Mitsubishi Electric Melsec Q Series User Manual page 83

7 Setting and procedure for operation
7.5.3.1 Current circuit connection
A dedicated current sensor (EMU-CT ***, EMU-CT ***-A, EMU2-CT5) is required to connect the current circuit.
■ How to attach EMU-CT5/CT50/CT100/CT250-A
1) Press the locking claw of the moving core, please open the moving core by removing the engagement (Figure
1). Before inserting the cable, check the symbols K and L to fit the current sensor in the correct direction. (The
direction from the power supply side to the load side is indicated with →.) (Figure 3)
2) After checking that the core parting faces are free from dirt, close the moving core. Push down the moving core
until the stoppers are securely locked. (Locking claw of the moving core is applied to the stopper, you hear
click.) (Figure 2)
3) Pass the tying bands into the current sensor locking holes to secure the sensor with the cable. (Figure 3)
Supplementary -----------------------------------------------------------------------
 Make sure that before connecting the cable, the orientation of the current sensor is correct for
attachment. K to L is the correct direction. K: power source side, L: load side.

Do not bend the moving core in a direction other than the operation direction (shown in Fig. 1).
The current sensor may be damaged.
 Refer to the table below for appropriate size of electric wires.
Usable wires
size (reference)
Size of electric wires conforms to what is described in the catalog of general PVC insulated
wires. Thickness of external PVC insulation is different for different wire. Check with the external
dimension diagram of this product and make sure the wire can go through the given space.
EMU-CT5-A
IV cable 38 mm or less
2
CV cable 22 mm or less
2
7 - 11
Recommended tying band : T181(Tyton)
Please prepare tying band yourself
EMU-CT50-A EMU-CT100-A
38 mm or less 60 mm or less
2 2
22 mm or less 60 mm or less
2 2
QE81WH
EMU-CT250-A
200 mm or less
2
150 mm or less
2