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117
Wiring CP1H CPU Units
Section 3-4
3-4-1
Wiring Power Supply and Ground Lines
CPU Units with AC Power Supply
Wiring the AC Power Supply and Ground Lines
• Wire a separate circuit for the power supply circuit so that there is no volt-
age drop from the inrush current that flows when other equipment is
turned ON.
• When several CP1H PLCs are being used, it is recommended to wire the
PLCs on separate circuits to prevent a voltage drop from the inrush cur-
rent or incorrect operation of the circuit breaker.
• Use twisted-pair power supply cables to prevent noise from the power
supply lines. Adding a 1:1 isolating transformer reduces electrical noise
even further.
• Consider the possibility of voltage drops and the allowable current, and
always use thick power lines.
• Use round crimp terminals for AC power supply wiring.
• AC Power Supply
Provide a power supply of 100 to 240 VAC.
• Use a power supply within the following voltage fluctuation range.
Note
(1) Before connecting the power supply, make sure that the CPU Unit re-
quires an AC power supply and not a DC power supply. The CPU Unit's
internal circuitry will be damaged if AC power is mistakenly supplied to a
CPU Unit that requires a DC power supply.
(2) The power supply input terminals are at the top of the CPU Unit; the ter-
minals at the bottom of the CPU Unit output 24-VDC power for external
devices. The CPU Unit's internal circuitry will be damaged if AC power is
mistakenly supplied to a CPU Unit's power supply output terminals.
!Caution
Tighten the terminal block screws for the AC power supply to the torque of
0.5 N·m. Loose screws may result in fire or malfunction.
• Always ground the ground terminal to 100
Ω
or less to protect against
electric shock and incorrect operation from electrical noise.
MCCB
S
R
L1
L2/N COM
01
03
05
07
09
11
01
03
05 07
09
11
00
02
04
06
08
10
00
02
04
06
08
10
100 to 240 VAC at 50/60 Hz
Upper terminal block
Ground (100
Ω
or less)
GR: Protective ground terminal
LG: Functional ground terminal
Power supply voltage
Allowable voltage fluctuation range
100 to 240 VAC
85 to 264 VAC
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...