Compact C1312 Manuale operativo

Studer Solartechnik Sinewave Inverter, Battery Charger

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Combination Inverters/Chargers

COMPACT C1312

COMPACT C2324

COMPACT C3048

User and Installation Manual

This document has been produced to accompany the

Studer User and Installer Manual.

For any further information regarding installation or using this range of COMPACT inverters/chargers

please contact the engineering dept. at Morven Electronics Ltd.

Tel. +44 (0) 141 8103100

Fax. +44 (0) 141 8103111

Email [email protected]

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General Description

The COMPACT is a sine wave inverter with an integral battery charger along with many

additional features. It has been developed to be used as a stand-alone AC source

(independent of a grid-system), or as a continuous / break-free source when attached to an

external AC supply (Grid or generator).

The COMPACT can be split into 3 (or 4 if solar regulator fitted) main components:-

1. The Inverter

The sinewave inverter built into the COMPACT generates a sinusoidal AC voltage with a very

precisely stabilised voltage and frequency. In order to start electric motors it has a short term

surge capability of three times the nominal output power. The inverter is protected against

overload, over temperature and short-circuits.

The inverter also has an adjustable ‘Standby’ mode to provide the smallest energy consumption

possible from the batteries. This feature detects whether a load is connected to the AC OUTPUT

and if not switches the AC OUTPUT to OFF. It briefly switches ON again approximately every

second to check whether the load is below the minimum value set by adjusting the ‘Standby’

knob on the control panel. This load can be adjusted from 1 – 20 watts. The inverter will

automatically switch ON if it detects a load present at the AC OUTLET.

2. The Transfer System

The COMPACT can be connected to an AC source at the AC INPUT connector. (e.g. grid system

or generator). The transfer system monitors this voltage and if it is within pre-set limits

switches OFF the inverter and transfers it to the AC OUT connector. Depending on the power

rating of the AC source and the load on the AC OUT the Transfer System also uses available

power from the AC INPUT to charge the batteries.

3. The Battery Charger

A microprocessor controlled battery charger is built into the COMPACT. This charger employs a

3 – 4 stage charging profile to ensure full charge is returned to the batteries as quickly and

safely as possible. The desired charging current can be adjusted from 0 Amps to full power by

the ‘Charger’ knob on the control panel. Due to a closely regulated Float voltage the batteries

can remain continuously connected.

4. The Solar Charge Regulator (If fitted)

With the built-in solar charge regulator, the COMPACT is a complete solar power centre.

In a solar installation the batteries can be charged from this solar regulator and/or an

external AC source if available at the same time. This power sharing is controlled

automatically.

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IMPORTANT

Please read and understand the:

1.2 Quality and Warranty

1.3 Warranty Disclaimer

1.4 Liability Disclaimer

1.5 Precautions

1.6 Special Precautions

on Pages 4 and 5 of the ‘User and Installer Manual’ booklet accompanying the unit, prior to

proceeding with installation or servicing.

Prior to starting Installation

1. Important:- Ensure that the model of Compact is compatible with the battery voltage

The last two digits in the model number denotes the battery voltage.

(e.g. C3548 should only be connected to a 48Volt battery).

2. Determine whether the batteries are sealed-gel or normal lead-acid batteries.

Set the small slider switch ‘Equalize’ to the OFF position (down) for Sealed-

Gel batteries, or to the ON position (up) for normal lead-acid batteries.

Equalize switch

Slide up for ON

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Installation of the Compact

Stage 1:- Connection to the battery

The Compact is supplied with heavy duty input cables. Firstly connect the Red cable onto the positive

terminal of the battery. On connecting the Black cable to the negative terminal a spark will be produced

as the input reservoir capacitors are charged. The Red LED 13* on the front of the unit marked ‘OFF’

should be illuminated. If not, press the ‘ON/OFF’ button 19* positioned below to illuminate it.

