Cotek SR Series User Manual

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Page 1

SR Series

1KW Pure Sine Wave Power Inverter

User ’s Manual

Page 2

SR Series Inverter

Contents

Important Safety Instructions…………………………………………………………………….

3 1-1 General Safety Precaution…………………………………………………………………… 3 1-2 Other Safety Note………………………...…………………………………………………… 3

Introduction to Functional Characteristics…………………………………………………….

4 2-1 System...……………………………………………………………………………………….. 4 2-2 Block Diagram.…………………..……………………………………………………………. 5 2-3 Electrical Performance…..……………………………………………………………………. 6 2-4 Mechanical Drawings..………………………………………………………………………... 7

Installation and Maintenance….………………………………………………………………….

8 3-1 Rear Panel……..……………………………………………………………………………. 8

3-2 Deutsch Wichtige Sicherheitshinweise........................................................................ 13

3-3 Front Panel……..……………………………………………………………………………. 15 3-4 Maintenance…….………..……….…………………………………………………………. 16

Operation…………………………………………………………………………………………….

16 4-1 Connecting the Input Power………………………………………………………………….. 16

4-2 Connecting the Loads..……………………………………………………………………….. 16 4-3 Inverter Operation...………..…………………………………………………………………. 16

4-4 Protection Features……………………………………………………………………………. 17 5

Front LCD Panel Display and Setup…………………………………………………………….

17 5-1

LCD Panel Indications………….……………………………….……………………………. 17 5-2 Startup Sequence and Standby Status…..……….……………..………………………….. 19 5-3 Setup Menu Operation and Instructions……………………………..……………………... 20

RS232 Communication and Operation…..……………………………………………………..

25 6-1 Operation of RS-232 Serial Port..……. ………………………….…………………………. 25 6-2 Interface Command………………………………………………..………………………….. 26 6-3 Example of RS232 Operation……………………………………………………….……….. 26

7. Information…………………………………………………………………………………………..

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SR Series Inverter

7-1 Troubleshooting………………………………………………………………………………

7-2 Warranty……………………………………………………………………………………...

8. Appendices…………………………………………………………………………………………..

8-1 FCC (Class B) Declaration of Conformity…………………………………………………

8-2 EMC Declaration of Conformity……………….…………………………………………...

8-3 TUV(EN60950) Declaration of Conformity..…………….………………………………...

without the express permission of the owner.

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SR Series Inverter

1. Important Safety Instructions

1-1. General Safety Precautions

1-1-1. 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 zeroclearance compartment.

1-1-2. To avoid the risk of fire and electric shock, make sure that the

existing wiring is in good electrical condition; and that the wire size is not undersized. Do not operate the inverter with damaged or substandard wiring.

1-1-3. Depending on the use, the AC output of the inverter may require

user installed breaker or fusing. For telecom use, a GFCI has not been provided. The inverter incorporates standard AC short circuit protection.

1-1-4. The following precautions should be taken when working on the

inverter:

▌Remove watches, rings, or other metal objects. ▌Use tools with insulated handles. ▌Wear rubber gloves and boots.

1-2. Other Safety Notes

1-2-1. Upon receipt, examine the shipment box for damage. Notify the

carrier immediately, before opening, if damage is evident.

1-2-2. Do not operate near water or in excessive humidity.

1-2-3. Do not open or disassemble the inverter, warranty may be voided.

1-2-4. The DC side

connections should be firm and tight.

1-2-5. Grounding: Reliable grounding of rack-mounted equipment should

be maintained.

1-2-6. Do not drop a metal tool on the battery. The resulting spark or short-

circuit on the battery or on the other electrical part may cause an explosion.

WARNING!

SAVE THESE INSTRUCTIONS – This manual contains important instructions that should be followed during installation and maintenance of the inverter.

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SR Series Inverter

1-2-7. Install the inverter in a well-ventilated area. Do not block the front

air vents, or the rear air exhausts of the unit.

1-2-8. Wiring: Adequate input power must be supplied to the inverter for

proper use; correct wiring sizes must be ensured.

1-2-9. Mount the inverter such that the fan axis is horizontal.

1-2-10. Do not operate the inverter close to combustible gas or open fire.

1-2-11. Do not operate appliances that may feed power back into the

inverter.

1-2-12. Temperature: The inverter should be operated in an ambient

temperature range of 0℃ to 50 ℃ or else the output efficiency may be affected. Air flow to the inverter must not be restricted.

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:

▌

The inverter is equipped with a self diagnosis microprocessor that is able to identify and show all failure messages on the LED/LCD display, with associated visual/audio alarms.

▌

1U height x 19” width x 13.6” depth, 19” rack mountable.

▌

Pure sine wave output (THD < 2%) to operate higher-end electronic equipment.

▌

Built in 15A(120VAC) and 10A(250VAC) rated Bypass relay.

▌

Speeds up transfer time as a result of synchronized operation with the AC source at all times that allows the transfer to be interruption-free for sensitive equipment.

▌

Intelligent software for power management.

▌

AC Inlet and Dual AC outlets connection model option.

▌

Loading and temperature controlled cooling fan.

▌

Fan aging, failure, disconnection and blockage alarm.

▌

Selectable Bypass/Inverter modes.

