Sanhua SD2 Series User manual

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SD2 Series Drive
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WARNINGS
DISPOSAL
INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
SYMBOLS
Dangerous voltage
Caution, hot surface
Important: brings critical subjects regarding use of the product to the user’s attention
Note: when attention must be given to subjects of relevant importance, in particular regarding practical use of
the various product functionality.
WARNING: Separate as much as possible the probe and digital input signal cables from
the cables carrying inductive loads and power cables to avoid possible electromagnetic
disturbance. Never run power cables (including the electrical panel wiring) and signal
cables in the same conduits.
In reference to European Union directive 2002/96/EC issued on 27 January2003 and the
related national legislation, please note that:
WEEE cannot be disposed of as municipal waste and such waste must be collected and
disposed of separately;
The public or private waste collection systems defined by local legislation must be
used. In addition, the equipment can be returned to the distributor at the end of its
working life when buying new equipment;
The equipment may contain hazardous substances: the improper use or incorrect
disposal of such may have negative effects on human health and on the environment;
The symbol (crossed-out wheeled bin) shown on the product or on the packaging and
on the instruction sheet indicates that the equipment as been introduced onto the
market after 13 August 2005 and that it must be disposed of separately;
In the event of illegal disposal of electrical and electronic waste, the penalties are
specified by local waste disposal legislation.

Content
1. WARNINGS ........................................................................................................................1
1.1 General warnings........................................................................................................................................................ 1
1.2 Fundamental safety rules........................................................................................................................................... 1
2. INTRODUCTION .................................................................................................................3
2.1 Functions and main features...................................................................................................................................... 3
2.2 Models......................................................................................................................................................................... 4
2.2.1 Power supply of drive...................................................................................................................................... 5
2.2.2 Accessories....................................................................................................................................................... 5
3. INSTALLATION....................................................................................................................7
3.1 SD2011A2/ SD2015A2................................................................................................................................................. 7
3.1.1 Label information............................................................................................................................................. 7
3.1.2 Structure........................................................................................................................................................... 7
3.1.3 Dimensions....................................................................................................................................................... 8
3.1.4 Drilling and assembly....................................................................................................................................... 8
3.1.5 Cooling.............................................................................................................................................................. 9
3.1.6 Functional layout ............................................................................................................................................. 9
3.1.7 Electrical installation...................................................................................................................................... 10
3.2 SD2020A2.................................................................................................................................................................. 13
3.2.1 Label information........................................................................................................................................... 13
3.2.2 Structure......................................................................................................................................................... 13
3.2.3 Dimensions..................................................................................................................................................... 14
3.2.4 Drilling and assembly..................................................................................................................................... 14
3.2.5 Cooling............................................................................................................................................................ 15
3.2.6 Functional layout ........................................................................................................................................... 15
3.2.7 Electrical installation...................................................................................................................................... 16
3.3 SD2015B4/SD2020B4/SD2025B4/SD2032B4........................................................................................................... 19
3.3.1 Label information........................................................................................................................................... 19
3.3.2 Structure......................................................................................................................................................... 19
3.3.3 Dimensions..................................................................................................................................................... 20
3.3.4 Drilling and assembly..................................................................................................................................... 22
3.3.5 Cooling............................................................................................................................................................ 23
3.3.6 Functional layout(SD2015B4/SD2020B4/SD2025B4) ................................................................................... 23
3.3.7 Functional layout (SD2032B4) ....................................................................................................................... 24
3.3.8 Electrical connections.................................................................................................................................... 25
4. START-UP .........................................................................................................................29
4.1 Default communication parameters setting and update......................................................................................... 29
4.2 Compressor parameters selection............................................................................................................................ 29
4.3 Compressor start control.......................................................................................................................................... 30
4.4 Steps to start drive test for prototype...................................................................................................................... 31
5. FUNCTIONS......................................................................................................................32

