SD Series User’s Manual SD1500 / SD2500 / SD3500 PURE SINE WAVE INVERTER
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Table of Content 1. IMPORTANT SAFETY INFORMATION 1 1-1. General Safety Precautions 1 1-2. Precautions When Working with Batteries 1 1-3. Installation 2 2. FUNCTIONAL CHARACTERISTICS 3 2-1. General Information 3 2-2. Application 3 2-3. Electrical Performance 4 2-4. Mechanical Drawings 11 3. INTRODUCTION 12 3-1. Power ON / OFF / REMOTE (Main) switch 13 3-2. LED Indicator 13 3-3. DIP Switch (S1~S8) Assignment 14 3-4. DC Input - (please refer to DC wiring connections on P.20) 15 3-5.
. DC WIRING CONNECTIONS 20 4-1. DC Input Terminals 21 4-2. Hard-wire Installation 22 5. PARALLEL MODE 28 5-1. Prepare for Parallel Usage 28 5-2. Industry Applications 29 5-3. Wiring for Parallel Usage 31 5-4. AC Wiring Diagram 33 5-5. Remote command for the parallel connection 37 5-6. Remove Parallel Connection 37 6. RS-232 COMMAND 6-1. RS-232 command introduction 38 38 7. TROUBLESHOOTING 46 8.
1. Important Safety Information 1. Important Safety Information WARNING! Before using the inverter, read and save the safety instructions. 1-1. General Safety Precautions 1-1-1. Do not expose the Inverter to rain, snow, spray, bilge or dust. To reduce risk of hazard, do not cover or obstruct the ventilation openings. Do not install the inverter in a zero-clearance compartment. Overheating may take place. 1-1-2.
1-3. Installation The power inverter should be installed in a location that meets the following requirements： Dry – Do not allow water to drip or splash on the inverter. Cool – Ambient air temperature should be between -20℃ and 50℃, but he cooler the better. Safety – Do not install batteries in the compartment or other areas here flammable fumes existence such as fuel storage areas or engine compartments. Ventilated – Allow at least one feet of clearance around the Inverter for air flow.
2. Functional Characteristics 2. Functional Characteristics 2-1. General Information SD-series is new generation power inverter equipped with N+1 parallel power function , 3-phase capability, and AC transfer switch. SD series is suitable for RV, Marine and Emergency appliances.
2-3. Electrical Performance 2-3-1. SD1500 Specification MODEL SD1500-112 SD1500-124 SD1500-148 SD1500-212 SD1500-224 SD1500-248 Output Rating Power 1500W (de-rating after 40°C, refer to de-rating curve) Peak Power (3Sec.) 1800W Surge Power (<0.2Sec.) 2400W Pure Sine Wave Waveform Efficiency (Max.) Output Voltage (@rated VDC) 88% 89% 90% 100 / 110 / 115 / 120VAC ± 3% Output Frequency 50 / 60Hz ± 0.1% Total Harmonic Distortion (THD) < 3% @ under condition： greater than 1.
2. Functional Characteristics MODEL SD1500-112 SD1500-124 SD1500-148 SD1500-212 SD1500-224 SD1500-248 Working Temp. -20～+60°C; refer SD1500 power de-rating curve Storage Temp. -40～+70°C Relative Humidity Max.
2-3-2. SD2500 Specification MODEL SD2500-112 SD2500-124 SD2500-148 SD2500-212 SD2500-224 SD2500-248 Output Rating Power 2500W (de-rating after 40°C, refer to de-rating curve) Peak Power (3Sec.) 3000W Surge Power (<0.2Sec.) 4000W Pure Sine Wave Waveform Efficiency (Max.) Output Voltage 88% 89% 90% 100 / 110 / 115 / 120VAC ± 3% (@rated VDC) Output Frequency Total Harmonic Distortion (THD) 88% 88% 90% 200 / 220 / 230 / 240VAC ± 3% 50 / 60Hz ± 0.1% < 3% @ under condition： greater than 1.
