INVT SPC Series User manual

SPC Series Solar Pump Inverter Change history
No.
Change description
Version
Release date
1
First release
V1.0
November 2021

SPC Series Solar Pump Inverter Contents
-i-
Contents
Contents....................................................................................................................................i
1 Safety precautions ...............................................................................................................1
1.1 Safety definition............................................................................................................1
1.2 Warning........................................................................................................................1
1.3 Safety guidelines..........................................................................................................2
1.3.1 Delivery and installation.....................................................................................2
1.3.2 Commissioning and running ..............................................................................3
1.3.3 Maintenance and component replacement........................................................3
1.3.4 Disposal .............................................................................................................4
2 Product overview..................................................................................................................5
2.1 Unpacking inspection...................................................................................................5
2.2 Product nameplate.......................................................................................................5
2.3 Model designation code ...............................................................................................5
2.4 Product specifications ..................................................................................................6
2.5 Product ratings.............................................................................................................7
3 Installation guidelines..........................................................................................................8
3.1 Mechanical installation environment............................................................................8
3.1.1 Installation environment.....................................................................................8
3.1.2 Installation direction .........................................................................................10
3.1.3 Installation method...........................................................................................10
3.2 Standard wiring ..........................................................................................................11
3.2.1 Main circuit terminals .......................................................................................11
3.2.2 Control circuit terminals ...................................................................................12
4 Keypad operation guidelines ............................................................................................13
4.1 Keypad introduction ...................................................................................................13
4.2 Keypad display...........................................................................................................15
4.2.1 Displaying stopped-state parameters ..............................................................15
4.2.2 Displaying running-state parameters...............................................................15
4.2.3 Displaying fault information..............................................................................15
4.2.4 Editing function codes......................................................................................15
4.3 Operation procedure ..................................................................................................16
4.3.1 Modifying function codes .................................................................................16
4.3.2 Setting a password for the inverter..................................................................17
4.3.3 Viewing inverter status.....................................................................................17
5 Commissioning guidelines................................................................................................18
5.1 Check before running.................................................................................................18
5.2 Trial run ......................................................................................................................18
5.3 Parameter settings.....................................................................................................18

SPC Series Solar Pump Inverter Contents
-ii-
5.4 Advanced settings ......................................................................................................18
5.4.1 Water discharge speed PI adjustment.............................................................18
6 Function parameter list......................................................................................................19
6.1 Function parameters related to control ......................................................................19
P00 group Basic functions ........................................................................................19
P01 group Start and stop control ..............................................................................23
P02 group Parameters of motor 1.............................................................................23
P04 group Space voltage vector control...................................................................25
P05 group Input terminals.........................................................................................28
P06 group Output terminals......................................................................................29
P07 group Human-machine interface.......................................................................30
P08 group Enhanced functions.................................................................................34
6.2 Function parameters special for solar water pump....................................................35
P11 group Protection.................................................................................................35
P13 group SM control ...............................................................................................37
P14 group Serial communication..............................................................................38
P15 group Functions special for solar inverter..........................................................40
P17 group Status viewing .........................................................................................47
P18 group Status viewing functions special for solar inverter ..................................48
7 Fault diagnosis and solution.............................................................................................50
Appendix A Options..............................................................................................................55
A.1 RMS and monitoring app...........................................................................................55
A.1.1 Product overview.............................................................................................55
A.1.2 Installation and delivery...................................................................................56
A.2 Cable..........................................................................................................................56
A.2.1 Powe cable......................................................................................................56
A.2.2 Control cable ...................................................................................................56
A.3 Reactor ......................................................................................................................57
Appendix B Recommended PV module configuration......................................................59
B.1 PV module configuration recommended by inverter model.......................................59
Appendix C Dimension drawings ........................................................................................60
C.1 External keypad structure..........................................................................................60
C.2 Dimensions of 2.2–7.5kW models.............................................................................61
Appendix D Further information..........................................................................................62
D.1 Product and service queries......................................................................................62
D.2 Feedback on INVT inverter manuals.........................................................................62
D.3 Documents on the Internet ........................................................................................62

