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Cotek SPT Series User Manual

Pure sine wave inverter
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SPT Series
EN
SPT1200/2000/3000
[Page 3]
PURE SINE WAVE INVERTER
User's Manual

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Summary of Contents for Cotek SPT Series

  • Page 1 SPT Series User’s Manual SPT1200/2000/3000 [Page 3] PURE SINE WAVE INVERTER...

  • Page 3: Table Of Contents

    1-2. Other Safety Notes FUNCTIONAL CHARACTERISTICS INTRODUCTION 5 2-1. System 2-2. Block Diagram 2-3. Electrical Specification 2-3-1. SPT Series Specification 2-3-2. Voltage & temperature performance 2-4. Mechanical Drawings INSTALLATION AND MAINTENANCE 3-1. AC Output Side (Front Panel) Introduction 3-1-1. Main Switch 3-1-2.
  • Page 4 INSTALLATION 4-1. Connection the DC cable 4-2. DC in wire AWG/INLINE fuse 4-3. Hardwire Installation 4-4. Connecting the loads 4-5. Switch ON Inverter 4-6. Protection Mechanism RS-485 COMMUNICATION AND OPERATION 5-1. RS-485 Port 5-2. RS-485 Port Operating 5-3. RS-485 Command 5-3-1.

  • Page 5: Safety Instructions

    1. Safety Instructions 1-1. General Safety Precautions Warning! Before using the Inverter, read the safety instructions.  Do not expose the inverter to rain, snow, spray or dust. To reduce the risk of fire hazard, do not cover or obstruct the ventilation openings and do not install the inverter in a zero-clearance compartment.

  • Page 6: Other Safety Notes

    1-2. Other Safety Notes  Upon receipt, examine the carton box for damage. If you have found any damage on the carton box please notify the company you purchased this unit from.  Do not operate near water or in excessive humidity. ...

  • Page 7: Functional Characteristics Introduction

    2. Functional Characteristics Introduction 2-1. System The unit is a highly reliable DC-AC inverter system, designed with advanced power electronic and microprocessor technology offering the following features:  Pure sine wave output waveform O/P voltage : THD ≤ 3 % ...

  • Page 8: Electrical Specification

    2-3. Electrical Specification 2-3-1. SPT Series Specification Item SPT-1200-112 SPT-1200-124 Electrical Rated Power 1200VA Rated input voltage 12.5 VDC 25.0 VDC DC input operation range 10.0~16.5±0.3VDC 20.0~33.0±0.3VDC Input over voltage protection > 16.5 ± 0.3 VDC > 33.0 ± 0.3 VDC Input over voltage warning >...
  • Page 9 AC Input current 40A continuous Transfer Transfer relay rating switch Transfer Time ≤ 20mS OCP(fuse), Reverse Polarity(mosfet), DC Input Protection OVP, UVP AC Output Protection Short-Circuit, Overload Protection 30A Breaker (Automatically Reset) AC Input Protection Enable by heatsink temperature > 95°C Temperature protection Remote Control Panel CR-22/ CR-8...
  • Page 10 Item SPT-2000-112 SPT-2000-124 Electrical Rated Power 2000VA Rated input voltage 12.5 VDC 25.0 VDC DC input operation range 10.0~16.5±0.3VDC 20.0~33.0±0.3VDC Input over voltage protection > 16.5 ± 0.3 VDC > 33.0 ± 0.3 VDC Input over voltage warning > 15.5 ± 0.3 VDC >...
  • Page 11 switch Transfer Time ≤ 20mS OCP(fuse), Reverse Polarity(mosfet), DC Input Protection OVP, UVP AC Output Protection Short-Circuit, Overload Protection 30A Breaker (Automatically Reset) AC Input Protection Temperature protection Enable by heatsink temperature > 95°C Remote Control Panel CR-22/ CR-8 (Optional) Signal and RJ45 x 2 Communication port...
  • Page 12 Item SPT-3000-112 SPT-3000-124 Electrical Rated Power 3000VA Rated input voltage 12.5 VDC 25.0 VDC DC input operation range 10.0~16.5±0.3VDC 20.0~33.0±0.3VDC Input over voltage protection > 16.5 ± 0.3 VDC > 33.0 ± 0.3 VDC Input over voltage warning > 15.5 ± 0.3 VDC >...
  • Page 13 switch Transfer Time ≤ 20mS OCP(fuse), Reverse Polarity(mosfet), DC Input Protection OVP, UVP AC Output Protection Short-Circuit, Overload Protection 30A Breaker (Automatically Reset) AC Input Protection Temperature protection Enable by heatsink temperature > 95°C Remote Control Panel CR-22/ CR-8 (Optional) Signal and RJ45 x 2 Communication port...

