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Accura 2700M Integrated Incoming-Unit Module
Mounted at the MCC incoming-unit, Accura 2700M performs the main function of the Smart Motor Management System. It measures the power consumed at the entire MCC by sensing the voltage/current of the incoming line and the power of the individual motor-unit by sending the sampled voltage data to all Accura 2750P[C] modules connected with the internal communication cable. Through the cable, it delivers/receives measurement and motor control commands and operating status data to/from multiple Accura 2750P[C] modules at the MCC. It also sends/receives those data to/from multiple Accura 2750LC[I] modules at the LOP(Local Operating Panel) through Accura 2750LCG. By sending this data to Accura 2700D, the integrated incoming-unit HMI module, it allows users to check the operation state of all motors in front of the MCC panel. It is connected to the host system through Ethernet and RS-485 communication.

Connection with Accura 2750P[C]
Transmits voltage data of the incoming line to multiple Accura 2750P[C] modules.
Collects the measurement and operational data of each motor-unit from multiple Accura 2750P[C] modules.
Internal dedicated protocol	2 ports with the same functions(UNIT1, UNIT2)
Two ports: ring connection	Communication Redundancy
Connector type	RJ45 connector
Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
Number of connected Accura 2750P[C] modules	Maximum 30(ring connection)
Communication cable length	Between Unit-Sockets	Average 3m¹
	Total ring network length	Maximum 120m
	Between unit-socket and Accura 2750P[C]	Maximum 3m
Power Measurement of MCC Incoming Line
Measures and analyzes the characteristics of the power consumed at the entire MCC by sensing voltage/current of the incoming line
Measurement Parameter
Voltage	Line-to-neutral voltage(each phase/average, maximum), Line-to-line voltage(each line-to-line/average, maximum)
	Fundamental voltage(each phase/average)
	Harmonics(each phase, up to the 50th order), THD(each phase, maximum)
	Vector diagram(phasor diagram)
	Symmetrical components(positive-, negative-, zero-sequence, maximum), Unbalance(IEC, NEMA, maximum)
	Dip(Sag), Swell
Frequency	Instantaneous, maximum, minimum
Current	RMS (each phase/average, maximum), Fundamental (each phase/average)
	Harmonics (each phase, up to the 50th order), THD (each phase, maximum), TDD (each phase, maximum)
	Vector diagram(phasor diagram)
	Symmetrical components(positive, negative, zero, maximum), unbalance(IEC, NEMA, maximum)
	Demand current(phase/average), Peak demand current(phase/average)
	Crest Factor(each phase, maximum), K-factor(each phase, maximum)
Power	Active, Reactive, Apparent(each phase/ total, maximum)
	Demand active power(each phase/total), Peak demand active power(each phase/total)
Power factor	Each phase, total
Active energy	Total value of three phases(Received, Delivered, Sum, Net)
Reactive energy	Total value of three phases(Positive, Negative, Sum, Net)
Apparent energy	Total value of three phases
External Communication with Host System
Ethernet Communication	100 Base-TX(100 Mbps/Full Duplex), Modbus TCP protocol Accura 2700M device Redundancy	2 ports with the same functions(ETHERNET1, ETHERNET2)
	Two ports: Ethernet switching, RSTP	Communication redundancy via ring connection
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
	Communication cable wiring method	Star, Daisy-chain, Ring connection
RS-485 Communication	1,200 – 115,200 bps¹, Modbus RTU protocol	1 port (Ta, Tb)
	Connector type	Screw-type terminal(pluggable)
	Communication cable	UL 2919 RS-485 1P[2P] 24 AWG
Connection with Accura 2700D
Communication with the HMI module	100 Base-TX(100 Mbps/Full Duplex) Internal dedicated protocol	1 port(DISPLAY A2700D)
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat.5e FTP(F/UTP)
	Communication cable length	3 m (It comes with Accura 2700D.)
	Power supply through the Ethernet communication cable
Connection with Accura 2750LCG
Communication with the LOP control module	Internal dedicated protocol	2 ports with the same functions(A2750LCG-1, A2750LCG-2)
	2 ports	Accura 2750LCG device redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP
	Communication cable length	Maximum 300 m
Power Supply
Rating voltage(Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us

1. If the total cable length in a ring topology does not exceed 120 m, the maximum allowable cable length between units is 20 m.
2. At 115,200 bps, a master can communicate with up to 16 slave devices, and the maximum distance between the master and the slave is 600 m.

