Mitsubishi Electric EMU4-BD1-MB, Manual

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7.Configurations/Wiring Precautions 7.Configurations/Wiring Precautions
Connection Configurations Wiring Precautions
Name Model
EcoMonitorLight
［ Standard Model ］
EMU4-BD1-MB
Amount
1
1 Split-type Current Sensor EMU-CT***
（ 50/100/250/400/600 ）
Name Model
EcoMonitorLight
［ Standard Model ］
EMU4-BD1-MB
Amount
1
2 Split-type Current Sensor EMU-CT***
（ 50/100/250/400/600 ）
Name Model
EcoMonitorLight
［ High Performance Model ］
EMU4-HD1-MB
Amount
1
2
Split-type Current
Sensor
EMU-CT***
（
50/100/250/400/600
）
Note:
●
The cable (electrical wire) for between
EMU-CT***
and the Split-type Current Sensor
is provided by the customer. Check the
wiring precautions on p. 26 for the cable
(electrical wire) used.
●
If installing to a low-voltage (600 V or less)
circuit, it is not necessary to connect the
secondary electrical circuit of the voltage
transformer to ground.
Name Model
EcoMonitorLight
［ Standard Model ］
EMU4-BD1-MB
EMU2-CT5
Amount
1
1
Split-type Current Sensor
EMU2-CB-Q5B
1
5A Current Sensor Cable
Name Model
EcoMonitorLight
［ High Performance Model ］
EMU4-HD1-MB
EMU2-CT5
Amount
1
1
Split-type Current Sensor
EMU2-CB-Q5B 1 5A Current Sensor Cable
For EMU4-BD1-MB
1P2W (For low-voltage circuit) 1P2W (For low-voltage circuit) 1P3W/3P3W (For low-voltage circuit) 1P3W/3P3W (For low-voltage circuit)
3P3W (For high-voltage circuit) 3P3W (For high-voltage circuit) 3P4W (For high-voltage circuit) 3P4W (For high-voltage circuit)
1P2W (For high-voltage circuit) 1P2W (For high-voltage circuit) 1P3W/3P3W (For low-voltage circuit) 1P3W/3P3W (For low-voltage circuit)
3P3W (For high-voltage circuit) 3P3W (For high-voltage circuit)
Name Model
EcoMonitorLight
［ High Performance Model ］
EMU4-HD1-MB
EMU2-CT5
Amount
1
1
Split-type Current Sensor
EMU2-CB-Q5B 1 5A Current Sensor Cable
Name Model
EcoMonitorLight
［ High Performance Model ］
EMU4-HD1-MB
EMU2-CT5-4W
Amount
1
1
Split-type Current Sensor
EMU2-CB-Q5B-4W 1 5A Current Sensor Cable
MODBUS
®
RTU（RS485）Communication
Measuring Unit
・
Do not place transmission or input/output signal wires close to or bound together with
power or high-voltage lines in order to prevent noise interference. If installing transmission
or input/output signal wires next to power and high-voltage lines, maintain the separation
distances shown on the right table. (Except for terminal blocks.)
●
Before connecting the cable, make sure that the split-type current sensor is appropriately installed with the correct orientation. K => L is the correct orientation.
K: Power source side; L: load side
●
EMU-CT50, 100, 250, 400, and 600 are used only for low-voltage circuits (Maximum voltage: 460 V). They cannot be used for a high voltage circuit. Use EMU2-
CT5 and EMU2-CT5-4W transfixed the secondary side (5A) of the current transformer. They can only be used directly in a circuit that is 200 V or less (max. voltage
of 260 V).
●
The maximum voltage of a circuit directly connected to this unit is 260 V for EMU4-BD1-MB, or 277/480 V for EMU4-HD1-MB. Always be sure to use a
transformer for circuits exceeding this voltage. The value for the primary voltage of the transformer can be specified up to 6,600 V when using a transformer for
circuits.
●
Mitsubishi Electric recommends having an extra length of approximately 20 cm for MODBUS
®
communication wiring.
●
Be careful not to touch the projecting parts of the terminal block cover when screwing the terminals at both ends of a terminal block.
●
Refer to the following if using external inputs or outputs.
Connection of MODBUS ® communication terminals (485+,
485-, SLD, and Ter):
1. Use shielded twisted pair cables for transmission wires.
(Refer to p. 16 for recommended cables.)
2. Connect terminating resistance (120 Ω) to both ends of
devices connected to MODBUS ® transmission lines.
Terminating resistance of 120 Ω can be achieved by
short-circuiting terminals “485-” and “Ter” of this unit.
