Wiring Diagram
Original instructions
About us
Introduction
The BMX ART 0414 input module consists of a 40-pin FCN connector.
The BMX ART 0814 input module consists of two 40-pin FCN connectors.
WARNING
UNEXPECTED EQUIPMENT OPERATION
Take every precaution at the installation to prevent any subsequent mistake in the connectors. Plugging the wrong connector would cause an unexpected behavior of the application.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
Connector Pin Assignment and Sensors Wiring
This example uses a probe configuration with:
The pin assignment for the 40-pin FCN connector and the sensors wiring is shown below: 
MS+:
RTD Measure + input / Thermocouple + input 
MS-:
RTD Measure - input / Thermocouple - input 
EX+:
RTD probe current generator + output 
EX-:
RTD probe current generator - output 
NC:
Not connected 
DtC:
The CJC sensor detection input is connected to CJ+ if the sensor type is DS600. It is not connected (NC) if the sensor type is LM31.
NOTE: The CJC sensor is needed for TC only.
Cold Junction Compensation
For each block of 4 channels (channels 0 to 3 and channels 4 to 7), the external compensation of the module is performed in the TELEFAST ABE-7CPA412 accessory. This device provides a voltage in mV corresponding to:
Voltage = (6.45 mV * T) + 509 mV (where T = temperature in °C).
The overall margin of error when using this device is reduced to 1.2°C in the -5°C to +60°C temperature range.
It is possible to increase the precision of the compensation by using a 2/3-wires Pt100 probe directly connected to channels 0 and 4 (only for the BMX  ART0814) on the module or connected to the TELEFAST terminal blocks. Channel 0 is thus dedicated to the cold junction compensation of channels 1, 2 and 3. channel 4 is thus dedicated to channels 4 to 7.
It is also possible, by using a 2-wire Pt100 probe, provided the initial length of the probe is limited, to maintain channel 0 as a thermocouple input.
The wiring would then look like this:
The wiring is only valid if the channel 0 is used. If the channel 0 is not used, select a cold junction with external Pt100. The range of the channel 0 is changed to a 3-wires Pt100 probe.
The wiring would then look like this:
NOTE: For the BMX ART 0814 Module, the CJC values of channels 4 to 7 can also be used for channels 0 to 3. Therefore, only one external CJC sensor is wired on channel 4.