Appendix A: Safety Instructions – Ver. 2.00
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A.7
Electrical connection of power supply and I/O
As all I/O and supply terminals of the RHE21 are rated for Um = 250V, there are no special rules
for installation.
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 USB interface must not be connected and used in hazardous areas.
RHE21-H*:
The RHE21-H* have internal cage clamp terminals in the XP housing.
Conductor cross-section:
0.2 – 2.5mm²
Stripping length:
6 – 9mm
RHE21-E* (ATEX/IECEx only):
The RHE21-E* have screw type terminals in the Ex e connection box.
Conductor cross-section:
0.2 – 2.5mm²
Stripping length:
6 – 9mm
Torque:
0.4 – 0.5Nm
A.8
Electrical connection to RHM and pressure sensor
Summary of Contents for RHE21
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