52
6.7.3 MTL5576-RTD - Temperature Converter
Two channel, RTD/potentiometer input
The MTL5576-RTD converts signals from resistance temperature detectors (RTDs) mounted
in a hazardous area, into 4/20mA currents for driving safe-area loads. The MTL5576-RTD is
compatible with 2- and 3-wire RTD inputs.
Performance features, including input type and characterisation, ranging, monitoring, testing
and tagging are selected using
PCS45 software, which is
loaded onto a personal computer and
connected via the PCL45USB serial link - see Section 6.9
.
Hazardous area Safe area
Terminal Function
1
RTD input (Ch1)
2 RTD input (Ch1)
3 3–wire RTD input (Ch1)
4 RTD input (Ch2)
5 RTD input (Ch2)
6 3–wire RTD input (Ch2)
8 Output –ve (Ch2)
9 Output +ve (Ch2)
11 Output –ve (Ch1)
12 Output +ve (Ch1)
13 Supply –ve
14 Supply +ve
Top label
Use the following LED information to understand the module status.
Status PWR (green) FLT (red) STS(yellow)
Power ON ON
Insufficient voltage or Power OFF OFF
Communication in progress FLASH
Normal working ON OFF OFF
Device failure ON ON
Channel 1 - Sensor failure/Error ON FLASH OFF
Channel 2 - Sensor failure/Error ON FLASH ON
Default configuration for both channels is as shown in 6.7 except S/C alarm set OFF.
Figure 6.29:
Top label
for MTL5576
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