4-4 Communication Function For the RS485 communication function, use the TM2 terminal on the control terminal block board. Control terminal block RS+ RS+ RS- RS- RP RP RS- RS- Control terminal block board 4 Functions The following wires are recommended for TM2: Single wire 0.14 to 1.5 mm 2 (If two equal-sized wires are connected to one pole: 0.14 to 0.5 mm 2 ) Stranded wire 0.14 to 1.0 mm 2 (If two equal-sized wires are connected to one pole: 0.14 to 0.2 mm 2 ) Stranded wire with solderless terminal 0.25 to 0.5 mm 2 (Example: PC-1.25 F-7 from J.S.T. MFG. Co., Ltd.) Wire strip length 5 mm Tightening torque 0.22 to 0.25 N•m (screw size:
M2) •Connection Connect the Inverters parallel to each other, as shown below. For the termination Inverter, short- circuit the RP and RS- terminals. (Also, if the RS485 communication function is used with a single Inverter, the RP and RS- terminals must be short-circuited.) Short-circuiting the RP and RS- terminals activates the termination resistor inside the control terminal block board, suppressing signal reflection. External controller RS+ RS- RP RS- RS+ RS- RP RS- RS+ RS- RP RS- 4-136 Terminal abbreviations Description RS+ Transmission/Reception (+) RS- Transmission/Reception (-) RP Termination resistor enabling terminal RS- Termination resistor enabling terminal