Nidec Leroy-Somer D700 Instruction Manual

D700
Digital voltage regulator
Installation and maintenance

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Table of contents
0. TERMS AND EXPRESSIONS........................................................................................................................................ 6
1. General Instructions ................................................................................................................................................. 7
1.1. Identity sheet..................................................................................................................................................... 7
1.2. General overview of the product ...................................................................................................................... 7
1.3. Technical characteristics ................................................................................................................................... 8
1.3.1. Components ............................................................................................................................................... 8
1.3.2. Operating values......................................................................................................................................... 9
1.4. Safety devices and general warning symbols.................................................................................................. 12
1.4.1. General information ................................................................................................................................. 13
1.4.2. Use............................................................................................................................................................ 13
1.4.3. Transportation, storage............................................................................................................................ 13
1.4.4. Installation................................................................................................................................................ 13
1.4.5. Electrical connection ................................................................................................................................ 14
1.4.6. Operation.................................................................................................................................................. 14
1.4.7. Service and maintenance ......................................................................................................................... 14
1.4.8. Protection of components........................................................................................................................ 14
2. Installation instructions.......................................................................................................................................... 15
2.1. Layout of the space housing the AVR.............................................................................................................. 15
2.2. Mounting ......................................................................................................................................................... 15
2.3. Connections..................................................................................................................................................... 17
2.4. Wiring precautions .......................................................................................................................................... 31
2.5. Handling........................................................................................................................................................... 32
3. Installation instructions.......................................................................................................................................... 33
3.1. Warning symbols ............................................................................................................................................. 33
3.2. Description of manual controls and signalling ................................................................................................ 33
3.2.1. Overview of the HMI ................................................................................................................................ 33
3.2.2. LED behaviour........................................................................................................................................... 34
3.2.3. “User” mode............................................................................................................................................. 34
3.2.4. Messages .................................................................................................................................................. 37
3.2.5. Alarms....................................................................................................................................................... 37
3.3. Description of operating and runtime modes................................................................................................. 38
3.3.1. Regulation modes..................................................................................................................................... 38
3.3.2. Control of modes and information........................................................................................................... 41
3.3.3. Protection devices .................................................................................................................................... 41
3.3.4. Related functions...................................................................................................................................... 41
3.4. Anomalies and incidents ................................................................................................................................. 41
3.5. Replacing a faulty AVR..................................................................................................................................... 43
4. Setup instructions................................................................................................................................................... 44
4.1. General parameter-setting information.......................................................................................................... 44
4.2. Set the HMI Interface parameters................................................................................................................... 44
4.2.1. Set the menu “0” page parameters ......................................................................................................... 44
4.2.2. “Super User” mode................................................................................................................................... 46

