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119
Wiring CP1H CPU Units
Section 3-4
Note
(1) Never reverse the positive and negative leads when wiring the power sup-
ply terminals.
(2) Supply all power to the power supply terminals from the same source.
3-4-2
Wiring Built-in I/O
Wiring Precautions
Double-checking I/O
Specifications
Double-check the specifications for the I/O Units. In particular, do not apply a
voltage that exceeds the input voltage for Input Units or the maximum switch-
ing capacity for Output Units. Doing so may result in breakdown, damage, or
fire.
When the power supply has positive and negative terminals, always wire them
correctly.
Electric Wires
• AWG24 to AWG28 (0.2 to 0.08 mm
2
) power lines are recommended. Use
cable with a maximum diameter of 1.61 mm including the insulation cover-
ing.
• The current capacity of electric wire depends on factors such as the ambi-
ent temperature and insulation thickness, as well as the gauge of the con-
ductor.
• M3 self-rising screws are used for all screw terminals including terminal
screws for crimp terminal power supply wiring.
• Use crimp terminals or solid wire for wiring.
• Do not connect bare stranded wires directly to terminals.
• Tighten the terminal block screws to the torque of 0.5 N·m.
• Use crimp terminals (M3) having the dimensions shown below.
Wiring
• Wire the Units so that they can be easily replaced.
• Make sure that the I/O indicators are not covered by the wiring.
• Do not place the I/O wiring in the same conduits or ducts as high-voltage
or power lines. Inductive noise can cause errors or damage.
• Tighten the terminal screws to the torque of 0.5 N·m.
Note
(1) Never apply a voltage that exceeds the input voltage for Input Units or the
maximum switching capacity for Output Units.
(2) When the power supply has positive and negative terminals, always wire
them correctly.
(3) When required by EC Low Voltage Directive, use reinforced insulation or
double insulation on the DC power supply connected to DC-power-supply
CPU Units and I/O.
For the DC power supply connected to a DC-power-supply CPU Unit, use
a power supply with a minimum output holding time of 10 ms.
(4) Do not pull on the cables or bend the cables beyond their natural limit. Do-
ing either of these may break the cables.
6.2 mm max.
6.2 mm max.
6.2 mm max.
6.2 mm max.
Summary of Contents for CP1H-CPU - 05-2006
Page 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Page 3: ...iv...
Page 11: ...xii TABLE OF CONTENTS...
Page 15: ...xvi...
Page 19: ...xx...
Page 31: ...xxxii Conformance to EC Directives 6...
Page 71: ...40 Function Blocks Section 1 5...
Page 133: ...102 Computing the Cycle Time Section 2 7...
Page 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Page 411: ...380 Clock Section 6 8...
Page 519: ...488 Replacing User serviceable Parts Section 10 2...
Page 527: ...496 Standard Models Appendix A...
Page 535: ...504 Dimensions Diagrams Appendix B...
Page 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Page 659: ...628 PLC Setup Appendix G...
Page 665: ...634 Index work words 159 write protection 370...
Page 667: ...636 Revision History...