User Manual of A90 Series Inverter RS485 communication interface of host + terminal - terminal GND A+ GND A- A+ GND A- A- A+ GND A- A+ GND OFF OFF OFF S5/S1 ON Inverter S5/S1 Inverter S5/S1 Inverter S5/S1 Inverter Connection to the host via RS485/RS232 adapter for communication: Fig. 3-16 Wiring of Communication Terminals of Multiple Inverters Inverter A+ RS232 communication A- RS485/RS232 adapter interface of OFF GND host S5/S1 Fig.
3-17 Communication Terminal Wiring 3.3.8 Wire and screw dimensions of control circuit In order to reduce the interference and attenuation of the control signal, the control signal connection cable should be less than 50 m long, and the distance between the control signal connection cable and power line should be greater than 30 cm. Use the twisted-pair shielded cable when analog signals are externally inputted. It is recommended to use the wire with a diameter of 0.5-1 mm 2 in the control circuit. The terminal block of the A90 series inverter is composed of through-type control circuit terminals. Install it with the PH0 Phillips screwdriver. The 43