2. Functional Characteristics MODEL SD2500-112 SD2500-124 SD2500-148 SD2500-212 SD2500-224 SD2500-248 Environment Working Temp. -20～+60°C; refer SD2500 power de-rating curve Storage Temp. -40～+70°C Relative Humidity Max.
2-3-3. SD3500 Specification MODEL SD3500-112 SD3500-124 SD3500-148 SD3500-212 SD3500-224 SD3500-248 Output Rating Power 3500W (de-rating after 35°C, refer to de-rating curve for 12V) (de-rating after 40°C, refer to de-rating curve for 24V and 48V) Peak Power (3Sec.) 4500W Surge Power (<0.2Sec.) 6000W Pure Sine Wave Waveform Efficiency (Max.) Output Voltage (@rated VDC) 90% 90% 91% 100 / 110 / 115 / 120VAC ± 3% Output Frequency 50 / 60Hz ± 0.
2. Functional Characteristics MODEL SD3500-112 SD3500-124 SD3500-148 SD3500-212 SD3500-224 SD3500-248 Environment Working Temp. -20～+60°C; refer SD3500 power de-rating curve Storage Temp. -40～+70°C Relative Humidity Max.
Figure 2. SD2500 de-rating curve Figure 3. SD3500 de-rating curve Transfer-Time Table ATS Mode / Transfer Switch Haphazard Normal Exacting Online Inverter to utility AC: 8~10ms.; Utility AC to inverter: 16~50ms. Inverter to utility AC: 8~10ms.; Utility AC to inverter: 16~25ms. Inverter to utility AC: 8~10ms.; Utility AC to inverter: 16~50ms. Inverter to utility AC: 8~10ms.; Utility AC to inverter: 16~25ms. * Only applicable on SD2500 / SD3500 10 *STS Frequency is synchronized: < 4ms.
2. Functional Characteristics 2-4. Mechanical Drawings Figure 4. SD series mechanical drawings Model A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) G (mm) H (mm) SD1500 351 160 93.1 268.6 8.5 11.5 128 283 SD2500 436 240.0 95.6 268.6 8.5 11.5 128 283 SD3500 496 240.0 125.6 268.6 8.5 11.5 128 283 Table 2.
3. Introduction 【Version 1】General Model Figure 5. SD general model front panel 【Version 2】UL Model Figure 6. SD UL model front panel Figure 7.
3.
3-3. DIP Switch (S1~S8) Assignment 1=ON/0=OFF Figure 8. DIP switch (S1~S8) PIN# PIN Assignment 1 AC output voltage setting 2 AC output voltage setting 3 AC output frequency setting 4 To set-up 3 Phase output or Energy-saving level 5 To set-up 3 Phase output or Energy-saving level 6 To set-up 3 Phase output or Energy-saving level 7 To set-up DIP Switch S4~S6 for power saving or 3 Phase output 8 To set-up function parameters adjustment via LCM port or DIP switch Table 5.
3. Introduction B. Power device leaving saving mode(re-start) Restart threshold = rate power x setting % x 2~3 In case the power over the restart threshold, the power device will re-start and provide the AC power.
3-5. DC Input + (please refer to DC wiring connections on P.20) 3-6.Chassis Ground：Connect the wire # 8 AWG to vehicle chassis WARNING! Operating the inverter without a proper ground connection may cause electrical safety hazard. 3-7. AC Output (Please refer to hard wiring installation on P.21) 3-8. By-pass AC input (please refer to hard wiring installation on P.21) 3-9. AC input circuit breaker The AC input circuit breaker protects the model from overload.
3. Introduction WARNING! LCM port is for remote control connection only. Please make sure the connection is correct. (CAN cable to CAN1 / CAN2 port , Remote cable to LCM port) If CAN cable is connected to LCM port, or vice versa, the inverter will be damaged. 3-13. LCM Port Connection for LCD remote control panel, you can set and display the SD-series operation status. Figure 10. LCM port Figure 11. LCM cable LCD Remote Control Panel SD Series PIN Num. Signal Description PIN Num.
