SMA SSM-U-1610 Operating Manual
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SMA SSM-U-1610 Operating Manual

SMA SSM-U-1610 Operating Manual

Sma series string-monitor
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Operating Manual
SMA STRING-MONITOR
SSM-U-1610 / SSM-U-2410 / SSM-U-3210
SSM-U-1615 / SSM-U-2415 / SSM-U-3215
ENGLISH
SSMUXX1015-BE-en-14 | Version 1.4

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Summary of Contents for SMA SSM-U-1610

  • Page 1 Operating Manual SMA STRING-MONITOR SSM-U-1610 / SSM-U-2410 / SSM-U-3210 SSM-U-1615 / SSM-U-2415 / SSM-U-3215 ENGLISH SSMUXX1015-BE-en-14 | Version 1.4...
  • Page 2 The information contained in these documents is property of SMA Solar Technology AG. Any publication, whether in whole or in part, requires prior written approval by 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.

  • Page 3: Table Of Contents

    Mounting................... 21 Selecting the Mounting Location ............21 Mounting the SMA String-Monitor on the Wall ......23 Installation ................25 Overview of the Connection Area of the SMA String-Monitor ..25 Grounding ..................27 6.2.1 Information on Grounding ............27 6.2.2...
  • Page 4 Disconnecting the DC Subdistribution ..........48 Switching the DC Subdistribution Back On ........49 Troubleshooting................ 50 LED States................... 50 9.1.1 Status LEDs of the SMA String-Monitor........50 9.1.2 LEDs of the Network Connection..........51 Performing an Update............... 52 10 Maintenance................53 10.1 Safety during Maintenance ..............
  • Page 5 SMA Solar Technology AG Table of Contents 10.2.1 Notes on Maintenance Work............54 10.2.2 Maintenance Work Every 24 Months ......... 54 10.3 Maintenance Work ................55 10.3.1 Checking the DC Load-Break Switch..........55 10.3.2 Checking the Protective Covers ............ 56 10.3.3 Performing the Visual Inspection...........

  • Page 6: Information On This Document

    1 Information on this Document SMA Solar Technology AG Information on this Document Validity This document is valid for the SMA String-Monitor of the following device types from production version A1: • SSM-U-1610 • SSM-U-2410 • SSM-U-3210 • SSM-U-1615 • SSM-U-2415 •...

  • Page 7: Typographies

    • Select PV system > elements to be selected Detect. [Button/Key] • Button or key to be • Select [Start detection]. selected or pressed Nomenclature In this document, the SMA String‑Monitor is also referred to as "DC subdistribution" or "product". Operating Manual SSMUXX1015-BE-en-14...

  • Page 8: Safety

    DC connectors of the string cables on the DC subdistribution. For any other type or location of the string fusing, SMA Solar Technology AG cannot guarantee safe operation of the SMA String-Monitor or compliance with the required thresholds.

  • Page 9: Safety Information

    SMA Solar Technology AG 2 Safety Safety Information This section contains safety information that must be observed at all times when working on or with the product. 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.
  • Page 10 2 Safety SMA Solar Technology AG Danger to life from electric shock if the product is not locked If the product is not locked, unauthorized persons will have access to live components carrying lethal voltages. Touching live components can result in death or serious injury due to electric shock.

  • Page 11: Personal Protective Equipment

    SMA Solar Technology AG 2 Safety Property damage due to dust intrusion and moisture penetration Dust or moisture intrusion can damage the product and impair its functionality. • Do not open the enclosure during rainfall or when humidity exceeds the specified threshold.

  • Page 12: Scope Of Delivery

    3 Scope of Delivery SMA Solar Technology AG 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 the scope of delivery...

  • Page 13: Product Overview

    Product Overview SMA String-Monitor The SMA String‑Monitor is a PV array junction box to which several strings can be connected in parallel. The SMA String‑Monitor can be operated in large-scale PV power plants with central inverters from SMA Solar Technology AG or other PV inverters.

  • Page 14: External View Of The Dc Subdistribution

    4 Product Overview SMA Solar Technology AG External View of the DC Subdistribution Figure 3: External view of the DC subdistribution Position Designation Lock cylinder Wall bracket lugs Vent plug Enclosure openings for introducing the cables SSMUXX1015-BE-en-14 Operating Manual...

