Power Electronics SD750 Series User manual

SD750
ACCESSORIES MANUAL
DIGITAL I/O EXPANSION BOARD
LOW VOLTAGE VARIABLE SPEED DRIVE

Accessories Manual
Digital I/O expansion board
Edition: October 2021
SD75MA02BI Rev. B

SD750
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ABOUT THIS MANUAL
ABOUT THIS MANUAL
PURPOSE
This manual contains important instructions for the installation, configuration and use of the optional
digital input/output (I/O) expansion board for Power Electronics’ SD750 variable speed drives.
TARGET AUDIENCE
This manual is intended for qualified customers who will install, operate and maintain Power Electronics
SD750 variable speed drives.
Only trained electricians may install and commission the drives.
REFERENCE MANUALS
The following reference documents are available for SD750 variable speed drives:
•Hardware and Installation Manual.
•Programming and Software Manual.
•Maintenance Manual.
•Pumps Application Manual.
POWER ELECTRONICS CONTACT INFORMATION
Power Electronics USA Inc.
1510 N. Hobson Street, Gilbert,
Phoenix
AZ 85233
UNITED STATES OF AMERICA
US Sales: 602-354-4890 / [phone]
Power Electronics España, S.L.
Polígono Industrial Carrases
Ronda del Camp d’Aviació nº 4
46160, Llíria (Valencia)
SPAIN
Telephone: [phone]
Website: www.power-electronics.com

POWER ELECTRONICS
SD750
REVISIONS
3
REVISIONS CONTROL
DATE (DD/MM/YYYY)
REVISION
DESCRIPTION
30 / 10 / 2019
A
First Edition.
18 / 10 / 2021
B
Introduction. Connection to the drive.
The equipment and technical documentation are periodically updated. Power Electronics reserves the right to modify all or part of the
contents of this manual without previous notice. To consult the most updated information of this product, you may access our website
www.power-electronics.com, where the latest version of this manual can be downloaded. The reproduction or distribution of the present
manual is strictly forbidden unless express authorization from Power Electronics

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TABLE OF CONTENTS
TABLE OF CONTENTS
ABOUT THIS MANUAL ...............................................................................................................................2
SAFETY SYMBOLS.....................................................................................................................................5
SAFETY INSTRUCTIONS............................................................................................................................6
INTRODUCTION.....................................................................................................................................7
Digital I/O board specifications.............................................................................................................8
LED indicators......................................................................................................................................8
CONNECTION TO THE DRIVE..............................................................................................................9
Connectors description.......................................................................................................................10
COMMISSIONING ................................................................................................................................11
Parameters setting .............................................................................................................................11

POWER ELECTRONICS
SD750
SAFETY SYMBOLS
5
EN
SAFETY SYMBOLS
Always follow safety instructions to prevent accidents and potential hazards from occurring.
In this manual, safety messages are classified as follows:
Other symbols used in this manual for safety messages are the following:
WARNING
Identifies potentially hazardous situations where dangerous voltage may be
present, which if not avoided, could result in minor personal injury, serious
injury or death.
Be extremely careful and follow the instructions to avoid the risk of electrical
shocks.
CAUTION
Identifies potentially hazardous situations, which if not avoided, could result
in product damage, or minor or moderate personal injury.
Read the message and follow the instructions carefully.
NOTICE
Identifies important measures to take in order to prevent damage equipment
and warranty lost, as well as encouraging good use and environmental
practices.
Hot surface. Be careful and follow the instructions to avoid burns and personal injuries.
Risk of fire. Be careful and follow the instructions to prevent causing an unintentional fire.
Caution, risk of electric shock. Energy storage timed discharge. Wait for the indicated
time to avoid electrical hazards.
Caution, risk of hearing damage. Wear hearing protection.

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SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
IMPORTANT!
Read carefully this manual to maximize the performance of the product and to ensure its safe installation
and use.
In order to appropriately use the drive, please, follow all instructions described in the Hardware and
Installation Manual which refer to transportation, installation, electrical connection and commissioning of
the equipment.
For maintenance operations, follow the instructions from the Maintenance Manual.
Power Electronics accepts no responsibility for any damages resulting from incorrect use of equipment.
CAUTION
Read carefully the Hardware and Installation Manual, the Maintenance Manual and all documentation
related to the drive to guarantee its safe use and avoid the risk of personal injuries and damages to the
equipment.
Ensure compliance with local and national regulations of the installation site.

POWER ELECTRONICS
SD750
INTRODUCTION
7
EN
INTRODUCTION
SD750 drives are compatible with several optional boards:
•Communication boards (Ethernet/IP, Profinet, CANopen, Profibus…).
•Encoder board.
•Digital and analog I/O expansion boards.
•Optical fiber board
…among others. Up to three optional boards can be connected, maximum two of the same type.
This manual focuses on the optional digital input/output (I/O) expansion board. This board allows to
increase the number of digital inputs and outputs compared to those of the SD750 series (six inputs and
three outputs).
This board allows the drive to increase its inputs and outputs as follows:
•Increases five configurable, optically isolated, digital inputs - allowing a total of eleven or sixteen
inputs, depending on whether an expansion board or two have been added.
•Increases five digital outputs, via relays, with option to connect and disconnect delay, signal
inversion and the source / cause that activates it - allowing a total of eight or thirteen outputs,
depending on whether an expansion board has been added or two.
Below is the front of the digital input/output (I/O) expansion board:
1