3-14. Green terminal (Remote and Parallel select) Figure 12. Green terminal PIN # 1 2 3 4 5 PIN Assignment GND -ENB ENB Parallel Jump Parallel Jump Table 12. Green terminal PIN assignment 3-14-1. Parallel Jump Function (please refer to section 5 for further detailed info.) 1. Before installing the inverter, you need to ensure the main switch is in the OFF position. 2. Use 20 ~ 24 #AWG wire to connect the parallel jump terminal. 3-14-2. Remote Control Function 1.
3. Introduction Figure 15. RS-232 cable SD Series Computer PIN Num. Signal Description PIN Num. Signal Description 1 Not used 1 Not used 2 GND 5 GND 3 RXD 3 TXD 4 TXD 2 RXD 5 Not used Not used 6 Not used Not used Table 13. The connection between SD series and computer The connection between this SD-series and the computer is as follows： Figure 16. The connection between SD series and computer 3-16.
4. DC Wiring Connections Follow the instructions to connect the battery cables to the DC input terminals of the Inverter. The cable should be as short as possible (less than 6 feet / 1.8 meters ideally) so that it can handle the required current in accordance with the electrical codes or application regulations. Inappropriate length of cables will reduce the inverter performance such as poor surge capability, frequent low-input voltage warnings, and shut-down.
4. DC Wiring Connections Do not place anything between battery cable lug and terminal surface. Assemble exactly as shown. Figure 17. Battery cabling WARNING! During the first installation, a small spark is a normal phenomenon because the internal capacitors charging. Do not be concerned. 4-1. DC Input Terminals Connect DC input terminals to 12V / 24V / 48V battery or other power sources. [ + ] represents positive, [ - ] represents negative.
4-2. Hard-wire Installation 4-2-1. SD series provides the flexibility of hard-wire connection, and this function will make external control panel wiring easier. 【Version 1】General model Step 1. Remove the four screws of AC wiring compartment and pull it out with care. Figure 18. General model setting─Step 1 Step 2. Pull the line through the snap bushing of the AC wiring compartment cover then follow below picture operation. Figure 19.
4. DC Wiring Connections Note The only difference between 110V and 220V is within the AC Input breaker L or N and thus will not affect the wiring configuration. Note In case that user wants to install the earth-leakage circuit breaker, COTEK recommend time delay type. The major specification of the circuit breaker is as following： Earth-leakage current：100mA, 300mA, 500mA Time：0.45 second, 1 second, 2 seconds Recommend model：NV50-SN, Time delay type of Shihin Electric 【Version 2】UL model Step 1.
Figure 23. UL model setting─AC wiring Step 3. Use the screwdriver to fix the cover. Figure 24. UL model setting─Step 3 4-2-2. Connect AC output and AC input wiring to the SD series terminals. Please take the following information as your reference. Terminal AC OUTPUT AC INPUT Wire Color Line (L) Black Neutral (N) White Line (L) Brown Neutral (N) Blue Ground Green / Yellow or Bare copper Table 17.
4. DC Wiring Connections 4-2-3. Neutral Grounding Connection Setting The default setting is option A: NO ONNECTION BETWEEN NEUTRAL CONDUCTOR (N) OF THE AC OUTPUT AND SAFETY GROUND (PE/GND) CAUTION! It is advised that all the electrical installation should conform to the local electrical codes and should be carried out by a certified technician.
chassis of the inverter is connected to the earth ground, the “N” terminal of the AC output will not be grounded (bonded) to the earth ground. Under this condition, the “N” terminal of the AC output will not be a Neutral in the true sense.
