SolarMax SM30HT4 User manual

Instruction manual
SolarMax HT series
30HT4 / 32HT4

2
Contents
1 Notes on this instruction manual � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5
1.1 Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Target groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Where to keep this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Symbols used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Symbols on inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Description � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 8
3.1 Identication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Safety installations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.5 Views of the unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.6 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4 Installation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14
4.1 Transporting and storing inverters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.2 Lifting the inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.3 Checking the delivery for completeness . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.4 Selecting the installation location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.5 Mounting the inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
5 Electrical connection � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 21
5.1 Removing the cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Connection area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3 Connecting the inverter to the mains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.4 Connecting the inverter to the PV generator . . . . . . . . . . . . . . . . . . . . . . . . 25
5.5 Network connections (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.6 Connecting status signaling contacts (optional) . . . . . . . . . . . . . . . . . . . . . 29
5.7 External shutdown (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.8 External output control (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6 Commissioning� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 34
6.1 Activating the inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2 Initial start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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6.2.3 Country-specic menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.3 Auto test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.4.1 Changing parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.4.2 Setting the display language and system time. . . . . . . . . . . . . . . . 39
6.4.3 Setting the network parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.4.4 Conguring the status signaling contacts . . . . . . . . . . . . . . . . . . . 41
6.5 Displaying the conguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.5.1 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.5.2 Description of extended functions and parameters . . . . . . . . . . . . 43
6.6 Displaying measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.7 Registering for MaxView. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7 Operation� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 51
7.1 Graphics display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.2 Menu structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.3 Displaying the operating data overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.4 Displaying Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.5 Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.5.1 Displaying the daily statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.5.2 Displaying the monthly statistics. . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.5.3 Displaying the annual statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.5.4 Displaying the total statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.5.5 Deleting the statistics values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.6 Displaying information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.7 Displaying the operating status of the inverter . . . . . . . . . . . . . . . . . . . . . . 57
7.7.1 "Booting" operating status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.7.2 "Mains operation" operating status. . . . . . . . . . . . . . . . . . . . . . . . 58
7.8 Displaying the operating status of the MPP trackers. . . . . . . . . . . . . . . . . . 59
8 Troubleshooting � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 60
8.1 SolarMax Service Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.2 Diagnosis and actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.2.1 General troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8.2.2 Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.2.3 "Failure" operating status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.2.4 "Error" operating status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
8.2.5 "Blocked" operating status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9 Maintenance � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 63

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10 Decommissioning� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 64
10.1 Instructions for inverter replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
10.2 Dismounting the inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
10.3 Disposing of the inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11 Technical data � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 66
11.1 Efciency curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.2 Temperature-dependent output reduction . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.3 MaxComm compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11.4 Country-specic settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
12 Accessories and options � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 70
13 Warranty � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 71

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1 Notes on this instruction manual
1�1 Scope
This instruction manual is applicable to the following SolarMax inverters:
Type Item No�
SM30HT4 10 006 012
SM32HT4 10 006 011
1�2 Target groups
This instruction manual is intended for the operator of the plant and the installer of the
PV power plant.
The instructions in chapters 5, 6�2, 8 (troubleshooting actions) and 10 may only be car-
ried out by trained electricians (e.g. electricians, electric systems technicians, electrical
mechanics, industrial electronics technicians).
The instructions in chapter 4should only be carried out by specialist transport personnel.
1�3 Where to keep this manual
The plant operator must ensure that this instruction manual is available to the relevant
persons at all times. If this original document is lost, an up-to-date version of this instruc-
tion manual can be downloaded from our website at any time (www.solarmax.com).
1�4 Symbols used
The following safety instructions and general information are used within this instruction
manual.
DANGER!
Non-observance of these safety instructions results in serious injuries or
death.
WARNING!
Non-observance of these safety instructions may result in serious injuries or
death.
CAUTION!
Non-observance of these safety instructions may result in minor or extensive
injuries.

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ATTENTION!
Non-observance of these safety instructions may result in material damage.
Note
Notes contain additional information or facilitate operation of the inverter.
2 Safety
2�1 Intended use
SolarMax HT series inverters are designed exclusively for the conversion of the direct cur-
rent generated by PV modules into alternating current which conforms to the parameters
of the public grid. Any other use is contrary to the intended use.
Inverters of the HT series may only be used in combination with PV modules which comply
with the IEC 61730 standard. Inverters of the HT series may only be connected to Class
II PV generators.
2�2 Safety instructions
DANGER!
Fatal electric shock hazard!
In daylight the PV generator supplies the inverter with a dangerously high DC
voltage.
 Make sure that all electrical input conductors to the inverter are de-ener-
gized before starting any work on the inverter or the input conductors.
DANGER!
Fatal electric shock hazard!
Components within the inverter are charged with a high voltage.
 Never open the inverter while it is in operation.
WARNING!
Risk of injury from electric arc!
Removing the DC connectors when live can lead to dangerous electric arcs.
 Switch off the DC disconnector at the inverter before removing the DC
connectors.

