Mitsubishi Electric EMU4 A2, EMU4 VA2 v2 User's Manual
en
Energy Measuring Unit Extension for the system with the same voltage Energy Measuring Unit Extension for the system with the different voltage Model EMU4-A2 / EMU4-VA2 Users Manual (Digest) Before using this unit, please read both this manual and Details carefully and pay attention to safety to handle this unit correctly. Make sure that the end users read this manual and then keep the manual in a safe place for future reference. ABOUT MANUALS You can download Users manual (Details) of this unit from the following site. http://www.mitsubishielectric.co.jp/fa/download/search.do?mode=manual&kisyu=/ems
1. Features This unit is an optional device dedicated to Energy Measuring Unit (EcoMonitorPlus). Adding this unit enables measurement of multiple circuits. Model EMU4-VA2 enables measurement of the system with the different voltage.
2. Checking package contents This following items for this device and included in package. Check that no items are missing. (1) Energy Measuring unit x1 (2) Users Manual (Digest) x1
3. Safety Precautions 3.1 Precautions for Operating Environment and Conditions
This unit is premised on being used in pollution degree 2 (Note) environment. When used in higher pollution degree, protect this unit from pollution on another device side to be incorporated. Over voltage category of measuring circuit in this unit is CAT III (Note), and that of auxiliary power circuit (MA, MB) is CAT III (Note). Do not use this product in the places listed below. Failure to follow the instruction may cause malfunctions and a life decrease of product.
Places the Ambient temperature exceeds the range -5 to +55C. Places the average daily temperature exceeds +35C. Altitude exceeds 2000m. Dust, corrosive gas, saline and oil smoke exist. Places in strong electromagnetic field or places large amounts of external noise exist. Vibration and impact exceed the specifications. Places exposed to direct sunlight Places metal fragments or conductive substance are flying. Places exposed to rain or water drop. Places the Relative humidity exceeds the range 30 to 85% or places with dewfall.
This unit is the open type device, which are designed to be housed within another device for prevention of electric shock. House this unit within the device such as the control panel before use. (Indoor use) For the precautions for the compliance of the system incorporating this unit with the EMC Directives, refer to the Users Manual (Details). (Note) For the definition of the pollution degree and the over voltage category, refer to EN61010-1/2010.
3.2 Matters concerning the precaution before use Use the unit in the specified usage environment and conditions. To use this unit, Base unit (EMU4-BM1-MB, EMU4-HM1-MB, EMU4-LG1-MB,EMU4-CNT-MB) is necessary. As for Base unit, refer to Users manual (Details) of each Base unit. To set this unit, dedicated small-size display unit (EMU4-D65) is necessary. For the setting method, refer to Users manual (Details) of the display unit.
3.3 Installation and Wiring Precautions
Danger Shut off the external power supply for the unit in all phases before installing or wiring. Failure to do so may cause an electric shock or damage of
this unit. Work under the electric outage condition when installing and wiring. Failure to do so may cause electric shock, a failure of the unit, a fire etc.
