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DT9002
Finishing step
Checking the
connections
20180621-V1
Check if the cables are connected properly (have you
connected all the cables; have you connected them to the
right place; is the connection stable; do not the cable-ends
touch each other).
After you have completed the connections, put the current
loop under voltage, in such a way that the nominal 4-20 mA
current should flow in the loop. If the connection is correct,
numbers or a characters has to appear on the display.
If nothing appears on the display, most probably there is no
current flowing in the loop. Check if the current is present by
using an ampermeter.
In Ex area use Ex proof measuring instrument.
If the current value is in the 4-20 mA range, check if
everything has been done in accordance with Chapter 5.1
Connecting into the current loop.
You may check the voltage at the pins 5 and 6 of the
terminal assembly, the voltage should be a value between
1.5 and 2.2 V, while pin 6 is the positive one, if the
connection is correct. In the case of reverse polarity, the
voltage value is less than 1 V, and 5 is the positive pin.
With this step you have completed the connection of
DT9002.
17
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