On connecting to a battery the Compact needs 1 – 2 minutes to calculate the actual capacity of the

battery. During this time the LEDs 14–17* on the front of the unit indicate the battery condition as

100% charged.

If the LED 12* marked Batt Low/High is illuminated this indicates that the battery voltage is too low.

If the LED 12* marked Batt Low/High is flashing this indicates that the battery voltage is too high.

If the COMPACT is connected with the incorrect battery polarity it is probable that the internal input fuse

will be damaged. Before attempting to replace this fuse, ensure all connections (including the battery

leads) are removed. If after replacing this fuse and correcting the battery polarity the unit still does not

operate, the unit has received further damage and will need to be returned for repair.

Please refer to the ‘Display and Operating Panel’ photograph on page 6

Remote

Control

Input

Transfer

Delay

switch

Auxiliary

Contacts

Temp

control

Input

INPUT AC

OUTPUT

Battery

Positive

lead

Battery

Negative

lead

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Stage 2:- Connecting the 230Vac appliance (AC Output)

Caution Ensure that the inverter is OFF prior to connecting this cable.

The 230Vac consumer device (load) must be connected to the screw terminals marked ‘AC OUTPUT’.

For this use a 3-core mains cable with a minimum cross sectional area of 2.5mm2.

Connections marked as follows:- ‘N’ - Neutral (blue)

‘PE’-Earth(green/yellow)

‘L’-Live(brown)

Stage 3:- Connecting the 230Vac Input Supply (AC Input)

Caution Ensure that the AC source is disconnected prior to connecting this cable.

The 230Vac supply from a network or generator must be connected to the screw terminals marked ‘AC

INPUT’. For this use a 3-core mains cable with a minimum cross sectional area of 2.5mm2.

Connections marked as follows:- ‘N’ - Neutral (blue)

‘PE’-Earth(green/yellow)

‘L’-Live(brown)

Stage 4 :- Connecting to the Auxiliary Contacts

These three terminals are potential free (volt free) change-over relay switch contacts.

The maximum permitted current and voltage for these contacts is 16A/250Vac. The schematic of these

switch contacts is clearly marked above each of the terminals. This schematic illustrates the relay in the

non-active state. LED 5* on the front of the unit will illuminate if this relay is Active.

The relay can be programmed to switch due to various conditions (Programming mentioned later). It is

factory set to operate during the following conditions:-

1. Over temperature

2.Overload

3. Over-voltage or Under-voltage on the batteries

4. If the COMPACT has been turned OFF manually or with a fault.

The relay can also be manually switched ON/OFF using button 21* on the front of the unit.

Please refer to the ‘Display and Operating Panel’ photograph on page 6

Stage 5:- Connecting the optional Remote Control (if required)

The remote control (RCC01) is connected by simply pushing the RJ11/8 connector located on the end of

the cable supplied into the socket marked ‘Remote Control’ on the end of the COMPACT. The other end

of the cable plugs into the RJ11/8 connector on the Remote Control.

The remote control is supplied with a 20m cable. This cable can be replaced with a standard RJ11/8 up

to a maximum length of 40metres.

Stage 6:- Connecting the Temperature Sensor (if required)

The temperature sensor (CT-35) is connected by simply pushing the RJ11/6 connector located on the

end of the cable supplied into the socket marked ‘Temp’ on the end of the COMPACT. The sensor must

then be securely fastened to the wall of the battery or close to it. The temperature sensor cable must

not

be tied to the battery leads or laid into part of a wiring loom.

