Mitsubishi Electric MELSEC iQ-R Series User Manual page 107

Section 6 SETTING AND PROCEDURE FOR OPERATION
6.3.4 Current circuit connection
A dedicated current sensor 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)
Stopper
Moving core
parting face
Moving core
locking claw
Primary cable
Protective cover
(Figure 1)
● 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.
Usable wires
size (reference)
* Size of electric wires conforms to description in the catalog of general PVC insulated wires. Thickness
of external PVC insulation is different according to the wire. Check with the external dimension diagram
of this product and make sure the wire can go through the given space.
● Use insulation wire rather than basic insulation for the primary side cable of current sensor.
● Do not ground the secondary side of the current sensor.
EMU-CT5-A
IV cable 38 mm or less
2
CV cable 22 mm or less
2
(Figure 2)
Caution
EMU-CT50-A
38 mm or less 60 mm
2
22 mm or less 60 mm
2
106
Tying band
(LINE side)
Direction
of current
Locking hole
(3 x 2)
Recommended tying band: T181 (Tyton)
Please prepare tying band yourself
(Figure 3)
EMU-CT100-A EMU-CT250-A
or less 200 mm
2
or less 150 mm
2
RE81WH
(LOAD side)
Primary cable
or less
2
or less
2