5.1 Control....................................................................................................................................................................... 32
5.1.1 Compressor control........................................................................................................................................ 32
5.1.2 Inverter PWM frequency control................................................................................................................... 32
5.1.3 PFC control ..................................................................................................................................................... 32
5.1.4 Stator heater control...................................................................................................................................... 32
5.1.5 Status monitor ............................................................................................................................................... 32
5.1.6 User parameters initialization ....................................................................................................................... 32
5.1.7 Status/ history fault record............................................................................................................................ 32
5.2 Protections................................................................................................................................................................ 32
5.2.1 Frequency-skip frequency ............................................................................................................................. 32
5.2.2 Current limitation .......................................................................................................................................... 32
5.2.3 Compressor current protection (SW) ............................................................................................................ 32
5.2.4 AC current protection .................................................................................................................................... 32
5.2.5 IPM over-temperature protection................................................................................................................. 32
5.2.6 PFC over-temperature protection ................................................................................................................. 32
5.2.7 DLT protection................................................................................................................................................ 32
5.2.8 HPS protection ............................................................................................................................................... 32
5.2.9 Compressor current protection (HW)............................................................................................................ 32
5.2.10 AD-offset abnormal fault............................................................................................................................. 32
5.2.11 Compressor/VAC lost-phase protection...................................................................................................... 32
5.2.12 Compressor frequency abnormal fault ....................................................................................................... 32
5.2.13 VDC over/under-voltage protection............................................................................................................ 32
5.2.14 VAC over/under-voltage protection............................................................................................................ 32
5.2.15 Charge circuit fault....................................................................................................................................... 32
5.2.16 EEPROM data abnormal fault...................................................................................................................... 32
5.2.17 Communication fault ................................................................................................................................... 32
5.2.18 MCU self-check fault.................................................................................................................................... 32
5.2.19 IPM temperature sensor abnormal fault .................................................................................................... 32
5.2.20 PFC temperature sensor abnormal fault..................................................................................................... 32
5.3 Communication Protocol.......................................................................................................................................... 32
6. FAULT CODE TABLE...........................................................................................................33
6.1 Status indicator description...................................................................................................................................... 33
6.2 Fault code table ........................................................................................................................................................ 33
6.3 All major fault summary and possible cause checklist............................................................................................ 34
7. USB PROGRAMMING ......................................................................................................36
7.1 Introduction .............................................................................................................................................................. 36
7.2 Programming............................................................................................................................................................. 36
8. CERTIFICATION.................................................................................................................38
8.1 Safety standards ....................................................................................................................................................... 38
8.2 EMC standards .......................................................................................................................................................... 38
9. APPENDIX ........................................................................................................................40
9.1 Product parameter.................................................................................................................................................... 40

Sanhua SD2 series drive
1User Manual v3.5 –Sep-27.2022
1. WARNINGS
1.1 General warnings
Check whether the service voltage (rated voltage) matches with the power voltage before installing or using the
drives. If not, damages may be caused to the drive, and worse situations like fire disaster may take place as well.
Prior to the installation of drives, the capacity of power supply shall be figured out, making sure it is no less than the
working current required by those devices.
Installation and operation must be carried out after power off to safeguard personal safety and avoid electric shock.
After installation, check the devices to get rid of any fault and then power on for test run, during which, the device
performance and electric leakage shall be checked. Devices with body leakage shall be maintained in time and must
not be used in case of electric shock or personal injury.
1.2 Fundamental safety rules
Before performing any maintenance work:
Disconnect drive and external control circuits from the power supply, moving the main system switch to “off”. Wait
at least 5 minutes.
Always check, use a suitable multimeter, that there is no dangerous voltage across the terminals.
Always make sure the motor has stopped completely. Motors that are still freely rotating may produce dangerous
voltages at the drive terminals, even when this is disconnected from the power supply.
Check the temperature of the heat sink: coming in contact with the heat sink may cause burns.
When drive is connected to the mains, motor terminals (U, V, and W) are live, even if the motor is not running.
Do not measure insulation resistance or dielectric rigidity directly on drive, or with drive connected.
The control terminals are isolated from the mains voltage. Nonetheless, the relay outputs may have a dangerous
control voltage even when drive is not connected to the mains.
The level of safety provided by the enabling inputs on drive (excluding the “Safety Torque Off “input when used in
compliance with the standards) is not sufficient in critical applications without adopting further independent safety
measures. For all applications where malfunctions may cause serious harm to people and damage to things, the risks
must be assessed and additional safety measures adopted.
Product is required to be assembled by person with professional certificate according to certain electrical principle.
Any repair or replacement is required to done by manufacturer or its approved organizations.
Ensure correct earthing connections and cable selection as per defined by local legislation or codes. The earth cable
must be sufficient to carry the maximum supply fault current which normally will be limited by the fuses or magnetic
MCB. Suitably rated fuses or MCB should be fitted in the mains supply to the drive, according to any local legislation or
codes.
Observe all the general and local safety standards concerning installations of high voltage devices, as well as the
regulations for the correct use of the personal protective equipment.

