SMA MD.IO-40 User manual

MD-IO-40-IA-en-11 | Version 1.1ENGLISH
Installation manual
SMA I/O MODULE
MD.IO-40 (PC-PWC.BG1)

Legal Provisions SMA Solar Technology AG
Installation manualMD-IO-40-IA-en-112
Legal Provisions
The information contained in these documents is the property of SMA Solar Technology AG. No part of this document
may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, be it electronic,
mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA Solar Technology AG.
Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not
require prior approval.
SMA Solar Technology AG makes no representations or warranties, express or implied, with respect to this
documentation or any of the equipment and/or software it may describe, including (with no limitation) any implied
warranties of utility, merchantability, or fitness for any particular purpose. All such representations or warranties are
expressly disclaimed. Neither SMA Solar Technology AG nor its distributors or dealers shall be liable for any indirect,
incidental, or consequential damages under any circumstances.
The exclusion of implied warranties may not apply in all cases under some statutes, and thus the above exclusion may
not apply.
Specifications are subject to change without notice. Every attempt has been made to make this document complete,
accurate and up-to-date. Readers are cautioned, however, that product improvements and field usage experience may
cause SMA Solar Technology AG to make changes to these specifications without advance notice or per contract
provisions. SMA Solar Technology AG shall not be responsible for any damages, including indirect, incidental or
consequential damages, caused by reliance on the material presented, including, but not limited to, omissions,
typographical errors, arithmetical errors or listing errors in the content material.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a
product or brand is not a registered trademark.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. [phone]
Fax [phone]
www.SMA.de
Email: [email protected]
As of: 3/10/2021
Copyright © 2021 SMA Solar Technology AG. All rights reserved.

Table of Contents
SMA Solar Technology AG
Installation manual 3MD-IO-40-IA-en-11
Table of Contents
1 Information on this Document..................................................................................................... 4
1.1 Validity ............................................................................................................................................................. 4
1.2 Target Group ................................................................................................................................................... 4
1.3 Content and Structure of this Document......................................................................................................... 4
1.4 Levels of Warning Messages.......................................................................................................................... 4
1.5 Symbols in the Document................................................................................................................................ 4
1.6 Typographical Elements in the Document...................................................................................................... 5
1.7 Designations in the Document ........................................................................................................................ 5
2 Safety ............................................................................................................................................ 6
2.1 Intended Use.................................................................................................................................................... 6
2.2 IMPORTANT SAFETY INSTRUCTIONS......................................................................................................... 6
3 Scope of Delivery ......................................................................................................................... 8
4 Product Overview ........................................................................................................................ 9
4.1 SMA I/O modules........................................................................................................................................... 9
4.2 Type Label........................................................................................................................................................ 9
5 Mounting....................................................................................................................................... 11
5.1 Mounting position............................................................................................................................................ 11
5.2 Installing the Module....................................................................................................................................... 11
6 Connection .................................................................................................................................... 13
6.1 Cable Requirements ........................................................................................................................................ 13
6.2 Preparing the Connection Cable.................................................................................................................... 13
6.3 Inserting the Cables......................................................................................................................................... 13
6.4 Connecting the Ripple Control Receiver ........................................................................................................ 13
6.4.1 Connecting the Ripple Control Receiver......................................................................................................... 13
6.4.2 Use of the Ripple Control Receiver for further Inverters................................................................................. 15
6.5 Multifunction Relay Connection...................................................................................................................... 15
6.5.1 Connection to the Multifunction Relay............................................................................................................ 15
6.5.2 Changing the Operating Mode of the Multifunction Relay .......................................................................... 17
7 Decommissioning ......................................................................................................................... 18
7.1 Removing the Module..................................................................................................................................... 18
7.2 Packing the Product for Shipment................................................................................................................... 19
7.3 Disposing of the Product ................................................................................................................................. 19
8 Technical Data .............................................................................................................................. 20
9 EU Declaration of Conformity ..................................................................................................... 21
10 Contact .......................................................................................................................................... 22

