RHE26/27 Installation & Startup Guide – Doc. No. 8.2.1.06 – Ver. 1.40
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Figure 8: Digital Outputs
Connect the output of the RHE to the load. Connect the other side of the load to either GND or
to the positive supply rail. With a grounded load, the output current should be limited to 20mA
(480mW at 24V). With a load connected to the positive supply rail the output can drive up to
100mA (2.4W at 24V).
The output can drive relays directly as well. Relays should be connected between the output and
the positive supply rail.
3.2.3.2
Analog Outputs
RHE27
:
An RHE27 transmitter can be supplied with up to two 4-20 mA analog outputs. The outputs can
be connected in a passive/floating configuration or as active outputs for ground referenced loads.
Output 1 can optionally be equipped with a HART digital communications interface.
Figure 9: Digital Output with Relays