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4.2.3. Parameter modification in “Super user” mode........................................................................................ 46
4.2.4. Return to “User” mode from “Super user” mode.................................................................................... 48
4.3. PC software...................................................................................................................................................... 49
4.3.1. Software installation ................................................................................................................................ 49
4.3.2. Home form ............................................................................................................................................... 51
4.3.3. Description of the banner and tabs.......................................................................................................... 51
4.3.4. Communication with the D700 ................................................................................................................ 54
4.3.4.1. USB .................................................................................................................................................... 54
4.3.4.2. Ethernet............................................................................................................................................. 54
4.3.5. “Configuration” window........................................................................................................................... 56
4.3.6. “Oscilloscope” window............................................................................................................................. 64
4.3.6.1. Curves ................................................................................................................................................ 64
4.3.6.2. Trigger................................................................................................................................................ 66
4.3.6.3. Cursors............................................................................................................................................... 67
4.3.6.4. Transient test..................................................................................................................................... 68
4.3.6.5. Open a curve or an oscilloscope display configuration..................................................................... 69
4.3.6.6. Save a curve or an oscilloscope display configuration...................................................................... 69
4.3.6.7. Change the plotting area background............................................................................................... 69
4.3.7. “Monitor” window ................................................................................................................................... 70
4.3.7.1. Display units ...................................................................................................................................... 70
4.3.7.2. Graph................................................................................................................................................. 71
4.3.7.3. Gauges ............................................................................................................................................... 71
4.3.7.4. Capability curve................................................................................................................................. 72
4.3.7.5. I/O...................................................................................................................................................... 72
4.3.7.6. Temperatures .................................................................................................................................... 73
4.3.7.7. Synchronization ................................................................................................................................. 73
4.3.7.8. AVR status and faults......................................................................................................................... 73
4.3.7.9. Change the size of an object ............................................................................................................. 74
4.3.7.10. Delete an object .............................................................................................................................. 74
4.3.7.11. Save a monitor configuration.......................................................................................................... 75
4.3.7.12. Open a monitor configuration......................................................................................................... 75
4.3.8. “Harmonic analysis” window ................................................................................................................... 76
4.3.9. Create a new configuration...................................................................................................................... 77
4.3.9.1. Step 1: Description of the alternator ................................................................................................ 78
4.3.9.2. Step 2: AVR wiring ............................................................................................................................. 78
4.3.9.3. Step 3: Definition of the under excitation limit ................................................................................ 80
4.3.9.4. Step 4: Definition of the over excitation limit................................................................................... 81
4.3.9.5. Step 5: Definition of the stator current limit..................................................................................... 82
4.3.9.6. Step 6: Definition of the protection devices ..................................................................................... 83
4.3.9.7. Step 7: Setting the ramp.................................................................................................................... 89
4.3.9.8. Step 8: Voltage regulation................................................................................................................. 90
4.3.9.9. Determination of the regulation modes ........................................................................................... 95
4.3.9.10. Step 9: Voltage match circuit .......................................................................................................... 95
4.3.9.11. Step 10: Regulation of the generator power factor:....................................................................... 96
4.3.9.12. Step 11: Regulation of generator kVAr ........................................................................................... 98
4.3.9.13. Step 12: Regulation of power factor at one point on the grid...................................................... 100
4.3.9.14. Step 13: Regulation of the field current (manual mode) .............................................................. 102
4.3.9.15. Step 14: Setting the PID gains ....................................................................................................... 104
4.3.9.16. Step 15: I/O management ............................................................................................................. 105
4.3.10. Curve functions..................................................................................................................................... 106

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4.3.10.1. Overview........................................................................................................................................ 106
4.3.10.2. Example of curve functions........................................................................................................... 107
4.3.11. Logic gates ............................................................................................................................................ 108
4.3.11.1. Overview........................................................................................................................................ 108
4.3.11.2. Examples of gate programming .................................................................................................... 110
4.3.12. Data logger ........................................................................................................................................... 112
4.3.13. Access to files on SD card ..................................................................................................................... 114
4.3.14. Ethernet................................................................................................................................................ 115
4.3.14.1. Network configuration .................................................................................................................. 115
4.3.14.2. Managing e-mails .......................................................................................................................... 116
4.3.15. Setting the D700 time........................................................................................................................... 116
4.3.16. Synchronization .................................................................................................................................... 117
4.3.17. Grid code .............................................................................................................................................. 119
4.3.17.1. Voltage measurement monitoring................................................................................................ 119
4.3.17.2. Grid code profile monitoring......................................................................................................... 120
4.3.17.3. Stator current monitoring ............................................................................................................. 120
4.3.17.4. Pole slipping monitoring................................................................................................................ 121
4.4. Comparison window...................................................................................................................................... 122
4.5. Print reports .................................................................................................................................................. 123
4.6. Excel Export ................................................................................................................................................... 123
5. Maintenance instructions..................................................................................................................................... 124
5.1. Warning symbols ........................................................................................................................................... 124
5.2. Preventive maintenance instructions ........................................................................................................... 124
6. Reycling instructions............................................................................................................................................. 125
7. APPENDICES.......................................................................................................................................................... 126
7.1. Diagram of D700 with standard support plates............................................................................................ 126
7.2. Diagram of D700 with variant plates............................................................................................................. 127
7.3. Vector permutations ..................................................................................................................................... 128
7.4. AVR priority ................................................................................................................................................... 129

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0. TERMS AND EXPRESSIONS
VT
Power transformer, in this manual a voltage transformer used both for the power supply and for
measuring the voltage.
CT
Current transformer, used for measuring the current.
PMG
Permanent Magnet Generator.
AREP
Auxiliary windings installed in the machine which are used to supply the AVR with power. They
often consist of 2 windings: the first “H1”which is affected by voltage variations, the second “H3”
which is affected by current variations.
Booster
All current transformers used as a source of power for the AVR.