Sanhua SD2 series drive
User Manual v3.5 –Sep-27.2022 2
Use this device only for the purposes specified by the manufacturer. Do not make any modifications or replace any
components unless recommended by the manufacturer, as these actions may cause fire, electric shock or other
damage.
Drives must be installed in a pollution degree of 1, 2 or 3 environment, mounted in a cabinet with IP54 or better.
When the product is IP00 (without cover), ensure that there is no plastic 50mm away from the parts or these plastics
meet the flame retardant requirements of IEC/EN 60335-1.

Sanhua SD2 series drive
3User Manual v3.5 –Sep-27.2022
2. INTRODUCTION
SD2 is a drive designed to control compressors with sensor-less brushless permanent magnet motors (BLDC) or
synchronous permanent magnet motors.
2.1 Functions and main features
Sensor-less SVPWM sine wave control, which can effectively reduce the high-order harmonic, motor vibration, torque
fluctuation and noise.
The weak magnetic control and MTPA control scheme can improve the compressor operating frequency range.
Double closed-loop feedback using for control strategy: Outer loop (speed) ensures the stable operating frequency;
Inner loop (current) ensures accurate torque output in real time.
High energy efficiency, miniaturization and high integration, which is convenient for production, testing and
maintenance.
A variety of protection functions (under voltage, over voltage, over current, over temperature, etc.) are implemented
through the DSP chip, which ensure the protection response quickly by various digital signal processing algorithms.
Power factor correction function can reduce the impact on the power grid and increase the voltage of the dc bus as
required to improve the operating frequency range, which could help drive to operate at ultra-wide input voltage
range (1-Phase Model only).
USB Programming Function (With external USB Programing tools).
Reinforced Isolation MODBUS communications.
Reinforced Isolation High pressure switch interface.
Reinforced Isolation discharge temperature sensor (DLT) interface.
Reinforced Isolation 0-10V Analog Input interface.
The distances are designed based on Pollution degree 3.
Applicable to the following refrigerant systems:
A1 refrigerant:
R410A/R448A/R744/R134a/R22/R417C/R404A/R407C…
A2L refrigerant:
R32/ R454A/R454B/R454C/R1234yf/R1234e…(Refrigerant with hot surface ignition temperature higher than
350℃)
A3 refrigerant:
R290/R600/R600a/R1270…(Refrigerant with hot surface ignition temperature higher than 350℃)
Note:
USB Programming function is realized by USB Off-line Programmer, disconnect drive and external control circuits
from the power supply, moving the main system switch to “off”.
This main function of this drive module is compressor drive and control, so that it does not include outdoor fan and
electronic expansion valve control, and not supply power to upper computer or other controllers. In principle, these
functions are performed by another master board or the upper controller provided from users.

