Honeywell SmartLine RMA801, Руководство пользователя

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Revision 2 RMA803 Remote Indicator User's Guide 10
2.4 Wiring a Remote Indicator
2.4.1 Overview
The Remote Indicator is designed to operate in normal 4-20mA analog mode with 4-20 mA /HART
enabled transmitters or DE mode for Honeywell SmartLine transmitters STT250/STT700 in digital and
analog modes.
For improved noise performance, it is recommended to provide earth ground for both transmitter and
RMA housing.
2.4.2 Terminal Block
The RMA801 has 3 terminals. Following table provides the connection details-
Three screw terminals suitable for wirings up to (16AWG)
•
Shielded, twisted-pair cable such as Belden 9318 or equivalent must be used for all signal/power
wiring.
•
The cable shield must be connected at only one end of the cable. Connect it to the power supply
side and
leave the shield insulated at the transmitter side and RMA side.
Loop Terminals 5 & 6 shall be connected in series with the 4-20 ma loop for both analog and DE
modes. Additionally, third wire (Terminal 9) is required for DE communication in DE mode only.
Loop wiring for analog and DE mode is shown in figure below.
Figure 9: Remote Indicator connected on the negative side of loop (analog mode)
Terminal No. Description
5 Loop +ve
6 Loop -ve
9 DE COMM