Parker GVI Series User manual

GVI Product Manual: Frames C, D & E
We reserve the right to make technical changes. 25.09.19 06:47 192-300300N1 GVI Frames C, D & E 2019-9
The data correspond to the current status at the time of printing.
Product Manual GVI
GVI: Global Vehicle Inverter Frame C, D and E
192-300300
192-300300N1 GVI
Product Manual
September 2019

Introduction GVI Product Manual: Frames C, D & E
2 192-300300N1 GVI Frames C, D & E 2019-9
Production site:
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Electromechanical & Drives Division Europe [EMDE]
Robert-Bosch-Strasse 22
77656 Offenburg, Deutschland)
Tel.: + 49 (0781) 509-0
fax + 49 (0781) 509-98176
Internet: www.parker.com/eme http://www.parker.com/eme
Email address: [e-mail] mailto:[e-mail]
Parker Hannifin GmbH - registered office: Bielefeld HRB 35489
Management Board: Ellen Raahede Secher, Dr.-Ing. Hans-Jürgen Haas, Kees Veraart - Chairman of the board: Hansgeorg Greuner
Non-warranty clause
We checked the contents of this publication for compliance with the associated
hardware and software. We can, however, not exclude discrepancies and do
therefore not accept any liability for the exact compliance. The information in this
publication is regularly checked, necessary corrections will be part of the
subsequent publications.
English Master created.

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Content
1. Introduction .............................................................................................7
1.1 About this document ............................................................................... 7
1.1.1. Definitions .......................................................................................................... 7
1.1.2. Terms and abbreviations .................................................................................. 7
1.1.3. This revision....................................................................................................... 7
1.1.4. Scope .................................................................................................................. 7
1.1.4.1 Document structure................................................................................. 7
1.1.5. Warning, caution and information notices...................................................... 7
2. Personal safety........................................................................................8
2.1 Safety signs on the equipment ............................................................... 8
3. Original Equipment Manufacturer responsibility..................................9
4. Technical support ...................................................................................9
5. Warranty.................................................................................................10
5.1 Warranty claims ..................................................................................... 10
5.1.1. Return of material authorization .................................................................... 10
5.2 Product warranty ................................................................................... 10
6. Product overview ..................................................................................10
6.1 Product version...................................................................................... 11
6.1.1. GVI drives ......................................................................................................... 11
6.2 Components on the GVI ........................................................................ 12
6.3 Terminal posts ....................................................................................... 12
6.4 Product identification label ................................................................... 13
6.5 LED status indicator .............................................................................. 14
6.6 Cooling method...................................................................................... 14
7. Integration guidelines ...........................................................................15
7.1 Introduction ............................................................................................ 15
7.2 Dust and liquid ingress prevention ...................................................... 15
7.3 Cooling requirements............................................................................ 15
7.3.1. GVI with cold plate heat sink.......................................................................... 16
7.4 Orientation.............................................................................................. 16
7.5 Selecting GVI mounting fasteners........................................................ 17
7.6 Wiring and connections ........................................................................ 17
7.6.1. Motor and battery connections ...................................................................... 17
7.6.2. GVI 35pin Standalone controller typical wiring............................................ 18
7.7 Sizing and selection of on-board fuse ................................................. 19
7.7.1. Selecting rectangular washer for fuse mounting......................................... 20
7.8 Sizing of logic supply fuse.................................................................... 20
7.9 Sizing of fuse F3 .................................................................................... 21
7.10 Main contactor ....................................................................................... 21
7.11 Preventing reversed polarity connection............................................. 21

