PowerTec DFS-1 manual Additional Info

Page 60

Additional Info

DFS SOFTWARE MODIFICATION FOR

DYNAMIC BRAKING OR OUTPUT CONTACTOR

OPERATION

Functional Description

A new function for Contactor Aux has been added to the digital input choices. When configured as described in the example, 24VDC must be present at this input for the drive to run. Parameter #62, Contactor Delay, is a number of 25ms intervals that will occur between the DFS controller acceptance of a run command and the firing of the transistors. If the Contactor Aux input signal is low, the DFS starts the timer and closes the Contactor Output. If the Contactor Aux input does not switch high before the timer runs out, the drive will return to the stop condition. If the Contactor Aux input does switch high, the drive will start running when the timer runs out.

Example Setup for Dynamic Braking

1Set Digital Input #7 mode to Contactor Aux, polarity to Active Low.

2Set Digital Output #4 mode to Normally Open, polarity to Normally Closed.

3Set Contactor Delay to 20 (20 x 25ms = 500ms = 1/2 second).

Run command causes the Contactor Output to close, the Contactor Relay opens, the feedback contacts close and the drive starts to run.

Example Setup for Output Contactor

1Set Digital Input #7 mode to Contactor Aux, polarity to Active Low.

2Set Digital Output #4 mode to Normally Open, polarity to Normally Closed.

3Set Contactor Delay to 10 (10 x 25ms = 250ms = 1/4 second).

Run command causes the Contactor Output to close, the Contactor Relay closes, the feedback contacts close and the drive starts to run.

The difference in the operation of the two types of contactors is that the Dynamic Braking Contactor is normally closed whereas the Output Contactor is normally open. In both contactors, the auxilliary contacts are normally open.

Terms Used

1Contactor Aux - The digital input on the DFS board which is connected to the feedback contacts on the contactor relay.

2Contactor Output - The digital output on the DFS board which activates the solenoid on the contactor relay.

3Signal low - 0VDC

4Signal high - 24VDC

Revised 7/95	DFS-1 Manual	Page 55
POWERTEC Ind. Corp.©

Image 60

Contents DFS-1 Microprocessor Based Brushless D.C Motor ControllerSubsidiary Powertec Industrial Corporation Errata Additional Info OctoberInstallation Mounting -- Read this Entire Section Before StartingContents DFS 1 Setup Communication Protocol Retrofitting the Model 1000,1000A, or 1000ARMenu and Keypad Hierarchy Revised 7/95 Introduction Summary of Warranty and Disclaimer Power Connections ConnectionsMotor Encoder Cable Analog InputsFrequencyinput Analog OutputsFrequencyoutputdigital Inputs Digital Outputs CommunicationsDigital Out #4 Reverse This page WAS Intentionally Left Blank Default Setup Revised 7/95 Power Supplies Input Setup FunctionThis Supply is for the Motor Encoder only VDCFrequency Inputs Outputs Digital InputsInput #1 Reference Frequency Input Outputs #1 Reference Frequency OutputStandard RS-485 19.2K, and 38.4K baudCable Nodes MaximumThis page WAS Intentionally Left Blank Local / Remote Control Unit IDBaud Rate Number Baud RateCommunications Protocol Modes of OperationTo 1 decimal Maximum Motor Speed Encoder Pulses PER RevolutionUSE Parameter #6 to SET the Absolute Maximum Motor Speed Master Ramp UP Time Master Ramp Down TimeSlave Ramp UP Time Slave Ramp Down TimeMaster Preset Speed Slave Ratio PresetTo 99,999 decimal Default Value 0000 06D6h Engineering UnitsAnalog Input #1 Mode Select To 32 decimal Default Value 0000 0001hMaximum Ratio Analog Input #1 Signal Conditioning Analog Input #1 LOW Engineering Units EGUCenter value Future useAnalog Input #2 Mode Select Analog Input #2 Signal ConditioningAnalog Input #1 High Engineering Units EGU Analog Input #2 LOW Engineering Units EGUAnalog Output #1 Mode Select Analog Output #2 Mode SelectAnalog Output #1 LOW Engineering Units EGU Analog Output #1 High Engineering Units EGUDefault Value 0000 0096h Analog Output #2 LOW Engineering Units EGUAnalog Output #2 High Engineering Units EGU Digital Input #1 Function Digital Input #2 FunctionDigital Input #3 Function Digital Input #4 FunctionDigital Input #5 Function Digital Input #6 FunctionDigital Input #7 Function Digital Output #1 FunctionDrive Gain Setting Drive Stability SettingDigital Output #2 Function Digital Output #3 FunctionDrive Regenerative Current Limit Pulse MultiplierModulation and Operation Modes Jump or MOP OperationMaster Jump UP Amount Master Jump Down AmountSlave Jump UP Amount Slave Jump Down AmountCommunications Turnaround Delay Input Debounce ValueMinimum Ratio Float or FreezeSlave JOG Ratio Slave Preset #2 Master 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 Communications Setup This parameter selects the Powertec binary protocolSET 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 Dlestxuidcmddleetxcsm DLESTXUIDCMDCS4CS3 CS2CS1DLEETXCSMDlestxuidnakerrdleetxcsm ERRResponse If no errors and unit i.d. does not equal Response If no errorsDlestxuidackdleetxcsm DlestxuidcmdprmdleetxcsmDLESTXUIDCMDPRMVL4 DlestxuidcmdatddleetxcsmDlestxuidcmddtadleetxcsm DLESTXUIDACKDA4DA3DLESTXUIDCMDDTAVL4 Dlestxuidcmddigdleetxcsm Where Is unused Is Jog Is Preset Is Contactor Aux DLESTXUIDCMDDIGVL4 BIT PSN SML BIT PSN SMHMessage DLESTXUIDCMD0000 SmhsmldleetxcsmBIT PSN RML BIT PSN RMHAttachmentb Parameter Description DLESTXUIDCMDAMDVL4Additional Info Output Contactor Typical Dynamic Braking Typical This page WAS Intentionally Left Blank Quantity Pin Connector Cable DFS-1 Model 1000 series retro-fit kit consists QuantityRevised 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