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2�3 Symbols on inverter
Symbol Description
OThe DC disconnector is switched off (the contacts are open).
IThe DC disconnector is switched on (the contacts are closed).
+ − Positive or negative pole of input voltage (DC)
Risk of death from high voltages! Only qualied electricians may
perform work on the inverter.
Careful - hot surfaces!
5 min
Risk of death due to high voltages in the inverter! De-energize the
inverter. Proceed to wait for 5 minutes before opening the inverter.
Only qualied electricians may perform work on the inverter.
Operating instructions - Please read and follow the instructions
supplied with the inverter. Do not remove any symbols on the inverter.
Replace any damaged symbols.
CE marking - The inverter complies with the requirements of the
European EMC Directive 2004/108/EC and the Low Voltage Directive
2006/95/EC (see Section 11).
GS marking - The inverter complies with the relevant requirements of
the German Product Safety Act.
Do not dispose of the inverter and its accessory components in the
household waste.

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3 Description
3�1 Identication
The inverter can be identied on the basis of the information provided on the nameplate
(see Section 3.5).
3�2 Functionality
Automatic operation
Inverter operation is completely automatic and depends on the available output of the PV
generator. If there is enough power, the inverter starts mains operation and feeds into
the power grid. If there is not enough power available from the PV generator, the inverter
disconnects from the grid and shuts down.
Operation
The graphics display with three function keys allows convenient inverter operation and
reading of all important operating data. The graphics display is only switched on when the
DC input voltage is high enough.
The DC disconnector can be used to switch the PV generator on or off at any time. The
components of the inverter remain live even when the DC disconnector is switched off.
Remote monitoring
For the purpose of monitoring the PV plant remotely, Ethernet and RS485 interfaces are
provided. The inverter can be directly connected to the internet via Ethernet (MaxView).
The inverter is equipped with status signaling contacts for displaying the operating status
remotely.
Extended functions
The inverter has functions for grid monitoring, limitation of output and reactive power
control. These can be congured with additional software.
Remote controlled output limitation and reactive power control can be achieved using the
MaxWebxp and MaxRemote accessory components.
Ventilation
The inverter is air cooled. Fans draw in the air through the air inlet on the right-hand side
of the inverter. Then the air is conducted across the internal cooling elements. The air
outlet is on the left-hand side of the inverter.

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3�3 Safety installations
Surge protection
The inverter is tted with surge arresters (varistors) at its input and output. Each MPP
tracker (plus and minus connections) is equipped with a surge arrester. On the AC side,
each mains phase has a surge arrester (for details on the surge arresters tted, see
Section 11).
When designing the PV system, it may be necessary to provide additional external light-
ning protection.
Fault current monitoring
The inverter has an AC/DC sensitive leakage current sensor which monitors the stray
currents occurring on the generator side. This sensor can distinguish between the oper-
ational capacitive stray currents (caused by capacities of the PV modules to ground) and
leakage currents (caused by touching a pole of the PV generator). If the inverter detects
an excess in the permissible leakage or stray currents, it will disconnect from the grid.
Functions for current and output limitation
When it is needed, the inverter limits the DC feed-in current, the output power and the
output current.
Temperature limitation
At ambient temperatures of more than 45°C the equipment temperature may reach more
than 80°C. In such cases, the maximum in-feed power is temporarily reduced. When the
equipment temperature rises above 85°C, the inverter disconnects from the grid.

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3�4 Dimensions
[mm]
590
580
397
847
871
Figure 1 Dimensions (with wall mounting bracket)

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3�5 Views of the unit
234
12 11
9
10
8 7
76
1
5
Figure 2 Views of the unit

12
No� Description
1Ventilation inlet
2 Cover
3 Graphics display
4Type plate
5Safety brackets
6 Wall mounting bracket
7 Handles (for lifting the inverter by hand)
8Ventilation outlet
9 "AC mains" cable gland (AC input conductor)
10 "COMM" multiple cable gland (for communication cables)
11 DC disconnector (can be locked with a padlock)
12 DC terminals

