Resolver with pole pair number 0x2C43 >=2: Status bit "Absolute encoder selected" (0x2833-Bit04) is set incorrectly (corrected from V02.16.03)
Corrected from:
Servo-Inverter i700, V1: No remedy provided for V1
Servo-Inverter i700, V2: from V02.16.03.12763
Response of the new version:
Higher pole resolvers with pole pair number 0x2C43 >=2 are now correctly not evaluated as absolute encoders. SinCos encoder types with line number/period number = 1 are now evaluated as absolute encoders. The status absolute position available is only set if there is no encoder error, e.g. wire breakage. The status bits 4 and 5 in Lenze status word 2 are set accordingly for both encoder types.
What happens?
Higher-pole resolvers with pole pair number 0x2C43 >=2 are erroneously evaluated as absolute encoders. Conversely, special SinCos encoder types with line number/period number = 1 are erroneously not evaluated as absolute encoders. The corresponding status bits 4 and 5 in Lenze status word 2 are set incorrectly.
Definition Absolute Encoder: An encoder type can be used by the drive controller as an absolute encoder if it can represent the absolute position at least within one complete revolution. Status bits 4 and 5 in Lenze status word 2 indicate whether such an absolute encoder is present. For resolvers, only resolver types with pole pair number = 1, i.e. two-pole resolvers, meet this definition. Higher-pole resolvers with a pole pair number >=2 do not, however. Special SinCos encoders with line number/period number = 1 enable the absolute position to be displayed over one revolution via SinCos evaluation and thus meet the requirements for absolute encoders.