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1. General Instructions
1.1. Identity sheet
The D700 AVR has been manufactured by
MOTEURS LEROY SOMER
Boulevard Marcellin Leroy, CS 10015
16915 ANGOULEME Cedex 9
France
Tel: [phone]
LEROY SOMER reference: 5067495
KATO ENGINEERING reference: 5089419
Optional mounting plate kit: 40036453
1.2. General overview of the product
This manual describes how to install, use, set up and maintain the D700 AVR.
The purpose of this AVR is to regulate alternators with a field current of less than 25 A in continuous
operations, and 50 A maximum in the event of short-circuit for 10 seconds maximum.
1
Its design is in accordance with mounting in a generator terminal box or a control cabinet. It is required, at a
minimum, to follow the local protection and safety standards, especially those specific to electrical
installations for voltages of 300 VAC phase/neutral maximum.
2
It takes the form of a compact unit with a set of connectors on 3 of its sides, a heatsink on its rear panel and a
graphic LCD display unit with interface buttons, and USB/Ethernet connectors on the front.
1
These values are given for a temperature of 25°C. See the detailed technical specification for the full range of values.
2
A set of mounting brackets supplied with the AVR, is required to mount the AVR to the back of the cabinet or in the
terminal box.

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The D700 AVR consists of a number of function blocks:
•A power bridge (this supplies a field current)
•A measuring circuit for the various measuring signals such as voltage, current
•A set of digital and analog I/O: for control of regulation modes, operating information, correcting references
•A set of connectors
•A set of communication modes for dialogue and remote parameter-setting
•A display unit and interface buttons for dialogue and local parameter-setting
Various additional features can be combined with the D700:
•6 Pt100 temperature sensors
•1 incremental encoder input for the rotor angular position
•1 slot for inserting a HMS fieldbus communication card (optional, if requested by the customer)
•1 dedicated serial port for a remote HMI if applicable (optional, in development)
•1 dedicated serial port for an external power bridge (optional, with MENTOR MP drive LEROY SOMER)
•1 dedicated serial port for redundancy between two D700s (optional, in development)
•1 optional port for a dedicated D700 module (option in development)
1.3. Technical characteristics
1.3.1. Components
The D700 AVR is a digital voltage regulator used to control the alternator field current using separate
control loops. The regulation mode is managed either by parameter-setting, or via the D700 digital inputs,
or via the various communication modes.
These regulation modes are:
•Voltage regulation
•With or without quadrature droop to allow parallel machine operation (1F)
•With or without cross-current compensation
•With or without load compensation
3
•Matching of the machine voltage and grid voltage prior to connection to a grid (called “3F”or “U=U”)
•Power factor regulation, only when the alternator is connected to a grid (2F)
•kVAr regulation, only when the alternator is connected to a grid
•Regulation of cos phi at the installation delivery point (as much as the drive system capacity allows),
from an analog input (remote measurement mode by a converter supplied by the customer) or by
directly calculating the power factor at the delivery point.
4
•Regulation of the field current, or manual mode, which allows direct control of the field current value
3
Quadrature droop, cross-current and load compensation cannot be enabled at the same time and require the use of an
optional current transformer.
4
Obligation to have the Grid code VTs and Grid code current measurement CT placed at the delivery point and wired on the D700.