1 Information on this Document SMA Solar Technology AG
Installation manualMD-IO-40-IA-en-114
1 Information on this Document
1.1 Validity
This document is valid for the SMA I/O Module (MD.IO-40) with assembly designation "PC-PWC.BG1" from
hardware version A1.
1.2 Target Group
The tasks described in this document must only be performed by qualified persons. Qualified persons must have the
following skills:
• Knowledge of how an inverter works and is operated
• Training in how to deal with the dangers and risks associated with installing, repairing and using electrical devices
and installations
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of all applicable laws, standards and directives
• Knowledge of and compliance with this document and all safety information
1.3 Content and Structure of this Document
This document describes the installation, commissioning and decommissioning of the product.
You will find the latest version of this document and further information on the product in PDF format at www.SMA-
Solar.com.
Illustrations in this document are reduced to the essential information and may deviate from the real product.
1.4 Levels of Warning Messages
The following levels of warning messages may occur when handling the product.
DANGER
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, can result in property damage.
1.5 Symbols in the Document
Symbol Explanation
Information that is important for a specific topic or goal, but is not safety-relevant
☐
Indicates a requirement for meeting a specific goal
☑
Desired result

1 Information on this Document
SMA Solar Technology AG
Installation manual 5MD-IO-40-IA-en-11
Symbol Explanation
✖
A problem that might occur
Example
1.6 Typographical Elements in the Document
Typography Use Example
bold • Messages
• Terminals
• Elements on a user interface
• Elements to be selected
• Elements to be entered
• Connect the insulated conductors
to the terminals X703:1 to
X703:6.
• Enter 10 in the field Minutes.
>• Connects several elements to be
selected
• Select Settings > Date.
[Button]
[Key]
• Button or key to be selected or pressed • Select [Enter].
# • Placeholder for variable components
(e.g., parameter names)
• Parameter WCtlHz.Hz#
1.7 Designations in the Document
Complete designation Designation in this document
PV system PV system
SMA I/O modules Module, product

2 Safety SMA Solar Technology AG
Installation manualMD-IO-40-IA-en-116
2 Safety
2.1 Intended Use
The SMA I/O Module is a module with 6 digital inputs and 1 digital output operating as a multifunction relay. The
SMA I/O Module enables the implementation of grid management services for up to 12 SMA inverters in a network
with the same system password. The SMA I/O Module must be installed in one SMA inverter. For the implementation
of grid management services, the SMA I/O Module receives the specifications of the grid operator via a ripple control
receiver. The SMA I/O Module transmits the specifications of the grid operator via Speedwire network to a maximum
of 11 further SMA inverters. The multifunction relay can be configured for various operating modes. The multifunction
relay can, for example, be used for switching fault indicators on and off.
The product must only be installed in the following SMA inverters:
• STP 50-40 (SunnyTripowerCORE1)
• STP 50-41 (SunnyTripowerCORE1)
• STP 50-JP-40 (Sunny Tripower CORE1-JP)
The inverter still complies with the standard after the product has been installed.
All components must remain within their permitted operating ranges and their installation requirements at all times.
The product must only be used in countries for which it is approved or released by SMA Solar Technology AG and the
grid operator.
Use SMA products only in accordance with the information provided in the enclosed documentation and with the
locally applicable laws, regulations, standards and directives. Any other application may cause personal injury or
property damage.
Alterations to the SMA products, e.g., changes or modifications, are only permitted with the express written permission
of SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most cases
terminate the operating license. SMA Solar Technology AG shall not be held liable for any damage caused by such
changes.
Any use of the product other than that described in the Intended Use section does not qualify as the intended use.
The enclosed documentation is an integral part of this product. Keep the documentation in a convenient, dry place for
future reference and observe all instructions contained therein.
This document does not replace and is not intended to replace any local, state, provincial, federal or national laws,
regulations or codes applicable to the installation, electrical safety and use of the product. SMA Solar Technology AG
assumes no responsibility for the compliance or non-compliance with such laws or codes in connection with the
installation of the product.
The type label must remain permanently attached to the product.
2.2 IMPORTANT SAFETY INSTRUCTIONS
Keep the manual for future reference.
This section contains safety information that must be observed at all times when working.
The product has been designed and tested in accordance with international safety requirements. As with all electrical
or electronical devices, there are residual risks despite careful construction. To prevent personal injury and property
damage and to ensure long-term operation of the product, read this section carefully and observe all safety
information at all times.

