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WIRING PRECAUTIONS
Perform class D grounding (grounding resistance: 100 or less) to the shield
of the twisted shield cable (refer to subsection 3.2.3).
Do not use common grounding with heavy electrical systems (refer to the
manual of the PLC main unit).
When drilling screw holes or wiring, make sure cutting or wire debris does not
enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Install module so that excessive force will not be applied to communication
connectors or communication cables.
Failure to do so may result in wire damage/breakage or PLC failure.
Make sure to affix the CAN bus connector with fixing screws.
Tightening torque should follow the specifications in the manual.
Loose connections may cause malfunctions.
Make sure to properly wire to the terminal block (CAN bus connector) in
accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit,
wire breakage, malfunctions, or damage to the product.
- The disposal size of the cable end should follow the dimensions described
in the manual.
- Tightening torque should follow the specifications in the manual.
- Twist the end of strand wire and make sure that there are no loose wires.
- Do not solder-plate the electric wire ends.
- Do not connect more than the specified number of wires or electric wires
of unspecified size.
- Affix the electric wires so that neither the terminal block nor the connected
parts are directly stressed.
Make sure to observe the following precautions in order to prevent any
damage to the machinery or accidents due to abnormal data written to the
PLC under the influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the
main circuit, high-voltage line or load line.
Otherwise, noise disturbance and/or surge induction are likely to take
place. As a guideline, lay the control line at least 100 mm (3.94") or more
away from the main circuit or high-voltage lines.
2) Ground the shield wire or shield of a shielded cable.
Do not use common grounding with heavy electrical systems (refer to
the manual of the PLC main unit).
Place the communication cable in grounded metallic ducts or conduits both
inside and outside of the control panel whenever possible.
3.1 Applicable Cable and Connector
3.1.1
Applicable connector
FX
-CAN uses a CAN bus connector. This connector is removable.
3U
For removal and installation of the CAN bus connector, refer to the following
section.
Refer to subsection 3.1.4
3.1.2
Applicable cable
Item
Applicable Cable
Cable Type
Twisted pair cable
Unshielded/Shielded
Shielded
No. of Pairs
2 pair
Conformance Standard
ISO 11898/1993
Wire Size
0.3 mm
2
to 0.82 mm
2
(AWG22 to 18)
Impedance
120
*1 When bus length is long, use thicker wire. For details, refer to the following
manual.
FX
-CAN User's Manual
3U
3.1.3
Termination of cable end
Strip 9 mm (0.35") of insulation from the end of the wire.
In case of stranded wires, use wire ferrules. Refer to the
following manual.
FX
-CAN User's Manual
3U
The tightening torque must be 0.4 to 0.5 N
m.
Do not tighten terminal screws exceeding the specified torque. Failure to do so
may cause equipment failures or malfunctions.
3.1.4
Removal and installation of CAN connector
1) Removal
Evenly unscrew both CAN connector mounting screws, and remove the
CAN connector from the module.
If the cable is attached to the connector, hold and pull the connector on the
side. Do not pull the cable.
2) Installation
Place the CAN connector in the specified position, and evenly tighten both
CAN connector mounting screws.
Tightening torque 0.4 to 0.5 N
m
Do not tighten the terminal block mounting screws beyond the specified
torque. Failure to do so may cause equipment failures or malfunctions.
3.2 CAN-Bus Wiring
3.2.1
Connecting communication cables
CAN_GND
CAN_GND
CAN_L
CAN_L
CAN_SHLD
CAN_SHLD
CAN_H
CAN_H
CAN_V+
CAN_V+
Terminating
resistor
Grounding resistance of 100 or less (Class D)
For electromagnetic compatibility (EMC), it is recommended to ground the cable shield
at both ends.
Caution
For safety, always check the potential differences between the grounding points. If
potential differences are found, proper measures must be taken to avoid damage.
3.2.2
Module wiring
For PLC wiring details, refer to the following manual.