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3�6 Block diagram
I
0
U
U
U U U
DC measurement DC measurement
AC measurement AC measurement
Fan Fan
Inverter control Inverter control
Booster control Booster control
Inverter
LC lter LC lter
Booster 2
Booster 1
DC DC
AC
Inverter
DC
AC
K2
K5
K1
DC
DC
DC
DC
DC
DC
DC
Control unit MPP tracker 1/2 Control unit MPP tracker 3/4
Graphics display
DC disconnector Q1
DC input
MPP tracker 1
DC input
MPP tracker 2
DC input
MPP tracker 3
DC input
MPP tracker 4
AC output
EMC lter EMC lter EMC lter EMC lter EMC lter
EMC lter
Status signalling contact MPP tracker 1/2 Status signalling contact MPP tracker 3/4
Communication module
K4
K3
Booster 4
Booster 3
External shutdown Ethernet RS485 RS485
Figure 3 Block diagram

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4 Installation
4�1 Transporting and storing inverters
Make sure that the ambient conditions during transportation and storage are within the
specied limits (for details see Section 11).
4�2 Lifting the inverter
The inverter is tted with handles (Figure 2/Pos. 7), which can be used to lift the inverter
from the packaging by hand.
CAUTION!
Risk of injury - the inverter is heavy!
The inverter weighs approx. 70 kg.
 Do not mount the inverter without the help of a second person.

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4�3 Checking the delivery for completeness
Check the contents of the delivered package for completeness and possible damage. In
the case of an inadequate delivery, please contact your dealer or the SolarMax Service
Center.
Gerätedokumentation
SolarMax HT-Serie
30HT4/ 32HT4
2
3
4
5
6
7
8
9
10
11
12
13
1
14
15
16
17
Figure 4 Content of delivery
No� Quantity Description
1 1 Inverter
2 1 Instruction manual
316 Locking clip (for locking the DC connector)
4 2 Safety brackets (for installation of inverter)
5 1 6-pole connector (for connection of status signaling contacts)
6 1 4-pole connector (RS485 connection)
7 1 3-pole connector (connection of external grid monitoring)

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No� Quantity Description
8 3 Locking pins (for multiple cable gland)
9 1 M5 toothed washer (connection of second protective conductor)
10 1 M5 cable shoe (connection of second protective conductor)
11 1 M5 circlip (connection of second protective conductor)
12 1M5 washer (connection of second protective conductor)
13 1 M5 nut (connection of second protective conductor)
14 8 10 x 50 wall plugs (mounting of inverter)
15 8 M6 x 18 washers (mounting of inverter)
16 8 6 x 60 Torx pan head screws (mounting of inverter)
17 1 Mounting plate (mounting of inverter)
4�4 Selecting the installation location
DANGER!
Fatal re or explosion hazard!
The inverter is an electrical device with heat generation and the possibility of
sparking.
 Install the inverter in an environment that is free of ammable gases and
uids.
 Never install the inverter near combustible materials. The installation sub-
strate must be non-combustible.
 Follow the local re safety regulations.
CAUTION!
Risk of injury - the inverter is heavy!
The inverter weighs approx. 70 kg.
 The installation substrate must have sufcient structural strength.
Location and installation conditions
 The ambient conditions are specied in the specications, see Section 11.
 Select a dry location protected from water and snow.
 Do not expose the inverter to direct sunlight.
 Install the inverter in an easily accessible location, so that maintenance work can be
carried out easily.
 When mounting the unit observe the following minimum distances:

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50
100
50
[cm]
50
50 50
50
50
Figure 5 Minimum installation distances
 Do not mount the inverter at an angle or on its side:
Figure 6 Unacceptable mounting positions
 Appropriate cooling of the inverter can only take place when the ventilation openings
on the sides are kept clear.
 The ambient air around the inverter must be free from dust, salt and ammonium
vapors.
 The location must meet the requirements regarding emissions and freedom from
electromagnetic interference.

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4�5 Mounting the inverter
Install the inverter to a vertical wall using the mounting plate. The mounting plate and the
xing material are included in the delivery.
Fixing the mounting plate
1. Use the mounting plate as a drilling template.
2. Use a spirit level to align the mounting plate horizontally.
3. Mark 6 places for drilling:
205
553
[mm]
226
574
23
25 25 25
23
89
226
230
12 x ø8.5
Figure 7 Dimensions of mounting plate
4. Drill the Ø10 x 60 mm holes.
5. Fix the mounting plate.

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– Installation sequence: 10 x 50 wall plugs, mounting plate, M6 washers, 6 x 60 Torx
pan head screws.
Figure 8 Fixing the mounting plate
Engage the inverter in the mounting plate
6. With the help of a second person, engage the inverter in the seats of the mounting
plate:
Figure 9 Engaging the inverter in the mounting plate

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Securing the inverter
7. Drill two Ø10 x 60 mm holes.
8. Secure the inverter with the 2 safety brackets (included in the delivery).
– Installation sequence: 10 x 50 wall plugs, safety bracket, M6 washers, 6 x 60 Torx
pan head screws.
Figure 10 Securing the inverter
Note
The safety brackets can also be tted laterally.