Appendix A: Safety Instructions – Ver. 1.00
32
NOTE:
The intrinsically safe circuits are connected to earth; along the intrinsically safe circuits
potential equalization must exist
A.6
Installation
The RHE26 and RHE27 must be installed in-house in the safe are.
RHE26-E* and RHE27-E* are for panel mount installation.
RHE26-H1 is for DIN rail installation.
A.7
Electrical connection of power supply and I/O
All I/O and supply terminals of the RHE26/27 are rated for Um = 250V and can be connected
directly to a SPS or PLC.
National and local standards regarding electrical installations must be observed.
For information regarding function and usage of the different I/O and supply circuits refer to the
corresponding chapters of the main manual.
The supplied connectors have cage clamp or screw type terminals for:
Conductor cross-section:
0.2 – 2.5mm²
Stripping length:
6 – 9mm
A.8
Electrical connection to RHM
The figure shows the electrical connections between RHM*** -S* or –J* (connection box) and a
RHE26/27.
