SMA MD.SEN-40 User manual

Installation Manual
SMASENSORMODULE
MD.SEN-40 (PC-SENS.BG1)
MDSEN-40-IA-en-11 | Version 1.1ENGLISH

Legal Provisions SMA Solar Technology AG
Installation ManualMDSEN-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: 7/23/2021
Copyright © 2021 SMA Solar Technology AG. All rights reserved.

Table of Contents
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 3
Table of Contents
1 Information on this Document................................................. 5
1.1 Validity........................................................................................................................ 5
1.2 Target Group.............................................................................................................. 5
1.3 Content and Structure of this Document ................................................................... 5
1.4 Levels of Warning Messages .................................................................................... 5
1.5 Symbols in the Document .......................................................................................... 6
1.6 Typographical Elements in the Document ................................................................ 6
1.7 Designations in the Document................................................................................... 6
2 Safety ........................................................................................ 7
2.1 Intended Use .............................................................................................................. 7
2.2 IMPORTANT SAFETY INSTRUCTIONS.................................................................... 8
3 Scope of Delivery ..................................................................... 9
4 Product Overview .................................................................... 10
4.1 Product Description .................................................................................................... 10
4.2 Type Label .................................................................................................................. 11
5 Mounting................................................................................... 12
5.1 Mounting position ...................................................................................................... 12
5.2 Installing the Module ................................................................................................. 12
6 Connection ................................................................................ 14
6.1 Safety during Electrical Connection.......................................................................... 14
6.2 Cable Requirements................................................................................................... 14
6.3 Preparing the Connection Cable............................................................................... 15
6.4 Preparing the Enclosure Opening on the Inverter.................................................... 16
6.5 Connecting the Temperature Sensor......................................................................... 17
6.6 Connecting an Irradiation Sensor ............................................................................. 19
6.7 Connecting the Anemometer or Energy Meter ........................................................ 22
7 Configuration............................................................................ 24
7.1 Configuring the Anemometer or Energy Meter........................................................ 24
7.2 Configuring the Temperature Sensor ........................................................................ 25
7.3 Configuring the Irradiation Sensor............................................................................ 26
8 Decommissioning ..................................................................... 28
8.1 Removing the Module................................................................................................ 28
8.2 Packing the Product for Shipment ............................................................................. 29

Table of Contents SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-114
8.3 Disposing of the Product............................................................................................ 29
9 Technical Data .......................................................................... 30
10 Contact ...................................................................................... 32

1 Information on this Document
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 5
1 Information on this Document
1.1 Validity
This document is valid for:
• SMA Sensor Module (MD.SEN-40) with assembly designation "PC-SENS.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 Information on this Document SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-116
1.5 Symbols in the Document
Symbol Explanation
Information that is important for a specific topic or goal, but is not safety-rele-
vant
☐
Indicates a requirement for meeting a specific goal
☑
Desired result
✖
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 Sensor Module Module, product

2 Safety
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 7
2 Safety
2.1 Intended Use
The SMA Sensor Module is a module for SMA inverters. The SMA Sensor Module has different
interfaces for connecting various sensors. The SMA Sensor Module converts the signals of the
connected sensors and transmits them to the inverter.
The SMA Sensor Module has the following interfaces:
• Two temperature inputs for connecting the temperature sensors
• One analog input for voltage or current signals (e.g. of an irradiation sensor)
• One supply voltage for a signal source (e.g. of an irradiation sensor)
• One S0 interface (e.g. for connecting an anemometer or energy meter)
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.
The product must only be operated with temperature sensors with a Pt100 measuring shunt or a
Pt1000 measuring shunt.
The product must only be operated with irradiation sensors that can output a current signal in the
range from 0mA to 20mA or 4mA to 20mA or a voltage signal in the range from 0V to +10V.
The product must only be operated with anemometers with impulse output for S0 impulses in
accordance with DINEN62053-31 (IEC62053-31).
The product must only be operated with energy meters with S0 interface in accordance with
DINEN62053-31 (IEC62053-31).
A list with SMA Sensor Module compatible products is available at www.SMA-Solar.com.
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.
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 Safety SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-118
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.
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 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.