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User Manual v3.5 –Sep-27.2022 4
2.2 Models
Considering the development of the new platform, combined with customer demand survey data and power device
specifications, the new platform series can be reasonably divided into the following power parts:
Drive Type
Label Name
Rated Voltage
MAX Input Current [A]
MAX Output Current [A]
1-PH Drive
SD2011A2
AC 220-240V 50/60Hz
13
11
SD2015A2
AC 220-240V 50/60Hz
20
14.5
SD2020A2
AC 220-240V 50/60Hz
25
20
3-PH Drive
SD2015B4
AC 380-415V 50/60Hz
8
15
SD2020B4
AC 380-415V 50/60Hz
11
20
SD2025B4
AC 380-415V 50/60Hz
18
25
SD2032B4
AC 380-415V 50/60Hz
25
32
Operating environment:-25 ~ 65℃&Relative humidity 0~95% (no frost & condensation), drive should not be
installed in direct sunlight, contaminants such as metal powder, dust, oil and water shall not enter the drive.
Storage environment: -40 ~ 85℃&Relative humidity 0~95% (no condensation)
Tab.2.1
Note:
MAX Output Current will be affected by environment temperature, heat dissipation and other factors during
operation. Therefore, it will have power derating under high temperatures, for reference:
Ambient temperature/℃
≤46
50
55
≥60
Horizontal & vertical heatsink inlet airflow temperature/℃
60
65
69
73
Flat plate reference temperature/℃
65
68
70
75
Load rate
100%
80%
50%
30%
Tab.2.2
For horizontal &vertical heatsink models (SD20****H******& SD20****V******)：
SD2011A2, SD2015A2, SD2020A2, SD2015B4, SD2020B4 and SD2025B4 are required to be used when the speed of
airflow is at least 1m/s which is measured at the outlet of heat sink in the direction of airflow. SD2032B4 is required
to be used when the speed of airflow is at least 2m/s.
For plat plate heatsink models (SD20****F******):
The drive shall be liquid cooled. Additional liquid tube and cover plate should be mounted to the SD2 drive. These
components shall be designed by user. Please make sure that the reference point temperature of flat plate need to
be lower than the reference value. Avoid condensation, the liquid temperature in the tube should not be too low.

Sanhua SD2 series drive
5User Manual v3.5 –Sep-27.2022
Recommended liquid tube layout：
The output mechanical frequency range depends on specific compressors.
2.2.1 Power supply of drive
The drive can be used in the following power supply environments:
1-PH
3-PH
Remark
Fully Load Operation Voltage
AC200V~240V
AC360V~440V
Nominal
Working Voltage range
AC176V~264V
AC320V~480V
Not marked on Nameplate
Allowable input range
≤AC 300V
AC240V~520V
No damage at 1sec transient
Power Supply Frequency: 50/60Hz ±5%
Tab.2.3
2.2.2 Accessories
Drive Type
Label Name
Accessories
1-PH Drive
SD2011A2
/
SD2015A2
/
SD2020A2
/
3-PH Drive
SD2015B4
Choke: 3*LE76-0825
SD2020B4
Choke: 3*LE105-1325
SD2025B4
Choke: 3*LE85.8-2503B
SD2032B4
Choke: 1*R3515
Tab.2.4