Caution
Any person who is involved in the installation and the wiring of this unit should be fully competent to do this work. Secure spatial distance more than 100 mm in all directions (other than back) When tapping or wiring, take care not to entering any foreign objects such as chips and wire pieces into this unit. Check the connection diagram when wiring. Wrong wiring may cause failure of the unit, a fire or electric shock. For protection against noise, transmission lines and input/output lines shall not be placed close to or bound together with the power lines and high-voltage lines. Strip the wires with proper length. Overlong stripping length may cause short to next wire and electric shock. Shorter stripping length may cause contact failure. Take care not to short to next terminal by a filament. (Do not plate the wires with solder.) Do not connect more than two wires to one terminal of a terminal block for preventing loose contact and wires dropout. Use appropriate size of electric wires. If inappropriate size of electric wire is used, it may cause a fire due to generated heat. Tighten the screw within the specified torque. Under tightening can cause drop of the screw, short circuit or malfunction. Over tightening can damage the screw and/or unit, resulting in
drop, short circuit or malfunction. After tightening the screws, be sure to check all the screws tightened. Loose screw may cause malfunction of the unit, a fire or electric shock. Be sure to attach the terminal cover to prevent electric shock. Use the crimp-type terminal appropriated for the size of electric wires. If inappropriate crimp-type terminal is used, a wire breakage or a contact failure may occur, which may cause a
device malfunction, a failure, a burnout or a fire. FG terminal must be grounded according to the D-type ground (ground resistance is not exceed 100). Do not directly touch any conductive part of the unit. Doing so can cause electric shock, failure or malfunction of the unit. When using this product, make sure to use it in combination with the current sensor (EMU-CT***, EMU-CT***-A, EMU2-CT5, EMU2-CT5-4W). Please not to exceed the rating of this
product for input of the current sensor. For further details, please refer to the manual for the current sensor to maintain the functionality and the accuracy of this product. The dedicated current sensor (EMU-CT***, EMU-CT***-A) is used only for low voltage circuit. It cannot be used for a high voltage circuit. EMU2-CT5 and CT5-4W should be used with
the secondary side (5A) of transformer transfixed. If it is connected with a high-voltage circuit by mistake, it may cause a burnout of the device and a fire. It is critically dangerous. The dedicated current sensor has a polarity (directionality). Be careful about it when installing the unit. The wires to be connected to this unit shall be placed in a duct or fixed together by cramping. If the electric wires are not placed in the duct or cramped together, loosen wires or their
movement or careless stretch may cause a breakage of the unit or wire or a malfunction due to poor contact of electric wires. If the wires connected to this unit are strongly pulled off, it may cause a malfunction or a breakage to the unit or the wire. Do not exceed the specified voltage when doing an insulation resistance test and a commercial frequency withstand voltage test. To prevent persons with little knowledge about electric equipment from electric shock, panel must be taken either following measure.
Lock the panel so that only those who get an education about electric equipment and have sufficient knowledge can unlock, or shut off power supply automatically by opening the panel. Cover the dangerous part of this unit.
3.4 Precautions for Use This unit cannot be used for deal and proof of electric energy measurement stipulated in Measurement Act.
Caution Use this unit within the ratings specified in this manual. If it is used outside the ratings, it may cause not only malfunction or failure but also fire burnout. Do not disassemble or modify this unit. It may cause failure, malfunction, injury or fire. Do not touch the live part such as connection terminal. It may cause electric shock, electric burn injury or burnout of the device. If any exposed conductor is found, stop the operation
immediately, and take an appropriate action such as isolation protection.
3.5 Maintenance Precautions Use a soft dry cloth to clean off dirt of the unit surface. Do not let a chemical cloth remain on the surface for an extended period of time nor wipe the surface with thinner or
benzene. Check for the following items to use this unit properly for long time.
(1) Daily maintenance (a) No damage on this unit (b) No abnormality with LED (c) No abnormal noise, smell or heat
(2) Periodical maintenance (Once every 6 months to 1 year) No looseness with installation and wire connection
Caution Do periodical maintenance under the electric outage condition. Failure to do so may cause electric shock, failure of the unit or a fire. Tighten the terminal regularly to prevent a fire. In case a display unit is attached to a sensor unit, get off the display unit during maintaining or tightening terminals.
3.6 Storage Precautions To store this unit, turn off the power and remove wires, and put it in a plastic bag. For long-time storage, avoid the following places. Failure to follow the instruction may cause a failure and reduced life of the unit.
Places the Ambient temperature exceeds the range -10 to +60C. Vibration and impact exceed the specifications. Places the Relative humidity exceeds the range 30 to 85% or places with dewfall. Places exposed to rain, water drop or direct sunlight. Dust, corrosive gas, saline and oil smoke exist. Places metal fragments or conductive substance are flying.
Places the average daily temperature exceeds +35C. 3.7 Disposal Precautions
When disposing of this unit, treat it as industrial waste. 3.8 About packaging materials and this manual
For reduction of environment load, packaging materials are produced with cardboard.