Refer to the FX
3G
Series User's Manual - Hardware Edition
Refer to the FX
Series User's Manual - Hardware Edition
3GC
Refer to the FX
3U
Series User's Manual - Hardware Edition
Refer to the FX
Series User's Manual - Hardware Edition
3UC
FX
-
3U
CAN
FX
/
3G
3GC *1
FX
/
FX
/FX
3UC *1
3U
Series PLC
Grounding resistance of
100 or less (Class D)
Strip a part of the coating of the shielded twisted pair cable as shown subsection 3.2.3.
Ground the PLC's grounding terminal there.
*1 An FX
2NC
-CNV-IF or FX
3UC
-1PS-5V is necessary to connect the FX
an FX
3GC
/FX
3UC
Series PLC.
3.2.3
Grounding of twisted pair cable
Strip a part of the coating of the shielded twisted pair cable as shown below, and
ground at least 35 mm (1.38") of the exposed shield section.
Shielded twisted pair cable
Shield
3.2.4
Termination
®
The CANopen
network requires terminating resistors for both network ends. When
-CAN is the network end, connect the included terminating resistor (120 1/2W)
FX
3U
*1
between pin number 2 (CAN_L) and 4 (CAN_H).
3.3 Grounding
For details, refer to the following manual.
4. Specifications
DESIGN PRECAUTIONS
Make sure to have the following safety circuits outside of the PLC to ensure safe
9mm
system operation even during external power supply problems or PLC failure.
(0.35")
Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protection
circuit, an interlock circuit for opposite movements (such as normal vs.
reverse rotation), and an interlock circuit (to prevent damage to the
equipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer
error, during self-diagnosis, all outputs are turned off. Also, when an error
that cannot be detected by the PLC CPU occurs in an input/output control
block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe
machinery operation in such a case.
For the operating status of each node in the case of a communication error, see
the FX
3U
-CAN user's manual and the product manual of each node.
Erroneous output or malfunctions may cause an accident.
DESIGN PRECAUTIONS
When executing control (data changes) to an operating PLC, construct an
CAN_GND
interlock circuit in the sequence program so that the entire system operates safely.
CAN_L
In addition, when executing control such as program changes and operation
CAN_SHLD
status changes (status control) to an operating PLC, thoroughly read the manual
and sufficiently confirm safety in advance. Especially in control from external
CAN_H
equipment to a PLC in a remote place, problems in the PLC may not be able to be
CAN_V+
handled promptly due to abnormality in data transfer. Construct an interlock circuit
in the sequence program. At the same time, determine the actions in the system
Terminating
between the external equipment and the PLC for protection against abnormalities
resistor
in data transfer.
DESIGN PRECAUTIONS
Make sure to observe the following precautions in order to prevent any damage to
the machinery or accidents due to abnormal data written to the PLC under the
influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the main
circuit, high-voltage line or load line.
Otherwise, noise disturbance and/or surge induction are likely to take place.
As a guideline, lay the control line at least 100 mm (3.94") or more away from
the main circuit or high-voltage lines.
2) Ground the shield wire or shield of a shielded cable.
Do not use common grounding with heavy electrical systems (refer to the
CAN Bus connector
manual of the PLC main unit).
STARTUP AND
CAN_GND
MAINTENANCE
CAN_L
PRECAUTIONS
CAN_SHLD
Do not disassemble or modify the PLC.
CAN_H
CAN_V+
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric representative.
Turn off the power to the PLC before connecting or disconnecting any extension
cable.
Grounding mounting plate
Failure to do so may cause equipment failures or malfunctions.
or grounded DIN rail with
Do not drop the product or exert strong impact to it.
a grounding resistance of
Doing so may cause damage.
100 or less (Class D).
DISPOSAL PRECAUTIONS
Please contact a certified electronic waste disposal company for the
3U
-CAN to
environmentally safe recycling and disposal of your device.
TRANSPORTATION AND
STORAGE PRECAUTIONS
The PLC is a precision instrument. During transportation, avoid impacts larger
than those specified in the general specifications of the PLC main unit manual.
Failure to do so may cause failures in the PLC. After transportation, verify the
operations of the PLC.
