Common Precautions On Terminals For Control; Wire Size And Tightening Torque For Control Circuit Terminal - Panasonic AMK3000P22 Installation Manual

4.4 Common Precautions on Terminals for Control

Circuit
Precautions on wiring
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· For wiring of terminals for control circuit, strip specified length of insulation coating
before connecting.
· Loosen terminal screws and insert wires from bottom of the terminal block, and
tighten screws to specified tightening torque.
· Any loose connection could cause wire to come off and lead to malfunction. Also,
over-tightening could cause short-circuit due to broken of screws or the unit, thus
leading to malfunction.
· Use shielded cables for all control signal lines and separate them from power lines or
high-voltage circuits (20cm or more).
· Wiring length of control signal lines should be within 30m.
· Since input signals of control circuit are feeble, use dedicated contact for feeble
signals to avoid poor contact during contact input.

Wire size and tightening torque for control circuit terminal

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Terminal Screw
symbol size
A，B，C
M3
1 to AR
· Screwdriver ： Small-size ○ － screwdriver
(Thickness of the edge: 0.4mm/ Width of the edge: 2.5mm)
· Terminal block for main curcuit ：
Terminal block for control circuit (Relay output/Signal input/output) ： The maximam
number of the conductors ： 2 *1
*1 The maximam number of the conductors should be made in the reach of the
suitable electric wire size.
Precautions on wiring
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Observe the following items to prevent wire breakage.
· Do not damage the core wire when tearing the insulation layer off.
· Connect the core wire together.
· Do not lift up the welded part of core wire. It may be broken by vibration.
· Do not apply force to cables after wiring.
· If the tightening direction of calbe in terminal block is CCW, it is wrong.
Remove the cable, and confirm the terminals before reconnect it.
（※）
※Insert the calbe here.
Tightening orque
N · m
0.3 to 0.4
Wire size
2
0.25mm to 0.75mm
(AWG24 to AWG18)
· Stripped length of wir e sheath
CW
Stripped
length of
cable sheath
2
6mm
CCW
20