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Revision 4
Table 7: Measurement values corresponding to device status
mA output
Status
4 ... 20 mA
Normal operation or zero/span self-test
>22 mA
Device failure, for example due to failure of the internal checks of
the device
Connecting mA output
Figure 25: mA output on the main board
Connect the sheath of a shielded cable to ground only on one end. Connecting both
ends to ground can create a ground loop.
To connect the mA output, you need:
Protective gear for electric work
Pin wrench or
1
⁄
2
-inch ratcheting socket wrench
Slotted-head screwdriver (M3)
Wrench (20 mm [0.7874 in] or adjustable)
Suitable signal cable
To connect the mA output of the device:
1.
Make sure that the device is not connected to the power supply, or that the power supply is
disconnected or isolated.
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