4.1 Applicable PLC
Model name
FX
Series PLC
Ver. 1.00 and later (Up to 8 blocks can be extended)
3G
FX
Series PLC
*1
Ver. 1.40 and later (Up to 8 blocks can be extended)
3GC
FX
Series PLC
Ver. 2.20 and later (Up to 8 blocks can be extended)
3U
FX
Series PLC
*1
Ver. 2.20 and later (Up to 8 blocks can be extended
3UC
FX
-CAN User's Manual
3U
The version number can be checked by reading the last three digits of device D8001/
D8101.
*1 An FX
-CNV-IF or FX
2NC
3UC
FX
/FX
Series PLC.
3GC
3UC
*2 Up to 7 units can be connected to the FX
4.2 General Specifications
Items other than the following are equivalent to those of the PLC main unit.
For general specifications, refer to the manual of the PLC main unit.
Refer to the FX
Refer to the FX
Refer to the FX
Refer to the FX
Item
Dielectric Withstand Voltage
Insulation Resistance
4.3 Power Supply Specification
Internal Power Supply
4.4 Performance Specifications
Transmission Type
Applicable Function
CANopen
Services According to CiA
Standards
CANopen
Application Profiles
According to CiA
Standards
Remote Transmit Request
(RTR)
Node Number on
CANopen
Node ID
Communication Method
Supported Transmission
Speed /Maximum Bus
Length
Connection Cable
Terminating Resistor
No. of Occupied I/O Points
Applicability
This manual confers no industrial property rights or any rights of any other kind,
nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be
held responsible for any problems involving industrial property rights which may
occur as a result of using the contents noted in this manual.
Warranty
*2
)
Mitsubishi will not be held liable for damage caused by factors found not to be
the cause of Mitsubishi; opportunity loss or lost profits caused by faults in the
Mitsubishi products; damage, secondary damage, accident compensation
caused by special factors unpredictable by Mitsubishi; damages to products
-1PS-5V is necessary to connect the FX
-CAN to an
3U
other than Mitsubishi products; and to other duties.
-32MT-LT(-2) PLC.
3UC
•
This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in
a device or system used in purposes related to human life.
Series User's Manual - Hardware Edition
3G
•
Before using the product for special purposes such as nuclear power, electric
3GC
Series User's Manual - Hardware Edition
power, aerospace, medicine or passenger movement vehicles, consult with
Series User's Manual - Hardware Edition
3U
Mitsubishi Electric.
3UC
Series User's Manual - Hardware Edition
•
This product has been manufactured under strict quality control. However
Specification
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.
500V AC for one minute
Between all
t e r m i n a l s a n d g r o u n d
5M or more by 500V
terminal
DC megger
HEAD OFFICE
HIMEJI WORKS
Item
Specification
24V DC, max 110 mA
24V DC power is supplied internally from the main unit.
Item
Specification
CAN Bus network (RS-485, CSMA/CR)
®
CANopen
Node, CAN Layer 2 Node
®
CiA
®
301 V4.1
Communication
®
®
CiA
302
®
CiA
305 V2.2
®
®
Interface and Device Profile CiA
405 V2.0 for
Device and
IEC 61131-3 Programmable Devices.
®
®
Application Profile CiA
417 V2.0 for lift control
systems.
®
No support in CANopen
mode.
For support in Layer 2 mode, refer to the
FX
3U
-CAN User's Manual
Maximum 127 nodes
A total of 30 nodes can be connected to any
®
segment of the bus. Using repeaters or bridges,
Network
the total number can be extended up to 127 nodes.
Selectable from 1 to 127
Acyclic, cyclic or event driven
1 Mbps / 25 m (82')
800 kbps / 50 m (164')
500 kbps / 100 m (328'1")
250 kbps / 250 m (820'2")
125 kbps / 500 m (1640'5")
100 kbps / 600 m (1968'6")
50 kbps / 1000 m (3280'10")
20 kbps / 2500 m (8202'1")
10 kbps / 5000 m (16404'2")
Refer to subsection 3.1.2.
120 Accessory: 120 1/2W)
8 points
(taken from either the input or output points of the
PLC)
For safe use
: TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310,
JAPAN
: 840, CHIYODA CHO, HIMEJI, JAPAN
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