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Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

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8 Operation8.6.3 Position ReferenceWhen the external power supply is used, the circuit will be isolated by a photocoupler. When the SERVO-PACK internal power supply is used, the circuit will not be isolated.Host controllerSERVOPACKTr1∗PL1PULS/PULSCN13 1kΩ7150Ω8+12VPhotocouplerPL2131.5 V max. at ONSIGN/SIGN1112PL318CLR/CLR15141* : Represents twisted-pair wires.IMPORTANTWhen the open-collector output is used, input signal noise margin lowers. Set the parameter Pn200.3 to 1.(3) Position Control Block DiagramA block diagram for position control is shown below.SERVOPACK (in position control)ReferencepulsePn200.0× 1× 2× 4Pn204SmoothingPn202BAPn203+-ErrorcounterDifferentialPn109FeedforwardPn202 Pn10APn107BFeed-forwardfiltertime ABiasPn203 constantPn102Kp+ ++SpeedloopPn108Bias addingwidthCurrentloopServomotorMPG signaloutputPn201Dividing× 4PGEncoder8-56

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