SPC Series Solar Pump Inverter Safety precautions
-1-
1 Safety precautions
Read this manual carefully and follow all safety precautions before moving, installing,
operating and servicing SPC series solar pump inverter. Otherwise, equipment damage
or physical injury or death may be caused.
We shall not be liable or responsible for any equipment damage or physical injury or
death caused due to your or your customers’ failure to follow the safety precautions.
If not otherwise specified, the inverter in this manual always indicates SPC series solar
pump inverter.
1.1 Safety definition
Danger: Severe personal injury or even death can result if related requirements are not
followed.
Warning: Personal injury or equipment damage can result if related requirements are not
followed.
Note: Actions taken to ensure proper running.
Trained and qualified professionals: People operating the equipment must have
received professional electrical and safety training and obtained the certificates, and
must be familiar with all steps and requirements of equipment installing, commissioning,
running and maintaining and capable to prevent any emergencies.
1.2 Warning
Warnings caution you about conditions that can result in severe injury or death and/or
equipment damage and advice on how to prevent dangers. The following table lists the
warning symbols in this manual.
Symbol
Name
Description
Abbreviation
Danger
Danger
Severe personal injury or even death
can result if related requirements are not
followed.
Warning
Warning
Personal injury or equipment damage
can result if related requirements are not
followed.
Do not
Electrostatic
sensitive
The PCBA may be damaged if related
requirements are not followed.
Hot sides
Hot sides
Do not touch. The inverter base may
become hot.
Note
Note
Actions taken to ensure proper running.
Note

SPC Series Solar Pump Inverter Safety precautions
-2-
1.3 Safety guidelines
Only trained and qualified professionals are allowed to carry out related
operations.
Do not perform wiring, inspection or component replacement when
power supply is applied. Ensure all the input power supplies have been
disconnected before wiring or inspection, and wait for at least the time
designated on the inverter or until the DC bus voltage is less than 36V.
The minimum waiting time is listed in the following.
Inverter model
Minimum waiting time
220V
2.2kW
5 minutes
380V
4kW–7.5kW
5 minutes
Do not refit the inverter unless authorized; otherwise fire, electric shock
or other injury may result.
The base may become hot when the machine is running. Do not touch.
Otherwise, you may get burnt.
The electrical parts and components inside the inverter are electrostatic
sensitive. Take measurements to prevent electrostatic discharge when
performing related operations.
1.3.1 Delivery and installation
Do not install the inverter on inflammables. In addition, prevent the
inverter from contacting or adhering to inflammables.
Do not run the inverter if it is damaged or incomplete.
Do not contact the inverter with damp objects or body parts. Otherwise,
electric shock may result.
Select appropriate tools for inverter delivery and installation to ensure the safe and
proper running and avoid physical injury or death. To ensure personal safety, take
mechanical protective measures like wearing safety shoes and working uniforms.
Do not carry the inverter only by its front cover as the cover may fall off.
Protect the inverter against physical shock or vibration during delivery and
installation.
The installation site must be away from children and other public places.
As inverter leakage current caused during running may exceed 3.5mA, ground
properly and ensure the grounding resistance is less than 10Ω. The conductivity of
PE grounding conductor is the same as that of the phase conductor (with the same

SPC Series Solar Pump Inverter Safety precautions
-3-
cross sectional area).
(+) and (-) are the DC power input terminals, while U, V, and W are the output
motor-connection terminals. Connect the input power and motor cables properly;
otherwise, the inverter may be damaged.
1.3.2 Commissioning and running
Cut off all power supplies connected to the inverter before terminal
wiring, and wait for at least the time designated on the inverter after
disconnecting the power supplies.
High voltage presents inside the inverter during running. Do not carry
out any operation on the inverter during running except for keypad
setup.
The inverter cannot be used as an "Emergency-stop device".
The inverter cannot act as an emergency brake for the motor; it is a
must to install a mechanical braking device.
Do not switch on or switch off the input power supplies of the inverter frequently.
If the inverter has been stored for a long time without being used, check the
capacitors, perform capacitor reforming, and carry out pilot run for the inverter
before the use.
Close the inverter front cover before running; otherwise, electric shock may occur.
1.3.3 Maintenance and component replacement
Only trained and qualified professionals are allowed to perform
maintenance, inspection, and component replacement for the inverter.
Cut off all power supplies connected to the inverter before terminal
wiring, and wait for at least the time designated on the inverter after
disconnecting the power supplies.
During inverter maintenance and component replacement, take
measures to prevent screws, cables and other conductive matters from
falling into the internal of the inverter; in addition, take electrostatic
discharge protection measures for the inverter and its internal
components.
Use proper torque to tighten screws.
During maintenance and component replacement, keep the inverter and its parts
and components away from combustible materials and ensure they have no
combustible materials adhered.
Do not carry out insulation voltage-endurance test on the inverter, or measure the
control circuit of the inverter with a megohmmeter.