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7.12 Emergency stop switch......................................................................... 21
7.13 Motor feedback sensor.......................................................................... 22
7.13.1. General.............................................................................................................. 22
7.13.2. Sinusoidal Motor Speed Sensor Input........................................................... 22
7.14 Motor temperature sensor..................................................................... 24
7.15 Double-mounting of GVI........................................................................ 24
7.16 I/O interface ............................................................................................ 24
7.17 Start-up and Commissioning ................................................................ 24
7.17.1. Configuring the motor controller for the application................................... 24
7.18 Incorporation of GVI in the vehicle safety system .............................. 25
7.18.1. Motor controller functions.............................................................................. 25
7.18.2. MTTFd ............................................................................................................... 25
7.18.2.1 How to apply MTTFd calculations in an application ............................. 25
7.18.2.2 Travel and brake control ....................................................................... 26
7.18.2.3 MTTF and MTTFd values for different functions................................... 27
7.18.2.4 Power stage .......................................................................................... 27
7.18.3. Default parameters, EEPROM considerations.............................................. 28
8. I/O interface description .......................................................................29
8.1 Mating connector specification ............................................................ 29
8.1.1. Part numbers.................................................................................................... 29
8.2 GVI 35 pin Premium pinout ................................................................... 29
8.3 Key_Input................................................................................................ 30
8.3.1. Function............................................................................................................ 30
8.3.2. Protection ......................................................................................................... 30
8.4 Digital input ............................................................................................ 30
8.4.1. Function............................................................................................................ 30
8.4.2. Protection ......................................................................................................... 30
8.4.3. Circuit................................................................................................................ 31
8.5 HW ID1 and ID2 inputs........................................................................... 31
8.5.1. Function............................................................................................................ 31
8.5.2. Protection ......................................................................................................... 31
8.5.3. Circuit................................................................................................................ 32
8.6 Analog Inputs ......................................................................................... 32
8.6.1. Functions.......................................................................................................... 32
8.6.2. Protection ......................................................................................................... 32
8.6.3. Circuit................................................................................................................ 32
8.7 Encoder input......................................................................................... 33
8.7.1. Function............................................................................................................ 33
8.7.2. Protection ......................................................................................................... 33
8.7.3. Circuit................................................................................................................ 33
8.8 Open Drain Output................................................................................. 34
8.8.1. Function............................................................................................................ 34
8.8.2. Protection ......................................................................................................... 35
8.8.3. Circuit................................................................................................................ 35
8.9 High Side IN and Out ............................................................................. 36
8.9.1. Function............................................................................................................ 36
8.9.2. Protection ......................................................................................................... 36
8.9.3. Circuit................................................................................................................ 37
8.10 Motor temperature measurement input ............................................... 37
8.10.1. Function............................................................................................................ 37

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8.10.2. Protection ......................................................................................................... 37
8.10.3. Circuit................................................................................................................ 37
8.11 Sensor Supply Output ........................................................................... 38
8.11.1. Function............................................................................................................ 38
8.11.2. Protection ......................................................................................................... 38
8.11.3. Circuit................................................................................................................ 38
8.12 Sensor Supply GND............................................................................... 38
8.12.1. Function............................................................................................................ 38
8.12.2. Protection ......................................................................................................... 39
8.12.3. Circuit................................................................................................................ 39
8.13 CAN ......................................................................................................... 39
8.13.1. Function............................................................................................................ 39
8.13.1.1 CAN_120R ............................................................................................ 40
8.13.2. Protection ......................................................................................................... 40
8.13.3. Circuit................................................................................................................ 40
9. Monitoring..............................................................................................41
9.1 General.................................................................................................... 41
9.2 Temperature monitoring........................................................................ 41
9.3 Motor current Monitoring ...................................................................... 41
9.4 Voltage monitoring ................................................................................ 41
9.5 CANopen PDO timeout monitoring ...................................................... 41
9.6 Pre-charge timeout monitoring............................................................. 41
10. Installation and maintenance instructions ..........................................42
10.1 Introduction ............................................................................................ 42
10.2 Periodic inspection & preventive maintenance................................... 43
10.3 Replacement of on-board fuse ............................................................. 44
10.4 GVI removal ............................................................................................ 44
10.5 GVI installation....................................................................................... 45
10.5.1. Assembly material for GVI mounting ............................................................ 46
10.6 Connecting terminal posts.................................................................... 47
10.6.1. Terminals with threads.................................................................................... 48
10.6.2. Placement of rectangular washers for on-board fuse ................................. 49
10.7 Start-up and commissioning................................................................. 49
10.7.1. Checks prior to initial power up..................................................................... 49
10.7.2. Verifying motor controller readiness for operation ..................................... 50
11. Troubleshooting ....................................................................................50
11.1 LED status indicator .............................................................................. 50
12. General considerations for system design .........................................51
12.1 I/O and signal cables ............................................................................. 51
12.1.1. Motor and battery connection cables............................................................ 51
12.2 Power cables .......................................................................................... 51
12.3 Electrostatic discharge ......................................................................... 52
12.4 Start-up & Turn-off Sequences ............................................................. 52
12.5 Motor....................................................................................................... 53

