6h Engineering UnitsTo 32 decimal Default Value 0000 0001h Analog Input #1 Mode SelectMaximum Ratio Analog Input #1 LOW Engineering Units EGU Analog Input #1 Signal ConditioningCenter value Future useAnalog Input #2 Signal Conditioning Analog Input #2 Mode SelectAnalog Input #1 High Engineering Units EGU Analog Input #2 LOW Engineering Units EGUAnalog Output #2 Mode Select Analog Output #1 Mode SelectAnalog Output #1 LOW Engineering Units EGU Analog Output #1 High Engineering Units EGUAnalog Output #2 LOW Engineering Units EGU Default Value 0000 0096hAnalog Output #2 High Engineering Units EGU Digital Input #2 Function Digital Input #1 Function Digital Input #3 Function Digital Input #4 FunctionDigital Input #6 Function Digital Input #5 FunctionDigital Input #7 Function Digital Output #1 FunctionDrive Stability Setting Drive Gain SettingDigital Output #2 Function Digital Output #3 FunctionPulse Multiplier Drive Regenerative Current LimitModulation and Operation Modes Jump or MOP OperationMaster Jump Down Amount Master Jump UP AmountSlave Jump UP Amount Slave Jump Down AmountInput Debounce Value Communications Turnaround DelayMinimum Ratio Float or FreezeMaster Preset #2 Slave JOG Ratio Slave Preset #2Contactordelay EGU TAG SelectThis page WAS Intentionally Left Blank DFS 1 Setup Basic Setup of the DFS-1 Controller Master Mode Setup Slave Mode Setup Inputs and Outputs Setup This parameter selects the Powertec binary protocol Communications SetupSET Parameter #56 for Communications Turn around Delay SET Parameter #3 to Select Which Functions are RemoteError Codes for ON-BOARD Display This page WAS Intentionally Left Blank Communications Protocol Command List Parameter List DLESTXUIDCMDCS4CS3 CS2CS1DLEETXCSM DlestxuidcmddleetxcsmDlestxuidnakerrdleetxcsm ERRResponse If no errors Response If no errors and unit i.d. does not equalDlestxuidackdleetxcsm DlestxuidcmdprmdleetxcsmDlestxuidcmdatddleetxcsm DLESTXUIDCMDPRMVL4Dlestxuidcmddtadleetxcsm DLESTXUIDACKDA4DA3Dlestxuidcmddigdleetxcsm DLESTXUIDCMDDTAVL4DLESTXUIDCMDDIGVL4 Where Is unused Is Jog Is Preset Is Contactor AuxBIT PSN SML BIT PSN SMHSmhsmldleetxcsm Message DLESTXUIDCMD0000BIT PSN RML BIT PSN RMHDLESTXUIDCMDAMDVL4 Attachmentb Parameter DescriptionAdditional Info Output Contactor Typical Dynamic Braking Typical This page WAS Intentionally Left Blank DFS-1 Model 1000 series retro-fit kit consists Quantity Quantity Pin Connector CableRevised 7/95 Appendix B Not visible in some modes Revised 7/95 Powertec Ind. Corp Figures 2 DFS-1 Manual Figures DFS-1 Manual Igur DFS-1 Manual Select AI ModeEnterEnter DFS-1 Manual Igur DFS-1 Manual Sel DFS-1 Manual Igures DFS-1 Manual Figures 29 DFS-1 Manual
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