3 Scope of Delivery
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 9
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.
Figure 1: Components included in scope of delivery
Position Quantity Designation
A 1 SMA Sensor Module
B 1 2-pole terminal block
C 2 3-pole terminal block
D 2 5-pole terminal block
E 3 Shield clamp with ring terminal lug
F 1 Fastening screw (M5, TX25)
G 1 Quick Reference Guide

4 Product Overview SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-1110
4 Product Overview
4.1 Product Description
The SMA Sensor Module is a module for SMA inverters. The SMA Sensor Module has different
interfaces for connecting various sensors. The SMA Sensor Module converts the signals of the
connected sensors and transmits them to the inverter. The sensors are not included in the
SMASensorModule's scope of delivery.
The SMA Sensor Module has the following interfaces:
• 2 temperature inputs for connecting the temperature sensors (e.g. module temperature sensor,
external temperature sensor)
• 1 analog input for voltage or current signals (e.g. of an irradiation sensor)
• 1 supply voltage for a signal source (e.g. of an irradiation sensor)
• 1 S0 interface (e.g. for connecting an anemometer or energy meter)
The SMA Sensor Module performs the following tasks:
• Receive measured data from Pt100 or Pt1000 temperature sensors
• Receive measured data of an irradiation sensor that can output current or voltage signals as
well as provide supply voltage for this irradiation sensor
• Receive measured data of a remote terminal (e.g. anemometer or energy meter)
Design of the Module
Figure 2: Design of the module
Position Designation Explanation
A – Opening for the fastening screw
B – Openings for the guide pins of the communication assem-
bly
CS0 Terminal for receiving S0 impulses
DANA-IN Terminal for the analog voltage or current measurement as
well as supply voltage of 24 VDC

4 Product Overview
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 11
Position Designation Explanation
ETEMP-IN Terminals for the temperature measurement
F – Connector strip on the back of the module for connection
to the communication 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.
Figure 3: Design of the type label
Position Explanation
A Device type
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32).

5 Mounting SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-1112
5 Mounting
5.1 Mounting position
DISPLAY
BAT
Max. 30V DC
USB
FCC ID: SVF-KP
IC: 9440A-KP20
MFR
AB
X1 X2
A
B
C
Figure 4: Communication assembly in the inverter with mounting position for the module
Position Designation
A Communication assembly
BModule slot M1*
CModule slot M2
* Production resources SMA Solar Technology AG recommends using module slot M1 for the module.
5.2 Installing the Module
Maximum number of modules of the same device type per inverter
You can only use a maximum of 1 SMA Sensor Module per inverter.
Procedure:
1. DANGER
Danger to life due to high voltages of the PV array
When exposed to sunlight, the PV array generates dangerous DC voltage, which is present
in the DC conductors and the live components of the inverter. Touching the DC conductors
or the live components can lead to lethal electric shocks.
• Prior to performing any work on the inverter, always disconnect the inverter from
voltage sources on the AC and DC sides as described in the inverter manual. When
doing so, note that even if the DC load-break is switched off, there will be dangerous
direct voltage present in the DC conductors of the inverter.
2. To achieve an optimum WLAN range, the module should ideally be installed on module slot
M1. Perform the following steps:

5 Mounting
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 13
• Guide the 3 guide pins on the communication
assembly through the holes in the module. The
holes in which the guide pins must be inserted
depend on the module slot.
• Carefully push the module down on the upper
edge and on the connection sockets at the
same time ( ) until it audibly snaps into both
side locking tabs of the communication
assembly ( ). The connector strip on the back
of the module is automatically pushed into the
socket terminal strip of the communication
assembly.
CLICKCLICK
3. Tighten the fastening screw with a Torx screwdriver
(TX 25) on the module (torque: 1.5Nm). This
additionally fixes the module in place and grounds it
in the inverter enclosure.