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13. Product Specifications..........................................................................54
13.1 General.................................................................................................... 54
13.2 Current and power output ratings ........................................................ 54
13.3 DC supply voltage requirement ............................................................ 55
13.4 I/O Interface technical data ................................................................... 55
13.4.1. Key input........................................................................................................... 55
13.4.2. Digital inputs .................................................................................................... 55
13.4.3. Analog inputs................................................................................................... 55
13.4.4. Encoder input................................................................................................... 56
13.4.5. Open drain output............................................................................................ 56
13.4.6. High side in and out ........................................................................................ 56
13.4.7. Motor temperature measurement input......................................................... 57
13.4.8. Sensor supply .................................................................................................. 57
13.4.9. CAN ................................................................................................................... 58
13.5 Physical characteristics ........................................................................ 58
13.5.1. Weight ............................................................................................................... 58
13.5.2. Dimensions....................................................................................................... 58
13.5.2.1 GVI Frame C......................................................................................... 58
13.5.2.2 GVI Frame D......................................................................................... 59
13.5.2.3 GVI Frame E ......................................................................................... 59
13.5.3. Surface requirement........................................................................................ 60
13.6 Environmental testing & standards appliance .................................... 60
13.6.1. General.............................................................................................................. 60
13.6.2. Temperature ..................................................................................................... 60
13.6.3. Humidity............................................................................................................ 60
13.6.4. Mechanical tests .............................................................................................. 61
13.6.5. EMC ................................................................................................................... 61
13.6.6. Isolation ............................................................................................................ 61

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1. Introduction
1.1 About this document
1.1.1. Definitions
In this documentation the product Global Vehicle Inverter is referred to as “The motor controller” or GVI
which means GVI frames C, D and E.
GVI is a family of motor controllers for use in systems with 24-80 DC (nominal) supply and power levels from
5 to 68 kVA. The GVI is suitable for most electric vehicle applications. All motor controller models are
available with vehicle control input/output (I/O) in addition to standard CAN bus communication.
1.1.2. Terms and abbreviations
GVI
AC mobile inverter
Application
A customer specific use of Parker hardware and software
CAN
Controller Area Network
ESD
Electrostatic discharge
LED
Light Emitting Diode
MCU
Micro Computer Unit
OEM
Original equipment manufacturer
PTC
Positive temperature coefficient
PWM
Pulse width modulation
RMA
Return of Material Authorization
1.1.3. This revision
This revision replaces all previous revisions of this document. Parker has made every effort to ensure that
this document is complete and accurate at the time of printing. In accordance with our policy of continuous
product improvement, all data in this document is subject to change or correction without prior notice.
1.1.4. Scope
This product manual presents instructions, guidelines, diagrams and other information relevant to integration,
installation and maintenance of the motor controller in an electrically powered vehicle utilizing the CAN Bus
and CANopen protocol for communications and control.
1.1.4.1 Document structure
This document is structured with two main target groups in mind:
Chapter 10 is intended for installation and maintenance personnel and contain step-by-step instructions for
installation and maintenance of the inverter using Parker’s recommendations. These instructions must be
complemented and revised for use in equipment-specific manuals.
The other chapters in this document are mainly intended for designers and contain Parker’s general
recommendations and guidelines for integration of the motor controller.
1.1.5. Warning, caution and information notices
Special attention must be paid to the information presented in warning, caution and information notices when
they appear in this manual. Definitions of caution, warning and information notices are shown below:
WARNING
This section describes the risk of the hazard, for example High voltage - risk of
personnel injury
A Warning informs the user of a hazard or potential hazard that could result in serious or fatal
injury and damage to the equipment if the precautions or instructions given in the warning
notice are not observed/followed.

Personal safety
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CAUTION
This section describes the risk of the hazard, for example Risk of damage to
equipment
A Caution informs the user of a hazard or potential hazard that could result in damage to the
equipment if the precautions or instructions given in the caution notice are not
observed/followed.
NOTE
A note contains supplemental information or references to supplemental information on a
topic.
2. Personal safety
Parker provides this and other manuals to assist manufacturers in using the GVI in a proper, efficient and
safe manner. Manufacturers must ensure that all persons responsible for the design and use of equipment
employing the GVI have the proper professional skills and knowledge about the equipment.
WARNING
High voltage/high torque - risk of personnel injury
The high power levels and high torque available from a motor and motor controller
combination can cause severe or fatal injury.
The Motor controller is intended for connection to battery voltage sources and for use with
low voltage AC motors.
Before installation, always verify that the motor controller model is correct for the vehicle’s
battery supply voltage. The DC Supply nominal voltage is shown on the motor controller’s
identification label, see chapter 6.2 Components on the GVI.
2.1 Safety signs on the equipment
Table 1 shows the signs used on Parker’s products. Use of the signs varies between products.