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The D700 can also be used to:
•Adjust the reference for the regulation mode in progress, using:
•up/down volt-free contacts
•an analog input (4-20 mA, 0-10 V, ±10 V, Potentiometer)
•Monitor 6 Pt100 temperature sensors
•Limit the minimum field current delivered to the exciter field
•Limit the maximum field current delivered to the exciter field
•Limit the maximum stator current limit
•Detect loss of phase
•Withstand a sudden short-circuit for 10 seconds maximum in AREP, PMG or Shunt + booster
•Protect the alternator in the event of a rotating diode trip
•Monitor trips and support electrical networks (Grid Code)
•Monitor signals (data logger, event logger)
The various trip, regulation mode and measurement data items can be delivered to the 12 digital outputs
and/or 4 analog outputs (4-20 mA, 0-10 V, ±10 V).
In order to simplify wiring operations and exchanges with a higher-level control system, a 100baseT
Ethernet link is available. A communication module can be added as an option.
1.3.2. Operating values
•Alternator voltage sensing:
•3 phases without neutral, 3 phases with neutral, 2 phases or 1 phase with neutral
•Three-phase range 0-230 VAC or 0-530 VAC (120% max. 2 minutes)
•Consumption < 2 VA
•Grid code voltage sensing:
•3 phases without neutral, 3 phases with neutral, 2 phases or 1 phase with neutral
•Three-phase range 0-230 VAC or 0-530 VAC (120% max. 2 minutes)
•Consumption < 2 VA
•Stator current measurement by CT:
•1 or 3 phases
•Range 0-1 A or 0-5 A (300% max. 30s)
•Consumption < 2 VA
•Grid code voltage measurement:
•1 phase
•Range 0-1 A or 0-5 A (300% max. 30s)
•Consumption < 2 VA
•Cross-current measurement
•1 phase
•Range 0-1 A or 0-5 A (300% max. 30s)
•Consumption < 2 VA
•Power supply:
•AC:
•4 terminals for PMG, AREP, SHUNT
•2 independent circuits
•Range 50-277 VAC (115% max. 2 minutes)
•Consumption max < 3000VA

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•DC (preloading not managed):
•Range 50-400 VDC (110% max. 2 minutes)
•Consumption max < 3000VA
•Booster
•Managed by an external module (optional), connected to the DC power supply.
•Rated 0-25 A (< 400 VDC)
•Short-circuit 50A max. at 25°C (< 400 VDC)
•Field excitation
•Rated 0-25 A
•Short-circuit 50A max. at 25°C
•Field winding resistance > 4 ohms
•Auxiliary supply:
•Range 18-35 VDC
•Consumption < 1 A
•Frequency measurement
•Range 30-400 Hz
•Regulation accuracy: +/-0.25% of the average of the three phases on a linear load, with harmonic
distortion less than 5%
•Voltage adjustment range: 0 to 150% of the rated voltage by means of volt-free contacts or an analog
input
•Quadrature droop adjustment range: -20% to 20%
•Under frequency protection: integrated, adjustable threshold, slope adjustable from 0.5 to 3 x V/Hz in
steps of 0.1 V/Hz
•Excitation ceiling: adjustable by configuration at 3 points
•Environment: ambient temperature from -40°C to +65°C, relative humidity of less than 95%, non-
condensing, mounted in a cabinet or in a terminal box without excessive vibration
•AVR parameters set using software xxx supplied with the product or via communication interfaces.
•Dimensions (excluding connectors)
•Height: 258 mm (10.15")
•Width: 162.5 mm (6.38")
•Depth: 109 mm (4.29")
•Mounting: Diagram on next page excluding mounting terminals
•Weight: 3.09 kg
•Conformity to standards
•EMC: IEC 61000-6-2, IEC 61000-6-4 and IEC 60255-26
•Protection relay safety: IEC 60255-27
•Humidity: IEC 60068-1 and test in accordance with IEC 60068-2-14
•Dry heat: IEC 60068-2-2
•Damp heat: IEC 60028-2-30
•Cold: IEC 600068-2-1

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1.4. Safety devices and general warning symbols
For the user’s own safety, the D700 must be connected to an approved earth using the earth terminal shown
below. The tooling for this connection is not included with the D700. A tightening torque of 2.5Nm +/- 0.5Nm
must be applied to the screw.
Note: All 0V of electronic boards are connected to the earth
It is essential to comply with the power connection diagrams recommended in this manual.
The D700 includes devices which, in the event of problems, can de-energize or over excite the generator. The
generator itself can also become jammed for mechanical reasons. Finally, voltage fluctuations or power cuts
may also cause the unit to stop.
The D700 which is the subject of this manual is designed to be integrated in an installation or electrical
machine, and can under no circumstances be considered to be a safety device. It is therefore the responsibility
of the machine manufacturer, the designer of the installation or the user to take all necessary precautions to
ensure that the system complies with current standards, and to provide any devices required to ensure the
safety of equipment and personnel (especially direct contact with connectors when the AVR is running).
LEROY-SOMER declines all responsibility in the event of the above recommendations not being observed.
The various interventions described in this manual are accompanied by recommendations or symbols to alert
the user to potential risks of accidents. It is vital that you understand and comply with the various warning
symbols below.
•Throughout the manual, this symbol warns of consequences which may arise from inappropriate use of the
AVR, since electrical risks may lead to material or physical damage as well as constituting a fire hazard.