6 Connection SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-1114
6 Connection
6.1 Safety during Electrical Connection
DANGER
Danger to life due to high voltages of the PV array
When exposed to light, the PV array generates dangerous DC voltage, which is present in the
DC conductors and the live components of the inverter. Touching the DC conductors or the live
components can lead to lethal electric shocks.
• Disconnect the inverter from voltage sources and make sure it cannot be reconnected
before working on the device.
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.
6.2 Cable Requirements
UV resistance of connection cables
Connection cables to be laid outdoors must be UV-resistant or routed in a UV-resistant cable
channel.
Cable type Requirements
Cable for shielding the
analog input and the
temperature inputs
☐ Number of conductors: 1
☐ Conductor cross-section: 1.5mm²
☐ Cable length: 120mm
Connection cables for
temperature inputs
☐ Number of insulated conductors for tolerance ±2°C: at least two
☐ Number of insulated conductors for tolerance ±0.5°C: at least four
☐ Shielding: yes
☐ Conductor cross-section with four-conductor connection technology:
at least 4x0.25mm²
☐ Maximum cable length for four-conductor connection technology:
20m
☐ Conductor cross-section for two-conductor connection technology: at
least 2x0.25mm²
☐ Maximum cable length for two-conductor connection technology:
2.5m
☐ External cable diameter: 4.5mm to 7.0mm

6 Connection
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 15
Cable type Requirements
Connection cable for
analog input
☐ Number of conductors: at least 2
☐ Shielding: yes
☐ Conductor cross-section: 0.2mm² to 1.5mm²
☐ Maximum cable length: 30m
Connection cable for
S0 interface
☐ Number of conductors: 2
☐ Shielding: yes
☐ Conductor cross-section: 0.2mm² to 1.5mm²
☐ Maximum cable length: 30m
6.3 Preparing the Connection Cable
Prepare each connection cable for connection and the cable for shielding the analog input and the
temperature inputs in accordance with the following procedure for connection to the multipole
terminal blocks.
Procedure:
1. Strip 40mm of cable sheath from the end of the connection cable to which the multipole
terminal block is to be attached. Make sure that no pieces of cable are dropped into the
inverter.
2. Trim the cable shield to a length of 15mm and fold
it over the cable sheath.
3. Press the shield clamp onto the cable shield. The
cable shield must be clamped under the shield
clamp as completely as possible.

6 Connection SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-1116
4. For each connection cable, cut 40mm from the
120mm cable for shielding.
40
(1.57)
120
(4.71)
40
(1.57)
40
(1.57)
5. Remove 6mm of cable sheath from both ends of
each piece of cable and strip off 6mm of the
insulation of each conductor.
6. Attach each cable piece for shielding to a shield
clamp. To do so, plug one end of each cable piece
into the ring terminal lug of the shield clamp and
crimp using a crimping tool.
7. Strip off 6mm of the conductor insulation from each of the connection cable conductors.
8. Trim unneeded insulated conductors of the connection cable flush with the cable sheath.
☑ The connection cable and the cable for shielding
have been prepared for connection.
6.4 Preparing the Enclosure Opening on the Inverter
Additionally required material (not included in the scope of delivery):
• Connection cable (see Section6.2 "Cable Requirements", page14)
Procedure:
1. Make sure that the inverter has been disconnected and is secured against reconnection (see
the inverter manual).
2. Push the filler plug out of the enclosure opening and retain it for later decommissioning.
3. Insert the cable gland supplied from the outside and tighten it with the counter nut from the
inside.
4. Unscrew the swivel nut of the cable gland.

