1-8
Each component of the terminal box is described in the following table.
Name  Description
Terminal box cover  • The cover has a pressure-resistant flameproof structure.
Cover locking screw  • Be sure to tighten this when an explosion-proof model is used in a 
hazardous area.
Input signal terminal  • Labeled “I IN.”
• Connect the signal cable from the host controller.
Output signal terminal  • Labeled “I OUT.”
• Connect the signal cable for travel transmission.
• This terminal screw is not present in model AVP300/302/200/202 
(without travel transmission).
External ground terminal 
(Figure 1-5-2)
• Ground this pin in accordance with the specifications.
Internal ground terminal  • When using the device, use either the internal or external ground 
terminal.
Conduit connection (1)  • Port for wiring cables.
• When using an explosion-proof model in a hazardous area, be sure to 
use the specified flameproof cable gland (available as an option).
Conduit connection (2)  • Port through which wiring cables are pulled.
• When using an explosion-proof model in a hazardous area, be sure to 
use the specified flameproof cable gland (available as an option).
• This port is normally sealed with a blind cap.
Check pins for setup 
device 
• The device can communicate with a setup device if the connection 
hooks of the setup device communication cable are connected to these 
pins.