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118
Wiring CP1H CPU Units
Section 3-4
• If one phase of the power supply is grounded, connect the grounded
phase to the L2/N terminal.
• The GR terminal is a ground terminal. To prevent electrical shock, use a
dedicated ground line (2 mm
2
min.) of 100
Ω
or less.
• The line ground terminal (LG) is a noise-filtered neutral terminal. If noise
is a significant source of errors or if electrical shocks are a problem, con-
nect the line ground terminal (LG) to the ground terminal (GR) and ground
both with a ground resistance of 100
Ω
or less.
• To prevent electrical shock when short-circuiting between the LG and GR
terminals, always use a ground of 100
Ω
or less.
• Do not connect ground lines to other devices or to the frame of a building.
Doing so will reverse the effectiveness of the ground and instead have a
bad influence.
Isolating Transformer
The PLC's internal noise control is sufficient for the general noise to which
power supply lines are subjected. Ground noise can be further reduced by
providing the power supply through a 1:1 isolating transformer. Leave the iso-
lating transformer's secondary side ungrounded.
CPU Units with DC Power Supply
DC Power Supply Wiring
• Use crimp terminals or solid wire for wiring the power supply. Do not con-
nect bare stranded wires directly to terminals.
• M3 self-rising terminal screws are used. Tighten the terminal screws to
the torque of 0.5 N·m.
• To prevent noise, use a ground of 100
Ω
or less.
DC Power Supply
• Provide a power supply of 20.4 to 26.4 VDC unless there are two or more
Expansion Units and Expansion I/O Units. Provide a power supply of 21.6
to 26.4 VDC if there are two or more Expansion Units and Expansion I/O
Units.
• The maximum current consumption is 50 W per device.
• When the power supply is turned ON, the inrush current is approximately
five times the normal current.
• The GR terminal is a ground terminal. To prevent electrical shock, use a
dedicated ground line (2 mm
2
min.) of 100
Ω
or less.
+
−
COM
01
03
05
07
09
11
01
03
05 07
09 11
NC
00 02
04
06
08
10
00
02
04
06
08
10
−
+
24 VDC
Circuit protector
Upper terminal block
Ground (100
Ω
or less)
GR: Protective ground terminal
6.2 mm max.
6.2 mm max.
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...