▌

Local and remote management and control.

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SR Series Inverter

▌

RS-232 communication.

▌

Dry contact terminal.

▌

Efficiency >90%. (Full linear load at 220VAC Output)

▌

Advanced Protection Features:

Input over/under voltage protection. Internal over temperature protection. Input reverse polarity protection (Fuse). Output overload protection. Output short circuit protection AC input short circuit protection: Breaker (6 Amp or 12 Amp)

2-2. Block Diagram

AC GRID INPUT

INPUT

FILTER

AC OUTPUT

BYPASS RELAY

The inverter features IGBT technology which, minimizes weight and dimension, while enhancing output short circuit reliability and overload capacity.

AC output voltage is provided in one of the two following modes:

1). From DC to AC Inverter Mode: (On-line Mode)

2). From AC Input Bypass Mode: (Off-line Mode)

Either mode is front panel programmable. In the first option, Off-line mode, AC output power will be supplied through the AC bypass mode in its normal operation. Upon AC input failure, output power will be diverted through the DC to AC Inverter Mode. Once AC mains are restored, the unit will revert from the Inverter Mode to the Bypass Mode.

In the second option, On-line mode, AC output power will be provided directly by the inverter from the DC source. Should the DC source or inverter fail, the system will transfer its output power through the bypass mode. Once the DC power source is restored, the system will revert to the inverter mode.

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SR Series Inverter

2-3. Electrical Performance

Electrical Specification Model No.

Input

Characteristics

Item SR1000-124 SR1000-148 SR1000-224 SR1000-248

Voltage 24 VDC 48 VDC 24 VDC 48 VDC

Input Over-Voltage Protection 30~34 VDC 60 VDC MAX. 30~34 VDC 60 VDC MAX.

Input Under-Voltage Protection 18~22 VDC 36~44 VDC 18~22 VDC 36~44 VDC

Voltage Range 18~34 VDC 36~60 VDC 18~34 VDC 36~60 VDC

No Load Current 1.4 A 0.75 A 1.3 A 0.7 A

Output

Characteristics

W 0001 rewoP tuptuO suounitnoC

Maximum output Power (3Min) 1100 W

Surge Power 2000 W

Frequency 47 ~ 63 Hz +/- 0.05 % (User-selectable)

Output Voltage 97~123 VAC (User-selectable) 194~246 VAC (User-selectable)

Efficiency (Full Load) 87% 88% 90% 91%

Short-Circuit Protection Yes , Ipk

Output Waveform Pure Sine Wave (THD < 2%)

Signal and Control

noitagivan rof dapyek htiw lenaP DCL seniL 2 lenaP DCL

LED Indicator Red / Orange / Green LED

Dry Contact Terminal By a relay

Remote Control Terminal Controls the inverter ON / OFF operation

Protection

Input Protection Over / Under Voltage, Reverse Polarity (Internal Fuse)

AC Output Protection Short-Circuit, Overload

AC Input Protection 12 Amp Circuit Breaker 6 Amp Circuit Breaker

Temperature protection

Shutdown (Internal temperature≧

65℃)

Bypass Relay

Relay Specification 15Amp / 120VAC , 10 Amp / 250 VAC

Bypass relay selectable On Line/Off Line (Haphazard, Normal, Exacting) selectable

Switching Time

From AC bypass mode(Off-line Mode) : ≦

20mS

From DC to AC inverter mode(On-line Mode) : ≦8mS

Operating

Temperature

Full Load

0 ℃

~ 50 ℃

Storage

-30 ℃

~70 ℃

Fan Operation and

Indicator

tcatnoc yrd dna mrala rezzuB noitacidnI eruliaF

Switches On when

Internal Temperature ≧

55℃ or Load≧30%

Switches Off when

Internal Temperature ≦

45℃ and Load≦20%

Mechanical

Specification

Size (W X H X D) 19”x1.71”x13.6”(482.6mmX43.5mmX345mm)

Weight 5.8 Kgs (12.7 Lbs)

Safety and EMS

1-05906NE steeM 05906LU steeM sdradnatS ytefaS

EMC Standards FCC Class B

EN55022: 1998+A1: 2000+A2: 2003 Class B EN55024: 1997+A1: 2001+a2: 2003 EN61000-3-2: 2006 Class A EN61000-3-3: 1995+A1: 2001

Note: The specifications are subject to change without notice.

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SR Series Inverter

2-4. Mechanical Drawings

SR Series Inverter Ordering Information

Model

Number

Input

Voltage

Output Voltage

Nominal

Output Voltage

Range

Frequency

Range

SR1000-124 24 VDC 110 VAC 100~120 VAC 47~63 Hz SR1000-224 24 VDC 230 VAC 200~240 VAC 47~63 Hz SR1000-148 48 VDC 110VAC 100~120 VAC 47~63 Hz SR1000-248 48 VDC 230VAC 200~240 VAC 47~63 Hz

OFF

REMOTE

Max. 60V

INV. FAILURE

RS-232

AC INPUT

BREAKER

CHASSIS

GROUND

WARNING:

POS(+)NEG(-)

REVERSE POLARITY

WILL DAMAGE UNIT

AC INPUT

120Vac

10A 47-63Hz

OUTPUT

120Vac

10.3A max.

