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Veichi SI21 Manual

Veichi SI21 Manual

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Chapter 1 Safety Requirement and Cautions ........................................................................... 1
1.1 Safety Definition .......................................................................................................... 1
1.2 Safety Requirements and Cautions ............................................................................ 1
1.3 Cautions in Using......................................................................................................... 3
1.4 Technical Specification ................................................................................................ 4
1.5 Cautions in Disposal .................................................................................................... 4
Chapter 2 Installation and Wiring ............................................................................................ 6
2.1 Dimension of VFD ....................................................................................................... 6
2.2 Solar Pump Controller Wiring ................................................................................... 6
Chapter 3 Keyboard layout and functions specification ....................................................... 10
Chapter 4 Fault Diagnosis and Solution ................................................................................. 12
Chapter 5 Parameters List ....................................................................................................... 16
Chapter 6 Operation Guidance ............................................................................................... 36
6.1 Asynchronous Motor Pump Drive Operation Guidance ........................................ 36
6.2 Synchronous Motor Pump Drive Operation Guidance .......................................... 36
6.3 PV Water Pump Features ......................................................................................... 37
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SI21 Solar Pump VFD Manual

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  • Page 1: Table Of Contents

    SI21 Solar Pump VFD Manual Contents Chapter 1 Safety Requirement and Cautions ................1 1.1 Safety Definition ......................1 1.2 Safety Requirements and Cautions ................1 1.3 Cautions in Using......................3 1.4 Technical Specification ....................4 1.5 Cautions in Disposal ....................4 Chapter 2 Installation and Wiring ....................

  • Page 3: Chapter 1 Safety Requirement And Cautions

    SI21 Solar Pump VFD Manual Chapter 1 Safety Requirement and Cautions To ensure safety of your health, equipment and property, please read this chapter carefully before using the frequency VFD and act in compliance with the instructions when installing, debugging, running and overhauling the frequency VFD.
  • Page 4 SI21 Solar Pump VFD Manual 1. Wire is connected only when the main circuit is cut off, otherwise there is a danger of shock. 2. Wire is connected by professional person only. Otherwise there is a danger of shock. 3. Earth must be reliable. Otherwise there is a danger of shock.

  • Page 5: Cautions In Using

    SI21 Solar Pump VFD Manual danger of electric shock. 3. Do not operate or touch frequency VFD with wet hand. Otherwise there is danger of damage to frequency VFD and electric shock. Attention 1. Please set the parameter of frequency VFD cautiously; Otherwise it will damage equipment.

  • Page 6: Technical Specification

    Voc voltage frequenc power voltage input current power(kW) voltage V y(Hz) (kW) (kW) SI21-D1 series, 60VDC～400VDC input, 3 phase 110VAC～230VAC output 0.75 0.75 175～380 0～600 1.95 175～380 0～600 SI21-D3 series, 150VDC～450VDC input, 3 phase 220VAC～240VAC output 0.75 0.75 360～430 0～600...
  • Page 7 SI21 Solar Pump VFD Manual 3. Dispose method: please dispose as industrial waste.

  • Page 8: Chapter 2 Installation And Wiring

    SI21 Solar Pump VFD Manual Chapter 2 Installation and Wiring 2.1 Dimension of VFD ● Overall Dimension of VFD (Plastic) Installation Aperture 0.4kW-5.5kW Installation Dimension Drawing Side mounting Positive mounting Dimension (mm) dimensions dimensions (mm) (mm) Model SI21-D3-R04G-A SI21-D3-R75G-A SI21-D3-R75G-A-V...
  • Page 9 SI21 Solar Pump VFD Manual SI21-D5-5R5G-A Installation hole diameter 7.5kW-22kW Installation Dimension Drawing Positive Side mounting mounting Dimension (mm) dimensions dimensions Model (mm) (mm) SI21-D5-7R5G-A 一 一 一 12.5 SI21-D5-011G-A SI21-D5-015G-A 一 一 一 SI21-D5-018G-A 342.5 303.5 12.5 326.5 SI21-D5-022G-A...
  • Page 10 SI21 Solar Pump VFD Manual ● Standard Connection Diagram PV modules DC breaker Output Rector Solar pump VFD Shielded cable or armoured cable (the end close to VFD grounding) Note2 (The grounding resistance is less than 10 ohms) Note:Function description in brackets is...
  • Page 11 SI21 Solar Pump VFD Manual ● Function Specification of Switch Terminals Select Function Description location Enable AO output 0V～10V Disabling AO voltage output Enable AO output 0mA～20mA or 4mA～20mA Disabling AO current output RS485 communication access 120Ω termination resistor RS485 communication disconnects 120Ω termination resistor AI input 0mA～20mA or 4mA～20mA...