  • Page 15: Components Of The Dc Subdistribution

    Position Designation DC overvoltage protection DC load-break switch • 2-pole at SSM-U-1610 / SSM-U-2410 / SSM-U-3210 • 3-pole at bei SSM-U-1615 / SSM-U-2415 / SSM-U-3215 Terminal for connection of the DC overvoltage protection unit to the functional grounding Operating Manual...
  • Page 16 4 Product Overview SMA Solar Technology AG Position Designation Rotary handle of the DC load-break switch Electronic assembly Protective covers Figure 5: Position of the protective covers Position Designation Top protective cover Bottom protective cover SSMUXX1015-BE-en-14 Operating Manual...

  • Page 17: Terminals On The Electronic Assembly

    SMA Solar Technology AG 4 Product Overview Terminals on the Electronic Assembly 1 2 3 4 5 6 7 8 9 1 112 14 Figure 6: Terminals on the electronic assembly Position Designation Explanation ‒ Connection of string cable harnesses (PV+) and, depend-...

  • Page 18: Type Label

    SMA String-Monitor There are two type labels attached to the SMA String‑Monitor. The type labels are located on the inside of the right-hand door and on the right-hand outside panel of the SMA String‑Monitor. You can read off the following data from the type label: •...

  • Page 19: Symbols On The Product

    SMA Solar Technology AG 4 Product Overview Symbols on the Product The following gives an explanation of all the symbols found on the SMA String-Monitor and on the type label. Symbol Designation Explanation CE marking The product complies with the requirements of the applica- ble EU directives.

  • Page 20: Leds On The Electronic Assembly

    LK/ACT SPEED L‒ Figure 7: LEDs on the electronic assembly Position Designation Color Explanation yellow Update status of the SMA String-Moni- Error in the SMA String-Monitor green Firmware status of the SMA String- Monitor green Voltage supply status of the SMA String-Monitor yellow Communication status of the SMA String-Monitor...

  • Page 21: Mounting

    ☐ The mounting location must be shaded, e.g. under a protective roof. ☐ The mounting location must be suitable for the weight and dimensions of the SMA String‑Monitor. ☐ The mounting location must be suitable for the wind load.
  • Page 22 5 Mounting SMA Solar Technology AG Example: Mounting on PV array substructure • If the PV array is mounted on a free-standing structure, the DC subdistribution can be fixed to this structure in a shaded position. In this case, make sure that there is no danger of rainwater flowing off the module surface and over the enclosure of the DC subdistribution.

  • Page 23: Mounting The Sma String-Monitor On The Wall

    800 mm 150 mm 650 mm Mounting the SMA String-Monitor on the Wall Risk of injury when lifting the DC sub-distribution, or if it is dropped There is risk of injury if the DC sub-distribution is lifted incorrectly or dropped while being transported or when attaching it to or removing it from the wall mounting bracket. Weight of the DC sub-distribution without installed accessories: 35 kg.
  • Page 24 5 Mounting SMA Solar Technology AG – 4 screw anchors if necessary. Take the wall properties into account when selecting the screw anchors. • For mounting the DC subdistribution on the PV module substructure: – 4 screws M6 – 4 washers –...

  • Page 25: Installation

    SMA Solar Technology AG 6 Installation Installation Overview of the Connection Area of the SMA String- Monitor View from Below Figure 10: View of the SMA String-Monitor from below Position Designation Enclosure opening with cable gland for the main cable DC+...
  • Page 26 6 Installation SMA Solar Technology AG Position Designation Enclosure opening with cable gland for the cables of the external 230 V voltage supply Enclosure opening with cable gland for the external functional grounding cable of the power supply assembly Interior View...

  • Page 27: Grounding

    SMA Solar Technology AG 6 Installation Position Designation Busbar for connecting the main cables DC‒ Terminal plate for connecting external functional grounding of the DC surge arrester Cable channel Electronic assembly Strain relief for the cables Grounding 6.2.1 Information on Grounding The parts to be grounded can be connected to a joint grounding electrode.

