Mitsubishi Electric MELSEC iQ-R Series User Manual page 110

Section 6 SETTING AND PROCEDURE FOR OPERATION
■ How to attach EMU2-CT5
Transfix EMU2-CT5 current sensor cable to the secondary-side wire of current transformer (/5A rated). Make
sure to use it in a correct combination with 5A current sensor conversion cable: EMU2-CB-Q5A
EMU2-CT5 has polarities. Make sure to connect to the right symbol on the terminal. Power source side: (k
side), load side: (l side).
5A current sensor
EMU2-CT5
Follow the procedure below to attach the cable to the target circuit.
(1) Slide the lock pin to the arrow
direction.
(2) Put the electric wire through the
clamp, and close the clamp again.
(3) Use your finger to hold the clamp
in the full close position, and push
the lock pin until it locks.
● The lock pin is made of metal. If you let it touch electrically charged portions, it may cause electric shock
or device failure or fire. Be careful handling the lock pin.
● Physical impact to the core may cause breakage. It may directly influence the performance. Be careful
handling the core.
● The mating surface on the core is very sensitive. Even a small foreign object on the surface may affect
the measurement performance.
● Excessive force to the core during the clamp opened may cause breakage.
Incorrect direction may cause inaccurate measurement.
● 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.
● For both the transfixing wire and the binding band for fixing the sensor,
use the size of W=2.6 mm or less. To fix them together put a binding band through a hole for fixing the
current sensor, and tie it with the cable. Do not tie it too tightly.
(Total four holes for fixing the current sensor exist on both sides of the current sensor).
5A current sensor cable
EMU2-CB-Q5A
Lock pin Primary conductor (Cable)
Caution
109
RE81WH
To terminals of power
measurement
module RE81WH
Clamp
Core
Binding band
Hole for fixing