SPC Series Solar Pump Inverter Safety precautions
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1.3.4 Disposal
The inverter contains heavy metals. Dispose of a scrap inverter as
industrial waste.
When the life cycle ends, the inverter should enter the recycling
system. Dispose of it separately at an appropriate collection point
instead of placing it in the normal waste stream.

SPC Series Solar Pump Inverter Product overview
-5-
2 Product overview
2.1 Unpacking inspection
Check the following after receiving the product.
1. Whether the packing box is damaged or dampened.
2. Whether the model identifier on the exterior surface of the packing box is consistent
with the purchased model.
3. Whether the interior surface of the packing box is abnormal, for example, in wet
condition, or whether the enclosure of the inverter is damaged or cracked.
4. Whether the inverter nameplate is consistent with the model identifier on the exterior
surface of the packing box.
5. Whether the accessories (including the manual and keypad) inside the packing box
are complete.
If any problems are found, contact the local INVT dealer or office.
2.2 Product nameplate
Shenzhen INVT Electric Co., Ltd.
Model: SPC2K2TR26-H IP65
Power(Output): 2.2kW
Input: DC 120V-450V
Output: AC 3PH 0-230V 10A 0Hz-400Hz
S/N: Made in China
Note: The preceding shows a standard product nameplate example. The nameplate has
markings such as "CE", "TUV", and "IP65" depending on the actual certification result.
2.3 Model designation code
A model designation code contains product information. You can find the model
designation code on the inverter nameplate and simplified nameplate.
SPC 2K2 TR 2 6 - H
① ② ④③ ⑤ ⑥

SPC Series Solar Pump Inverter Product overview
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Field
Symbol
Description
Content
SPC
①
Product series
abbreviation
Abbreviation of solar pump controller
2K2
②
Rated power
The rated power is 2.2kW.
TR
③
Technical type
TR: 3PH
2
④
Output voltage class
2: 3PH 220V
4: 3PH 380V
6
⑤
Ingress protection (IP)
rating
0: IP00
6: IP65
H
⑥
Configuration frame
IP65 model type.
H: High performance
S: Standard
2.4 Product specifications
Model
SPC2K2TR20
SPC2K2TR26-S
SPC2K2TR26-H
SPC004TR40
SPC004TR46-S
SPC004TR46-H
SPC7K5TR40
SPC7K5TR46-S
SPC7K5TR46-H
Output power
(kW)
2.2
4
7.5
DC input
Max. DC input
voltage (V)
450
800
800
Start voltage (V)
120
250
250
Min. working
voltage (V)
70
200
200
Recommended
DC input voltage
range (V)
200–400
300–750
300–750
Recommended
MPP voltage (V)
330
580
580
AC output
Output voltage
(V)
0–230
0–400
0–400
Output
frequency (Hz)
0–400
0–400
0–400
Control performance
Control mode
V/F (SVPWM), SVC
Motor type
Asynchronous motor (AM) and synchronous motor (SM)