3. Connect to ground by using thick electrical wires so that
low impedance is achieved.
4. Do not place MODBUS ® communication signal wires close
to or bound together with high-voltage lines.
5. Ground the SLD terminal at one end.
Condition
Power lines of 600 V or less
Other power lines
Distance
300 mm or more
600 mm or more
・ For actual usage, connect the frame GND terminal to ground (D-type ground). Connect it directly to the ground terminal.
・
Do not connect to frame GND terminal during insulation resistance or voltage resistance testing.
●
Use compatible solderless terminals. Refer to the compatible solderless terminals described in below table.
●
Use electrical wires as described in below table, and tighten the terminal screws according to the torques described below.
120Ω
Terminating
Resistance
120Ω
Terminating
Resistance
MODBUS ® RTU （ RS485 ） LAN
or
USB
Measuring Unit PC
OR
PLC
Measuring Unit
Max. amount of connected units: 31
Measuring Unit
Non-voltage Contact
Use a type appropriate for
5V 7 mA DC switching.
X1
COM
X
External Input
For contact input
External Input
For contact input
Non-voltage Contact
Use a type appropriate for
5V 7 mA DC switching.
X1
COM
X
Transmitter
External Input
For pulse input
External Input
For pulse input
35V 75 mA DC
or 24V 75 mA AC
(Power factor 1)
Y1
COM
Y
Relay
External Output
For contact output
External Output
For contact output
35V 75 mA DC
or 24 V 75 mA AC
(Power factor 1)
Y1
COM
Y
Counter
External Output
For pulse output
External Output
For pulse output
For EMU4-HD1-MB
Power source side
EMU-CT*** Model
Split-type Current Sensor
（ 50/100/250/400/600 ）
EMU-CT*** Model
Split Current Sensor
（ 50/100/250/400/600 ）
Load Side
Power source side
Power source side
Power source side
Power source side
Power source side
Power source side
EMU-CT*** Model
Split-type Current Sensor
（
50/100/250/400/600
）
Load Side
Load Side
Load Side
Load Side
Load Side
Load Side
Current Transformer
(Secondary Current 5A Part)
Current Transformer
(Secondary Current 5A Part)
Current Transformer
(Secondary Current 5A Part)
Current Transformer
(Secondary Current 5A Part)
5A Current Sensor
EMU2-CT5
5A Current Sensor
EMU2-CT5
5A Current Sensor
EMU2-CT5
5A Current Sensor
EMU2-CT5-4W
External Outputs
External Inputs
External Outputs
External Inputs
External Outputs
External Inputs
External Outputs
External Inputs
External Outputs
External Inputs
5A Current Sensor Cable
EMU2-CB-Q5B
5A Current Sensor Cable
EMU2-CB-Q5B
5A Current Sensor Cable
EMU2-CB-Q5B
5A Current Sensor Cable
EMU2-CB-Q5B-4W
CAUTION
Product Lineup
Specifications
Examples of EcoMonitorLight Applications
External View
Names and Functions of Each Part
Connection Configurations /Wiring Precautions
Communication Unit Wiring and Setting Procedures
Energy measuring devices
Model Name/ Specifications
Safety Precautions
Device Installation Procedures
Features
Memo
Product Lineup
Specifications
Examples of EcoMonitorLight Applications
External View
Names and Functions of Each Part
Connection Configurations /Wiring Precautions
Communication Unit Wiring and Setting Procedures
Energy measuring devices
Model Name/ Specifications
Safety Precautions
Device Installation Procedures
Features
Memo
［EMU4-BD1-MB］ ［EMU4-BD1-MB］
Auxiliary power and voltage input terminal
Current input and input/output terminal
Compatible wire
AWG24-16 (Single/Stranded)
AWG22-16 (Single/Stranded)
Tightening torque
0.8N ・ m
0.5
〜
0.6N
・
m
Compatible solderless terminal
For M3 screws with an external diameter of 5.6 mm or less
For M3 screws with an external diameter of 5.6 mm or less
Auxiliary power and voltage input terminal
Current input and input/output terminal
［EMU4-HD1-MB］ ［EMU4-HD1-MB］
Compatible wire
AWG26-14 (Single/Stranded)
AWG22-14 (Single/Stranded)
Tightening torque
0.8 〜 1.0N ・ m
0.5
〜
0.6N
・
m
Compatible solderless terminal
For M3.5 screws with an external diameter of 5.6 mm or less
For M3.5 screws with an external diameter of 5.6 mm or less