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the COMPACT Display and Operating Panel

LED indicators

LED Title LED Illuminated LED Flashing

1 AC IN Volts at AC INPUT within set limits Volts at AC INPUT outside set limits

2 CHARGER The Battery charger is operating Input volts/frequency outside set limits

3 SOLAR CHARGER Solar modules delivering energy (if used)

4 Program Program mode for Aux. contact

5 Contact Active Aux. Contact is activated

6 Contact Manual Aux. Contact manually activated

7 Transfer system is active. Incoming AC is being

sent directly to AC OUT

8 AC OUT Volts present at the AC OUT outlet The Inverter is in Standby-Mode

9 INVERTER Inverter is operating Forced-Inverter Mode

10 Over Temp Temporary shutdown due to Over Temp.

11 Overload Temporary shutdown due to Overload

12 Batt. Low/High Battery Volts are too low Battery Volts are too high

13 OFF Unit OFF. Must be manually restarted Unit OFF. Will restart automatically.

14 Battery Charger in Equalisation cycle

15-18 Charge condition of battery LED15 – Absorption time is running

25 CURRENT

MONITOR In Inverter mode displays the output power in % of Pnom.

In Charger mode displays charge current in Amps. 200% LED indicates power sharing

Push buttons

19 ON/OFF

Turning the COMPACT ON and OFF (Help button for programming)

20 RESET

Switches Alarm Signal OFF after fault (Help button for programming)

21 Aux. Contact

Manual ON/OFF for Aux. Contacts (Help button for programming)

Adjustment Knobs

22 CHARGER

Adjustment for maximum charging current

23 TRANSFER

Adjustment for Transfer Voltage. (Voltage COMPACT switches from Transfer to Inverter mode

24 STANDBY

Adjustment for Standby level. (load where COMPACT switches from Standby to normal operation)

26 INPUT LIMIT

Must be adjusted to the maximum available current of your AC INPUT supply (explained later).

22 23 24

7 8

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OPERATION of the COMPACT

The Inverter

When operating in Inverter Mode LED 9* (Inverter) will illuminate. This indicates that 230Vac is being

delivered to the AC OUTPUT with the power being derived from the batteries. The inverter automatically

switches on if the AC INPUT is out of the preset limits. The power being taken from the inverter by the

AC load (consumer appliance) is displayed as a percentage of the maximum power of the unit on the

Power Monitor (25)*. The inverter has a 3-times full power surge capability for starting large motors

etc.

Standby Mode

When in Inverter Mode the COMPACT continually monitors the load on the AC OUT. If this load falls

below a presettable level, set by the ‘Standby’* knob, the Inverter will switch OFF to avoid taking

power unnecessarily from the batteries. This load can be adjusted between 1 to 20 Watts using the

‘Standby’* knob. The Inverter will then briefly switch on every second to check if the load has

changed. When in ‘Standby’ Mode LED 8* (AC OUT) will flash. Once the load is above the preset level

the inverter will automatically switch to normal operating mode.

To set the Standby mode to the correct level firstly switch off all AC appliances connected to the AC

OUTPUT. Turn the ‘Standby’* knob anti-clockwise until LED 8* is flashing. Connect the smallest load

that will be used, e.g. mobile phone charger, to the AC OUTPUT. Turn the ‘Standby’* knob clockwise

until LED 8* illuminates continuously. If Standby Mode is not required and the inverter is to operate

regardless of the load then turn the ‘Standby’* knob fully anti-clockwise to the OFF position.

Overload

The inverter is designed to operate continuously at its full rated power or for short periods above this

rated power. If the unit is operated for long periods above its maximum rating it will shut down

automatically. At this point the ‘Overload’ LED 11* will illuminate and the ‘OFF’ LED 13* will flash.

After 10 seconds the inverter will switch ON again automatically. If the inverter is overloaded 4 times

within a short period of time then it will no longer switch ON automatically and the ‘ON/OFF’ button

19* will need to be pushed to restart the unit.

Over Temperature

The COMPACT has an internal cooling fan that switches ON when the ambient inside the unit reaches a

certain level. If there is insufficient ventilation around the unit, or if the external ambient temperature

exceeds the maximum level, the COMPACT will shutdown due to over-temperature within the unit when

operated at high power. At this point the ‘Over Temp’ LED 10* will illuminate and the ‘OFF’ LED 13*

will flash. One minute before the unit switches OFF an audible alarm will sound. The unit will restart

automatically after cooling down.