  • Page 28: Installation Of The Dc Main Cables

    6 Installation SMA Solar Technology AG Procedure: 1. Lead the grounding cable through the corresponding enclosure opening (see Section 6.1, page 25) into the DC subdistribution (see Section 12.1, page 63). 2. Strip the grounding cable by 15 mm. Make sure that no pieces of cable are dropped into the DC subdistribution.

  • Page 29: Options For Installation Of The Dc Main Cables

    SMA Solar Technology AG 6 Installation Failure of data transmission due to incorrect cable routing Non-compliance with the minimum clearances between the DC main cables and the data cable may lead to failure of data transmission. This can result in yield loss.
  • Page 30 6 Installation SMA Solar Technology AG ☐ The width of the terminal lugs must exceed the washer diameter. Washer diameter: 32 mm. This will ensure that the defined torques are effective over the whole surface. ☐ Maximum width of the terminal lugs when connecting two cables per potential: 48 mm.
  • Page 31 SMA Solar Technology AG 6 Installation Assembly of the Connection with Two Terminal Lugs Position Designation Screw M12 Washer Tin-plated copper busbar Fender washer Spring washer Nut M12 Tin-plated tube terminal lug Procedure: 1. Ensure that the DC subdistribution is switched off and secured against reconnection (see Section 8 "Disconnecting and Reconnecting", page 47).

  • Page 32: Connecting The Dc Main Cables To The Busbar Using V Box Terminals

    6 Installation SMA Solar Technology AG 7. Connect the DC main cables to the busbars for the DC main cables (torque: 60 Nm) (see Section 6.1, page 25). To do this, use only the fastening material already attached to the busbars and do not connect more than two DC main cables to each busbar.

  • Page 33: Installing The Box Terminal On The Busbar

    SMA Solar Technology AG 6 Installation 6.3.4.2 Installing the Box Terminal on the Busbar Assembly of the Connection with One Box Terminal Figure 13: Assembly of the Connection with One Box Terminal Position Designation Screw M12 Washer Tin-plated copper busbar...

  • Page 34: Connecting Copper Cables To V-Box Terminal

    6 Installation SMA Solar Technology AG 4. Clean the contact surfaces on the busbar and box terminal using a clean cloth and ethanol cleaning agent. Do not touch the contact surfaces after cleaning. 5. Mount the box terminals on the busbar (torque: 60 Nm). To do this, use only the fastening material already attached to the busbars.

  • Page 35: Connecting Aluminum Cables To V Box Terminal

    SMA Solar Technology AG 6 Installation 6.3.4.4 Connecting Aluminum Cables to V Box Terminal Upon contact with oxygen, an oxide film forms on aluminum surfaces. This oxide film increases transition resistances. For this reason, the insulated conductors of the aluminum cables must be cleaned immediately before connecting them.

  • Page 36: Connecting The Ethernet Cables

    12. Secure the DC main cables to the external cable support rail. Connecting the Ethernet Cables Up to ten SMA String-Monitors can be connected in line topology to each string monitoring communication terminal of the inverter (for number of string monitoring communication terminals, see inverter manual).
  • Page 37 SMA Solar Technology AG 6 Installation System topology for Ethernet communication: Figure 14: System topology for Ethernet communication with SMA String-Monitor (example) Position Designation SMA String-Monitor Inverter (example) Additionally required accessories (not included in scope of delivery): ☐ LSA+ insertion tool Damage to the assembly due to the use of unsuitable tools The use of unsuitable tools can lead to the damage of the assembly.

  • Page 38: Connection Of Sensors

    6 Installation SMA Solar Technology AG 4. Connect the Ethernet cable at the input of the electronic assembly X9 / LAN IN and, if necessary, to the output of the electronic assembly X7 / LAN OUT. While doing so, use the LSA+ insertion tool and connect all eight insulated conductors to the electronic assembly.

  • Page 39: Connecting An Irradiation Sensor Or Anemometer To The Analog Input

    SMA Solar Technology AG 6 Installation Circuitry Overview Figure 15: Connection X2 or X3 for temperature sensor Procedure: 1. Connect the cable to the sensor (see manufacturer manual). Trim the unneeded insulated conductors up to the cable shield and note down the conductor colors.
  • Page 40 6 Installation SMA Solar Technology AG ☐ Shielding: yes ☐ Conductor cross-section: 0.08 mm to 1 mm ☐ Maximum cable length: 30 m ☐ External cable diameter: 3.2 mm to 6.5 mm Additionally required material (not included in the scope of delivery): ☐ 1 irradiation sensor or 1 anemometer ☐...

