Endress+Hauser Deltabar FMD72, Operating Instructions Manual

Page: 21 / 108

Deltabar FMD72 Electrical connection
21
7.3 Connecting the measuring unit
7.3.1 Wiring the transmitter
!
WARNING
Supply voltage switched off?
Risk of electric shock and/or explosion!
►
Switch off the supply voltage before connecting the device.
• When using the measuring device in hazardous areas, installation must comply with the
corresponding national standards and regulations and the Safety Instructions or Installation or
Control Drawings.
• All explosion protection data are given in separate documentation which is available upon request.
The Ex documentation is supplied as standard with all devices approved for use in explosion
hazardous areas.
• Devices with integrated overvoltage protection must be grounded.
• Protective circuits against reverse polarity, HF influences and overvoltage peaks are integrated.
• The supply voltage must match the power supply specified on the nameplate (see "Nameplate" (
®
ä
13))
• Switch off the supply voltage before connecting the device.
• Remove the housing cover of the terminal compartment.
• Guide cable through the gland. Preferably use twisted, screened two-wire cable.
• Connect device in accordance with the following diagram.
• Screw down housing cover.
• Switch on supply voltage.
4... 20mA
Test
Test
1
2
3
4
5
4…20 mA
Test
4... 20mA Test
6
7
8
A0017530
1 Housing
2 4 to 20 mA test signal between positive and test terminal
3 External ground terminal
4 Internal ground terminal
5 Jumper for 4 to 20 mA test signal
6 Minimum supply voltage = 12 V DC, jumper is set as illustrated in the diagram.
7 Minimum supply voltage = 13 V DC, jumper is set in "Test" position.
8 Devices with integrated overvoltage protection are labeled "OVP" (overvoltage protection) here.