SPC Series Solar Pump Inverter Product overview
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Overload
capacity
Able to run at 120% of the rated current for 1 minute and 150% of the
rated current for 10 seconds
Other
Ingress
protection (IP)
rating
IP65
Cooling method
Natural cooling
Human-machine
interface (HMI)
External LED keypad
2.5 Product ratings
Model
Output
power
Rated
input
current
(A)
Rated
output
current
(A)
Packing
size W*H*D
(mm)
Weight
(kW)
(HP)
Net
weight
Gross
weight
kg
lbs
kg
lbs
3PH 220V
SPC2K2TR20
2.2
3
9
10
/
0.5
1.1
/
SPC2K2TR26-S
2.2
3
9
10
302*380*190
2.5
5.5
3
6.6
SPC2K2TR26-H
2.2
3
9
10
2.5
5.5
3
6.6
3PH 380V
SPC004TR40
4.0
5
9
9.5
/
0.6
1.3
/
SPC7K5TR40
7.5
10
18
17
/
0.8
1.8
/
SPC004TR46-S
4.0
5
9
9.5
302*380*190
2.5
5.5
3
6.6
SPC004TR46-H
4.0
5
9
9.5
2.5
5.5
3
6.6
SPC7K5TR46-S
7.5
10
18
17
340*400*260
3.6
7.9
4.4
9.7
SPC7K5TR46-H
7.5
10
18
17
3.6
7.9
4.4
9.7

SPC Series Solar Pump Inverter Installation guidelines
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3 Installation guidelines
This chapter describes the mechanical installation and electrical installation of the
inverter.
Only trained and qualified professionals are allowed to carry out the
operations mentioned in this chapter. Please carry out operations
according to instructions presented in "Safety precautions". Ignoring
these safety precautions may lead to physical injury or death, or device
damage.
Ensure the inverter power has been disconnected before installation. If
the inverter has been powered on, disconnect the inverter from the
power source, and wait for at least the time designated on the inverter.
The inverter installation must be designed and done according to
applicable local laws and regulations. INVT does not assume any
liability whatsoever for any inverter installation which breaches local
laws or regulations. If recommendations given by INVT are not
followed, the inverter may experience problems that the warranty does
not cover.
3.1 Mechanical installation environment
3.1.1 Installation environment
The installation environment is essential for the inverter to run at the best performance for
a long time.
Environment
Condition
Installation
site
Indoor/Outdoor
Ambient
temperature
-25°C–60°C, and air temperature change shall be less than
0.5°C/minute.
When the ambient temperature exceeds 45°C, the inverter must be
derated by 1% for every increase of 1°C.
It is not recommended to use the inverter when the ambient
temperature exceeds 60°C.
To improve reliability, do not use the inverter in the places where the
temperature changes rapidly.
When the inverter is used in a closed space, such as control cabinet,
use a cooling fan or air conditioner for cooling, preventing the
internal temperature from exceeding the temperature required.
When the temperature is too low, if you want to use the inverter that

SPC Series Solar Pump Inverter Installation guidelines
-9-
Environment
Condition
has been idled for a long time, install an external heating device
before the use to eliminate the freeze inside the inverter. Otherwise,
the inverter may be damaged.
Relative
humidity (RH)
Less than 95%
Storage
temperature
-40°C–70°C, with the air temperature change rate less than 1°C/minute.
Running
environment
Install the inverter in a place:
Away from electromagnetic radiation sources;
Away from oil mist, corrosive gases, and combustible gases
Without the chance for foreign objects such as metal powder, dust,
oil and water to fall into the inverter (do not install the inverter onto
combustible objects such as wood)
Without radioactive substances and combustible objects;
Without hazard gases and liquids;
With low salt content
Without direct sunlight
Ingress
protection
(IP) rating
IP65
Altitude
When the altitude is higher than 2000m but lower than 3000m,
derate the inverter by 1% for every increase of 100m.
When the altitude is higher than 3000m but lower than 5000m,
consult us for technical consulting. It is not recommended to use the
inverter when the altitude exceeds 5000m.
Installation
direction
Install the inverter vertically to ensure good heat dissipation performance.
Note:
The inverter needs to be installed at a clean and ventilated environment according to
the housing IP rating.
The cooling air must be clean enough and free from corrosive gases and conductive
dust.

SPC Series Solar Pump Inverter Installation guidelines
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3.1.2 Installation direction
The inverter can be installed on the wall or column or in a cabinet.
The inverter must be installed vertically. Check the installation position according to
following requirements. For details about the outline dimensions, see Appendix C
“Dimension drawings”.
3.1.3 Installation method
The inverter supports column mounting.
Figure 3-1 Column mounting
1. Mark the installation hole positions. For details about the installation hole positions,
see Appendix C “Dimension drawings”.
2. Mount the screws or bolts onto the designated positions.
3. Lean the inverter against the wall or column.
4. Tighten the fastening screws on the wall or column.