  • Page 41: Connecting The Remote Terminal To The Digital Input

    SMA Solar Technology AG 6 Installation Connecting the Remote Terminal to the Digital Input You can connect e.g. a remote signaling contact to the digital input of the DC subdistribution. Cable requirements: ☐ Number of insulated conductors: at least two ☐...

  • Page 42: Installation Of The String Cables

    6 Installation SMA Solar Technology AG Additionally required material (not included in the scope of delivery): ☐ 1 remote terminal ☐ 1 connection cable Requirement: ☐ The remote terminal must be technically suitable for connection to the digital output of the DC subdistribution (see Section 13, page 66).

  • Page 43: Installing The String Cables

    6 Installation 6.8.2 Installing the String Cables The SMA String-Monitor is supplied with string cable harnesses and DC connectors fitted at the factory. Danger to life due to electric shock from live PV voltage As soon as the string cables are connected, the electronic assembly and other voltage-carrying components will be energized.
  • Page 44 1. Ensure that the DC subdistribution is switched off and secured against reconnection (see Section 8 "Disconnecting and Reconnecting", page 47). 2. Ensure that there is no ground fault in the PV array (see service manual at www.SMA- Solar.com). 3. On the DC subdistribution, remove the protection foil from the cable harnesses for connection of the PV strings.
  • Page 45 SMA Solar Technology AG 6 Installation – If no inline fuse connectors are used, plug the assembled DC connectors of the PV module string cables (PV‒) into the DC connectors of the string cable harness (PV‒) in the DC subdistribution.

  • Page 46: Commissioning The Dc Subdistribution

    7 Commissioning the DC Subdistribution SMA Solar Technology AG Commissioning the DC Subdistribution The commissioning report of the inverter must be completed during commissioning. Requirements: ☐ The DC load-break switch must be switched off. ☐ The DC main cables must be connected to the inverter or DC main distribution box and disconnected from voltage sources.

  • Page 47: Disconnecting And Reconnecting

    SMA Solar Technology AG 8 Disconnecting and Reconnecting Disconnecting and Reconnecting Safety When Disconnecting and Reconnecting Voltage Sources Danger to life from electric shock due to live voltage High voltages are present in the live components of the DC subdistribution. Touching live components results in death or serious injury due to electric shock.

  • Page 48: Disconnecting The Dc Subdistribution

    8 Disconnecting and Reconnecting SMA Solar Technology AG Risk of burns due to hot inline fuse connectors During operation, the temperature of the inline fuse connectors can reach up to 90°C. Touching the inline fuse connectors can result in burns.

  • Page 49: Switching The Dc Subdistribution Back On

    2. Ensure that the DC load-break switch in the DC subdistribution is switched off and secured against reconnection. 3. Ensure that there is no ground fault in the PV array (see service manual at www.SMA- Solar.com). 4. Remount the protective covers on the DC subdistribution (see Section 12.2, page 64).

  • Page 50: Troubleshooting

    • Contact the Service (see Section 15, page 75). Normal operation AL (green) The firmware is faulty. Corrective measures: • Update the firmware of the SMA String-Monitor (see inverter manual). The firmware is faulty. Corrective measures: • Update the firmware of the SMA String-Monitor (see inverter manual).

  • Page 51: Leds Of The Network Connection

    SMA Solar Technology AG 9 Troubleshooting Status Cause and corrective measure COM (yellow) At present no data exchange in progress. At present data exchange in progress. flashing At present data exchange in progress. 9.1.2 LEDs of the Network Connection Status...

  • Page 52: Performing An Update

    9 Troubleshooting SMA Solar Technology AG Performing an Update SMA String-Monitor updates are carried out via the SMA inverter (see inverter manual). SSMUXX1015-BE-en-14 Operating Manual...

