Emerson 1700 Output Wiring Model 2700 Configurable I/O Transmitters, Channel configuration

Chapter 6

Output Wiring – Model 2700 Configurable I/O

Transmitters

6.1Overview

This chapter explains how to wire outputs for Model 2700 transmitters with the configurable input/outputs board (output option code B or C).

Note: If you don’t know what outputs option board is in your transmitter, see Section 1.4.

Output wiring requirements depend on how you will configure the transmitter terminals. The configuration options are shown in Table 6-1and Figure 6-1.

If Channel B is configured as a frequency output or discrete output, it can also be configured to use either internal or external power. Channel C can be configured to use either internal or external power, independent of its output configuration.

•“Internal power” means that the terminals are powered automatically by the transmitter. The output wiring instructions do not include power setup and power wiring.

•“External power” means that the terminals must be connected to an independent power supply. The output wiring instructions include power setup and power wiring.

Note: The terms “active” and “passive” are sometimes used to describe internally and externally powered outputs.

It is the user’s responsibility to verify that the specific installation meets the local and national safety requirements and electrical codes.

6.2Channel configuration

The six terminals are divided into three pairs, and called Channels A, B, and C. Channel A is terminals 1 and 2; Channel B is terminals 3 and 4; and Channel C is terminals 5 and 6. Variable assignments are governed by channel configuration. Table 6-1and Figure 6-1show how each channel may be configured, and the power options for each channel.

You can use a HART Communicator or ProLink II software to configure channels. To configure channels, see the manual entitled Series 1000 and 2000 Transmitters Configuration and Use Manual.

Note: You cannot configure the following combination: Channel B = discrete output, Channel

C = frequency output. If you need both a frequency output and a discrete output, use the following: Channel B = frequency output, Channel C = discrete output. For more information, see the manual entitled Series 1000 and 2000 Transmitters Configuration and Use Manual.

Output Wiring – Intrinsically Safe

Output Wiring – Configurable I/O Output Wiring – Fieldbus/PROFIBUS

Specifications

Installation Manual 41