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•This symbol warns of electrical danger to personnel:
1.4.1. General information
The D700 AVR may contain unprotected live parts, as well as hot surfaces, during operation. Unjustified
removal of protection devices, incorrect use, faulty installation or inappropriate operation could represent
a serious risk to personnel and equipment.
For further information, consult the documentation.
All work relating to transportation, installation, commissioning and maintenance must be performed by
experienced, qualified personnel (see IEC 364, CENELEC HD 384 or DIN VDE 0100, as well as national
specifications for installation and accident prevention).
In these basic safety instructions, qualified personnel means persons competent to install, mount,
commission and operate the product and possessing the relevant qualifications.
1.4.2. Use
D700 voltage regulators are components designed for integration in installations or electrical machines.
When integrated in a machine, commissioning must not take place until it has been verified that the
machine comply with directive 2006/42/EC (Machinery Directive). It is also necessary to comply with
standard EN 60204, which stipulates in particular that electrical actuators (which include voltage
regulators) cannot be considered as circuit-breaking devices and certainly not as isolating switches.
Commissioning can take place only if the requirements of the Electromagnetic Compatibility Directive
(EMC 2014/30/EU) are met.
The voltage regulators meet the requirements of the Low Voltage Directive 2014/35/EU. The harmonized
standards of the DIN VDE 0160 series in connection with standard VDE 0660, part 500 and EN 60146/VDE
0558 are also applicable.
The technical characteristics and instructions concerning the connection conditions specified on the
nameplate and in the documentation provided must be observed without fail.
1.4.3. Transportation, storage
All instructions concerning transportation, storage and correct handling must be observed.
The climatic conditions specified in this manual must be observed.
1.4.4. Installation
The installation and cooling of equipment must comply with the specifications in the documentation
supplied with the product.
The D700 must be protected against excessive stress. In particular, there must be no damage to parts
and/or modification of the clearance between components during transportation and handling. Avoid
touching the electronic components and any live parts.
The D700 contains parts which are sensitive to electrostatic stress and may be easily damaged if handled
incorrectly. Electrical components must not be exposed to mechanical damage or destruction (risks to
health!).

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1.4.5. Electrical connection
When work is performed on D700s which are powered up, national accident prevention specifications must
be respected.
The electrical installation must comply with the relevant specifications (for example conductor cross-
sections, protection via fused circuit-breaker, or/and connection of protective conductor). More detailed
information is given in this manual.
Instructions for an installation which meets the requirements for electromagnetic compatibility, such as
screening, earthing, presence of filters and correct insertion of cables and conductors, are also given in this
manual. These instructions must be followed in all cases, even if the AVR carries the CE mark. Adherence to
the limits given in the EMC legislation is the responsibility of the manufacturer of the installation or the
machine.
For EU application : Instrument transformers shall provide basic insulation according to the requirements
of IEC 61869-1, " Instrument transformers –Part 1: General requirements " and IEC 61869-2, " Additional
requirements for current transformers"
For US application: Instrument transformers shall provide basic insulation according to the requirements of
IEEE C57.13, "Requirements for Instrument Transformers," and IEEE C57.13.2, "Conformance Test
Procedure for Instrument Transformers."
1.4.6. Operation
Installations incorporating D700s must be fitted with additional protection and monitoring devices as laid
down in the current relevant safety regulations: law on technical equipment, accident prevention
regulations, etc. Modifications to the D700 parameters using control software or the HMI are permitted.
Active parts of the device and live power connections must not be touched immediately after the D700 is
powered down, as the capacitors may still be charged. In view of this, the warnings fixed to the voltage
regulators must be observed.
During operation, all doors and protective covers must be kept closed.
1.4.7. Service and maintenance
Refer to the manufacturer's documentation.
Our technical support service will be pleased to provide you with any additional information you may
require.
This manual is to be given to the end user.
1.4.8. Protection of components
The AVR auxiliary power supply, which sources the product's internal power supplies, is essential for AVR
operation. It should therefore be connected permanently and should be protected by 1 A slow-blow fuses.
Similarly, both the AC and DC AVR power supplies, which are used to create the field current, should be
protected by fast-blow fuses or circuit-breakers.