2 Safety
SMA Solar Technology AG
Installation manual 7MD-IO-40-IA-en-11
DANGER
Danger to life due to electric shock when live components or cables of the inverter are touched
High voltages are present in the conductive components or cables of the inverter. Touching live parts and cables of
the inverter results in death or lethal injuries due to electric shock.
• Disconnect the inverter from voltage sources and make sure it cannot be reconnected before working on the
device.
• Wear suitable personal protective equipment for all work on the product.
NOTICE
Damage to the enclosure seal in subfreezing conditions
If you open the inverter when temperatures are below freezing, the enclosure seals can be damaged. This can lead
to moisture entering the inverter.
• Only open the inverter if the ambient temperature is not below -5°C.
• If a layer of ice has formed on the enclosure seal when temperatures are below freezing, remove it prior to
opening the inverter (e.g. by melting the ice with warm air).
NOTICE
Damage to the product due to sand, dust and moisture ingress
Sand, dust and moisture penetration can damage the product and impair its functionality.
NOTICE
Damage to the inverter or product due to electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter or the product through electrostatic
discharge.
• Ground yourself before touching any component.
NOTICE
Manipulation of system data in networks
You can connect the supported SMA products to the Internet. When connected to the Internet, there is a risk that
unauthorized users can access and manipulate the data of your system.
DHCP Server is recommended.
The DCHP server automatically assigns the appropriate network settings to your nodes in the local network. A
manual network configuration is therefore not necessary. In a local network, the Internet router is usually the
DHCP server. If the IP addresses in the local network are to be assigned dynamically, DHCP must be activated in
the Internet router (see the Internet router manual). In order to receive the same IP address by the internet router
after a restart, set the MAC address binding.
In networks where no DHCP server is active, proper IP addresses must be assigned from the free address pool of
the network segment to all network participants to be integrated during commissioning.

3 Scope of Delivery SMA Solar Technology AG
Installation manualMD-IO-40-IA-en-118
3 Scope of Delivery
Check the scope of delivery for completeness and any externally visible damage. Contact your distributor if the scope
of delivery is incomplete or damaged.
EB DC
A
Figure 1: Components included in the scope of delivery
Position Quantity Designation
A 1 Module of device type "PC-PWC.BG1"
B 1 Fastening screw (M5, TX25)
C 2 4-pole plug
D 1 Three-pole plug
E 1 Quick reference guide for commissioning

4 Product Overview
SMA Solar Technology AG
Installation manual 9MD-IO-40-IA-en-11
4 Product Overview
4.1 SMA I/O modules
The SMA I/O Module is a module with 6 digital inputs and 1 digital output operating as a multifunction relay. The
SMA I/O Module enables the implementation of grid management services for up to 12 SMA inverters in a network
with the same system password. The SMA I/O Module must be installed in one SMA inverter. For the implementation
of grid management services, the SMA I/O Module receives the specifications of the grid operator via a ripple control
receiver. The SMA I/O Module transmits the specifications of the grid operator via Speedwire network to a maximum
of 11 further SMA inverters. The multifunction relay can be configured for various operating modes. The multifunction
relay can, for example, be used for switching fault indicators on and off.
Design of the module
E
A
C
D
B
Figure 2: Design of the module
Position Designation Explanation
A – Opening for the fastening screw
B – Openings for the guide pins of the communication assembly
COUTPUT Multifunction Relay Connection
DINPUT Terminals for ripple control receiver
E – Connector strip on the back of the module for connection to the com-
munication assembly in the inverter
4.2 Type Label
The type label clearly identifies the product. The type label is located on the front of the product.
PC-PWC.BG1
XXXXX
XX
A
B
C
Figure 3: Design of the type label
Position Explanation
A Device type

4 Product Overview SMA Solar Technology AG
Installation manualMD-IO-40-IA-en-1110
Position Explanation
B Serial number
C Hardware version
You will require the information on the type label to use the product safely and when seeking customer support from
Service (see Section10 "Contact", page22).