Sanhua SD2 series drive
User Manual v3.5 –Sep-27.2022 6
2.3 Naming rules
Fig.2.1
S
D
2
0
1
1
A
1
H
0
X
A
0
0
0
Output Current (Amps)
011: 11A-RMS (Single Phase)
015: 15A-RMS (Single/Three Phase)
020: 20A-RMS (Single/Three Phase)
025: 25A-RMS (Three Phase)
032: 32A-RMS (Three Phase)
Drive Generation
2: 2nd Generation after SD1
Product Description
D: Drive
Product Manufacturer
S:Sanhua Intelligent Controls Co.,LTD
Customer Code:
000: General Model Code
001: Customer 001
002: ...
Version Index:
A: First Edition of each Sample or MP
B: Second Edition of each Sample or MP
C: ...
Drive Version
X: Prototype,Sample or Production Pilot
S: Mass Production Single Package
M: Mass Production Multi Package
IP-CLASS / Housing
0: IP00 W/O Enclosure MP
2: IP20 Plastic Enclosure MP
5: IP54 (Under Development)
Cooling Version
A: Active Air Cooling FAN (Under Development)
H: Horizontal Heat Sink Cooled Finned MP
V: Vertical Heat Sink Cooled Finned MP
F: Flat Plate Fluid Cooled MP
Input Power Supply (VAC)
A1: 1P 94-135VAC 50Hz (Under Development)
A2: 1P 220-240VAC 50Hz/60HzMP
B2: 3P 200-260VAC 60Hz (Under Development)
B4: 3P 380-415VAC 50Hz/60HzMP
C4: 3P 420-528VAC 60Hz (Under Development)
C5: 3P 520-630VAC 50Hz (Under Development)

Sanhua SD2 series drive
7User Manual v3.5 –Sep-27.2022
3. INSTALLATION
3.1 SD2011A2/ SD2015A2
Single-Phase Series Variable Speed Drives applied for DC compressor. It is composed of EMI/EMC Filter, rectification, SMPS
circuit, PFC circuit, IPM module, microprocessor control, charging circuit, communication circuit, and chokes for harmonic.
3.1.1 Label information
SD2 is identified by a rating plate located on the right side of the device, which describes the code, serial number, and
production date and revision number.
Fig.3.1
3.1.2 Structure
Fig.3.2
Tab.3.1
Ref.
Description
A
Terminal block for control connections (SELV)
B
Operating status LED
C
PE
D
Terminal block for power connections(L,N)
E
Terminal block for output connections(U,V,W)
F
Fastening brackets
G
Heat sink(sizes vary from different models )
A
B
C
D
E
F
G

Sanhua SD2 series drive
User Manual v3.5 –Sep-27.2022 8
3.1.3 Dimensions
Fig.3.3
Dimensions (mm)
Model
Size
A(height of different Cooling version)
Weight(kg)
H-horizontal
V-vertical
F-flat plate
H-horizontal
V-vertical
F-flat plate
SD2011A2
255*185*(95.5+A)
39.5
39.5
8
2.38
2.38
2.24
SD2015A2
255*185*(95.5+A)
59
59
8
3.59
3.59
2.79
Tab.3.2
3.1.4 Drilling and assembly
Make a hole with dimensions of the dashed area, where the heat sink will be fitted, and holes for fastening the left and
right side brackets. Use M4 screws for drives installation.
Fig.3.4

Sanhua SD2 series drive
9User Manual v3.5 –Sep-27.2022
Installation of cold plate
Fig.3.5
Note: The size and position of installation screw holes can be customized by customer.
3.1.5 Cooling
Figure3.5 shows the minimum clearances to other components near the drive. To have a better cooling it is recommended
to mount the drive in the lower or middle part of the cabinet. Please insure that the drive is mounted in a way to have a
possibility of good natural convection.
Fig.3.6
3.1.6 Functional layout
Fig.3.7
≥100mm
≥150mm
≥100mm
≥100mm
1~
Rectifier
Power
Supply
1~
U
V
W
3~
Inverter IGBT
L
N
RFI
filter
PFC
1~

Sanhua SD2 series drive
User Manual v3.5 –Sep-27.2022 10
3.1.7 Electrical installation
3.1.7.1 General connection diagram
Fig.3.8
Single-phase AC
power supply

Sanhua SD2 series drive
11 User Manual v3.5 –Sep-27.2022
3.1.7.2 Description of the terminal
Fig.3.9
Ref.
Description
Earth
Single-phase power supply input
L,N
U,V,W
Motor output
Communication interface(CN21)
1
12Vdc
12Vdc Output,100mA Max
2
COM_GND
3
A
RS485/ModBus
4
B
5
5Vdc
High pressure switch input
6
HPS
7
5Vdc
Input of discharge temperature sensor
8
DLT
9
AI
0~10Vdc detecting input
10
COM_GND
LED
display
Fault(red)
drive alarm
run-status(yellow/green)
drive standby/ drive running
Tab.3.3
Important: If communication interface of high pressure switch input (No.5&6) is not used by customer, short circuit
must be implemented in between No.5&6, otherwise, drive will not work.
Note: The type of communication terminal is EC381V-10P, which is not included in accessories.