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2. Installation instructions
2.1. Layout of the space housing the AVR
It should always be fitted vertically, and 50 mm minimum clearance must be provided around the AVR so as to
allow air to flow around the back of it.
Ventilation, cooling or even heating system may be needed to keep the AVR within the environmental limits
described earlier.
NOTE: If you wish to integrate components which do not comply with the above minimum prerequisites,
please consult technical support.
2.2. Mounting
The D700 does not have integrated mounts. A set of feet needs to be added for the AVR to be attached at the
back of the cabinet. These feet are inserted on each side in the heatsink slide rails, at the top and bottom of
the D700.
Figure 1: Location of heatsink slide rails
50 mm (1.97")
50 mm (1.97")
50 mm (1.97")
50 mm (1.97")

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Two foot part numbers are available. The diagrams are available in the appendix.
Note: Don't hesitate to contact technical support to have additional mounting feet made.
Step 1: Insert the foot in the slides
Step 2: Fit the retaining screws
Standard feet
Variant feet

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2.3. Connections
The D700 must be connected to the various measurement, power and control signals to be able to perform its
regulation functions:
•Grid code voltage measurement
5
:
Figure 2: Grid voltage sensing connection
Voltage transformers are mandatory if the alternator voltage measurement is higher than 480 VAC rms
phase-to-phase (686 VAC rms maximum for 10 seconds), or 277 VAC rms between phase and neutral.
Connection
Electrical schematic
Phase/Neutral
Phase/Phase
3-Phase
5
The connector intermediate contacts are not connected.
N
L3
L2
L1

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Connection
Electrical schematic
3-Phase/Neutral
NOTE: The grid code voltage measurement connection must match the grid code current
measurement transformer mounting phase which is mounted on phase L2. If this wiring is not
complied with, the resulting power and power factor calculations will be incorrect. The CT phase angle
can however be used to correct them if measurement is not possible on the same phase as the CT. It
also depends on the phase direction of rotation.
For greater accuracy, there are 2 possible measurement ranges:
Alternator voltage measurement
Measurement range
Phase/Neutral
Phase/Phase
115 VAC rms max.
200 VAC rms max.
200 V
346 VAC rms max.
530 VAC rms max.
600 V
•Alternator voltage measurement
6
:
Figure 3: Grid code voltage sensing connection
Voltage transformers are mandatory if the alternator voltage measurement is higher than 480 VAC rms
phase-to-phase (686 VAC rms maximum for 10 seconds), or 277 VAC rms between phase and neutral.
6
The connector intermediate contacts are not connected.
N
W
V
U

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Connection
Electrical schematic
Phase/Neutral
Phase/Phase
3-Phase
3-Phase/Neutral
NOTE: The alternator voltage measurement connection must match the alternator current
measurement transformer mounting phase(s). If there is only one current transformer, it should be
mounted on phase V. If this wiring is not complied with, the resulting power and power factor
calculations will be incorrect. It also depends on the direction of rotation.
NOTE 2: If necessary, see the appendix for examples of vector permutations.
For greater accuracy, there are 2 possible measurement ranges:
Alternator voltage measurement
Measurement range
Phase/Neutral
Phase/Phase
115 VAC rms max.
200 VAC rms max.
200 V
346 VAC rms max.
530 VAC rms max.
600 V

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•Temperature measurement inputs
Figure 4: Temperature sensor connections
2-wire and 3-wire Pt100 temperature sensors can be connected:
Connection
Electrical schematic
With compensation
Without compensation
The measurement range for these temperature sensor inputs is between -50°C and 250°C. For each
connected sensor, two thresholds can be defined: the alarm threshold and the trip threshold.
CAUTION: The PT100 inputs are non-isolated and referenced to the product earth.
•Analog inputs:
Figure 5: Analog input connection
Pt100 +
Compensation
Pt100 -
For each connector
Pt100-1
Pt100-2
Pt100-3
Pt100-4
Pt100-5
Pt100-6
AI2
AI1
0V
0V
10 V
AI4
AI3
0V
0V