4. DC Wiring Connections Note In case the load current over the outlet rated current, please use the hared wire terminal next to the outlets. Note Recommend GFCI connector： HUBBELL INC WIRING DEVICE DIV, Type GF20 and GFRST20. Rated 125V, 20A COOPER WIRING DEVICES, Type VGF20 and SGF20. Rated 125V, 20A LEVITON MFG CO INC, Type 7899-W and GFNT2. Rated 125V, 20A PASS & SEYMOUR INC, Type 2097. Rated 125V, 20A WARNING! When using full power, it is recommended to use the wiring terminal.
5. Parallel Mode 5-1. Prepare for Parallel Usage 1. Before setting, you need to ensure that the main switch is ”OFF”. 2. Before using the parallel function, you need to set the parallel jump of the green terminal the status of which must be “ON”, if the between in another SD is set to ”OFF” which is termination resistors. Figure 26. Parallel jump setting Example：If three SD inverters are paralleled, setup green terminal.
5. Parallel Mode Note Please select one unit to be Master unit. Use the cables to connect Master and Slave units. The CAN1 and CAN2 port connection please refer to Figure 25. Note The simple method to determine the terminal resistor：No need to set the terminal resistor when CAN1 and CAN2 port have wiring. Note SD series can be used for N+1 (N≦14) redundancy and the ability of enlarge the capacity (Users can install maximum 15 units of inverters together in parallel in order to provide the power expansion).
1Φ2W Type 1Φ3W 3Φ4W Waveform Battery Set up Warning Transfer Switch STS module：Single < 4ms; N+1 & 1P3W & 3P4W < 6ms Do not support N+1 operation, maximum of two SD inverters, THD < 4% Do not support N+1 operation, maximum of three SD inverters, THD < 4% DIP switch (S7) must be set to “1” DIP Switch Setting Wiring Diagram Refer to 5-2-1. / 5-2-2. Refer to 5-2-3. Refer to 5-2-4. Refer to Figure 32. / Figure 33. Refer to Figure 34. Refer to Figure 35. Table 20.
5. Parallel Mode 5-2-2. 1Φ2W Switch Table ─ Auto Master Auto Master S4 0 S5 0 S6 0 S7 0 S8 1 Table 22. 1Φ2W switch table ─ auto master 5-2-3. 1Φ3W Switch Table Master Slave 180° S4 0 0 S5 0 1 S6 0 1 S7 1 1 S8 1 1 Table 23. 1Φ3W switch table 5-2-4. 3Φ4W Switch Table L1 Master L2 -120° Slave L2 +120° Slave S4 0 1 1 S5 0 0 0 S6 0 0 1 S7 1 1 1 S8 1 1 1 Table 24. 3Φ4W switch table 5-3. Wiring for Parallel Usage 5-3-1. Connection method 1.
Figure 29. Connection Diagram_2 Figure 30.
5. Parallel Mode 5-4. AC Wiring Diagram Figure 31. SD series front panel introduction 【1Φ2W ─ Wiring Diagram】 Figure 32.
【1Φ2W Auto Master ─ Wiring Diagram】 Figure 33. 1Φ2W parallel AC wiring diagram ─ auto master Note Auto master can be operated under 1Φ2W mode. Under 1Φ2W auto master mode, please set up the inverter by Ethernet or Remote control CR-10. Note 1Φ2W system parallel Max. N+1=16 Note If you parallel N units, the first (unit 1) and the last unit (unit N) must set parallel jumper in ON position.
5. Parallel Mode 【1Φ3W ─ Wiring Diagram】 Figure 34.
【3Φ4W ─ Wiring Diagram】 Figure 35.
5. Parallel Mode 5-5. Remote command for the parallel connection There are two ways for parallel connection remote setting：1. RS-232, 2. CAN-Bus. The RS-232 communication protocol not support broadcast function. In case of the remote control use the RS-232 port, please follow the setting steps for the SD setting. RS-232 remote communication setting： 1. Select one SD to be the Master and follow the setting： Scenario S1 S2 S3 S4 S5 S6 S7 S8 Master X X X 0 0 0 1 X Table 26.
