User-Input and System-Input Circuits

The following two pages show examples of the user-input and system-input circuit configurations and connections of the parallel I/O board. The maximum allowable capacity for the total of Mini I/O, Hand I/O and Parallel I/O of the internal source is 1.3A. Use the internal source within this allowable range.

1. Either an external power supply type or built-in power type output card is available for the PLC. However, an external power supply type requires an additional power source (24V) to be installed. Power capacity is 15W or more.
2. When controlling two or more robots with a single PLC using the internal power source of the robot controller, a PLC output card should be set for each robot.
3. A proximity switch or a relay contact may also be connected directly to the input terminal of the parallel I/O board. In such a case, use the power input to pins 45 to 48 and 93 to 96. A two-wire photoelectric switch or proximity switch can be connected if its leakage current is 0.8 mA or less.
4. Use a multi-wire shielding cable for the purpose of protecting the devices from external noise. Ground it to the robot controller.