6 Connection
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 17
5. Press the seal out of the cable gland from the inside.
6. Remove the filler plugs from the 4-hole seal depending on the number of connection cables
and store safely for later decommissioning.
7. Lead the connection cable through the swivel nut and seal into the inverter.
8. Screw the swivel nut of the cable gland on loosely.
6.5 Connecting the Temperature Sensor
You can connect 1 outside temperature sensor and 1 module temperature sensor each to the
module. The measured values from the temperature sensors are shown on the user interface of the
inverter.
Additionally required material (not included in the scope of delivery):
☐ Up to 2 temperature sensors
☐ Up to 2 connection cables (see Section6.2, page14)
Requirements:
☐ The temperature sensor must be technically suitable for connection to the temperature input
(see Section9, page30).
☐ The connection cable must be prepared for connection to the multipole terminal block (see
Section6.3, page15).
Figure 5: Pin assignment for terminal TEMP-IN
Temperature input Pin Signal Explanation
External temperature A1 GND Shield ground
A2 I+ Current output
A3 V+ Voltage input
A4 V− Voltage return
A5 I− Current return

6 Connection SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-1118
Temperature input Pin Signal Explanation
Module temperature B1 GND Shield ground
B2 I+ Current output
B3 V+ Voltage input
B4 V− Voltage return
B5 I− Current return
Circuitry overviews:
A2 (B2)
SMA Sensor Module
A3 (B3)
A4 (B4)
A5 (B5)
ϑ
A1 (B1)
Temperature sensor
with Pt100 or Pt1000
measuring shunt Shield
Figure 6: Connection of a temperature sensor with four-conductor connection technology
A2 (B2)
SMA Sensor Module
A3 (B3)
A4 (B4)
A5 (B5)
ϑ
A1 (B1)
Temperature sensor
with Pt100 or Pt1000
measuring shunt Shield
Figure 7: Connection of a temperature sensor with two-conductor connection technology

6 Connection
SMA Solar Technology AG
Installation Manual MDSEN-40-IA-en-11 19
Procedure:
1. Connect the connection cable to the temperature sensor (see the manual from manufacturer).
Trim the unneeded insulated conductors up to the cable shield and note down the conductor
colors.
2. On the 5-pole terminal block, unlock the terminal
position 1 using a suitable tool ( ) and plug the
conductor of the cable piece for shielding into this
terminal position ( ).
2
1
3. For connection to the module using two-conductor connection technology, perform the
following steps:
• On the 5-pole terminal block, unlock the terminal positions 3 and 4 using a suitable tool
and plug the conductors of the connection cable into these terminal positions. Observe
the pin assignment.
• On the 5-pole terminal block, bridge the
terminal positions 2 and 3 as well as the
terminal positions 4 and 5.
4. For connection to the module using four-conductor connection technology, unlock the terminal
positions 2, 3, 4, and 5 on the 5-pole terminal block using a suitable tool and plug the
conductors of the connection cable into these terminal positions. Observe the pin assignment.
5. To connect the outside temperature sensor, plug the 5-pole terminal block into pin row A on
terminal TEMP-IN.
6. To connect the module temperature sensor, plug the 5-pole terminal block into pin row B on
terminal TEMP-IN.
7. If no further connections are required on the module or in the inverter, close the inverter and
commission it (see the inverter manual).
8. If necessary, configure the temperature sensor (see Section7.2, page25).
6.6 Connecting an Irradiation Sensor
You can connect a maximum of 1 irradiation sensor to the module.
Additionally required material (not included in the scope of delivery):
☐ 1 irradiation sensor
☐ 1 connection cable (see Section6.2, page14)
Requirements:
☐ The irradiation sensor must be technically suitable for connection to the analog input (see
Section9, page30).

6 Connection SMA Solar Technology AG
Installation ManualMDSEN-40-IA-en-1120
☐ The connection cable must be prepared for connection to the multipole terminal block (see
Section6.3, page15).
Pin assignment:
Figure 8: Pin assignment for terminal ANA-IN
Pin Signal Explanation
B1 V+ Voltage input
B2 I+ Current input
B3 GND Reference potential of the supply voltage
A1 SHIELD Shield ground
A2 24V Supply voltage 24V DC
A3 GND Reference potential of the supply voltage
Circuitry overviews:
450 R
24 V
24V
I+
A2
B2
A1
SMA Sensor Module
Shield
Irradiation sensor
with current output
Figure 9: Connection of an irradiation sensor with current output