Battery Condition

Deep discharge leads to high reduction of capacity and early ageing of the batteries. When the battery

voltage drops too low (see below) the inverter will switch OFF automatically. At this point the ‘Batt

Low/High’ LED 12 will illuminate and the ‘OFF’ LED 13 will flash. One minute before the inverter

switches OFF an audible alarm will sound. The unit will automatically restart after the battery volts

increase above the minimum switch ON level (see below).

**Switch OFF level 12V unit 11.8V 24V unit 23.6V 48V unit 47.2V

**Switch ON level 12V unit 12.1V 24V unit 24.2V 48V unit 48.4V

Please refer to the ‘Display and Operating Panel’ photograph on page 6

These are the levels pre-programmed into the COMPACT and recommended by most battery

manufacturers. If required these values can be altered. See Programming.

Studer Solartechnik Sinewave Inverter, Battery Charger

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The Battery Charger

While the battery charger is operating there will still be AC power delivered to the AC OUTPUT.

Cycle of Charge

During the pre-installation set-up of the COMPACT the small slider switch ‘Equalize’ should have been

set to the OFF position for sealed Gel, or to the ON position for normal lead-acid batteries. The unit has

been factory set to accurately fully recharge and maintain both types of batteries. Due to this closely

monitored charging regime, the COMPACT can be left permanently connected to the batteries without

risk of over-charging. These factory settings suit most battery manufacturers’ charging

recommendations however they can be programmed to different values if required. See Programming.

The charger functions are shown in the diagram below.

3 / 4 Stage battery charging algorithm

Equalisation Charging

Warning:- Equalisation mode should never be used with GEL batteries.

When charging Lead-acid batteries the COMPACT unit will automatically introduce an Equalisation

process into its normal 3-stage charging regime during every 25th Charge. This helps mix the electrolyte

within the batteries and clean the lead plates. During this phase the ‘Equalize’ LED 14 is illuminated.

Important:- Charging batteries produce explosive gasses

2.50

2.30

2.10

1.90

Volts

Current

Volts

per

Cell

Amps

A Charging time

B Equalisation time

C Absorption time

(if used).

D Floating

Studer Solartechnik Sinewave Inverter, Battery Charger

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Power Sharing

To manage the power available from the AC Input, the COMPACT is equipped with a system called

‘Power Sharing’ or ‘Input Power Distribution’. This system monitors the amount of power available from

the AC INPUT and the amount of power required at the AC OUTPUT. If there is any spare capacity from

the AC INPUT it is used to charge the batteries. It always gives priority to the AC OUTPUT. When ‘Power

Sharing’ is used the red 200% LED* is illuminated to indicate limited charge.

AC Input Limit

The ac input current can be adjusted using the ‘INPUT LIMIT’* knob on the control panel. This

enables the COMPACT to be operated from an AC source that has a limited supply current. (e.g. running

from a small generator or a supply with a 6Amp circuit breaker). Turning this knob anti-clockwise

decreases the current limit. For normal installations this knob should be turned fully clockwise.

Charging Current

The maximum charging current for the battery should be set between 10 – 20% of the battery capacity.

e.g. for a 200Ah battery the charging current should be set between 20 – 40Amps.

The charging current is indicated on the ‘CURRENT MONITOR’* on the front panel. (and on the

Remote Panel if used).

Battery Condition

The built-in microprocessor has a specially developed algorithm to calculate the actual state of charge of

the batteries. The result is indicated on LEDs 15 – 18* on the control panel.