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Safety signs on the equipment
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Safety sign
Description
Take care to avoid coming into contact with electricity.
Read the product manual before starting any maintenance work on
the equipment.
Persons with active implanted cardiac devices shall not be in the
vicinity of the equipment due to the strong electromagnetic field it
generates.
Tighten the power connection screws to the specified tightening
torque (example shown).
Table 1 Safety signs used on Parker’s equipment
3. Original Equipment
Manufacturer responsibility
The Parker inverter products are intended for controlling motors in electric powered vehicles. These inverters
are supplied to original equipment manufacturers (OEMs) for incorporation into their vehicles and vehicle
control systems.
OEMs are responsible for ensuring that the GVI inverter is used for its intended purpose only.
It is the OEM’s responsibility to ensure that their equipment
•functions in a safe way
•complies with applicable regulations
4. Technical support
Parker support original equipment manufacturers (OEM’s) with additional information on any topic covered in
this document, or for additional information about other Parker products. End customers and third parties are
requested to turn to the OEM for support.

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5. Warranty
5.1 Warranty claims
Failure analysis and testing of the GVI is available for the OEM at Parker.
Parker does not provide any warranty or service to the GVI end users. End users are asked to turn to the
original equipment manufacturer for warranty issues, service and spare part needs.
5.1.1. Return of material authorization
Contact Parker before a product is returned in order to ensure an efficient handling of the product with a high
level of traceability. Parker provides a return of authorization (RMA) number for returns and a form (RMA
request), which describes how to proceed.
Contact addresses for return requests:
China
[e-mail]
USA
[e-mail]
Europe and rest of the world
[e-mail]
5.2 Product warranty
Refer to the sales agreement or contract under which the inverter was purchased for a complete statement
of the product warranty.
6. Product overview
Figure 1 A typical system with the GVI
Figure 1 shows the implementation of the GVI in a typical electric vehicle application.
In a typical application, the GVI converts power from a DC power source (a battery in a vehicle for example)
to three phase AC power to drive a motor.
The GVI can be delivered with nominal voltages according to chapter 13.2.

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6.1 Product version
The motor controller product range consists of three single drives: frames C, D and E, each with its own size
and current and power output rating characteristics.
6.1.1. GVI drives
Figure 2 GVI Frame C
Figure 3 GVI Frame D
Figure 4 GVI Frame E

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6.2 Components on the GVI
Pos
Name
Pos
Name
1
B+ connection
2
B- connection
3
I/O connector (see chapter 8 I/O interface
description)
4
U1, V1 and W1 connections
5
On board fuse (optional) , see section 7.7
6
Heat sink (see chapter 6.6 Cooling method)
Figure 5 Components on the GVI
6.3 Terminal posts
The terminal posts are designed for ring lug connections and are available as threaded connections (screw
connection).
Figure 6. Terminal posts with threads

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Product identification label
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6.4 Product identification label
A label containing pertinent product identification information is attached to the motor controller cover. The
product label fields relevant to product identification are described in Figure 7 and Table 2.
Figure 7 Example of product identification label
Pos
Description
1
Nominal voltage
2
2D bar code containing the GVI part number and serial number
3
Date of manufacture
4
Country of manufacture
5
GVI serial number
6
GVI software number as shipped

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Pos
Description
7
GVI product code / order code
8
Hardware identification number as shipped
Table 2 Description of product identification label
6.5 LED status indicator
The LED status indicator (see chapter 11.1), provides useful diagnostic information when troubleshooting
vehicle problems (see chapter 11).
6.6 Cooling method
The motor controller is mounted upon a cold plate heat sink, which transfers heat from the power conversion
components in the motor controller to the surroundings.
Figure 8 Cold plate heat sink
The cold plate heat sink is typically mounted on a surface that transfers the heat from the motor controller to
the surrounding vehicle structure.