  • Page 14: Voltage & Temperature Performance

    2-3-2. Voltage & temperature performance Figure 1. SPT1200/2000/3000 Output power vs. input voltage Figure 1. SPT1200/2000/3000 Output power vs. Battery Voltage Figure 2. SPT1200/2000/3000 Output power vs. temperature...

  • Page 15: Mechanical Drawings

    2-4. Mechanical Drawings Figure 3. SPT series drawing Model SPT-1200 SPT-2000 SPT-3000 102mm (4.02”) 86mm (3.37”) 86mm (3.37’) 191mm (7.52”) 217mm (8.54”) 254.6mm (10.02”) 253mm (9.96”) 290mm (11.42”) 226.4mm (8.91”) 332mm (13.07’) 366mm (14.41”) 408mm (16.06”) 66mm (2.6”) 76mm (2.99”) 92.8mm (3.65”)

  • Page 16: Installation And Maintenance

    (refer to 3-1-4) AC-OUT Terminal AC-IN Terminal Ground Lug Panel Screw Table 5. SPT Series AC output side introduction Note：When the main switch is switched to REMO mode, only the CR-8, CR-22, or Black Terminal (ENB+ or ENB-) can be used .

  • Page 17: Black Terminal

    3-1-1. Main Switch Set the main switch to the “ON”. The inverter will turn on and the Unit Status LED on. Set the main switch to the “OFF” The inverter stops and the status LED off. Set to “REMOTE” if you wish to use remote/dry contact to power on/off 3-1-2.

  • Page 18: Unit Status Led & Grid Status Led Status

    Figure 5. Dry contact terminal definition Contact Maximum Number of Operating/Storage Rating Load Voltage operations Temperature 0.5 A 100,000 125 VAC Resistive 0.5 A 125 VAC Resistive -40℃~85℃ 100,000 30 VDC Resistive 30 VDC Resistive Table 7. Specifications of the Relay 3-1-3.

  • Page 19: Dip Switch Function

    Function Dip Switch Output Frequency Selection (refer to 3-1-4-1) Output voltage Selection (refer to 3-1-4-2) Power Saving Enable Selection (refer to 3-1-4-3) Power Saving Threshold Selection (refer to 3-1-4-4) Power Saving Time Out Selection (refer to 3-1-4-5) Table 9. DIP Switch Definition 3-1-4-1.

  • Page 20: Dc Input Side (Rear Panel) Introduction

    Remote Port (RJ45) (refer to 3-2-3) Remote Port (RJ45) (refer to 3-2-3) Batt- Input Terminal (Recommended torque value: 65-70 kgf.cm [6.4-6.9 N.m ]) Batt+ Input Terminal (Recommended torque value: 65-70 kgf.cm [6.4-6.9 N.m ]) Table15. SPT Series DC input side introduction...

  • Page 21: Signal Description

    3-2-1. Battery Power in Reverse Status LED Status Battery Power in LED Signal Status Reverse Status LED Solid Red DC Reverse Table16. DC Reverse Status LED Status 3-2-2. RS485 Terminator Switch (for Default OFF) For the last connected, please slide the switch to the ON position for activating the terminating resistor.

  • Page 22: Mounting Instruction

    3-3. Mounting Instruction 3-5-1. Wall Mount Step 1. Use the screws to mount the Drip shield and the product on the wall. Step 2. Please make sure the bulkhead size requires at least 3 inches clearance each side of the inverter. Figure 7 Wall mount ：...

  • Page 23: Installation

    4. Installation 4-1. Connection the DC cable Before making the DC input side connections, the main switch must be at “OFF”. Connect DC input terminals to 12V battery or other DC power source [ + ] is positive, [ - ] is negative. Reverse polarity connection can let DC Reverse Status LED on.

  • Page 24: Dc In Wire Awg/Inline Fuse

    DC in wire AWG/INLINE fuse Model Wire AWG lnline fuse SPT-1200-112/124 #1 / #6 ≥300A / ≥150A SPT-2000-112/124 #1/0 / #4 ≥500A / ≥250A SPT-3000-112/124 #4/0 / #1/0 ≥700A / ≥350A Table18. DC in wire AWG/INLINE fuse Warning! The recommended inline fuse should be installed as close to the battery positive terminal as possible failure to use a fuse on the “+”...

