TOP > Product Specifications > Interface > Terminals for External Input/Output Signals > Basic Specifications for Terminal for External Input/Output Signals Basic Specifications for Terminal for External Input/Output Signals This interface is designed to connect the product with other peripherals. Basic Specifications Connector 20 pin specialized connector (terminal M3) Signal Level Transistor output Input/Output Circuit Diagram • Precautions for inputs (X) ◦ The input terminals are intended for NPN transistor output or for connection to relays. You cannot connect an active circuit to the PNP transistor output. • Precautions for outputs (Y) ◦ Connect an active terminal (+0.1 V to +30.0 V) that is under 30 V DC and up to a maximum current of 80 mA. If the voltage exceeds 30 V, a malfunction will occur. ◦ You cannot connect an AC power source. ◦ You cannot use high-load devices that exceed a current of 80 mA (solenoids, DC motors, etc.). ◦ Operation cannot be done by connecting a negative voltage (such as -24 V). ◦ The contacts have polarity, the current flows from Yn to C. ◦ C (COM) and N (GND) are connected inside the product. Back to top