GND

ENB

COM.

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SR Series Inverter

3. Installation and Maintenance

3-1. Rear Panel

REAR PANEL VIEW

DC INPUT

NEGATIVE(-)

DC INPUT

POSITIVE(+)

ROMOTE CONTROL

TERMINAL

DRY CONTACT TERMINAL

STANDARD

RS-232

FG AC

OUTPUT SOCKET

INPUT

SOCKET

INPUT

BREAKER

3-1-1. AC Input Breaker:

The AC input circuit breaker protects the unit from overload. When an overload condition occurs, the circuit breaker trips and disconnects the AC grid power input. To reset it, push the circuit breaker button. The cause of tripping should be ascertained and corrected before the unit is reset .

3-1-2. AC wiring connections:

▌ AC socket:

▌Connect AC input wiring to the Inverter socket.

Please use the following information as your reference:

L N

AC INPUT

BREAKER

RL2

RL3

BYPASS RELAY

INVERTER

"L"

INVERTER

"N"

AC output receptacles

for 120VAC version

(NEMA5-15R)

AC Input Receptacle

(IEC 60320 C 14)

AC output sockets for

230VAC output version

(IEC 60320 C 13 receptacles)

Max. 60V

INV. FAILURE

RS-232

AC INPUT BREAKER

CHASSIS GROUND

WARNING:

POS(+)NEG(-)

REVERSE POLARITY WILL DAMAGE UNIT

AC INPUT

120Vac

10A 47-63Hz

OUTPUT

120Vac

10.3A max.

GND

ENB

COM.

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SR Series Inverter

3-1-3. AC output socket:

110VAC

NEMA

230VAC

I.E.C 60320 C13

Socket

re color

Wire length /

gauge

120 VAC 230 VAC

AC Output

Line (L)

NEMA I.E.C C13

Within 16 feet /

AWG# 14~16

26~32 feet /

AWG# 12~14

Neutral (N)

AC Input

Line (L)

I.E.C C14

Neutral (N)

Chassis Ground Green / Yellow or Bare copper

Note. Please double check and review all the connections to ensure that the wires are connected to the correct inlet.

3-1-4. Chassis Ground: Must be connected to earth ground prior to

making any other connections to the equipment. 3-1-5. RS-232: Serial port monitoring and control through computer interface. 3-1-6. Remote control and Dry contact terminal:

Normally Colsed

RELAY

COM.

ENB

GND

Remote Control Terminal Dry Contact Terminal

Common Normally Open

GOUND

ENABLE -

ENABLE +

▌Remote Control Terminal:

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SR Series Inverter

1). Before installing the inverter, ensure that the main switch “OFF”.

2). Before using the remote function, ensure that the main switch pressed toward “REMOTE”.

3). Ensure that the remote contacts are off.

4). Use 20 ~ 24 #AWG wire to connect the remote control terminals.

5). Remote control ON/OFF inverter setup status:

GND

OFF : INV. OFF

ON : INV. ON

ENB

BAT+ BAT-

POWER

GND

ENB

OFF : INV. OFF

ON : INV. ON

ENB

OFF : INV. OFF

ON : INV. ON

LOW : INV. OFF (TR OFF)

HI : INV. ON (TR ON)

GND

ENB

NOTE: At one time, only one remote function should used to control the inverter.

The maximum voltage value is 60VDC.

▌Dry Contact Terminals:

Dry contact terminals may be connected to a Form C relay for “FAULT”

indication. When “FAULT” occurs, the relay switches.

NOTE: Fault conditions include Input under/over voltage, Output Short Circuit,

Over Temperature, Over-load and, Fan Failure.

Specifications of the Relay

Maximum

Voltage

Load

Contact Rating Number of

operations

Operating/Storage

Temperature

N.O. N.C.

240 VAC Resistive 16 A 100,000

-30℃~70℃

240 VAC Resistive 8 A

30 VDC Resistive 16 A 30 VDC Resistive 8 A

▌Remote Control Terminal:

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SR Series Inverter

Dry Contact Terminal Relay

COM. Common contact

N.C. Normally closed contact N.O. Normally open contact

3-1-7. DC Input Connection:

Follow the instructions to connect the battery cables to the DC input terminals of the inverter. The cables should be as short as possible (less than 6 feet / 1.8 meters ideally) so that they can handle the required current in accordance with the Electrical Codes and Regulations. The size of the cable should be thick enough to limit the voltage drop to less than 2% when carrying the maximum input current to prevent frequent low-input voltage warnings, and shutdown. UVP (Under Voltage Protection) warning may result if there is excessive voltage drop across the DC cables between the batteries and the inverter. Increasing your DC cable size will help improve the situation.

Batteries are capable of providing very large currents in case of short circuit. In case there is a short circuit in the cable run between the batteries and the input terminals of the inverter, it will result in overheating / melting of the cables and consequent risk of fire and injury, To prevent possibility of this hazard, use Very Fast Acting DC Fuse in line with the positive cable. The fuse should be as close to the positive battery terminal as possible. Use Bussmann ANN series fuses ( will also require Fuse Block 4164) or equivalent.

