Installation Guide

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Connecting the Gas Detector PPM reading to the Controller

The Gas Detection PPM analog output signal (mA factory default) may be connected to a controller AI terminal and read on the

Modbus RTU controller network. The actual AI controller terminal the AO terminal from the gas detection unit will depend on the

conﬁguration of the EKE 400 controller. The control AI can be viewed on the software CoolConﬁg during controller conﬁguration

and the correct terminal can then be located and wired to from the gas detection AO terminal X54.1. See example below where AI2

is to be used.

Controller Modbus registers for PPM level

The PPM level may be read of the EKE 400 controller Modbus network (if not using the gas detection units Modbus network) and

will of course depend on the EKE 400 controller and terminal used. The following Modbus registers are where the PPM values can be

read (depending on the wiring & controller conﬁguration).

Gas Detector Documentation

Further information about using the menus can be found in the GDA Application Guide:

Link

Further installation information about installing the GDA can be found in the GDA Installation Guide: Link

Further installation information about the Modbus functionality can be found in the GDA Modbus Communication Guide: Link

The gas detection terminal and Modbus registers to be noted for these purposes are as follows:

Fig. 19

Table. 09

Table. 10

Gas detector AO terminals for PPM level

4 EKE 400 Panel 2 EKE 400 Panel

PPM AO terminal X54.1 X54.1

2 EKE 400 Controller Panel 4 EKE 400 Controller Panel

Modbus

EKE 400

Controller 1

Terminal

EKE 400

Controller 2

Terminal

EKE 400

Controller 1

Terminal

EKE 400

Controller 2

Terminal

EKE 400

Controller 3

Terminal

EKE 400

Controller 4

Terminal

1 1005 X150.1 X450: 1 X150.1 X250.1 X350.1 X450: 1

2 1006 X150.2 X450: 2 X150.2 X250.2 X350.2 X450: 2

3 1007 X150.3 X450: 3 X150.3 X250.3 X350.3 X450: 3

4 1008 X150.4 X450: 4 X150.4 X250.4 X350.4 X450: 4