Table Of Contents - Studer VarioString VS-70 User Manual

Mppt solar charge controller
Table of Contents

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Contents
1
INTRODUCTION ...................................................................................................................................... 5
2
GENERAL INFORMATION ....................................................................................................................... 5
2.1
About this user manual ....................................................................................................................... 5
2.2
Important safety instructions .............................................................................................................. 6
2.3
Conventions .......................................................................................................................................... 6
2.4
Quality and warranty .......................................................................................................................... 7
2.4.1
Exclusion of warranty .................................................................................................................. 7
2.4.2
Exclusion of liability ...................................................................................................................... 7
2.5
Warnings and guidelines .................................................................................................................... 8
3
MOUNTING AND INSTALLATION ........................................................................................................... 8
3.1
Storage .................................................................................................................................................. 8
3.2
Unpacking ............................................................................................................................................. 8
3.3
Mounting place.................................................................................................................................... 9
3.4
Fixing/Dimensions ................................................................................................................................. 9
3.4.1
VarioString VS-120........................................................................................................................ 9
3.4.2
VarioString VS-70 ....................................................................................................................... 10
3.4.3
Assembling the cooling fan ECF-01 ....................................................................................... 10
4
WIRING ................................................................................................................................................. 11
4.1
Elements of the cable compartment ............................................................................................ 11
4.1.1
VarioString VS-70 ........................................................................................................................ 12
4.1.2
VarioString VS-120...................................................................................................................... 13
4.2
Connecting the battery ................................................................................................................... 14
4.2.1
Precautions when using the batteries ................................................................................... 14
4.2.2
Connecting the battery ........................................................................................................... 15
4.2.3
Protection device of the battery ........................................................................................... 15
4.3
Photovoltaic generator (PV) ........................................................................................................... 16
4.3.1
Dimensioning .............................................................................................................................. 16
4.3.2
Serial connection (chain or string) of PV modules ............................................................. 17
4.3.3
Parallel connection of PV module strings ............................................................................. 18
4.3.4
Safe use of the photovoltaic modules .................................................................................. 19
4.3.5
Protection devices .................................................................................................................... 19
4.3.6
Cable cross-section and connection ................................................................................... 19
4.3.7
Parallel connection of several VarioString ........................................................................... 19
4.3.8
Extension of an existing installation ........................................................................................ 20
4.4
Earthing ................................................................................................................................................ 20
4.4.1
Detecting an earthing fault .................................................................................................... 20
4.5
Lightning protection .......................................................................................................................... 21
4.6
Connecting the communication cables ...................................................................................... 21
5
POWER-UP OF THE EQUIPMENT ........................................................................................................... 22
6
DISPLAY SYSTEM ................................................................................................................................... 23
6.1
The "SET" button (4) ........................................................................................................................... 23
6.2
"Night" standby indicator (1) .......................................................................................................... 23
6.3
"Charge" cycle indicator (2) .......................................................................................................... 23
6.4
"Error" indicator (3) ............................................................................................................................ 24
6.5
Charging current Indicator (5)-(6)-(7)-(8)-(9)-(10) ....................................................................... 24
7
BATTERY CHARGING PROCESS ........................................................................................................... 25
7.1
General points .................................................................................................................................... 25
7.2
Battery cycle ....................................................................................................................................... 25
7.2.1
Bulk phase (1) ............................................................................................................................. 25
7.2.2
Absorption phase (2) ................................................................................................................ 25
7.2.3
Floating phase (4) ..................................................................................................................... 25
7.2.4
Equalization phase (3) .............................................................................................................. 25
7.2.5
Temperature compensation ................................................................................................... 26
7.3
Default battery charge cycle (original settings) ......................................................................... 26
7.4
Recovery after deep discharge ..................................................................................................... 26
8
REMOTE ENTRY (AVAILABLE AS FROM SOFTWARE VERSION 1.5.22) ............................................... 27
User manual
V 2.3
Studer Innotec SA
VarioString
3

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Mei Mei
May 6, 2025

What is expected if the watchdog (Nr 14218) is set to enabled on VarioString-70 by external inverter via CAN comms?

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