The following sizes of cables and fuses

are recommended for up to 6 ft. distance between the batteries and the inverter. (Applies to both 120 VAC and 230 VAC versions):

Model No Wire AWG Inline Fuse

SR1000-124 / 224 # 4 80 A

SR1000-148 / 248 # 6 40 A

▌Connect DC input terminals to 24V / 48V battery or other DC power source.

[ + ] is positive, [ - ] is negative. Reverse polarity connection can blow the internal fuse and may damage the inverter permanently.

WARNING!

Make sure that all the DC connections are tight (torque to 9 – 10 ft-lbs, 11.7 – 13 Nm). Loose connections could result in overheating and can be a potential hazard.

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SR Series Inverter

M8 SCREW

PVC WIRE

(AWG#4 - #6)

POSITIVE+

RING

TERMINAL

PVC WIRE

(AWG#4 - #6)

RING

TERMINAL

POSITIVE+

Also, only use high quality copper wire and keep the cable length short which is a maximum of 3 - 6 feet.

POSITIVE+

INLINE FUSE

POSITIVE+

WARNING!

The recommended inline fuse should be installed as close to the battery positive terminal as possible Failure to use a fuse on the “+” cable running Between the inverter and battery may cause damage to the cable / inverter and will void warranty.

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SR Series Inverter

3-2. Wichtige Sicherheitshinweise

Modelle: SR1000-224, SR1000-248 Nennwerte:

DC Eingangs Spannung / Strom: 18.0 – 34.0 Vdc, 69 A.（für Modell SR1000-224） DC Eingangs Spannung / Strom: 36.0 – 60.0 Vdc, 35 A.（für Modell SR1000-248） AC Eingangs Spannung: 200 – 240 Vac, 50 Hz, 5 A.

Ausgangs Spannung: 194 – 246 Vac, 47 – 63 Hz, 5.16 A.

1. Bitte lesen Sie diese Hinweise sorgfältig durch.

2. Heben Sie diese Anleitung für den späteren Gebrauch auf.

3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine Flüssig- oder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung.

4. Das Gerät ist vor Feuchtigkeit zu schützen.

5. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen oder Fallen könnte Beschädigungen hervorrufen.

6. Beachten Sie beim Anschluss an das Stromnetz die Anschlusswerte.

7. Verlegen Sie die Netzanschlussleitung so, dass niemand darüber fallen kann. Es sollte auch nichts auf der Leitung abgestellt werden.

8. Alle Hinweise und Warnungen, die sich am Gerät befinden, sind zu beachten.

9. Öffnen Sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur von autorisiertem Servicepersonal geöffnet werden.

10. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer qualifizierten Servicestelle zu Überprüfen:

a. - Netzlabel oder Netzstecker sind beschädigt. b. - Flüssigkeit ist in das Gerät eingedrungen. c. - Das Gerät war Feuchtigkeit ausgesetzt. d. - Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert

oder Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen. e. - Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt. f. - Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.

11. Dieses Schaltnetzteil kann bis zu einer Außentemperatur von maximal 50°C betrieben werden.

12. Der Schalldruckpegel in der Operatorposition entsprechend

IEC 60704-1 1982 ist gleich oder weniger als 70dB(A)

13. Zum Netzanschluss dieses Gerätes ist eine geprüfte Leitung zu verwenden. Es ist eine Leitung vom Typ: H03VV-F, H05VV-F, 3G, 0.75mm

oder besser

einzusetzen.

14. Wechselstrom Eingangs Überstrom-Schutz: 6 Ampere Stromunterbrecher. Die folgenden Größen des Kabels für Erdleitung des CHASSIS:

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SR Series Inverter

Modell Nummer Leitungs-Diameter [mm]

SR1000-124 / 224 5.19

SR1000-148 /248 4.11

Den DC Eingang an eine 24V/48V Batterie oder am eine andere DC

Spannungsquelle anschließen. [+] ist positiv, [-] ist negativ. Umgekehrter

Anschluss kann zum durchbrennen der internen Sicherung fuhren und kann den

Inverter dauerhaft beschädigen.

ANWENDEN

Die empfohlene Interne Sicherung sollte so nah wie möglich zur Plus-Klemme der Batterie angebracht werden. Ohne eine Sicherung zwischen dem „+“ Anschluss der Batterie und dem Kabel, das zwischen den Inverter und die Batterie läuft, kann das Kabel oder der Inverter beschädigt werden. In diesem Fall wird die Garantie ungültig.

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SR Series Inverter

16. Vor Gebrauch muss dieses Gerät an einen zuverlässigen Schutzleiter angeschlossen werden.

17. Dieses Gerät ist vorgesehen für Installation in eine Betriebsstätte mit beschränktem Zutritt und der DC Eingangsanschluss muss an die Rückseite des Baugruppenträgers angebracht werden um zu verhindern das es durch qualifiziertes Service-Personal berührt wird.

3-3. Front Panel

FRONT PANEL VIEW

MAIN

SWITCH

FAN

VENTILATOR

3-3-1. Main Switch: These are the 3-stage rocker switches for turning on, turning off

and remote mode. 3-3-2. LED’s Indicators: See details in Section 5-1. 3-3-3. LCD Display Selection Buttons:

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SR Series Inverter

Data pertaining to the DC input voltage, AC output voltage, AC output frequency, AC output current, etc. and system status can be shown sequentially on the LCD display by pressing these buttons. Please refer to chapter 5 for more information.