6. RS-232 Command 6-1. RS-232 command introduction 6-1-1. RS-232 command： Command format： This unit uses high-level language commands with a CR (0DH) and LF (0AH) as the end of the command. The system would interpret and execute the command only after these two characters are received. After the unit execute the command, it would send a response string to the computer.
6. RS-232 Command 6-1-3.
2. OVP Recovery ：When the DC input voltage is higher than the OVP setting, the SD-series shuts-down; once the input voltage falls below the set OVP value, the SD-series will automatically restart. Default = 15 VDC @ 12V Model, 30 VDC @ 24V Model, 60 VDC @ 48V Model Model Setting value range 12 V 13 VDC ~ 15 VDC 24 V 26 VDC ~ 30 VDC 48 V 52 VDC ~ 60 VDC Table 30. OVP Recovery 3. UVP Setting ：Setting Under Voltage Protection (UVP) and Shut-down on the inverter operation.
6. RS-232 Command Note The value of the voltage set for the “UV Alarm” should be equal to or higher than the value set for “UVP” or else the unit will shut-down without any audible warning. 6. O/P Voltage ：Setting the SD-series output voltage on the inverter operation. Default = 110 VAC @ 110 V Model, 230 VAC @ 230 V Model Model Setting value range 110 V 97 VAC ~ 123 VAC 230 V 194 VAC ~ 246 VAC Table 34. O/P Voltage 7.
Example2： When user setting value= Disable, the SD-series “Output frequency” is within the range of 47 Hz~63 Hz, the internal transfer relay will close. Default= 7Hz Model Setting value range 110 V 0 ~ 7 Hz 230 V 0 ~ 7 Hz Table 37. Sync Frequency 10. Overload Alarm ：Set the overload alarm. When the SD-series output power is higher than the set value, the SD-series will sound a “beep” to remind you that the unit is going to shut-down.
6. RS-232 Command 13. Saving Interval ：When SD-series inverter enters power saving mode, it will detect AC Load periodically. Default = 2.0 Seconds Setting range = 1.0S ~ 2.0S If the AC Load is 3 times higher than Saving Level, inverter will recover and output normally to AC Load. 14. Bypass Relay ：The setup is provided in one of the following two ways. On-line Mode or Off-line Mode ( Exacting, Normal, Haphazard). Default = Normal (Off line).
Transfer-Time Table Mode ATS Transfer Switch STS Frequency is synchronized: < 4ms.; Inverter to utility AC: 8~10ms.; Haphazard Utility AC to inverter: 16~50ms. Frequency is not synchronized: Inverter to utility AC: < 4ms.; Utility AC to inverter: 16~50ms. Inverter to utility AC: 8~10ms.; Normal < 4ms Utility AC to inverter: 16~25ms. Exacting Inverter to utility AC: 8~10ms.; Inverter to utility AC: < 4ms.; Utility AC to inverter: 16~50ms. Utility AC to inverter: 16~50ms.
6. RS-232 Command 18. Alert Setting ：When alert occurs, the internal dry contact relay will open/close. Default = Alert, SHDN Setting range = 0~3 Setting Menu Buzzer Setting SETT (RS-232) Alert (LCD) 0 Disable 1 SHDN 2 Alert 3 Alert , SHDN Table 45. Alert Setting 19. Language ：The SD-series have different languages available and are selectable.
7. Troubleshooting Problems and Symptoms A. Power status red light is blinking fast. B. Power status red light is Blinking slowly. Possible Cause Over input voltage. (OVP) Low input voltage. (UVP) Solutions Check input voltage. Reduce input voltage. Recharge battery. Check connections and cables. Improve ventilation. Make sure C. Power status red light is blinking Intermittently. Thermal shut-down. (OTP) ventilation, shafts of the inverter are not obstructed. Lower ambient temperature. Short circuit.
7. Troubleshooting／8. Warranty 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 2017.08.