4. Name and function of each part 4.1 Name of each part (1) EMU4-A2 (2) EMU4-VA2 (3) Back and right side (common to EMU4-A2 and EMU4-VA2)
LED Indicate operating condition of this unit. (See Section 4.2 Indication and functions of LEDs)
Current input terminals (1K, 1L, 2K, 2L, 3K, 3L)
Connect the secondary output of the dedicated current sensor connected to the measurement circuits current wire. (Note) For the single-phase 2-wire system, in the case of measuring two circuits in one terminal block, connect current input lines of the second circuit to 3K and 3L. (See Section 7.1 Wiring)
Voltage input terminals (P1/P1, P2/P0, P3/P3, NC/P2) Connect the voltage input wire for the measurement circuit. Connecter (for optional devices)
Connect other unit (EMU4-VA2, EMU4-A2)
IEC rail fixture
LED Indicate operating condition of this unit. (See Section 4.2 Indication and functions of LEDs)
Current input terminals (1K, 1L, 2K, 2L, 3K, 3L)
Connect the secondary output of the dedicated current sensor connected to the measurement circuits current wire. (Note) For the single-phase 2-wire system, in the case of measuring two circuits in one terminal block, connect current input lines of the second circuit to 3K and 3L. (See Section 7.1 Wiring)
External output terminals (Y1, COMY1) Connect the pulse/ contact output wire. These are the output terminals for the circuit connecting to SENSOR A.
Connecter (male)
External output terminals (Y2, COMY2)
Connect the pulse/ contact output wire. These are the output terminals for the circuit connecting to SENSOR B.
External output terminals (Y1, COMY1) Connect the pulse/ contact output wire. These are the output terminals for the circuit connecting to SENSOR A.
External output terminals (Y2, COMY2)
Connect the pulse/ contact output wire. These are the output terminals for the circuit connecting to SENSOR B.
Connecter (male) Connect other unit (EMU4-BM1-MB,EMU4-HM1- MB,EMU4-LG1-MB,EMU4-VA 2,EMU4-A2)
4.2 Indication and functions of LEDs The names and operations of LEDs are as follows.
Name Color Function Status RUN LED Red Indicate operating status of this unit. ON: Normal condition
OFF: Power off or hardware failure (Note 1) MEA. A1 LED Red Indicate measuring status of the circuit A1. ON: In the middle of measuring
OFF: Halting measurement MEA. B1 LED Red Indicate measuring status of the circuit B1. ON: In the middle of measuring
OFF: Halting measurement MEA. A2 LED (Note 2)
Red Indicate measuring status of the circuit A2. ON: In the middle of measuring OFF: Halting measurement
MEA. B2 LED (Note 2)
Red Indicate measuring status of the circuit B2. ON: In the middle of measuring OFF: Halting measurement
ALM. A1 LED Red Indicate occurrence status of upper/lower limit alert of the circuit A1.
ON: An error occurs (Note 1) Blink: Upper/lower limit alert is issued OFF: No alert
ALM. B1 LED Red Indicate occurrence status of upper/lower limit alert of the circuit B1.
ON: An error occurs (Note 1) Blink: Upper/lower limit alert is issued OFF: No alert
ALM. A2 LED (Note 2)
Red Indicate occurrence status of upper/lower limit alert of the circuit A2.
ON: An error occurs (Note 1) Blink: Upper/lower limit alert is issued OFF: No alert
ALM. B2 LED (Note 2)
Red Indicate occurrence status of upper/lower limit alert of the circuit B2.
ON: An error occurs (Note 1) Blink: Upper/lower limit alert is issued OFF: No alert
Circuit B1 The circuit connected to 1K and 1L of SENSOR B becomes circuit B1.
Circuit B2 The circuit connected to 3K and 3L of SENSOR B becomes circuit B2.
Circuit A1 The circuit connected to 1K and 1L of SENSOR A becomes circuit A1.
Circuit A2 The circuit connected to 3K and 3L of SENSOR A becomes circuit A2.
Figure 4.2
(Note 1) For details, refer to Chapter 14 Error codes of Users Manual (Details). (Note 2) For the single-phase 2-wire system, in the case of measuring two circuits in one terminal block, these indicate the measuring status of the circuit A2 or B2. (See
Figure 4.2)
5Connecting to Base unit
(1) Peel off the blank label on the right side of the Base unit.
(2) Insert the connecter (male) of the Extension unit into the connecter (female) of the Base unit and make both units stick together.
(3) Slide connection hooks (green-colored) on the top and bottom of the Extension unit to lock the unit.