SPC Series Solar Pump Inverter Installation guidelines
-11-
3.2 Standard wiring
3.2.1 Main circuit terminals
The inverter standard wiring is shown as follows.
SPC controller
SPC controller
Q1
PV input
Switch
Common
terminal
S2 COM
S1 COM
RMS
(IP00)
RMS
(IP00)
24V COM A B
24V COM 485+ 485-
Water level switch
Water
pump
Water
pump
U V W
Well
Cabinet
(IP65)
Antenna
+-
Use a convergence box special for a solar inverter when paralleling
modules.
It is recommended to select an optional output reactor when the water
pump is more than 50m away from the inverter. For details about output
reactor model selection, see section A.3 “Reactor”.
By default, the inverter runs automatically after being powered on. If you
need to set parameters, see chapter 5 “Commissioning guidelines”.

SPC Series Solar Pump Inverter Installation guidelines
-12-
Terminal
Name
Description
PV+, PV-
PV DC input
PV module input terminals.
U, V, W
Inverter output
3PH AC output terminals, which connect to the water
pump motor in most cases.
Safety protection
grounding
Grounding terminal for safe protection; each machine
must be properly grounded.
3.2.2 Control circuit terminals
Category
Terminal
Name
Description
Power supply
24V
24V power supply
Used to externally provide
24V±10% power supply. Max.
output current: 200mA
Generally used as the the
working power supply of digital
input/output or the external
sensor power supply
COM
Common terminal
S terminal
control power
supply
PW
S terminal switchover
When PW and 24V are short
circuited, S terminals use the
PNP connection method.
When PW and COM are short
circuited, S terminals use the
NPN connection method.
Digital input
S1
Start/stop control
Terminal specifications:
1. Internal impedance: 3.3kΩ
2. 12–24V voltage input is
acceptable
3. Max. input frequency: 1kHz
Communication
RS485+
RS485-
RS485 communication
RS485 communication terminals,
using the Modbus protocol
Relay output
ROA
NO contact of relay 1
Contact capacity: 3A/AC250V,
1A/DC30V
ROB
NC contact of relay 1
ROC
Common terminal of
relay 1

SPC Series Solar Pump Inverter Keypad operation guidelines
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4 Keypad operation guidelines
4.1 Keypad introduction
The keypad is used to control the inverter, read inverter status, and set parameters. Use
a standard RJ45 crystal-head network cable as the extension cable.
Figure 4-1 External keypad
No.
Name
Description
1
Status
indicator
RUN/TUNE
Inverter running status indicator.
Off: The inverter is stopped.
Blinking: The inverter is autotuning parameters.
On: The inverter is running.
FWD/REV
Forward or reverse running indicator.
Off: The inverter is running forward.
On: The inverter is running reversely.
LOCAL/REMOT
Indicates whether the inverter is controlled
through the keypad, terminals, or
communication.
Off: The inverter is controlled through the
keypad.
Blinking: The inverter is controlled through
terminals.
On: The inverter is controlled through remote
communication.
TRIP
Fault indicator
Off: in normal state

SPC Series Solar Pump Inverter Keypad operation guidelines
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No.
Name
Description
Blinking: in pre-alarm state
On: in fault state
2
Unit
indicator
Unit displayed currently
Hz
Frequency unit
RPM
Rotation speed unit
A
Current unit
%
Percentage
V
Voltage unit
3
Digital
display
zone
Five-digit LED displays various monitoring data and alarm codes such as
the frequency setting and output frequency.
Display
Means
Display
Means
Display
Means
Display
Means
0
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
A
A
B
B
c
C
D
D
E
E
F
F
H
H
i
I
L
L
N
N
n
n
o
o
P
P
r
r
5
S
t
t
U
U
V
v
.
.
-
-
4
Keys
PRG
ESC
Programming
key
Press it to enter or exit level-1 menus or delete a
parameter.
DATA
ENT
Confirmation
key
Press it to enter menus in cascading mode or
confirm the setting of a parameter.
Up key
Press it to increase data or move upward.
Down key
Press it to decrease data or move downward.
SHIFT
Right-shifting
key
Press it to select display parameters rightward in
the interface for the inverter in stopped or
running state or to select digits to change during
parameter setting.
RUN
Run key
Press it to run the inverter when using the
keypad for control.
STOP
RST
Stop/
Reset key
Press it to stop the inverter that is running. The
function of this key is restricted by P07.04. In

