Point-to-Point Connections

The BMEAHO0412(C) eX80 HART analog output module supports point-to-point 4-20 mA wiring connections to field instruments, including actuators and transmitters. You can make the connection to the input module using a 20-pin terminal block (BMX FTB 20•0), a pre-assembled cord set (BMX FTW •01S), or TELEFAST accessories.

The output module provides 4-20 mA current loop power.

Output Module Pinout

The BMEAHO0412(C) eX80 HART analog output module present the following 20-pin design, to which you can connect a terminal block, a pre-assembled cord set, or TELEFAST cable:

BMEAHO0412(C) with 2-Wire or 4-Wire Transmitter

This example illustrates how to connect the output module to a either a 2-wire or a 4-wire transmitter. Field power is provided to the transmitter only in the 4-wire design:

1 2-wire or 4-wire transmitter

2 4-20 mA current loop, with arrows indicating direction of current flow

3 Field power supply (for 4-wire design only)

4 Protective ground

5 Secondary HART (hand-held)