Sanhua SD2 series drive
User Manual v3.5 –Sep-27.2022 12
3.1.7.3 Electrical connection
Fig.3.10
Cable selection
Model
Max drive
Input
Current [A]
Min power cable
cross
section(mm2)
Max drive
output Current
[A]
Min motor cable
cross-section (mm2)
Max motor
cable length
(m)
SD2011A2
13
1.5
11
1.5
15
SD2015A2
20
2.5
14.5
2.5
15
Tab.3.4
O terminal recommendation
Fig.3.11
Tab.3.5
Important: the max tightening torque is:
• Power terminals: 1.5 Nm;
• Control terminals: 0.5 Nm.
Important: O terminal should be used together with heat shrink tube in case of bare wire.
Dimension (mm)
Φd2
B
F
E
ΦD
Φd1
T
5.3
8~10
≥8.3
4.8~6.8
Determined by cable selection
1.0~1.2

Sanhua SD2 series drive
13 User Manual v3.5 –Sep-27.2022
3.2 SD2020A2
Single-Phase Series Variable Speed Drive is applied for DC compressor. It is composed of EMI/EMC Filter, rectification,
SMPS circuit, PFC circuit, IPM module, microprocessor control, charging circuit, communication circuit, and chokes for
harmonics.
3.2.1 Label information
SD2 is identified by a rating plate located on the right side of the device, which describes the code, serial number,
production date and revision number.
Fig.3.12
3.2.2 Structure
Fig.3.13
Ref.
Description
A
Terminal block for control connections (SELV)
B
Operating status LED
C
PE
D
Terminal block for power connections(L,N)
E
Terminal block for output connections(U,V,W)
F
Fastening brackets
G
Heat sink(sizes vary from different models )
Tab.3.6
A
B
C
D
E
F
G

Sanhua SD2 series drive
User Manual v3.5 –Sep-27.2022 14
3.2.3 Dimensions
Fig.3.14
Dimensions (mm)
Model
Size
A(height of different Cooling version)
Weight(kg)
H-horizontal
V-vertical
F-flat plate
H-horizontal
V-vertical
F-flat plate
SD2020A2
265*205*(95.5+A)
59
59
8
3.95
3.95
2.95
Tab.3.7
3.2.4 Drilling and assembly
Make a hole with dimensions of the dashed area, where the heat sink will be fitted, and holes for fastening the left and
right side brackets. Use M4 screws for drives installation.
Fig.3.15

Sanhua SD2 series drive
15 User Manual v3.5 –Sep-27.2022
Installation of cold plate
Fig.3.16
Note: The size and position of installation screw holes can be customized by customer.
3.2.5 Cooling
Figure 3.13 shows the minimum clearances to other components near the drive. To have a better cooling it is
recommended to mount the drive in the lower or middle part of the cabinet. Please insure that the drive is mounted in a
way to have a possibility of good natural convection.
Fig.3.17
3.2.6 Functional layout
Fig.3.18
≥100mm
≥150mm
≥100mm
≥100mm
PFC
1~
Rectifier
Power
Supply
1~
U
V
W
Inverter IGBT
3~
L
N
RFI
filter
2
~

Sanhua SD2 series drive
User Manual v3.5 –Sep-27.2022 16
3.2.7 Electrical installation
3.2.7.1 General connection diagram
Fig.3.19
Single-phase AC
power supply