Network Router User Manual

Table Of Contents

14 ProLink

II Software for Micro Motion

Transmitters

Installation and Setup

3. If necessary, add a resistor to the connection as required by your transmitter (see Table 2-7).

- If no other device is connected to the primary mA output, add the resistor in parallel with

the primary mA output.

- If the primary mA output is connected to a remote device such as a DCS or a PLC with an

internal resistor (R2), ensure its value is within the range described in Table 2-7. If it is

lower than 250 Ω, add resistor R1 to the connection so that the overall resistance (R1 + R2)

is within the range described in Table 2-7.

- If your DCS or PLC does not have an internal resistor, add resistor R3 and make sure its

value is within the range described in Table 2-7

Table 2-6 Primary mA output terminals – Method 1

Transmitter

Terminals

PV + PV –

RFT9712 17 16

RFT9739 rack-mount Z30 D30

RFT9739 field-mount 17 18

IFT9701/9703 4–20 mA 4–20 mA

Model 1500/2500 21 22

Model 1700/2700 AN

Model 1700/2700 CIO

Model 2400S AN

Series 3000 panel-mount with screw-type connectors c2 a2

Series 3000 panel-mount with I/O cables 14 15

Series 3000 rack-mount c2 a2

Series 3000 field-mount 2 1

Table 2-7 Resistance requirements for HART/Bell 202 connection

Transmitter Resistance

Model 1500/2500 250–600 Ω

Model 1700/2700 AN

Model 2700 CIO

Model 2400S AN

250–600 Ω

Series 3000 (all models) 250–600 Ω

IFT9701

IFT9703

250–600 Ω

RFT9712

RFT9739

250–1000 Ω