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

8 Operation8.4.1 Interface Circuits8.4.1 Interface CircuitsThe following diagram shows the standard connections for a an absolute encoder mounted to a servomotor. Theconnection cables and wiring pin numbers depend on the servomotor. For details, refer to chapter 5 Specificationsand Dimensional Drawings of Cables and Peripheral Devices.Up/downcounterClearHost controllerSERVOPACK∗1∗1CN1CN2+5VSEN41 PG5V7406SG22PG0V0VBAT(+) 213 BAT (+)+Battery - BAT(-) 224 BAT (-)Serial interface Line driver PAOPScircuit33R /PAO5PA34UP/PSEdgePBOdetection R356/PBOConnectorPB36DOWNPCOshell19R /PCOPC20Shield (shell)PSOSerial interface48circuitR /PSOPS49SG10VEncoder∗2PGApplicable line driver:Texas Instruments's SN75175 or KM3486Terminating resistance R: 220 to 470 Ω∗1∗2Represents twisted-pair wires.For wiring pin numbers, refer to chapter 5Specifications and Dimensional Drawings ofCables and Peripheral Devices• SEN Signal ConnectionType Name ConnectorSettingMeaningPin NumberInput SEN CN1-4 OFF (low level) Input when power is turned ONON (high level) Input at absolute data requestThis input signal is required to output absolute datafrom the SERVOPACK.Let at least three seconds elapse after turning ON thepower before changing the SEN signal to high level.When the SEN signal changes from low level to highlevel, the multiturn data and initial incremental pulsesare output.Until these operations have been completed, the servomotorcannot be turned ON regardless of the status ofthe servo ON signal (/S-ON). The panel operator displaywill also remain “b.b.”Refer to 8.4.6 Absolute Encoder Reception Sequence.• IMPORTANTMaintain the high level for at least 1.3 seconds when the SENsignal is turned OFF and then ON, as shown in the figure on theright.+5VHost controller7406 or equivalent0VCN1SEN 4High level:About 1 mASG2100 Ω4.7 k ΩWe recommend a PNP transistor.Signal levels High: 4.0 V min. Low: 0.8 V max.SEN signalOFFON (high level)1.3 s min.SERVOPACKOFF0VON1 µ15 ms min.8-28