Endress+Hauser FMB70, Руководство по эксплуатации

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Deltapilot S FMB70 Electrical connection
Hauser 13
6.2 Special connection instructions
6.2.1 Supply voltage
L
WARNING
Supply voltage might be connected!
Risk of electric shock and/or explosion!
‣
When using the measuring device in hazardous areas, installation must also comply with
the applicable national standards and regulations and the Safety Instructions or
Installation or Control Drawings.
‣
All explosion protection data are given in separate Ex documentation, which is available
upon request. The Ex documentation is supplied as standard with all devices approved for
use in explosion hazardous areas.
Electronic version Jumper for 4 to 20 mA test signal in
"Test" position (as-delivered state) Jumper for 4 to 20 mA test signal in
"Non-Test" position
4 to 20 mA HART, version for
non-hazardous area 11.5 to 45 V DC 10.5 to 45 V DC
Measuring the 4 to 20 mA test signal
A 4 to 20 mA test signal can be measured via the positive and test terminal without
interruption. The minimum supply voltage of the measuring device can be reduced by
changing the position of the jumper. As a result, operation with lower supply voltages is also
possible.
To keep the measured error below 0.1 %, the ammeter should have an internal resistance of <
0.7 Ω. Observe the position of the jumper according to the following table.
Jumper position for test signal Description
Test
• Measure 4 to 20 mA test signal via positive and test terminal: possible.
(Thus, the output current can be measured without interruption via the
diode.)
• As-delivered state
• Minimum supply voltage: 11.5 V DC
Test
• Measure 4 to 20 mA test signal via positive and test terminal: not possible
• Minimum supply voltage: 10.5 V DC
6.2.2 Terminals
Supply voltage and internal ground terminal: 0.5 to 2.5 mm² (20 to 14 AWG)