Blank label
6. Attaching and removing the unit 6.1 Mounting on IEC rail 6.2 Mounting on JIS agreement type attachment
Mounting JIS agreement type attachment
Removing
Spring fitting
Attachment panel
Hook (2) Hitch 3 chases at
upper part of the module to the hook on the attachment plate
(3) Push the module down and fit in the spring fitting in chases at the lower part of the module.
(1) Push the stopper of the IEC rail above
(1) Push down the spring fitting
(2) Lift the lower part of module slowly and remove in reverse order of Attaching.
If you are considering using this unit for special purpose such as nuclear power plants, aerospace, medical care or passenger vehicles please refer to our sales representative.
(Note 1) Up to three Extension units can be connected to one Base unit. (Note 2) This unit can be connected to the Base units EMU4-BM1-MB, EMU4-HM1-MB and EMU4-LG1-MB, EMU4-CNT-MB
Caution
Work under the electric outage condition when connecting the Extension units. Failure to do so may cause electric shock, a failure of the unit, a fire etc.
EMU4-A2MODEL
MODEL EMU4-VA2
EMU4-A2MODEL
EMU4-A2MODEL
EMU4-BM1-MBMODEL
27
1
35
More than 7.3
Applicable IEC rail (35mm)
Mounting
(1) Pull IEC rail fixture downward
(2) Catch
IEC rail
(4) Push the IEC rail fixture upward
(3) Push in
Removing
(2) Pull the unit
(1) Hold the unit and pull IEC rail fixture downward
Connect other unit (EMU4-BM1-MB,EMU4-HM1- MB,EMU4-LG1-MB,EMU4-VA 2,EMU4-A2)
12. Customer Service
Please refer to "catalog" or users manual (Details) for more details. HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, Japan
11. Warranty
Caution
The charge-free warranty is effective until the earlier of 1 year after the date of your purchase or 18 months after manufacturing. Repair shall be charged for the case failures occur due to your intent or fault even during the charge-free warranty period.
Please check ALM A1 LED and ALM A2 LED turn off the light. (ALM A1 LED and ALM A2 LED lighting show errors occur)
If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
Our company shall not be liable to compensate for any loss arising from events not attributable to our company, opportunity loss and lost earning of the customer due to failure of the product, and loss, secondary loss, accident compensation, damage to other products besides our products and other operations caused by a special reason regardless of our companys predictability.
If an abnormal sound, bad-smelling smoke, fever break out from this unit, switch it off promptly and don t use it.
10. Contained harmful substances (1)
)
(2)
6
(Pb)
(Hg)
(Cd) (Cr(VI)
(PBB)
(PBDE)
SJ/T11364
GB/T 26572 GB/T26572
RoHS
:
:
7. How to wire 7.1 Wiring
Follow the wiring diagram for external connections of this unit. To use this unit, Base unit (EMU4-BM1-MB, EMU4-HM1-MB, EMU4-LG1-MB, ) is necessary. When using this unit, current sensor (EMU-CT***, EMU-CT***-A, EMU2-CT5 or EMU2-CT5-4W) is necessary. (Note) *** indicates the rated current of the current sensor (50/100/250/400/600). For the other examples, refer to Users Manual (Details).
For the same voltage system
Load side RS485 (MODBUS )
Fuse 0.5A
Current transformer (Secondary current 5Atype)
External output1
External input1
Circuit2
EMU-CT5-A 5A current sensor
Instrument transformer
K L
k l
k l
k l
External output 1
K L
K L
K L
lk
lk
K L K L K L
lk
lk lk lk
K L K L K L
k l k l k l
K L K L K L
k l k l k l
1
Power supply side
2 3 N
External output 2
Circuit3
Circuit1
This is an example of the system with Base unit EMU4-HM1-MB and Extension unit EMU4-A2 for 3P4W high voltage circuit.
