Chapter 15 – Installation
Before making the electrical connection, make sure the signal is applied in accordance with the technical
specifications of the equipment. For information about DC transducer input specifications, see Section 3.6 of
the Specifications Chapter 17.
5.11.1 CONNECTION DIAGRAM OF THE DC TRANSDUCER INPUTS ± 20 MA
Figure 127: Connection Diagram of DC Transducer Inputs ± 20 mA
5.12 CURRENT CLAMPS
In order to operate the equipment with the current clamps connection, it is necessary that the RA33x have
the proper analog input board (CORTEC description: Analog Input 100 mA / 115 V).
As the measuring principle is based on current, the RA’s internal jumper needs to be set to current mode. To
do so, follow the procedure described on the topic 5.9 Analog Current Inputs.
After setting the internal jumper and reassembling the device, connect the outputs of the current clamp to the
correct inputs terminals of the RA respecting the polarity of the outputs and the inputs, as shown in the figure
below.
Figure 128: Polarity of the Current Clamp Connection
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