  • Page 12: Chapter 3 Keyboard Layout And Functions Specification

    SI21 Solar Pump VFD Manual Chapter 3 Keyboard layout and functions specification ● Keyboard operator appearance ● Key function Symbol Defination Function Description Enter the function menu interface during standby or running; press this button Menu to exit the modification when the parameter is modified; press the button (1 second) during standby or running to enter the status interface directly.
  • Page 13 SI21 Solar Pump VFD Manual ● Indicator Defination Name Status Defination Flash/Light on Indicates the frequency unit Light on Represents current unit Unit Light on Represents voltage unit indicator Light on Express unit of speed Flash/Light on Indicates the percentage unit...

  • Page 14: Chapter 4 Fault Diagnosis And Solution

    SI21 Solar Pump VFD Manual Chapter 4 Fault Diagnosis and Solution This chapter describes the VFD fault, alerts, and operation of the failure on the VFD, the display information on VFD and countermeasures. Keypad Fault Fault type Possibility reason Troubleshooting...
  • Page 15 SI21 Solar Pump VFD Manual ●Remove the added load. performed on the rotating ●Select an AC drive of higher motor. ●A sudden load is added power class. during acceleration. ●The AC drive model is of too small power class. ●The output circuit is ●Eliminate external faults.
  • Page 16 SI21 Solar Pump VFD Manual ●AC drive selected is too load ●Deceleration is too short ●Prolong acceleration time ●Short circuit of solar drive ●To check peripheral equipment System output or phase output short E.SC ●Ask to support abnormal circuit to ground ●Check the wiring layout, cable...
  • Page 17 SI21 Solar Pump VFD Manual ●Check 3-phase power supply wiring. ●Check 3-phase output voltage ●3-phase output power open Output phase E.oLF and current. loss phase ●Check wiring. Output earth ●Check wiring and E.Gnd ●Output earth terminal insulation. short circuit. ●Seek support from factory Current E.HA...