Accura 2700M Integrated Incoming-Unit Module

Power Supply
Connector name	L+, N-, G(Earth Ground)
Connector type	Screw-type terminal(pluggable)
Wire specifications	2.1 - 3.5 mm² (14 - 12 AWG)
Rating voltage(Us)	110 - 240 V AC 50/60 Hz, 110 - 300 V DC
Operating voltage range	0.8 x Us - 1.1 x Us
Rating consumption power	Maximum 17 VA(AC 220 V, 25°C) in connection with Accura 2700D with the charged super capacitor
Rating insulation voltage(Ui)	300 V (at pollution degree 2)
Rating impulse withstand voltage(Uimp)	4 kV
Inrush current	Peak 31 A, under duration 1msec (AC 220 V)
	Peak 11 A, under duration 200usec (DC 110 V)
External input fuse capacity	2 A, 500 V
Accepted instantaneous power outage time	Minimum 10 seconds(built-in super capacitor)
Voltage Input
Connector name	V1, V2, V3, VN
Connector type	Terminal block M4
Wire specifications	2.1 - 5.0 mm² (14 - 10 AWG)
Measuring range (Accuracy guaranteed)	AC 65 - 300 V direct L-N ( line-to-neutral voltage)	Accuracy IEC 61557-12 Class 0.5
	AC 110 - 520 V direct L-L ( line-to-line voltage)
Minimum measured value	AC 5V direct L-N (line-to-neutral voltage)
Rated voltage	520 V
Rated insulation voltage(Ui)	520V (Overvoltage category III, pollution degree 2)
Rated impulse voltage(Uimp)	8 kV
Frequency measurement	42 - 69 Hz
Impedance	6 MΩ(L-N: V1/V2/V3-Vn)
Burden	0.01 VA/Phase @220 V
Current Input
Connector name	I1, I2, I3, IN
Connector type	Terminal block M4 (Internal Busbar)
Wire specifications	2.1 - 5.0 mm² (14 - 10 AWG)
Rated current	5 A @ CT 5A
	1 A @ CT 1A
Maximum input current	10 A @ CT 5A (twice the rated current)
	2 A @ CT 1A (twice the rated current)
Measuring range (Accuracy guaranteed)	50 mA – 10 A @ CT 5A	Accuracy IEC 61557-12 Class 0.2
	50 mA – 2 A @ CT 1A
Minimum measured value	20 mA @ CT 5 A (The minimum settable value is 5 mA.)
	5 mA @ CT 1 A (The minimum settable value is 5 mA.)
Sampling	256 samples/cycle
Amount of overcurrent	1,000 % of rated current, for 1 second	200 % of rated current, continuous
Burden	Maximum 0.01 VA/phase @ 10 A
Communication with the Host System
Ethernet communication	100 Base-TX(100 Mbps/Full Duplex)	2 ports(ETHERNET1, ETHERNET2) (Function of each ports are same)
	Modbus TCP Protocol
	Accura 2700M device redundancy supported
	2ports: Ethernet switching¹, RSTP²	Support for communication redundancy by ring setup
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP ³
	Communication cable length	Maximum 100m
	Communication cable connection method	Star, Daisy-chain, Ring
	Max. number of connected devices(Daisy-chain)	20
RS-485 communication	1,200 - 115,200 bps, Modbus RTU Protocol	1 port(Ta, Tb)
	Connector type	Screw-type terminal(pluggable)
	Communication cable	UL 2919 RS-485 1P[2P] 24AWG
	Communication cable length	Maximum 1,219 m(4,000 ft)
	Maximum connecting device	32 per Bus⁴
Connection with Modules
Connection with Accura 2700D, the HMI module	100 Base-TX(100 Mbps/Full Duplex) Internal dedicated protocol	1 port(DISPLAY A2700D)
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP(F/UTP)⁵
	Communication cable length	3 m
	Power supply via the communication cable
Connection with Accura 2750P[C] the motor protection[control] module through the Unit-Socket	Internal dedicated protocol	2 ports with the same functions (UNIT1, UNIT2)
	2 ports: UNIT1 / UNIT2 ring connection	Support for communication redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat 5e FTP, STP, SFTP³
	Number of connected Accura 2750P[C] modules	Maximum 30(ring connection)
	Cable length between Accura 2700M and Unit-Socket or between Unit-Sockets	Average 3m⁶
	Total cable length in ring connection	Maximum 120 m
	Cable length between unit-socket and Accura 2750P[C]	Maximum 3 m
Connection with Accura 2750LCG	Internal dedicated protocol	2 ports with the same functions(A2750LCG-1, A2750LCG-2)
	2 ports used to connect 2 Accura 2750LCG modules	Support for Accura 2750LCG device redundancy
	Connector type	RJ45 connector
	Communication cable	Ethernet cable Cat.5e FTP, STP, SFTP³
	Communication cable length	Maximum 300 m per port
Management Function
Management of Accura 2750P[C]	Maximum number of connectable modules in a ring connection: 30 units
	Management function	Performs the server function of the MCC for the host system's requests
		Automatic Unit ID assignment, automatic recognition of the withdrawal and insertion of the motor-unit
		Transmits the Incoming-unit voltage data
		Collects the measurement and operational status data of each module
		Provides module setup information via Accura 2700D and communication
		Sends the DO control commands of the module
		Transmits Accura 2750PC's control logic data through communication
		Supports the re-insertion of Accura 2750PC after power outage/recovery
Management of Accura 2750LC[I]	Maximum number of modules connected through Accura 2750LCG: 30 units (15 units per ring connection, support for 2 ring connections)
	Management function	Transmits the current, power and operational status data of the motor-unit
		Transmits the control commands of the motor-unit
Event	Monitoring Item	Voltage dip/swell