For the different voltage system
Load side
RS485(MODBUS )
K L
Fuse 0.5A
Model EMU-CT***-A split current sensor (50/100/250/400/600)
1 Power source side
2
External output 1
Load side
System 1 System 2
1 Power source side
2 3
k l
K L
k l
K1 L1
K1 L1 K1 L1
KL
L3 K3 L1 K1
L3 K3 L1 K1
L3 K3 L1 K1
L3 K3 L1 K1
This is an example of 3P3W low voltage circuit. Base unit: EMU4-BM1-MB Extension unit 1: EMU4-A2 Extension unit 2: and EMU4-VA2 Extension unit 3: EMU4-A2
Circuit 2
Circuit 3
External output 1
External output 1External
output 2 External output 2
External output 2
Circuit 1
Circuit 4
Circuit 5
Circuit 6
Circuit 7
Maximum voltage of the circuit connected to EMU4-VA2 is 277 / 480V. For the circuit over this voltage, use the transformer. Using the transformer, primary voltage is configurable up to 11000V. Secondary voltage is fixed to 110V. (Special primary voltage of VT can be set up to 11000V in any, and special secondary voltage of VT can be set up to220V in any.) For MODBUS communication wiring, recommended to have the extra length wires about 200mm (When extended to B / NET transmission from MODBUS communication, use of MODBUS communication wiring is possible).
Make sure that before connecting the cable, the orientation of the current sensor is correct for attachment. K to L is the correct direction. K: power source side, L: load side EMU-CT*** and EMU-CT***-A are extendable up to 50m. EMU2-CT5 and EMU2-CT5-4W are extendable up to 11 m, using together with an extension cable. To extend the wire further, use the current transformer CW-5S(L) for
split-type instrument in combination, extending the secondary wiring on CW-5S(L) side. EMU-CT*** and EMU-CT***-A are used only for low voltage circuit. (Maximum voltage: 460V) It cannot be used for a high voltage circuit. EMU2-CT5 and EMU2-CT5-4W
should be used with the secondary side (5A) of transformer transfixed. If they are used for the circuit directly, they should be used under 200V. (Maximum voltage: 260V) 7.2 How to connect wires
[EMU4-A2] Applicable wire Tightening torque Applicable crimp-type terminal
External output terminals Stranded wire:AWG22 to16 (0.3 to 1.3mm2) Single wire:AWG22 to16 (0.65 to 1.25mm)
For M3 screw of external 0.5 to 0.6 Nm diameter below 6.1mm
[EMU4-VA2] Applicable wire Tightening torque Applicable crimp-type terminal
Voltage input terminals Stranded wire:AWG22 to16 (0.3 to 1.3mm2) Single wire:AWG22 to16 (0.65 to 1.25mm)
For M3.5 screw o0.8 to 1.0 Nm f external diameter below 7.1mm
External output terminals Stranded wire:AWG22 to16 (0.3 to 1.3mm2) Single wire:AWG22 to16 (0.65 to 1.25mm)
For M3 screw of external 0.5 to 0.6 Nm diameter below 6.1mm
Applicable wire Applicable crimp-type terminal Stranded wire: AWG20 to16 (0.5 to 1.3mm2) Single wire: AWG24 to17(0.5 to 1.2mm)
TGV TC-1.25-11T (by NICHIFU) equivalent
Caution
For protection against noise, transmission lines and input/output lines shall not be placed close to or bound together with the power lines and high-voltage lines. Keep distance as below between them. (except for the terminal block) If there is concern about the influence of noise even if the distance is as follows, we recommend using a shielded cable.
Condition Distance High-voltage line 600V or less 300mm or more Other high-voltage line 600mm or more
For the actual usage, connect the FG terminal to ground. (D-type ground: Type 3) Connect it directly to the ground terminal. Do not connect to FG terminal during the insulation resistance test and pressure test. Refer to Users manual (Details) Chapter 12 Specifications for the applying place. The current sensors dedicated to this unit EMU-CT400/600 resemble the split current transformer for general gauges CW-5SL closely in appearance. However, characteristics are
completely different. Be sure to connect the dedicated current sensor. Connecting CW-5SL to this unit directly may cause failure of the device, a burnout or a fire.