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7. Integration guidelines
7.1 Introduction
This chapter describes guidelines for integration of the motor controller. Integration is the installation of the
converter into a vehicle.
The information is general in nature. General instructions for mounting of the converter in a vehicle are found
in chapter 10.
High power levels are exposed at each of the connection posts. These terminals should be protected from
accidental contact which could result in a short circuit.
WARNING
ESD - risk of damage to equipment
Electrostatic discharges (ESD) can damage sensitive electronic components.
•Do not touch the I/O connector pins.
•The GVI meets all necessary standards for ESD-protection.
However, very high levels of static electricity can build up
during handling of the equipment. The built-in ESD-protection
does not replace a professional and careful handling.
7.2 Dust and liquid ingress prevention
The dust/moisture protection of the motor controller is only valid when the mating I/O connector is inserted
and correctly assembled with appropriate cable seals.
The motor controller cover provides a measure of protection from liquids and particles dripping, splashing or
spraying onto it. The motor controller must not be subjected to liquids under high pressure.
7.3 Cooling requirements
The motor controller is mounted upon a solid heat sink. This is the surface that transfers heat from the power
conversion components to the surroundings.
In order to cool the power conversion components efficiently, it is important to consider the thermal
resistance between the heat sink and the surroundings according to chapters 7.3.1. The motor controller
operating temperature is specified in chapter 13.1. Higher operating temperature or less efficient cooling is
permissible, but will result in a reduction of the operating lifetime or power output of the motor controller (see
chapter 13.2).
The motor controller is designed to operate with a maximum heat sink temperature of 85 ºC. During
performance testing of a new vehicle design, it is necessary to ensure that the vehicle can fulfill its
environmental and performance specifications without exceeding this temperature of the motor controller. If
this is not possible to achieve, the OEM should consider improving cooling of the motor controller, switching
to larger motor controllers, or reduce vehicle performance.
If the heat sink temperature exceeds 85 °C the maximum available motor current is automatically reduced.
The motor controller will still operate, with reduced performance, up to 110 °C, when an emergency
shutdown will take place. It should be noted though, that the motor controller is operating outside its
specification in this case, and it should only be used as a “limp home” option to let the driver return the
vehicle to a service area where the reason for the overheating can be remedied.
It is strongly recommended that an error message is generated and that vehicle performance is decreased if
the motor controller temperature exceeds 85 °C.

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7.3.1. GVI with cold plate heat sink
The motor controller with a cold plate heat sink is cooled through surface contact with the vehicle body.
Specifications for surface roughness and surface flatness where motor controller is mounted to the vehicle
body must be observed (see chapter 13.5.3. Application of thermal grease to the cold plate heat sink before
mounting the motor controller will achieve the best cooling effect.
The required heat sink-to-vehicle mounting surface thermal resistance shown in Table 3 must be achieved
by the installation in order for the motor controller to meet the published current ratings in the application.
For recommendations regarding mounting of the motor controller see chapters 7.5 and 10.5.
Motor controller model
Thermal resistance
GVI-C024-0350, GVI-C024-0550, GVI-C048-0280
0.17 ºC/W
GVI-C024-0550, GVI-D048-0450, GVI-D048-0550, GVI-
080-D0230, GVI-D080-0350, GVI-D080-0400
0.12 ºC/W
GVI-E048-0700, GVI-E080-0500, GVI-E080-0700
0.076 ºC/W
Table 3 Required thermal resistance for flat heat sink
7.4 Orientation
NOTE
The vibration test of the GVI does not include a horizontal mounting position with the I/O
connector facing downwards.
The motor controller can be mounted vertically or horizontally with the I/O connector facing upwards. Care
should be taken to ensure access to the I/O connector, terminals and LED indicator.
When multiple motor controllers are used in an application each of the units must be arranged such that they
have sufficient cooling for the required duty cycle.
Consideration should be given to accessibility and visibility of the on-board LED status indicator (1, Figure 9)
for maintenance purposes.
Pos
Name
1
LED status indicator
Figure 9. LED status Indicator, (the surrounding label may vary)

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7.5 Selecting GVI mounting fasteners
Recommended bolts and washers for mounting of the motor controller are specified in chapter 10.5.1.
7.6 Wiring and connections
WARNING
High voltage - risk of personnel injury and/or damage to equipment
High power levels are exposed at each of the connection posts. These terminals should be
protected from accidental contact which could result in a short circuit.
This section provides schematic diagrams and related information for connecting the motor controllers in a
vehicle. These circuit diagrams present basic – but functional – general purpose wiring configurations. The
OEM may choose to modify these generic wiring configurations to fit their individual requirements or
conventions. It is the responsibility of the OEM to develop vehicle specific wiring schematics and instructions
for each vehicle mode.
7.6.1. Motor and battery connections
Recommended fasteners for the terminal posts are specified in chapter 10.6.
NOTE
The motor connections (U, V, and W) are not interchangeable and shall be connected to the
corresponding terminals on the motor.
CAUTION
Incorrect dimensioning of connections – risk of overheating
Ring lugs for motor and battery connections must be adequately rated to carry motor and
battery currents. Otherwise cables and terminal posts may be overheated. See also power
cable sizing guidelines in chapter 12.2.
An example of basic power wiring diagram for the motor controller and its motor is shown in Figure 10.
NOTE
Figure 10 is a simplified and generic schematic drawing. The actual wiring in a vehicle may
differ.