Led 15 - Battery 75% - 100%

Led 16 - Battery 50% - 75%

Led 17 - Battery 25% - 50%

Led 18 - Battery 0% - 25%

The Transfer system

When an AC voltage is at the AC INPUT of the COMPACT, the ‘AC IN’ Led 1* is illuminated. If this

voltage is within the presettable voltage and frequency range, adjustable using the ‘TRANSFER’* knob

described in the next section, this voltage is switched directly to the battery charger and the output ‘AC

OUT’. At this point the ‘TRANSFER’ LED 7* is illuminated. The inverter is switched OFF and the

battery charger is switched ON. The Maximum current of the Transfer switch is 15Amps. This means

that loads of up to 3500Watts can be connected to the AC OUTPUT. When the battery charger is

operating, part of this power is used to charge the battery as described in ‘Power Sharing’ at the top of

this page.

The Transfer system is protected against overload with an automatic/resettable fuse on the side of the

COMPACT.

Setting the Transfer Voltage Threshold

The voltage at which the Transfer system switches ON/OFF the Inverter can be adjusted using the

‘TRANSFER’* knob on the control panel. It is factory set for 200Vac. This means that when the input

voltage at the AC IN terminal reaches 200Vac the Inverter will switch OFF and the AC IN will be

connected to the AC OUT. If the AC falls more than 20 volts below the set voltage (i.e. 180Vac) the

Inverter switches ON and the AC OUT is disconnected from AC IN. This factory setting is the optimum

for most appliances that will be connected to the COMPACT.

Please refer to the ‘Display and Operating Panel’ photograph on page 6

Studer Solartechnik Sinewave Inverter, Battery Charger

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Fast UPS-Mode of Transfer

The fast, break-free transfer mode is programmed with the slide switch ‘ Transfer Delay’ located on the

side of the COMPACT. With this switch in the OFF position the Inverter will switch ON at once if the

voltage at the AC INPUT drops below the set value mentioned in the previous section. This switch -over

takes 20mSecs which ensures a break-free change-over for almost all appliances. In most installations

the COMPACT should be operated in this mode.

Delayed Mode of Transfer

In some installations it may be advantageous to have a delay between the voltage at the AC INPUT

falling below the set ‘Transfer Voltage Threshold’ and the Inverter switching ON, for example if the

COMPACT is being operated from a small generator and a vacuum cleaner is switched ON. This will

result in the generator voltage being pulled low for a short period whilst the vacuum cleaner powers up.

It is therefore not necessary to switch the Inverter On during this period. To allow a 5 second delay

between the AC INPUT voltage dropping below the threshold voltage and the Inverter switching ON, the

slide switch ‘Transfer Delay’ should be set to the ON position.

If the AC INPUT voltage falls below 100Vac this delay is overridden and the Inverter switches ON

instantaneously as it interprets this as a supply failure.

The Solar Charger Regulator (optional)

The COMPACT also has an option of an integrated Solar charge regulator for charging the batteries. The

Solar Charge regulator works automatically and is always in operation. As soon as energy is delivered

from the solar modules the ‘SOLAR CHARGE’ LED 3* is illuminated and energy is delivered into the

batteries in the same charging regime as the battery charger. The Solar Regulator will operate in parallel

with the battery charger reducing the amount of energy taken from the AC source.

Ensure the correct voltage of solar modules is used. Never connect any other systems such as a wind

generator to this input.

The Multifunctional Auxiliary Contact

As mentioned in ‘Stage 4’ of the installation, the COMPACT is fitted with three terminals which are

potential free (volt free) change-over relay switch contacts.

The maximum permitted current and voltage for these contacts is 16A/250Vac. The schematic of these

switch contacts is clearly marked above each of the terminals. This schematic illustrates the relay in the

non-active state. LED 5* on the front of the unit will illuminate if this relay is Active.

The relay can be programmed to switch due to various conditions. (Programming mentioned later). It is

factory set to operate during the following conditions:-

1. Over temperature

2.Overload

3. Over-voltage or Under-voltage on the batteries

4. If the COMPACT has been turned OFF manually or with a fault.

The relay can also be manually switched ON/OFF using button 21* on the front of the unit.

Please refer to the ‘Display and Operating Panel’ photograph on page 6

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