Precautions When Wiring; Checking Connections - Omron E5CD-B-800 Series Instruction Manual

Digital temperature controller (simple type)
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E5@D-800

Precautions when Wiring

• Separate input leads and power lines in order to prevent external
noise.
• Use crimp terminals when wiring the screw terminals.
• Use the suitable wiring material and crimp tools for crimp terminals.
• Tighten the terminal screws to a torque of 0.43 to 0.58 N·m.
E5CD-800/E5ED-800 (Screw Terminal Blocks)
Wires
Use the wire specifications given in the following table.
Recommended
Model
AWG24 to
E5CD-800 or
AWG18 (0.205 to
E5ED-800
0.823 mm
• Strip the wires on which crimp terminals will be used to the length
recommended by the crimp terminal manufacturer.
• Use shielded twisted-pair cables for signal lines to prevent the
influence of noise.
Crimp Terminals
For the E5CD-800 or E5ED-800, use the following types of crimp
terminals for M3 screws.
Although you can connect two crimp terminals with insulation sleeves
to one terminal, you cannot do so if the diameter of the insulation
sleeves is too large.
E5@D-B-800 (Push-In Plus terminal block types)
1. Connecting Wires to Push-In Plus Terminal Block
Part Names of the Terminal Block
Connecting Wires with Ferrules and Solid Wires
Insert the solid wire or ferrule straight into the terminal block until the
end strikes the terminal block.
If a wire is difficult to connect because it is too thin, use a flat-blade
screwdriver in the same way as when connecting stranded wire.
48
Stripping length
wires
6 to 8 mm (when
crimp terminals
2
)
are not used)
5.8 mm max.
5.8 mm max.
Release hole
Terminal (Insertion) hole
Ferrules and
Solid Wires
Connecting Stranded Wires
Use the following procedure to connect the wires to the terminal block.
1. Hold a flat-blade screwdriver at an angle and insert it into the
release hole. The angle should be between 10° and 15°. If the flat-
blade screwdriver is inserted correctly, you will feel the spring in
the release hole.
2. With the screwdriver still inserted into the release hole, insert the
wire into the terminal hole until it strikes the terminal block.
3. Remove the flat-blade screwdriver from the release hole.
Flat-blade screwdriver
10 to 15°

Checking Connections

• After the insertion, pull gently on the wire to make sure that it will
not come off and the wire is securely fastened to the terminal block.
• If you use a ferrule with a conductor length of 10 mm, part of the
conductor may be visible after the ferrule is inserted into the
terminal block, but the product insulation distance will still be
satisfied.
2. Removing Wires from Push-In Plus Terminal Block
Use the following procedure to remove wires from the terminal block.
The same method is used to remove stranded wires, solid wires, and
ferrules.
1. Hold a flat-blade screwdriver at an angle and insert it into the
release hole.
2. With the screwdriver still inserted into the release hole, remove the
wire from the terminal insertion hole.
3. Remove the flat-blade screwdriver from the release hole.
Flat-blade screwdriver
10 to 15°
(2)
(1)
(3)
(2)
(1)
(3)

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