  • Page 53: Maintenance

    SMA Solar Technology AG 10 Maintenance 10 Maintenance 10.1 Safety during Maintenance Danger to life from electric shock due to live voltage High voltages are present in the live components of the product. Touching live components results in death or serious injury due to electric shock.

  • Page 54: Maintenance Schedule And Consumables

    • If the DC subdistribution is subject to adverse ambient conditions, it is recommended to shorten the maintenance intervals. • SMA recommends an optical inspection every six months to determine the maintenance requirements. Maintenance report for maintenance Maintenance and repair works are to be documented in a maintenance report. The maintenance report can be found in the download area at www.SMA-Solar.com.

  • Page 55: Maintenance Work

    SMA Solar Technology AG 10 Maintenance Task Performing the visual inspection Section 10.3.3, page 56 Checking the condensate drain Section 10.3.4, page 57 Checking the vent plug Section 10.3.5, page 57 Checking the seals Section 10.3.6, page 57 Checking the labels Section 10.3.7, page 58 Checking the LEDs Section 10.3.8, page 59 Checking the bolted, clamp and plug connections Section 10.3.9, page 59...

  • Page 56: Checking The Protective Covers

    10 Maintenance SMA Solar Technology AG 10.3.2 Checking the Protective Covers Danger to life from electric shock due to live voltage High voltages are present in the live components of the DC subdistribution. Touching live components results in death or serious injury due to electric shock.

  • Page 57: Checking The Condensate Drain

    SMA Solar Technology AG 10 Maintenance 4. Check the enclosure of the DC subdistribution for defects or leaks, e.g. soiled or damaged areas. Remove any soiling with a non-abrasive damp cloth. If damage is detected which impairs the function of the DC subdistribution or causes the enclosure to leak, contact Service (see Section 15, page 75).

  • Page 58: Checking The Labels

    10 Maintenance SMA Solar Technology AG Procedure: 1. Check whether the seals around the edges of the DC subdistribution door show any damage. If seals are damaged, contact Service (see Section 15, page 75). 2. Apply talcum, petroleum jelly or wax to seals. This will prevent frost damage.

  • Page 59: Checking The Leds

    SMA Solar Technology AG 10 Maintenance Position SMA order number Designation 86-104500.03 Reference designation label 86-116100.01 Symbol "Hot components" * Includes the three given labels in the appropriate languages. Procedure: 1. Check whether any warning message or label is damaged or missing.

  • Page 60: Checking The Inline Fuse Connectors

    10 Maintenance SMA Solar Technology AG 10.3.10 Checking the Inline Fuse Connectors Danger to life due to electric arc An electric arc may occur when plugging or removing the DC connectors or the inline fuse connectors under load and in case of a reverse-poled connection of the DC connectors. Electric arcs can result in death or serious injury.

  • Page 61: Decommissioning

    SMA Solar Technology AG 11 Decommissioning 11 Decommissioning 11.1 Decommissioning the DC Subdistribution Danger to life from electric shock due to live voltage High voltages are present in the live components of the DC subdistribution. Touching live components results in death or serious injury due to electric shock.

  • Page 62: Packing The Dc Subdistribution

    11 Decommissioning SMA Solar Technology AG Risk of injury when lifting the DC sub-distribution, or if it is dropped There is risk of injury if the DC sub-distribution is lifted incorrectly or dropped while being transported or when attaching it to or removing it from the wall mounting bracket. Weight of the DC sub-distribution without installed accessories: 35 kg.

  • Page 63: Periodic Actions

    SMA Solar Technology AG 12 Periodic Actions 12 Periodic Actions 12.1 Insert the cable into the inverter. 12.1.1 Leading Cables through Enclosure Opening with Membrane Property damage due to dust intrusion and moisture penetration Excessively large or redundant holes in the membranes of the cable feed-through plate can cause dust or moisture to penetrate the DC subdistribution.

  • Page 64: Disassembling And Mounting The Protective Covers

    12 Periodic Actions SMA Solar Technology AG 7. Cut the cable to length. 8. Tighten the cable gland with the appropriate torque: • Cable gland for DC main cable: 7.5 Nm • Cable gland for external voltage supply: 4.0 Nm • Cable gland for external functional grounding of the AC Piggy-Back: 2.5 Nm 12.2 Disassembling and Mounting the Protective Covers...
  • Page 65 SMA Solar Technology AG 12 Periodic Actions Danger to life from electric shock due to live voltage High voltages are present in the live components of the DC subdistribution. Touching live components results in death or serious injury due to electric shock.

