User's Manual

ECO-A-X Transmitter Board Terminals

Note: In Table 3, TB1 Terminals (Power Terminals) are non-polarized; if (+) 24VDC is connected

to TB1 bottom terminal, and (-) 24VDC connected to TB1 top terminal a loop current of 4-20mA

would still be obtained.

Sensor separation

Since the sensor must be located where gas is likely to accumulate and the controller where it

can be easily reached, it is often necessary to “separate” the controller and sensor. This is done

with the aid of the Sensor Separation kit. The Sensor Separation kit is composed of a Net Safety

Multi-purpose Junction Box and terminal strip. Refer JB-MPG-A/S in the Multi-purpose

Junction Box manual (MAN-0081) for terminal designations.

TB1 Power Terminals - non polar

TB1

Power

Connections

TB1 top

terminal

(+) 24VDC

TB1 bottom

terminal

(-) 24VDC

TB2 Sensor Terminals

Sensor Wire

Terminal

designation

White

CTR

Red

REF

Black

SEN

Table 2: Sensor Terminal connection

Table 3: Power Terminal connection

TB1 Top

terminal

TB1 bottom

terminal