1K
1L
2K
2L
3K
3L
1K
1L
2K
2L
3K
3L
Y1 COMY1 Y2 COMY2
1K
1L
2K
2L
3K
3L
MA
P2/P0
P3/P3P1/P1
NC/P2 MB
485+ SLD X1 Y1
COMY1COMX1-584 reT
1K
1L
2K
2L
3K
3L
1K
1L
2K
2L
3K
3L
Y1 COMY1 Y2 COMY2
1K
1L
2K
2L
3K
3L
1K
1L
2K
2L
3K
3L
NC NC
NC
P2/P0 NC/P2
P1/P1 P3/P3
Y1 Y2COMY1 COMY2485+ 485- SLD Ter
1K
1L
NC
NC
3K
3L
P2 NC MB
MA1P 3P
Y1 COMY1 Y2 COMY2
1K
1L
2K
2L
3K
3L
1K
1L
2K
2L
3K
3L
(Note 1) Fuse:P405H (by Daito Communication Apparatus Co., Ltd) equivalent
K L
K L
K L
k l
k l
k l K L
K L
l k
KL
l k
KL
l k
KL
l k
KL
l k
KL
l k
KL
l k
KL
l k K L
lk
(Note) Connect the k terminal on the secondary side of the dedicated current sensor to the k terminal of the Energy Measuring Unit. Connect the l terminal on the secondary side of the current sensor to the l terminal of the Energy Measuring Unit. Perform the same processing for the 2k, 2l, 3k, and 3l terminals.
9. Specifications
Item Specifications Model EMU4-A2 EMU4-VA2
Phase-wire system Same as the unit connected to the left side Single-phase 2-wire, single-phase 3-wire, three-phase 3-wire, and three-phase 4-wire (common use)
Measurement item
Electric energy (consumption, regeneration), Current, Current demand, Voltage, Electric power, Electric power demand, Reactive power, Apparent power (Note 1), Current unbalance rate, Voltage unbalance rate, Power factor, Frequency, Harmonic current, Harmonic voltage, Reactive energy, Electric energy equivalent, Operating time, Phase angle
Electric energy (consumption, regeneration), Current, Current demand, Voltage, Electric power, Electric power demand, Reactive power, Apparent power (Note 1), Current unbalance rate, Voltage unbalance rate, Power factor, Frequency, Harmonic current, Harmonic voltage, Reactive energy, Electric energy equivalent, Operating time, Phase angle
Rating
Voltage circuit
Single-phase 2-wire, Three-phase 3-wire Same as the unit connected to the left side 110V, 220V, 440V AC
Single-phase 3-wire Same as the unit connected to the left side 110VAC(between 1-and 2-side, 2-and 3-side), 220VAC (between 1-and 3-side)/ 220VAC(between 1-and 2-side, 2-and 3-side), 440V AC (between 1-and 3-side)
Three-phase 4-wire Same as the unit connected to the left side Min: 63.5V/110V AC, Max: 277V/480V AC
Current circuit
50A, 100A, 250A, 400A, 600A AC (The dedicated split type current sensor is used. Each value refers to the current at the primary side of the current sensor) 5A AC (The dedicated split type current sensor is used. 5A current sensor is used together with the current transformer (CT), and the primary-side current is configurable up to 6000A.) Secondary-side current is up to 66.66mA AC.
Frequency 50/60Hz (Auto detect) Transient overvoltage Measuring circuit: CATIII, Auxiliary power supply: CAT III. Measurable circuit count 2 circuits (4 circuits when 2 circuits measuring setup and 1P2W wiring)
No voltage a-contact 2 output (1 point per circuit) External output
Output signal type Rated open/close voltage/current 35V DC 75mA or 24V AC 75mA (Power factor = 1)
Operating Environment
Operating temperature -5 to +55C (Under the conditions indicated in section 3.1) Operating humidity 30 to 85% RH (No condensation) Storage temperature -10 to +60C Operating altitude 2000m or below
Standard (Note 1) The number of insert and remove between the units 200 times
(Note 1) When the model is combined with a B/NET Communication Unit (ModelEMU4-CM-B), it becomes out of a conformity standard. When the model is combined with a current sensor (ModelEMU2-CT5, EMU2-CT5-4W, EMU-CT50, EMU-CT100, EMU-CT250, EMU-CT400-A, EMU-CT600-A), it conforms with the UL standard.
CE marking (EMC: EN-61326-1: 2013, Safety: EN-61010-1: 2010) UL: UL61010-1
8. D