SPC Series Solar Pump Inverter Keypad operation guidelines
-15-
No.
Name
Description
fault alarm state, this key can be used for reset in
any control modes.
QUICK
JOG
Multifunction
shortcut key
The function of this key is determined by P07.02.
4.2 Keypad display
The inverter keypad displays information such as the stopped-state parameters,
running-state parameters, and fault status, and allows you to modify function codes.
4.2.1 Displaying stopped-state parameters
When the inverter is in stopped state, the keypad displays stopped-state parameters, as
shown in Figure 4-2.
When the inverter is in stopped state, the keypad displays 4 stopped-state parameters,
including set frequency, bus voltage, input terminal status, and output terminal status.
You can press >>/SHIFT to shift parameters.
4.2.2 Displaying running-state parameters
After receiving a valid running command, the inverter enters the running state, and the
keypad displays running-state parameters, with the RUN/TUNE indicator on. The on/off
state of the FWD/REV indicator is determined by the actual running direction, as shown
in Figure 4-2.
In the running state, there are 6 parameters that can be displayed. There are: running
frequency, set frequency, bus voltage, output voltage, output current, and rotational
speed. You can press the >>/SHIFT key to shift parameters.
4.2.3 Displaying fault information
After detecting a fault signal, the inverter enters the fault alarm state immediately, the
fault code blinks on the keypad, and the TRIP indicator is on. You can perform fault reset
by using the STOP/RST key, control terminals, or communication commands.
If the fault persists, the fault code is continuously displayed.
4.2.4 Editing function codes
You can press the PRG/ESC key to enter the editing mode in stopped, running, or fault
alarm state (if a user password is used, see the description of P07.00). The editing mode
contains two levels of menus in the following sequence: Function code group or function
code number → Function code setting. You can press the DATA/ENT key to enter the
function parameter display interface. In the function parameter display interface, you can
press the DATA/ENT key to save parameter settings or press the PRG/ESC key to exit
the parameter display interface.

SPC Series Solar Pump Inverter Keypad operation guidelines
-16-
RUN/TUNE FWD/REV LOCAL/REMOT
Hz
TRIP
A
V
RPM
%
RUN/TUNE FWD/REV LOCAL/REMOT TRIP
Hz
A
V
RUN/TUNE FWD/REV LOCAL/REMOT TRIP
Hz
A
V
RPM
%
RPM
%
Figure 4-2 Status display
4.3 Operation procedure
You can operate the inverter by using the keypad. For details about function code
descriptions, see the function code list.
4.3.1 Modifying function codes
The inverter provides three levels of menus, including:
1. Function code group number (level-1 menu)
2. Function code number (level-2 menu)
3. Function code setting (level-3 menu)
Note: When performing operations on the level-3 menu, you can press the PRG/ESC or
DATA/ENT key to return to the level-2 menu. If you press the DATA/ENT key, the set
value of the parameter is saved to the control board first, and then the level-2 menu is
returned, displaying the next function code. If you press the PRG/ESC key, the level-2
menu is returned directly, without saving the set value of the parameter, and the current
function code is displayed.
If you enter the level-3 menu but the parameter does not have a digit blinking, the
parameter cannot be modified due to either of the following reasons:
• It is read only. Read-only parameters include actual detection parameters and running
record parameters.
• It cannot be modified in running state and can be modified only in stopped state.
Example: Change the value of P00.01 from 0 to 1.
The ones place is
blinking.
The ones place is
blinking.
All digits are
blinking. PRG
ESC
PRG
ESC
PRG
ESC
PRG
ESC
DATA
ENT
DATA
ENT
DATA
ENT
The ones place is
blinking.
Note: When setting the value, you can press and + to modify the value.
»
SHIFT
Figure 4-3 Modifying a parameter