PowerFlex 750-Series AC Drives User Manual

Programming and Parameters 3-31FileGroupFEEDBACK & I/OFeedbackNameDescriptionNo.140 755 Virtual EncDelayVirtual Encoder DelayOne sample period delayed output of P142 [Virtual Enc Psn]. Used in someapplications to phase synchronize position reference though a drivecommunications link. The master is delayed one sample while the downstreamdrives update their position references – then all drives sample positionsimultaneously. The downstream drives do not select a delay. The selection of thedelayed or non-delayed position reference is made by choosing the desiredparameter in P766 [Psn Direct Stpt].141 755 Virtual Enc EPRVirtual Encoder Edges Per RevolutionEquivalent Edges Per Revolution (EPR) or line count of a virtual encoder. Avirtual encoder is a position reference whose input is derived from the speedreference. It accumulates pulses at the same rate as a real encoder of identicalPulses Per Revolution (PPR). Enter the equivalent PPR. For example, enter 1024PPR to match an encoder with 1024 EPR.142 755 Virtual Enc PsnVirtual Encoder PositionA 32 bit pulse accumulator of the virtual encoder. The accumulated pulse count isequivalent to the hardware accumulator of a real encoder. It accumulates at arate of 4x the value placed in P141 [Virtual Enc EPR]. The accumulator starts atzero upon position enable.ValuesDefault:Options:0–2147483648 / 2147483647Default: 4096Min/Max: 10 / 67108864Default: 0Min/Max: –/+32767Read-WriteRO32-bitIntegerRW 32-bitIntegerROData Type32-bitIntegerFileGroupNo.NameDescription150 Digital In CfgDigital Input ConfigureDefines operation for DI Run type parameters.“Run Edge” (0) – Control function requires a rising edge (open to close transition)in order for the drive to run.“Run Level” (1) – As long as a separate “Stop” command is not issued, the levelalone (no rising edge required) determines whether or not the drive will run.ValuesDefault:Options:0 = “Run Edge”0 = “Run Edge”1 = “Run Level”Read-WriteData TypeRW 32-bitIntegerFEEDBACK & I/ODigin Functions!ATTENTION: Equipment damage and/or personal injury may result if this parameter is used in aninappropriate application. Do not use this function without considering applicable local, national andinternational codes, standards, regulations, or industry guidelines.155 DI EnableDigital Input EnableAssigns a digital input used to enable the drive.156 DI Clear FaultDigital Input Clear FaultAssigns a digital input used to clear faults.157 DI Aux FaultDigital Input Auxiliary FaultAssigns a digital input used to force an external auxiliary fault.158 DI StopDigital Input StopAssigns a digital input used to issue a stop command.159 DI Cur Lmt StopDigital Input Current Limit StopAssigns a digital input used to perform a current limited stop.Default: 0Min/Max: 0 / 159999.15Default: 0Min/Max: 0 / 159999.15Default: 0Min/Max: 0 / 159999.15Default: 0Min/Max: 0 / 159999.15Default: 0Min/Max: 0 / 159999.15RW 32-bitIntegerRW 32-bitIntegerRW 32-bitIntegerRW 32-bitIntegerRW 32-bitIntegerPowerFlex 750-Series User Manual – Publication 750-UM001C-EN-P – September 2009