PowerFlex 750-Series AC Drives User Manual

3-170 Programming and ParametersFileGroupRead-WriteData TypeNameNo. DescriptionValues20 FB0 SSI CfgFeedback 0 SSI ConfigurationConfigures the communication to a SSI encoder for the feedback 0 device. Transmission format: [MSB...Position...LSB], [Error Bit]*, [Parity Bit]*.OptionsReservedReservedReservedReservedReservedReservedReservedReservedReservedReservedReservedDblWordQueryErr Bit EnblGray CodeReservedParity BitDefault 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 00 = Condition False1 = Condition TrueHOST GROUPSFeedback 0Bit 0 “Parity Bit” – If set, SSI encoder has to support a parity bit (even parity).Bit 2 “Gray Code” – Enables the gray to binary conversion of the position.Bit 3 “Err Bit Enbl” – If set, there is an error bit transmitted by the encoder.Bit 4 “DblWordQuery” – If set, a Double Word Query is executed at startup which means that the same position is transmitted twice by the encoder. Ifthe two positions are not identical, the “Comm” error bit in [FB0 Sts] is set. This bit only needs to be cleared if the encoder does not support DoubleWord Query and it does not send zeros instead of the second position (which it actually should according to the SSI specification).21 FB0 SSI ResolFeedback 0 SSI ResolutionConfigures the number of bits for the position within one revolution (resolution) ofthe SSI encoder for the feedback 0 device.22 FB0 SSI TurnsFeedback 0 SSI TurnsConfigures the number of bits for the revolutions of the SSI encoder for thefeedback 0 device.25 FB0 Lin CPRFeedback 0 Linear Encoder Counts Per RevolutionSpecifies the counts per motor revolution for a linear encoder for the feedback 0device.26 FB0 Lin Upd RateFeedback Linear Update RateSets the sample rate for the linear channel for the feedback 0 device.27 FB0 LinStahl StsFeedback 0 Linear Stahl StatusDisplays the error status of the linear Stahl encoder for the feedback 0 device.Units: BitsDefault: 13Min/Max: 8 / 32Units: BitsDefault: 12Min/Max: 0 / 16Default: 0Min/Max: 0 / 4294967295Default:Options:2 = “1.5 ms”0 = “0.5 ms”1 = “1.0 ms”2 = “1.5 ms“3 = “2.0 ms“RW 32-bitIntegerRW 32-bitIntegerRW 32-bitIntegerRW 32-bitIntegerOptionsReservedNo PositionReservedROM ErrorEPROM ErrorRAM ErrorRead Head 2Read Head 1ReservedReservedReservedOutOfRailErrReservedReservedOutOfRailAlmOptics AlarmDefault 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 00 = Condition False e1 = Condition TrueBit 0 “Optics Alarm” – Displays an alarm when fiber optics require cleaning.Bit 1 “OutOfRailAlm” – Indicates that the read encoder count is at the maximum value (524,287).Bit 4 “OutOfRailErr” – Indicates that there is no more room between the read head and the rail.Bit 8 “Read Head 1” – Indicates that the read head must be cleaned or installed correctly.Bit 9 “Read Head 2” – Indicates that the read head must be cleaned or installed correctly.Bit 10 “RAM Error” – Indicates a RAM error. Reading head needs to be repaired.Bit 11 “EPROM Error” – Indicates an EPROM error. Reading head needs to be repaired.Bit 12 “ROM Error” – Indicates a ROM error. Reading head needs to be repaired.Bit 14 “No Position” – Indicates that no position value was available. Only happens after power on or reset.PowerFlex 750-Series User Manual – Publication 750-UM001C-EN-P – September 2009