- 18 - ACR9000 Hardware Installation GuideAxis Connector Power SourceEach Axis (and Auxiliary Encoder) connector has a nominal +5 VDC powersource to aid application installations. The power source typically is used topower:• An external encoder• Optical inputs and/or outputs between the ACR9000 and an externaldriveTable 10 contains the electrical characteristics for the Axis-Connector powersource. Figure 1 provides a schematic of its circuit.Description Min Max UnitsContinuous current, +5V -- 150 1 mATrip current, +5V 700 1200 mAVoltage tolerance from +5V (@ 150 mA or less) 4.9 5.5 VDC1. Maximum current draw per Axis/Encoder Connector is 250 mA, not to exceed a combined1500 mA for eight axis connectors and two auxiliary encoder connectors.Note: All parameters are at the connector pin.Table 10 Axis Power Electrical CharacteristicsFigure 5 Equivalent Circuit for Axis Power SourceAxis-Connector FuseThe Axis connector has a +5V voltage source for powering an encoderand/or drive I/O, and includes a fuse, as shown in Figure 5 above. In theevent the +5V source shorts to ground, the internal re-settable fuse disablesthe +5V source. When the short-circuit condition is removed and the fusecools, the fuse automatically resets.
