GE AF-300 P11 User Manual

Contents

2-14 Data subject to change without notice 7/07. © 2007 GE Drives(2) Digital input terminals (FWD, REV, X1 to X9, PLC,and CM)1. Digital input terminals (e.g., FWD, REV, X1 to X9) aregenerally turned on or off by connecting or discon-necting the line to or from the CM terminal.If digital input terminals are turned on or off byswitching the PLC’s open collector output using anexternal power supply, a resulting bypass circuit maycause the drive to malfunction. To prevent a malfunc-tion, connect the PLC terminal as shown in Fig. 2-3-11.Fig. 2-3-12 The Control Wiring RouteFig. 2-3-13 Securing Positions for Inverter Control Circuit Wiring (40 HP or more)Fig. 2-3-11 Prevention of Bypass Current by External Power2. When using a contact input, a high-quality relay withreliable contacts must be used.(3) Transistor output terminals (Y1 to Y4, CMY)1. These terminals have a circuit configuration as shownin Table 2-3-3, "Transistor Output". Confirm thepolarity of the external power supply.2. To connect a control relay, connect a surge absorbingdiode to both ends of its exciting coil.(4) Sink or Source Logic Selection.1. Set SWI for Sink or Source Connection to the PLC.The factory default setting is Sink and this instructionmanual explains Sink logic function only.2. When you need to connect source type logic, refer toBasic Connection Diagram Fig. 2-3-3 and Fig. 2-3-4and Technical Information Manual. (Sink Logic iscommonly used in the USA and Source Logic iscommonly used in Europe.)(5) Others1. To prevent a malfunction as a result of noise, controlterminal cables must be placed as far as possiblefrom the main circuit cables.2. The control cables inside the inverter must besecured to prevent direct contact with the main circuit(e.g., main circuit terminal block).wiringCable tiesCablebindingHole ACable bindingHole B(6) Wiring of control circuit (inverter of 40 Hp or more)1. Pull out the control circuit wiring along the left panelas shown in Fig. 2-3-12.2. Secure the cable to cable binding hole A (on the leftwall of the main circuit terminal block) using a cable-tie(e.g., Insulock). The cable-tie must not exceed 0.14"(3.5mm) in width and 0.06" (1.5mm) in thickness.3. When the optional PC board is mounted, the signallines must be secured to cable binding hole B.WARNINGControl lines generally do not have enhancedinsulation. If the insulation of a control line isdamaged, the control signals may be exposed tohigh voltage in the main circuit. The Low VoltageDirective in Europe also restricts the exposure tohigh voltage. Electric shock may resultCAUTIONThe inverter, motor, and cables generate noise.Check that the ambient sensors and devices donot malfunction. Accident may result.