Connection example

Options for the FR-A842 Serving as a High Power Factor Converter

*1Use the FR-A842 inverter converted into a high power factor converter.

*2Install a magnetic contactor for each phase.

*3Install the UL listed fuse (specified in the Instruction Manual of the FR-A8AVP) on the input side of the FR-A842 converter to meet the UL/cUL standards.

*4Do not install an MCCB or MC between the dedicated filter reactor input terminals (R/L1, S/L2, and T/L3) (a) and the converter input terminals (R4/L14, S4/L24, and T4/L34) (b). Doing so disrupts proper operation (except for the inrush current limit MC).

*5Confirm the correct voltage phase sequence between terminals R4/L14, S4/L24, and T4/L34 of the converter and terminals R, S, and T of the phase detection transformer box.

*6Do not install any MCCB between the inverter and the converter (P to P and N to N). Connecting opposite polarity of terminals P and N will damage the converter and the inverter.

*7Securely perform grounding (earthing) by using the grounding (earthing) terminal.

*8Connect the following devices to the inrush current limit MC used for each phase of the converter: one BKO-CA2573H01 (resistor without thermostat) and one BKO-CA2573H11 (resistor with thermostat) for FR-A842-08660(355K) converters or lower, and two BKO-CA2573H01 (resistor without thermostat) and one BKO-CA2573H11 (resistor with thermostat) for FR-A842-09620(400K) converters or higher.

*9The LOH signal is assigned to terminal RT in the initial status. Set "33" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign the LOH signal to another terminal.

*10The ROH signal is assigned to terminal AU in the initial status. Set "34" in any of Pr.178 to Pr.189 (input terminal functionselection) to assign the ROH signal to another terminal.

*11Select a terminal S/L2 according to the input voltage.

*12Always connect between terminals R2, RS2, T2, and TS2 of the FR-A8AVP installed on the converter and those terminals of the phase detection transformer box, respectively. Failure to do so can damage the converter when the inverter is operated.

*13Always connect between terminal RYA of the FR-A8AVP installed on the converter and an inverter terminal to which the X10 signal is assigned, and between terminal SE2 of the FR-A8AVP and terminal SD (terminal PC in the source logic) of the inverter. Failure to do so may damage the converter.

*14Use the Input terminal function selection to assign the X10 signal to an inverter terminal. The X10 signal is assigned to terminal MRS in the initial status. (Refer to the Instruction Manual of the inverter.)

The name of the option FR-A8MC is not shown in the connection diagram above because the FR-A8MC is only a package name. Instead, the diagram shows the components of the package such as the inrush current limit magnetic contactor, stepdown transformer for power source of magnetic contactor, buffer relay, mini relay, and inrush current limit resistor. For wiring details, refer to the Instruction Manual of the FR-A8AVP.