  • Page 66: Technical Data

    13 Technical Data SMA Solar Technology AG 13 Technical Data Enclosure Outdoor installation Shaded Material Glass-fiber reinforced plastic Combustion properties Self-extinguishing, halogen-free IP degree of protection in accordance with IP54 IEC 61140 IK degree of protection in accordance with IK10 IEC 62262...
  • Page 67 800 mm floor if inline fuse connectors are installed under- neath the SMA String-Monitor * available as an accessory (see Section 14, page 73) ** depending on the number of string inputs of the SMA String-Monitor, without accessories Electrical Data PV array Negatively grounded/positively grounded/...
  • Page 68 13 Technical Data SMA Solar Technology AG Current Measurement Number of measuring channels 16 / 24 / 32 Current measurement range −4 A to +19 A Maximum error at +25°C* ±0.5 % Maximum error in temperature range* ±1.0 % * based on the end value of the current measurement range...
  • Page 69 SMA Solar Technology AG 13 Technical Data Connecting the String Cable to the DC Connector* Cable type PV 1-F Conductor cross-section at 6 mm DC connector 2.5 mm to 6.0 mm Cable diameter at 6 mm DC connector 5 mm to 8 mm Conductor cross-section at 16 mm DC connec- 6 mm...
  • Page 70 13 Technical Data SMA Solar Technology AG Interfaces for Temperature Measurement Cable gland Multiple feed-through Sealing range of cable gland 3.2 mm to 6.5 mm * based on the measurement range end value (with four-wire measurement) Digital input (customer) Number Supply voltage 24 V ±20%...
  • Page 71 SMA Solar Technology AG 13 Technical Data Analog Current Input Maximum error in temperature range* ±2.0 % Connection Spring-cage terminal with actuation lever on the electronic assembly Maximum cable length 30 m Conductor cross-section 0.08 mm to 1.00 mm Cable gland Multiple feed-through Sealing range of cable gland 3.2 mm to 6.5 mm / 5.0 mm to 10.2 mm...
  • Page 72 13 Technical Data SMA Solar Technology AG Data Transmission Optical Fiber* Data interface Modbus (TCP) Local area network (LAN) Ethernet Direct connection multimode optical fiber cable SC coupling to optical fiber Piggy-Back** Fiber type Multimode 50.0/125.0 µm or 62.5/125.0 µm Fiber grade...

  • Page 73: Accessories

    SMA Solar Technology AG 14 Accessories 14 Accessories You will find the accessories for your product in the following overview. If required, these can be ordered from SMA Solar Technology AG or your distributor. Designation Brief description SMA order number...
  • Page 74 14 Accessories SMA Solar Technology AG Designation Brief description SMA order number Alarm contact set for Alarm contact set 1 NO (make SSM-U-AUXCONT SMA String-Monitors contact) for the SMA String- Monitor switch state indicator Ethernet overvoltage protection Overvoltage protection for the SSM-U-COMOVP set for SMA String-Monitors Ethernet communication of the SMA String-Monitor...

  • Page 75: Contact

    SMA Solar Technology AG 15 Contact 15 Contact If you have technical problems with our products, please contact the SMA Service Line. We require the following information in order to provide you with the necessary assistance: • Device type • Serial number •...
  • Page 76 +971 2234 6177 +91 22 61713888 SMA Solar (Thailand) Co., Ltd. 대한민국 SMA Technology Korea Co., Ltd. 서울 +66 2 670 6999 +82-2-520-2666 South Africa SMA Solar Technology South Argentina SMA South America SPA Africa Pty Ltd. Brasil Santiago Cape Town Chile +562 2820 2101 08600SUNNY (08600 78669) Perú...
  • Page 78 SMA Solar Technology www.SMA-Solar.com...

This manual is also suitable for:

Ssm-u-2410Ssm-u-2415Ssm-u-3210Ssm-u-3215

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