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INTRODUCTION
Digital I/O board specifications
•Device type: I/O expansion
•Form factor: Insertion board.
•Type of wiring: Preferably shielded hose
LED indicators
The digital I/O expansion board includes 1 led indicator (status) that provides information about the
operation of the board. It is green and its frequency changes according to the operating state of the
system.
Its operation is explained in the following table:
LED
COLOR / FREQUENCY
DESCRIPTION
STATUS
Green / slow blinking
The system is operating correctly 1.
Green / fast blinking
Test mode. The user has put the board in test mode, it is useful
to locate the board when there are several identical boards.
1
When we state that the system operates correctly, it means that the communication between the expansion board, the
network controller and the central SD750 microcontroller is correct. This does not mean, however, that the
communication with the PLC is correct.

POWER ELECTRONICS
SD750
CONNECTION TO THE DRIVE
9
EN
CONNECTION TO THE DRIVE
The digital I/O expansion board connects directly to any of the three expansion connectors on the central
control board of the SD750 drive using the sixteen-pin ID connector on the back. Once connected, it allows
to provide the drive with more options of digital inputs and outputs and to display new groups of parameters.
Up to two boards of this type can be connected to each drive.
Rear side of the board
CAUTION
Power Electronics’ SD750 drives operate with high electric energy.
Make sure that the power has been disconnected and allow at least 10 minutes to ensure that the DC bus
has been discharged. Make sure with a multimeter that there is no voltage at the input, output or DC bus
before installing the expansion board. Otherwise, there is a risk of personal injury or accident
2

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CONNECTION TO THE DRIVE
Connectors description
The I/O expansion board has two terminals on the front, one will be for the digital inputs, its activation
power and common terminal and the other terminal will be for the digital outputs.
The terminal block with the least connections includes the power connector (24V) and the common
terminal (GND), each at one end, as well as the five digital input connectors (ED1 - ED5), which are
located between the power terminals.
There are ten output connectors, two for each digital output, one for the common connector (RLY1_COM)
and one for the programmable output (RLY1_NO), located on the terminal block with the most
connections.
On the back there is a the sixteen-pin ID connector to connect it to the central board of the SD750 drive.

POWER ELECTRONICS
SD750
COMMISSIONING
11
EN
COMMISSIONING
The digital I/O expansion board allows you to increase the number of inputs and outputs compared to the
standard SD750.
Follow the next steps to carry out the commissioning of the digital I/O expansion board:
1. After stopping and de-energizing, the drive, connect the expansion board to the connector of the
equipment prepared for the expansion boards that are free.
2. Check that the communication with the SD750 is correct (by displaying the group G23.2). See that
in the group the status of digital expansion board is activated. In this case, new groups of
parameters
3. Set the inputs/outputs according to the desired behavior (G4.1 or G8.1).
If you want to see if the I/O status is as expected, check the:
•SV3.34 Group Digital input status (O not active, X active)
•SV3.34 group Relay status (O not active, X active)
Parameters setting
The parameters that are activated once the board is connected are summarized below:
NOTICE
For details about the range of values and Modbus addresses, refer to the Software and
Programming Manual for SD750 drives
Subgroup G23.2: Input/Output
The subgroup G23.2 of the SD750 inverter allows configuring and displaying the status of the input
and output boards, as well as activating the test mode.
It will be necessary to verify that the corresponding board is activated during commissioning and is not
in test mode. As there is the possibility of connecting up to two digital I / O expansion boards, the
following parameters will be displayed:
•G23.2.1: I/O exp status dig A
•G23.2.2: Test exp I/O dig A
•G23.2.3: Status exp I/O dig B
•G23.2.4: Test exp I/O dig B
3

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COMMISSIONING
Subgroup G4.1: Digital inputs
The subgroup G4.1 of the SD750 drive allows configuring the digital inputs.
By connecting a digital I / O expansion board to the drive, five new digital input parameters are enabled
in subgroup G4.1, or ten in the case of connecting two expansion boards.
Parameters from G4.1.11 to G4.1.20 will be enabled:
•G4.1.11 Digital input 7: multiple options.
•G4.1.12 Digital input 8: multiple options.
…
•G4.1.20 Digital input 16: multiple options.
NOTICE
Each input can be configured with multiple options, see the SD750 Drive Software and Programming
Manual for more information on the functions of each input.
Subgroup G8.1: Digital outputs
The subgroup G8.1 of the SD750 drive allows configuring the digital outputs.
By connecting a digital I / O expansion board to the drive, twenty new digital output parameters are
enabled in subgroup G8.1, or forty in the case of connecting two expansion boards.
Parameters from G8.1.13 to G8.1.52 will be enabled:
•G8.1.13 Relay 4 source selection: multiple options.
•G8.1.14 Relay connection delay 4: seconds (with one decimal place)
•G8.1.15. Relay connection delay 4: seconds (with one decimal place)
•G8.1.16 Relay 4 inversion: YES / NO
…
•G8.1.49 Relay 13 source selection: multiple options.
•G8.1.50 Relay 13 connection delay: seconds (with one decimal place)
•G8.1.51. Relay connection delay 13: seconds (with one decimal place)
•G4.1.52: Relay 13 inversion: YES / NO
NOTICE
Each relay source selection can be configured with multiple options, see the SD750 Drive Software and
Programming Manual for more information.

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