  • Page 25: Connecting The Loads

    Step 2. Pull the line through the snap bushing of the AC wiring compartment cover then follow below picture operation. Figure 11. AC wiring 4-4. Connecting the loads Calculate the total power consumption of the output load. Make sure that the total power consumption does not exceed the rated power.
  • Page 26 the non-critical: loads until the total power consumption is below the rated power. Appliance Typical Appliance Typical Wattage Wattage 13" Color TV 3/8 Power Drill 19" Color TV Icemaker Coffee Maker 1000 Lamp 3cu' Refrigerator Blender 20cu' Refrigerator Laptop Computer Compact Microwave Curling Iron Full Size Microwave...

  • Page 27: Switch On Inverter

    Figure 12. Nutural Grounding 4-5. Switch ON Inverter If you choose to control the Power On/Off via the dry contact or the remote unit, please make the power switch at “REMO” position. For the dry contact information, please refer to 3-1-4-1 4-6.

  • Page 28: Rs-485 Communication And Operation

    Table 22. RS-485 interface definition 5-2. RS-485 Port Operating The following steps show the connection among inverter and computer. Step 1 Connect the RS-485 port to the SPT series unit on the rear panel Step 2 Run the computer communication program Step 3 Set the transmission protocol Byte structure: START-BIP –...

  • Page 29: Rs-485 Command

    5-3.RS-485 Command 5-3-1. RS-485 command format This device uses the MODBUS communication protocol. Control commands are sent using hexadecimal characters, and the commands must include the following: Slave ID, Function code, Starting address, Quantity of Coils, and CRC checksum. The Slave ID of this device is 11H For Example: Correctly querying the BUVP value：...
  • Page 30 Disallowed read/write value Device read or write failure, Slave device failure possibly exceeding limit values 5-3-2. RS-485 function list The following table shows the useful command to operate SPT series. Function Command address and description Function:05 Address: 0x0000 Turn ON / OFF SPT series...
  • Page 31 Function Command address and description 0x0007 0x000A Bempty 0x0010 BUVW 0x0011 BOVW  Status definition refer to Table 24. Status definition Function:03 Address: Function Setting Menu address 0x0010 OVP setting 0x0011 OVP Recovery Query the Function Setup Value with 0x0012 UVP Setting the help of Function Codes 0x0013...
  • Page 32 SPT-1200/2000/3000 Status Definition address Definition Description BUVP Protection 0x0000 BUVP: Battery Under Voltage Protection BOVP Protection 0x0001 BOVP: Battery Over Voltage Protection OLPL Protection 0x0002 OLPL: Over Load Protection Low (101~120%) OLPM Protection 0x0003 OLPM: Over Load Protection Middle (121~200%) OLPH Protection 0x0004 OLPH: Over Load Protection High (>200%)
  • Page 33 5-3-2-4. Function:06, Address 0x0013 : UVP Recovery SETT <value> Default Description 00 00 – 01 2C 00 FA 12.50V = 10.00V + <0 – 300> <250> 2.50V *SET 00H 00H: 0.00V, SET 00H 96H:1.50V , SET 01H 2CH:3.00V, Table 28. UVP recovery 5-3-2-5.
  • Page 34 5-3-2-9. Function:06, Address 0x0018 : Saving time out SETT <value> Default 00 00 – 00 0A 00 00 <0 – 10> <0> * SET 00H 00H: OFF, SET 00H 03H : 3min. , SET 00H 06H : 6min., SET 00H 09H : 9min., SET 00H 0AH : 10min.

  • Page 35: Trouble Shooting

    6. Trouble Shooting Status LED Buzzer states Status Solution Over Voltage 1. Check DC input voltage. Slow Blink Orange Alarm 1.Check DC input voltage. Under Voltage 2.Check DC input connection and Fast Blink Orange Alarm wring cable. 1. Improve ventilation. Make sure one short Over Temperature ventilation openings in inverter are...

  • Page 36: Information

    COTEK local distributor. This warranty will be considered void if the unit has been misused, altered, or accidentally damaged. COTEK is not liable for anything that occurs as a result of the user’s fault.
  • Page 37 No.33, Sec. 2, Renhe Rd., Daxi Dist., Taoyuan City 33548, Taiwan Phone：+886-3-3891999 FAX：+886-3-3802333 http：// www.cotek.com.tw 2025.01...

This manual is also suitable for:

Spt1200Spt2000Spt3000

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