Operating Instructions MG3 Digital
Commissioning
76609409EN-BA-MG3D-V1_6.docx 20/82
2010-08-02
3.1.4
Establishing Connections for Displacement Measuring
Coils of various types for current measurement are provided.
The coil amplification factor is of particular importance. Please take the amplification
factor (1:1 or 1:10) from the type designation plate of the coil purchased by you or the
technical data of the coil (see separate data sheet).
There are two examples for coils in Fig.5 and Fig. 6.
Fig. 5: Flap toroid coil (example) with
(+) side marking
Fig. 6: Toroid coil (example) with (+)
side marking
Direction of current, and therefore, coil installation direction is important in order to
ensure correct current reading.
Ensure that the correct coil fitting position is selected during installation!
Fig. 7: Application example with a built-in flap toroid coil
•
Install the flap toroid coil or toroid coil in the (+) line of the current source (Fig. 7).
Ensure that the (+) side of the coil show points in the direction of the current source
(+) terminal.
•
Connect the cable for current measurement to the flap toroid coil or toroid coil.
•
Insert the 3-pole male connector in socket X21 (Fig. 2/9)
or X22 (Fig. 2/11).