3-3-4. FAN ventilation grille (1)~(3): The fans behind the ventilation grilles provides

cooling. DOT NOT obstruct these vents!

3-4. Maintenance

3-4-1. Make sure that the fan vents are not blocked.

3-4-2. Use a vacuum cleaner to remove any dust from the fan area.

3-4-3. When cleaning the case or front panel, use a soft, dry cloth, only. If the case

or front panel is very dirty, use a neutral, non-abrasive detergent. Do not use alcohol or ammonia based solutions.

3-4-4. Regular service, and relocation of the inverter, should be performed by a

qualified service technician.

3-4-5. Avoid spilling liquid on the inverter.

4. Operation:

4-1. Connecting the input power

Before making the DC input side connections, the main switch must

be “OFF”.

4-2. Connecting the loads

▌Calculate the total power consumption(W) of the output load. Make sure that

the total power consumption does not exceed the rated load.

▌Should the to

tal load exceed the rated capacity of the inverter, remove the

non-critical. loads until the rated total has been reached.

4-3. Inverter Operation

▌Set the power switch to the “ON” position. The buzzer will sound “beep beep”.

The inverter will carry out self-diagnosis and, the LED’s will also appear various colors. At the, same time the LCD will display ”SR-1000 INVERTER INITIALIATION..”.

Finally, the buzzer will sound another “beep” and the “INVERTER” and

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SR Series Inverter

status LED’s will turn “Green”, The LCD Display will display “Vi, Vo, FQ, Io“. THE, inverter will start operating normally.

▌Set the power switch to the “OFF” position. THE, inverter stops and all

the lights that are on will, go off.

4-4. Protections Features

Model

DC Input (VDC) Over Temperature Protection

Over Voltage Under

Voltage

Alarm

Under Voltage INTERIOR HEAT SINK

Shut-down Restart Shut-down Restart

Shutdown

Restart

Shutdown

Restart

24 V 30.1~34.1 28~32 19~23 18.1~22.1 23~27

65℃ 45℃ 105℃ 75℃

48 V 60.1 56~60 38~46 36.1~44.1 46~54

5. Front LCD Panel – Display & Setup

5-1. LCD Panel Indications

5-1-1. Set the Power Switch to the “ON” position. THE, inverter starts working

normally. The inverter will be operating in normal condition when either

of the following messages are displayed on the LCD screen:

FQ=60.0 Io =8.5

Vi =24.0 Vo=115

LED's

INDICATORS

LCD

DISPLAY

LCD DISPLAY

SELECTION BUTTONS

5-1-2. LED Indications:

▌AC GRID: Displays AC input status.

AC Input LED Status

AC input and DC-AC Inverter

Output are Synchronous

Green

AC input ON Orange

AC input OFF Off

Note. Synchronous means that the: grid AC input frequency and DC-AC

inverter output frequency or phase are the same (See details in

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SR Series Inverter

Section 5-3-3).

▌INVERTER: Displays DC-AC inverter status.

DC-AC Inverter LED Status

Power OK Green

Power Not Good Red

▌BYPASS: Displays Bypass relay status.

Bypass

LED Status AC Output (Load)

From DC-AC inverter

(On-line Mode)

Orange AC Input

Off DC-AC Inverter

From AC input bypass

(Off-line Mode)

Green AC Input

Off DC-AC Inverter

▌ALARM: Displays status of the Failure Alarm.

Alarm LED Status

Over/Under Alarm

/FAN Alarm

Orange

Set alarm in the inverter to

operate normally

Off

NOTE. For instructions on setting the alarm, see details in Section 5-3.

5-1-3. LCD Display Selection Buttons:

▌Function of Various Keys :

Function <Up>: You can use the “up” button to scroll through the menus.

or to select the value for set up under setting mode.

Function <Down>: You can use the “Down” button to scroll through the

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SR Series Inverter

menus or to select the value for set up under setting mode. .

Function <Page Up>: You can use the “Page Up” button to scroll through the

menus.

Function <Page Down>: You can use the “Page Down” button to scroll

through the menus.

Function <Enter Setup Menu>: Press the button longer than 2 seconds,

The inverter will change to “Setup Menu Mode” which appears on the LCD screen for the user to set functions.

Function <Enter>: Confirms a selection or value.

5-1-4. LCD Display: Displays inverter’s operational status.

5-2. Startup Sequence and Standby Status

5-2-1. Once turn on the inverter. The display shows “SR-1000 INVERTER

INITIALIATION..”, then checks the inverter.

Status flow is as follows:

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SR Series Inverter

Fan Failure!!

Alert:

Overload!!

Alert:

1Sec Exchange

Alert:

Undervoltage!!

Vi =XX.X Vo=XXX

FQ=XX.X Io =X.X

Vi =XX.X Vo=XXX

ALARM

Vi =XX.X

OLP Shutdown

Vi =XX.X

OTP Shutdown

OVP Shutdown

Vi =XX.X

UVP Shutdown

FAILURE

CHECK INVERTER

SR-1000 INVERTER

INITIALIATION ..

