19
Figure 2-3 Fixing with screws
2.2 Connection
2.2.1 Wiring precautions
danger
1.Do not use MTC in the following places: places with dust, lampblack, conductive dust, corrosive gas
and combustible gas; Exposure to high temperature, dew, wind and rain; There are vibration, shock
occasions. Electric shocks, fires, and misoperation can also lead to product damage and deterioration.
2.During screw hole processing and wiring, do not let metal scraps and wire tips fall into the vent hole of
the controller, which may cause fire, failure and wrong operation.
3.Remove the foreign body immediately after installation and wiring. Please cover the terminal cover of
the product before electrifying to avoid electric shock.
4.At the end of the installation of the newly purchased MTC, it is necessary to ensure that there is no
foreign body on the ventilation surface, including dust-proof paper and other packaging items, otherwise
it may lead to poor heat dissipation during operation, causing fire, failure and wrong operation.
5.Avoid wiring and unplugging cables in live state, or electric shock or circuit damage will be easily
caused.
6.Installation and wiring must be firm and reliable. Poor contact may lead to incorrect operation.
7.The input or output cables of high frequency signals and the cables transmitting analog signals should
be twiped shielded cables to improve the anti-disturbance performance of the system.
8.Please access 24Vdc power supply according to the instructions in this manual. Connecting ac power
to the terminal will burn MTC.
9.The input and output signal lines connected to MTC shall not be arranged side by side with other
high-power or high-interference lines to reduce interference.
2.2.2 Wiring instructions
User terminal input wiring is shown in Figure 2-4.