  • Page 18: Chapter 5 Parameters List

    SI21 Solar Pump VFD Manual Chapter 5 Parameters List This chapter just provides function parameter table. Specifications refer to SI21 technical manual. ● Environment setting Factory Parameter Function Range of settings and definition Notes default (address) Description (setting range) V/F SVC Set the VFD initialization method.
  • Page 19 SI21 Solar Pump VFD Manual 0: Keyboard digital given frequency 1: Keyboard analog potentiometer given 2: Current/voltage analog AI given 3: Reserved 4: Reserved 5: Terminal pulse PUL given 6: RS485 communication given 7: Terminal UP/DW control 8: PID control given...
  • Page 20 SI21 Solar Pump VFD Manual V/F SVC 4.0kHz F01.40(0x0128 Carrier Used to set the switching frequency of the (1.0kHz～ frequency VFD IGBT. 16.0kHz)
  • Page 21 SI21 Solar Pump VFD Manual ● Motor Parameters Parameter Function Factory default Range of settings and definition Notes (address) Description (setting range) V/F SVC F02.00(0x0200 Set the type of motor Motor type 0: Asynchronous motor (AM) (0～1) 1: Reserved F02.01(0x0201...
  • Page 22 SI21 Solar Pump VFD Manual ● Vector Control Parameter Function Factory default Range of settings and definition Notes (address) Description (setting range) ASR (speed F03.02(0x0302 10.00 loop)proportio Set the ASR (speed loop) proportional gain (0.01～100.00) nal gain 1 ASR (speed 0.100s...
  • Page 23 SI21 Solar Pump VFD Manual 1-9: Respectively, a power VF curve of 1.1-1.9; 10: Square VF curve; 11: Custom VF curve; F04.01(0x0401 0.0% Torque boost 0.0%: automatic torque boost (0.0%～30.0%) 0.1%～30.0%: manual torque boost ● I/O Terminals Parameter Function Factory default...
  • Page 24 SI21 Solar Pump VFD Manual 3: Reserved 4: Reserved V/F SVC 0: Given frequency 1: Output frequency 2: Output current 3: Input voltage 4: Output voltage 5: Mechanical speed 6: Given torque 7: Output torque F06.01(0x0601 8: PID given AO output...
  • Page 25 SI21 Solar Pump VFD Manual LED "00" digit: No direction of operation 0: Allow forward and reverse commands 1: Only forward commands are allowed 2: Only reverse command is allowed LED "000" digit: Frequency Control Command Direction 0: The frequency control direction is invalid.
  • Page 26 SI21 Solar Pump VFD Manual V/F SVC When the bus voltage is lower than the undervoltage suppression point, the F10.16(0x0A1 operating frequency is automatically undervoltage adjusted to suppress the bus voltage from (0～1) suppression decreasing, preventing the undervoltage fault. 0: Off...
  • Page 27 SI21 Solar Pump VFD Manual LED "00" digit: Input phase loss protection 0: Off 1: On, detected the input missing phase report warning A.ILF, continue to run 2: Turn on, detect input missing phase report fault E.ILF, free stop V/F SVC...
  • Page 28 SI21 Solar Pump VFD Manual Parameter Function Factory default Range of settings and definition Notes (address) Description (setting range) V/F SVC 0: Not locked 1: Keyboard function parameter F11.00(0x0B00 Key lock modification lock selection (0～3) 2: Function parameters and non-start stop...
  • Page 29 SI21 Solar Pump VFD Manual 0: Target frequency 1: Operating frequency LED "00" digit: Reserved 0: Invalid 1: Active power to remove stator resistance loss LED "000" digit: Power Display Dimensions 0: Power display percentage (%) 1: Power display kilowatt (kW) LED "0000"...
  • Page 30 SI21 Solar Pump VFD Manual Parameter Function Signal level of multi-function analog Content Notes code (address) Description output C00.00 10V corresponds to the maximum Given frequency (0x2100) frequency (60Hz) C00.01 10V corresponds to the maximum Output frequency (0x2101) frequency 10V corresponds to the rated current of the C00.02(0x2102)
  • Page 31 SI21 Solar Pump VFD Manual C01.06 Faulty module temperature V/F SVC (0x2206) C01.07 Faulty VFD status V/F SVC (0x2207) C01.08 Fault input terminal status V/F SVC (0x2208) C01.09 Fault output terminal status V/F SVC (0x2209) ● I/O Terminals Function Table...
  • Page 32 SI21 Solar Pump VFD Manual Fault trip alarm 2 (no PID feedback sensor Frequency (speed) is alarm during fault disconnection consistent 1 Any frequency (speed) is External downtime Meter length arrives self-recovery) consistent 1 VFD is under-voltage Timer time is up...
  • Page 33 SI21 Solar Pump VFD Manual ● Photovoltaic Pump Special Parameters Parameter Function Factory default Range of settings and definition Notes (address) Description (setting range) LED0 Mode selection 0:Variable frequency control mode 1:CVT mode for solar 2:MPPT mode for solar LED00 Operation selection...
  • Page 34 SI21 Solar Pump VFD Manual Frequency adjusting F21.10(0x550A) 0.001s～2.000s 0.001 filter time Go to sleep mode F21.11(0x550B) 0V～1000V voltage Wake up restore F21.12(0x550C) 0V～1000V 400V voltage Sleeping stop F21.13(0x550D) 0.0s～3000.0s 10.0s restore waiting time Low speed F21.14(0x550E) protection detect 0.00Hz～300.00Hz 10.00Hz...
  • Page 35 SI21 Solar Pump VFD Manual Minimum power protection auto F21.25(0x5519) 0.0s～3000.0s 10.0s restore working time 0:Auto reset;1:Reset by manual LED0:Low speed protection Fault alarm restore F21.26(0x551A) LED1:Dry run 0000 mode LED2:Over current protection LED3: Minimum power protection Water fulfilled F21.27(0x551B) 0.0s～3000.0s...
  • Page 36 SI21 Solar Pump VFD Manual 0:Invalid 1:Valid LED0:Constant torque frequency limit Photovoltaic pump selection F21.46(0x552E) 1100H function selection 1 LED1:Reserved LED2:Voltage rising update Voc voltage LED3: Fast frequency falling function Fast frequency F21.47(0x552F) 3.0%～15.0% 5.0% falling threshold Constant torque F21.48(0x5530) frequency limit 80.0%～150.0%...
  • Page 37 SI21 Solar Pump VFD Manual Power Limitation F21.62(0x553E) 0.0～100.0 Power Limitation F21.63(0x553F) 0.0～100.0 ● Photovoltaic Pump Special Monitor Parameters Setting range Function code Function name Default setting and definition C04.00(0x2500) Frequency reference 0.01Hz Read only C04.01(0x2501) Output frequency 0.01Hz Read only C04.02(0x2502)

  • Page 38: Chapter 6 Operation Guidance

    SI21 Solar Pump VFD Manual Chapter 6 Operation Guidance 6.1 Asynchronous Motor Pump Drive Operation Guidance 1) Wiring a. Confirmed the solar pump drive if matching with motor. b. Correctly connecting “+”“-” of solar panel to R, T wiring terminals. Otherwise it will cause VFD damage.

  • Page 39: Pv Water Pump Features

    SI21 Solar Pump VFD Manual 3) Common problems and solutions a. Q:Well-lit conditions, the pump is running, but the water is very small. A:Check if the pump motor direction is reversed. b. Q:Well-lit conditions, the drive is in standby mode 0.00Hz.
  • Page 40 SI21 Solar Pump VFD Manual F21.23(minimum power protection value), and after F21.24 (minimum power protection detection time) time, enters into standby protection state, while the keyboard warning “A.LPr”; after entering into the standby protection state and after F21.25 (minimum power automatic recovery)time, automatically resume to running state.

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