Installation positions
Notice | |
Constraints regarding installation position and operating temperature range Please refer to the technical data for a terminal to ascertain whether any restrictions regarding the installation position and/or the operating temperature range have been specified. When installing high power dissipation terminals ensure that an adequate spacing is maintained between other components above and below the terminal in order to guarantee adequate ventilation! |
Optimum installation position (standard)
The optimum installation position requires the mounting rail to be installed horizontally and the connection surfaces of the EL/KL terminals to face forward (see Fig. “Recommended distances for standard installation position”). The terminals are ventilated from below, which enables optimum cooling of the electronics through convection. "From below" is relative to the acceleration of gravity.
Fig.347: Recommended distances for standard installation position Compliance with the distances shown in Fig. “Recommended distances for standard installation position” is recommended.
Installation position names
Fig.348: Mounting rail with terminal block mounted horizontally on a lateral surface- 1-A: Mounted laterally, from left to right
- 1-B: Mounted laterally, from right to left
Other installation positions
All of the other installation positions (2-A, 2-B, and 3-A, 3-B) are characterized by different positions of the mounting rail which deviate from the optimal position.
The minimum distances to the environment as specified above also apply for these installation positions.
Fig.349: Support rail with terminal block mounted vertically on a lateral surface- 2-A: Mounted laterally, from top to bottom
- 2-B: Mounted laterally, from bottom to top
Fig.350: Mounting rail with terminal block mounted on a surface facing upwards or downwards- 3-A: Mounting rail underneath, connection side faces upwards
- 3-B: Mounting rail at top, connection side faces downwards