Hioki SM7860 Series, Инструкция по эксплуатации

Страница: 41 / 64

37
4
External Control
This chapter describes how to use the EXT I/O connector on the rear of the device to control the device.
4.1 EXT I/O Connector and Signals
WARNING
To prevent an electric shock or damage to the equipment, always observe the
following precautions when connecting the cables to EXT I/O connector:
• Always turn off the device and any devices to be connected before making
connections.
• During operation, a wire becoming dislocated and contacting another conductive
object can be serious hazard. Use bail locks to secure the EXT I/O connector.
• Ensure that devices and systems to be connected to the EXT I/O connector are
properly isolated from one another.
CAUTION
To avoid damage to the device, observe the following cautions:
• Do not apply voltage or current to the EXT I/O connector that exceeds their ratings.
• When driving relays, be sure to install diodes to absorb counter-electromotive force.
Refer to “Connector Type and Signal Pinouts” (p. 38)
4 External Control