ONOFF

POWER SWITCH

LCD OFF

5-3. Setup Menu – Operation and Instructions

Entering Setup Menu:

Press

Button longer than 2 seconds. The inverter, enters the

Setup Menus consisting of three layers:

(1)Select Menu Heading: (2)Select Menu Item: (3)Setting Value:

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SR Series Inverter

Vi =XX.X Vo=XXX

FQ=XX.X Io =X.X

Main Menu:

Select

Menu:

User interface

Select Menu:

I/P Parameter

Select Menu:

O/P Parameter

Select Menu:

RST to default

Select Menu:

Select Item:

LCD Contrast

Select

Item:

Select Item:

LCD Auto-off

Select Item:

RS232 Baudrate

Select Item:

Buzzer Setting

Select Item:

Alert Setting

01234 6789101112131415

Function

Code:

OVP Setting

Select Item:

OVP Recovery

Select Item:

UVP Setting

Select Item:

UVP Recovery

Select Item:

UV Alarm

Select Item:

O/P Voltage

Select Item:

O/P Frequency

Select Item:

Sync Frequency

Select Item:

Bypass relay

Select Item:

Overload Alarm

Select Item:

50%

LCD Contrast:

Setting

Value:

LCD Auto-off:

120S

RS232 Baudrate:

4800

Buzzer Setting:

MSG , Alert , SHDN

Alert Setting:

Alert , SHDN

OVP Setting:

32.00V

30.00V

OVP Recovery:

20.00V

UVP Setting:

25.00V

UVP Recovery:

21.00V

UV Alarm:

O/P Voltage:

230V

O/P Frequency:

50.00Hz

Sync Frequency:

7.00Hz

Bypass relay:

On-line

Overload Alarm:

100%

5-3-1. User interface (Select Menu):

0). LCD Contrast: Sets LCD screen contrast.

Default=50%

Setting Range= 0%~100%

1). LCD Auto-off: Sets LCD auto off timer. Default=120 seconds. Setting Range= Disable~250 seconds.

2). RS232 Baud-rate: Sets standard RS-232 Baud-rate. Default=4800 Setting Range= 1200/2400/4800/9600

3). Buzzer Setting: Sets the internal buzzer sound ON/OFF.

When setting, the LCD screen display,

Buzzer “ON”, Buzzer “OFF”.

Default=MSG, Alert, SHDN

Setting Range= Disable / Shutdown / Alert

/ Alert, SHDN / Message / Message, SHDN / Message, Alert / MSG, Alert, SHDN

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SR Series Inverter

Menu Status Buzzer

Message Power ON or Push Keypad ON

Alert FAN Fail or UV Alarm or Overload Alarm ON

Shutdown OVP or UVP or OLP or OTP ON

Disable Any OFF

4). Alert Setup: When alert occurs, the internal Dry Contact Relay will open / close. (See details in Section 3-1-6)

Default= Alert, SHDN

Setting Range= Disable / Shutdown / Alert / Alert, SHDN

Menu Status Relay

Alert FAN Fail or UV Alarm or Overload Alarm ON

Shutdown OVP or UVP or OLP or OTP ON

Disable Any OFF

5-3-2. I/P Parameter (Select Menu):

6). OVP Setting: Sets the Over Voltage Protection (OVP) and shutdown. Default= 34 VDC for 24 V Model, 60 VDC for 48 V Model

Model Setting Value Range

24 V 30 VDC ~ 34 VDC 48 V 60 VDC MAX.

7). OVP Recovery: When the DC input voltage is higher than the OVP setting, the inverter shuts-down; Once the input voltage falls below the set OVP value, the inverter will automatically restart.

Default= 30 VDC for 24 V Model, 56VDC for 48 V Model

Model Setting Value Range

24 V 28 VDC ~ 32 VDC 48 V 56 VDC ~ 60 VDC

8). UVP Setting: Setting the inverter’s Under Voltage Protection (UVP) and Shutdown. Default= 18 VDC for 24 V Model, 36 VDC for 48 V Model

Model Setting Value Range

24 V 18 VDC ~ 22 VDC 48 V 36 VDC ~ 44 VDC

9). UVP Recovery: When the DC input voltage is below the set UVP value the inverter shuts-down; Once the input voltage rises

above the set UVP value, the inverter will automatically

restart.

Default= 25 VDC for 24 V Model, 50 VDC for 48 V Model

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SR Series Inverter

Model Setting Value Range

24 V 23 VDC ~ 27 VDC 48 V 46 VDC ~ 54 VDC

10). UV Alarm: Sets Under Voltage (UV) alarm. When the input voltage is

lower than the set value, the unit will sound “beep” to remind that the unit is going to shutdown. At the meantime, the contact in the internal Dry Contact Relay will open / close (See details in Section 3-1-6). Default= 21 VDC for 24 V Model, 42 VDC for 48 V Model

Model Setting Value Range

24 V 19 VDC ~ 23 VDC 48 V 38 VDC ~ 46 VDC

NOTE. The value of voltage set for the “UV Alarm” should be equal to or

higher than the value set for “UVP” or else the unit will shutdown without any audible warning.

