Table of Contents
Advertisement
6 .7 .4
Two channel, mV/THC input
The MTL5576-THC converts low-level dc signals from temperature sensors mounted in
a hazardous area, into 4/20mA currents for driving safe-area loads. The hazardous area
connections include cold-junction compensation and do not need to be ordered separately.
Performance features, including linearisation for standard thermocouple types, 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.
Top label
CH1
CH2
CONFIG
MTL5576
FLT
FLT
PWR
Figure 6 .30:
Top label
for MTL5576
Use the following LED information to understand the module status.
Status
Power ON
Insufficient voltage or Power OFF
Communication in progress
Normal working
Device failure
Channel 1 - Sensor failure/Error
Channel 2 - Sensor failure/Error
Default configuration for both channels is as shown in 6.7 except S/C alarm set OFF .
54
MTL5576-THC - Temperature Converter
Hazardous area
Safe area
+
mV
Ch2
–
+
Ch1
mV
–
Terminal
Function
THC/mV (Ch1)
1
3
THC/mV (Ch1)
4
THC/mV (Ch2)
6
THC/mV (Ch2)
8
Output –ve (Ch2)
9
Output +ve (Ch2)
11
Output –ve (Ch1)
12
Output +ve (Ch1)
13
Supply –ve
14
Supply +ve
Configuration
socket
6
7
–
5
8
mV
4/20mA
4
9
+
I
10
3
–
11
I
2
4/20mA
12
1
+
13
14
20 to 35V dc
PWR (green)
FLT (red)
ON
OFF
FLASH
ON
ON
ON
FLASH
ON
FLASH
Load
Ch2
Load
Ch1
Vs–
Vs+
STS(yellow)
OFF
OFF
ON
OFF
ON
INM 5500 Rev 11
Hide quick links:
Advertisement
Table of Contents