1. The built-in Ethernet switch allows Ethernet connection between Accura 2700M modules without a separate external switch.
2. RSTP(Rapid Spanning Tree Protocol), IEEE 802.1D-2004.
3. FTP(Foiled Shielded Twisted Pairs), STP(Braided Shielded Twisted Pairs), SFTP(Braided Foiled Shielded Twisted Pairs)
4. At 115,200 bps, a master can communicate with up to 16 slave devices, and the maximum distance between the master and the slave is 600 m.
5. It is provided with the product. FTP(F/UTP): Foiled Shield Twisted Pair
6. If the total cable length in a ring topology does not exceed 120 m, the maximum allowable cable length between units is 20 m.

General Specifications

Certification and Standard
UL	UL 61010-1 3rd edition, UL 60947-4-1
CE	EN 55011:2009 +A1:2010, EN 61326-1:2013, EN 61000-3-2:2014, EN 61000-3-3:2013
KC	KN 32, KN 35
CCC	GB/T 14048.4-2010
Environmental Condition
Operating temperature	-20 — 65 °C (-4 — 149 ℉)
Storage temperature	-40 — 85 °C (-40 — 185 ℉)
Operating humidity	5 — 95 % (non-condensing)
Operating altitude	Up to 2,000 m
Dust Proof and Water Proof
Accura 2700M	IP20	IEC 60529
Vibration
Accura 2700M, Accura 2700D, Accura 2750P[C], Accura 2750INV/VOL, Accura 2750D[C/CI], Accura 2750LCG, Accura 2750LC, Unit-Socket, Bridge-Socket	10 - 150 Hz, 20 m/s² (Panel mounting)	IEC 60068-2-6
Shock
All modules	15 g / 11 ms	IEC 60068-2-27
Heat Resistance
All product cases	V0	UL 94
	960°C	IEC 60695-2-11
Membrane Accura 2750D[C/CI] LCD Window	V2	UL 94
	650 °C	IEC 60695-2-11
EMC Immunity	IEC 61326-1, IEC 6100-3-2, IEC 61000-3-3
Electrostatic discharge immunity	8 kV / air	IEC 61000-4-2
	4kV / contact
Radiated radio-frequency electromagnetic field immunity	10 V/m	IEC 61000-4-3
Electrical Fast Transient/Burst	2 kV/5 kHz(power)	IEC 61000-4-4
	1 kV/5 kHz(signal)
Surge immunity	2 kV(line-earth)	IEC 61000-4-5
	1 kV(line-line)
Immunity to conducted disturbances induced by radio-frequency field	10 V	IEC 61000-4-6
Power frequency magnetic field immunity	30 A/m	IEC 61000-4-8
Voltage dips, short interruptions and voltage variations immunity	0 %, 1 cycle	IEC 61000-4-11
	40 %, 10/12 cycles
	70 %, 25/30 cycles
	80 %, 250/300 cycles¹
EMC Emission	EN 55011
Conducted emission and radiated emission	Class A Group
Item	Weight	Dimensions
Accura 2700M	610 g	75.0W x 157.0H x 94.0D

1. Short interruptions

-	Voltage IEC61557-12 Class 0.5
-	Current IEC61557-12 Class 0.2
-	Power IEC62053-22 Class 0.5S
-	Demand, Peak Demand
-	Harmonics, THD, TDD, Phasor, Unbalance

-	Ethernet 2-port[Switch]
-	Ring connection[RSTP protocol]