5-3-3. O/P Parameters:

11). O/P Voltage: Set the inverter output voltage. Default= 110 VAC for 110 V Model, 230 VAC for 220 V Model

Model Setting Value Range

110 V 97 VAC ~ 123 VAC

220 V 194 VAC ~ 246 VAC

12). O/P Frequency: Set the inverter output frequency.

Default= 60 Hz for 110 V Model, 50 Hz for 220 V Model.

Model Setting Value Range

110 V 47 Hz ~ 63 Hz

220 V 47 Hz ~ 63 Hz

13). Sync Frequency: Sets the AC output synchronous frequency.

Example: AC input= 230 VAC / 50Hz,User setting Value= 7Hz

When the DC to AC inverter “Frequency” is

within The Range of 43 Hz~57 Hz, the internal bypass relay will

operate normally. When the

“Frequency” is less than 43 Hz or more than 58 Hz,

the internal bypass relay will de-energize. (See details in Section 2-2) Default= 0.1Hz ~ 7Hz.

Model Setting Value Range

110 V 0.1 Hz ~ 7 Hz

230 V 0.1 Hz ~ 7 Hz

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SR Series Inverter

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).

Mode Menu

Bypass Relay

Switching Feature

OFF LINE

(See details in Section 5-3)

Exacting

The bypass relay will switch “ON” or “OFF” based on conformance to, the Phase and Sync Frequency window that has been set (Function Code 13)

Normal

The bypass relay will be “ON” if AC input (Grid) power is available. The DC-AC inverter will remain synchronized and Phase with the incoming AC power (Grid). The relay will NOT switch off if the grid frequency is beyond the range set under Sync Frequency window (Function Code 13).

Haphazard

The bypass relay will switch “ON” or “OFF”. Conformance to, phase and frequency synchronization will not be considered.

ON LINE --------- (See details in Section 5-3)

Note. when "Fi=Fg" means

frequency synchronous

DC-AC inverter

AC input (GRID)

DC-AC inverter (Pi)

Phase

Note. when "Pi=Pg" means

phase synchronous

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SR Series Inverter

15). Overload Alarm: Sets the overload alarm. When the output power is higher than the set value, the unit will sound “beep” to remind that the unit is going to shutdown. At the

same time, the internal Dry Contact Relay will open/close (See details in Section 3-1-6). Default= 100% Setting range= 50%~110%

6. RS-232 Communication and Operation

6-1. Operation of RS-232 Serial Port:

6-1-1. This unit uses a standard 9-Pole D connector and three of the RS232 signal

lines:

1 2 3 4 5

6 7 8 9

Signal description PIN

N.C 1 RXD 2 TXD 3 DTR 4

GND 5

DSR 6

RTS 7 CTS 8

N.C 9

6-1-2. The connection between this unit and the computer is as follows:

Computer

Power Inverter

RXD

GND

DXTDXT

GND

RXD

DSR

RTS

DTR

CTS

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SR Series Inverter

6-1-3. The RS232 interface of this unit employs ASCII code to implement the

asynchronous serial transmission control.

The byte structure is START-BIP – 8 BIT DATA-STOP BIT.

Baud rate: 1200/2400/4800/9600(See details in Section 5-3-1).

6-1-4. Coupled with PC software application port. Operation is as detailed in

Section 6-2.

6-2. Interface Commands:

The buffer size used for the RS232 port is 12-byte. This unit will ignore all bytes more than this value. During transmission, this unit will indicate it is ready to receive data from computer by this DTR line. A computer has to check the DTR line before sending any information to this unit. This unit is normally always ready to receive data while operating. When a LF character (ASCII code 0AH) is received, this unit would finish the receiving by clearing the DTR status and begin to interpret the received information. The unit would execute the received command (AND/OR data) if it is correct. Irrespective of whether the command is accepted or not, the unit will always send back a response signal to the computer and set DTR to ready for receiving more incoming information.

6-2-1. The Baud-rate of the RS232 interface can be set with the help of the Setup

Menu (See details in Section 5-3-1).

Note. You have to reset the unit after adjustment to activate the new setting.

6-3. Example

of the RS232 Operation:

6-3-1. RS232 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. The response string is as follows:

= > CR LF: Command executed successfully

? > CR LF: Command error, not accepted

! > CR LF: Command correct but execution error (e.g. parameters out of

range).

If the command needs any information from the unit, the unit would send

the information back to the computer (with CR and LF) and then send the response string to the computer.

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SR Series Inverter

6-3-2. Command format:

This unit supports the following command format.

There should always be a CR (0DH) and a LF (0AH) appended to the

command while sending the command to this unit.

1). Command to switch the Power ON/OFF: Format: Power <value> Example: A space (ASCII code 20H) is needed between Power and

<value>. <value> can be one of the following. “0”: Power off “1”: Power on

2). Command to query the Output Frequency: Format: FRQ? After “Enter”, the unit’s “Output Frequency” appears on the PC screen.

3). Command to query the Output Voltage: Format: VOL? After “Enter”, the unit’s “Output Voltage” appears on the PC screen.

4). Command to query the Output Current: Format: AMP? After “Enter”, the unit’s “Output Current” appears on the PC screen.