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7.6.2. GVI 35pin Standalone controller typical wiring
Figure 10 shows an example wiring diagram for a motor controller that is used as a standalone controller,
with multiple I/O directly interfacing vehicle logic.
The GVI 35pin version does not have multiple CAN pins, so if the motor controller is placed in the middle of a
CAN bus, care should be taken to minimize length of the stub lines. If the motor controller is placed at one
end of the CAN bus, the built in 120Ωtermination resistor can be utilized by placing a jumper between pin 15
and pin 33.
In this example, the emergency stop button is placed in line with HS_INHS_OUT which powers the main
contactor. With this configuration logic power is still present when emergency switch is operated, allowing
logging/troubleshooting also with the emergency button depressed.
Figure 10 Example wiring diagram for standalone I/O controller
NOTE
Figure 10 is a simplified and generic schematic drawing. The actual wiring in a vehicle may
differ.

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7.7 Sizing and selection of on-board fuse
NOTE
An on board fuse is not supplied with the Motor Controller. This component must be sourced
separately.
An on-board fuse (F1 in Figure 10) installed between the B+ and + terminals on each motor controller
protects the motor controller and power distribution circuit in the event of a short circuit fault in the power
conversion section.
Consider the fuse accessibility for maintenance purposes when choosing location of the motor controller.
Each motor controller must be fused against internal faults and short circuits. Instead of an on-board fuse, a
user may choose to locate this fuse off the motor controller (i.e. at a central fuse panel). In this configuration
battery power is connected directly to the motor controller + terminal.
NOTE
The fuse is not intended to protect the motor controller or motor against overloads.
Selection of appropriate fuse ratings is a system design issue and falls under the OEMs responsibility. As a
rule of thumb, the fuse shall be rated based on the motor controller’s power output (2 min. rating) listed in
chapter 13.2.
Calculate DC input current as follows:
IDC_IN = Power output [kVA](2 min rating)×1 000
V DC
Select a fuse with rating and time delay characteristics which will carry IDC_IN indefinitely, but blow within 2 -
3 seconds for 2 x IDC_IN.
Figure 11 shows typical dimensions of the fuse for on-board mounting. Buss (ANN series), Pudenz and
others manufacture fuses that satisfy the time delay and dimension requirements.
Pos
Name
Pos
Name
1
Pudenze
2
Buss (ANN series)
Figure 11. Dimensions for the motor controller On-board Fuse

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7.7.1. Selecting rectangular washer for fuse mounting
The following issues shall be taken into consideration when selecting rectangular washers for mounting of an
in-board fuse.
Pos
Name
Pos
Name
1
On-board fuse
2
Washer (terminal +)
3
Washer (terminal +)
4
Washer (terminal B+)
Figure 12 On-board fuse washers
•The washers (2, 3 and 4) shall be rectangular (not square).
•Washer (3) shall be tin-plated copper to conduct the high current and minimize losses
between fuse and terminal.
•Washer (4) shall have same thickness as washer (3) for alignment of fuse. No current
goes through this washer (4).
•Washer (2) serves to distribute pressure between on-board fuse (1) and washer (3). No
current flows through this washer (2).
•The washers (2, 3 and 4) are used as reinforcement for thin (weak) fuse terminals. If
fuse terminal thickness is > 2mm square washers are not necessary (on-board fuse (1)
is stable in itself).
7.8 Sizing of logic supply fuse
The logic supply fuse (F2 in Figure 10) is part of the KEY_INPUT protection, see chapter 8.3.2.
The fuse should be sized according to the number of motor controllers connected to the fuse and to protect
the cable area in the circuit and the current consumption of the KEY_INPUT.
Name
Recommended value
Fuse size
Slow acting fuse 6-10 A (depending on the load)
KEY_INPUT power input
< 15 W
Table 4 Recommended values for sizing of logic supply fuse