5). Command to query the Input Battery Voltage: Format: BAT? After “Enter”, the unit’s “Input Voltage” appears on the PC screen.

6-3-3. Command for accessing Setup Menus and adjusting values:

1). Select the Setup Menus with the help of Function Codes: Format: FUNC <Function Code> After “Enter”, the Setup Menu for the Function Code will be called.

The <Function Code>= 0~17, as follows:

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SR Series Inverter

<Function Code> Setting Menu <Function Code> Setting Menus

0 LCD Contrast 9 UVP Recovery 1 LCD Auto-off 10 UV Alarm 2 RS232 Baud-rate 11 O/P Voltage 3 Buzzer Setting 12 O/P Frequency 4 Alert Setting 13 Sync Frequency 5 NOT USED 14 Bypass Relay 6 OVP Setting 15 Overload Alarm 7 OVP Recovery 16 NOT USED 8 UVP Setting 17 NOT USED

2). Command to query the Functions No: Format: FUNC? After “Enter”, the unit’s “Function Code” appears on the PC screen.

3). Command to query the set value of the Function: Format: SETT? After “Enter”, the existing set value of the function appears on the

PC screen.

4). Command to set or adjust the value of the Function: Format: SETT <value> After “Enter”, the new value of the Function is set Choose the

<value> of the function as follows:

FUNC 0: LCD Contrast

Setting Menu SETT <value>

LCD Contrast 0~100

FUNC 1: LCD Auto-off

Setting Menu SETT <value>

LCD Auto-off Disable~250

FUNC 2: RS232 Baud rate

Setting Menu SETT <value> Baud rate

RS-232

Baud rate

0 1200 1 2400 2 4800 3 9600

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SR Series Inverter

FUNC 3: Buzzer Setting

Setting Menu SETT <value> Buzzer (Beep sound)

Buzzer Setting

0 Disable 1 Shutdown

2 Alert 3 Alert , SHDN 4 Message 5 Message , SHDN 6 Message , Alert 7 Msg , Alert , SHDN

FUNC 4: Alert Setting

Setting Menu SETT <value> Alert

Alert Setting

0 Disable 1 Shutdown

2 Alert 3 Alert , SHDW

FUNC 6: OVP Setting

Setting Menu SETT <value> Model

OVP Setting

30~34

SR1000-124 SR1000-224

60 MAX.

SR1000-148 SR1000-248

FUNC 7: OVP Recovery

Setting Menu SETT <value> Model

OVP Recovery

28~32

SR1000-124 SR1000-224

56~60

SR1000-148 SR1000-248

FUNC 8: UVP Setting

Setting Menu SETT <value> Model

UVP Setting

18~22

SR1000-124 SR1000-224

36~44

SR1000-148 SR1000-248

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SR Series Inverter

FUNC 9: UVP Recovery

Setting Menu SETT <value> Model

UVP Recovery

23~27

SR1000-124 SR1000-224

46~54

SR1000-148 SR1000-248

FUNC 10: UV Alarm

Setting Menu SETT <value> Model

UV Alert

19~23

SR1000-124 SR1000-224

38~46

SR1000-148 SR1000-248

FUNC 11: O/P Voltage

Setting Menu SETT <value> Model

O/P Voltage

97~123

SR1000-124 SR1000-148

194~246

SR1000-224 SR1000-248

FUNC 12: O/P Frequency

Setting Menu SETT <value>

O/P Frequency 47~63

FUNC 13: Sync Frequency

Setting Menu SETT <value>

Sync Frequency 0.1~7

FUNC 14: Bypass Relay

Setting Menu SETT <value> Mode

Bypass Relay

0 ON LINE 1 Haphazard(OFF LINE) 2 Normal(OFF LINE) 3 Exacting(OFF LINE)

FUNC 15: Overload Alarm

Setting Menu SETT <value>

Overload Alarm 50~110

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SR Series Inverter

7. Information

7-1. Troubleshooting

Problems and Symptoms Possible Cause Solutions

No AC Power “Output”

a. LCD Panel Display

“OLP Shutdown”

Short circuit , wiring error. over loading.

Check AC wiring for short circuit . Reduce load.

b. LCD Panel Display

“OVP Shutdown”

Over input voltage (OVP)

Check input voltage Reduce input voltage

c. LCD Panel Display

“UVP Shutdown”

Low input voltage. (UVP)

Recharge battery. Check connections and cables.

d. LCD Panel Display

“OTP shutdown”

Thermal shutdown. (OTP)

Improve ventilation. Make sure ventilation, grilles / slots of the inverter are not obstructed. Lower ambient temperature.

7-2. Warranty

We guarantee this product against defects in materials and workmanship for a period of 36 months from the date of purchase and will repair or replace

any defective power inverters if you directly returned them to us with postage paid. Please note that Cotek is only responsible for ensuring our products are operational before delivering. 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.

8. Appendices

WARNING:

Do not open or disassemble the SR series Inverter.

Attempting to service the unit may cause risk of electrical shock or fire.

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SR Series Inverter

No. 33, Rong Hsin Rd., Pa Teh City, Tao Yuan County, Taiwan

Phone：

886-3-3661581 FAX：886-3-3676029

E-mail：[email protected] http：// www.cotek.com.tw

2011.04 A0