What is an ATS controller

 An ATS controller s used where you have to control a diesel generator connected to a load for emergency power in a standby configuration. ATS means Automatic Transfer Switch. An ATS controller governs a transfer switch via relays and software subroutines. The ATS controller fitted on an Automatic Transfer Switch panel manages the connection assignment of the LOAD to MAINS or GENERATOR.  The use of an ATS panel avoids power utility back-feeding. BACK-FEEDING occurs when, for some reasons or failures, the generator is being connected to power utility or Mains.  A transfer switch can increase the usefulness of your generator making power management very easy to do.  When power is restored, it automatically reconnects your load to utility source and disconnects it from the generator. You can make your own ATS control panel by using an ATS controller, a metal box of appropriate size, some relays, two CONTACTORS and terminal blocks. The generator must be equipped with an 'AUTO START' module able to start and stop the engine when requested by the ATS controller.  The ATS controller Be28 features AUTO mode of operation, MANUAL mode and TEST mode of operation. The MANUAL control overrides the AUTO mode.

ATS Controller Operating Manual       About Contactors      The BE28 ATS Controller      ATS Controller Wiring Diagram 

How to install an ATS controller

 Inside an Automatic Transfer Switch Panel you can observe:
[1] the ATS controller module
[2] the MAINS circuit breaker
[3] the GENERATOR circuit breaker
[4] protection fuses
[5] voltage connection to the ATS controller
[6] cables to interface with the AUTO START

In the picture an ATS Control Panel of about 20KVA.  LOOKING FOR ALREADY MADE ATS CONTROL PANELS

 

PURCHASE BE28 ATS CONTROLLER  169€ FREE SHIPPING

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How to connect an ATS controller 

The Be28 3-Phase ATS controller features an RS485 serial interface that supports the MODBUS protocol. You will be able to control from a remote location the all functions of the ATS controller by using the software provided free of charge. On the left, the basic Automatic Transfer Switch Panel Circuit Diagram configuration using the BE28 ATS controller (click on the image to enlarge the drawing). The ATS controller is wired to the MAINS via protection fuses. The fuses protect the cables from short circuits. The BE28 ATS controller voltage inputs can work with a permanent voltage of 600VAC in the full operating temperature range of -30°C up to +70 °C. The ATS controller is wired to the GENERATOR via protection fuses as well. Current of the generator is measured via Current Transformers. You are required to use C.T. with a 5 amps nominal output current. The ATS controller drives the coils of the circuit breakers. To avoid back-feeding you are required to use mechanical interlock system (normally available from ABB, LOVATO, GHISALBA ans so on).The ATS controller is connected to the engine via cables.  In some cases extra driver relays are required if the distance is over 100 meters. The ATS controller provides a request of start to the Auto Start module fitted on the diesel generator. The supply for it is protected by fuses. The Power Circuit Breakers are included in the panel in a way to connect the Load  to the Generator or Mains. The BE28 ATS controller is able to manage all the important alarms in a way to protect the generator and the load. You can program for example VOLTAGE and CURRENT limits, but also Frequency and miscellaneous alarms as well.

How to use an ATS controller

 You are reuired to select a mode of operation. The Be28 is 3-phase ATS Controller. All parameters, alarms and operating functions are indicated by means of a high-luminosity display capable of working in a temperature range between -30°C and +70°C. The Measurements including Vac, Aac, Vdc, Hz, Battery Vdc. Software for remote control & monitoring is also provided. The Be28 provides an RS485 serial interface. Be28 complies with NFPA-110 / NFPA-99 specifications and features AUTO-MAN-OFF-TEST modes of operation. By using our TCP-IP/RS485 server you can monitor and control the Be28 via INTERNET. Option for GSM remote control is also provided. READ MORE

How to select a mode of operation for the ATS controller 

The modes of operations are selected by push buttons and indicated by means of green LEDs. Every time the power supply is switched on, the Be28 enters the “AUTO” mode, if the Be28 was in TEST or AUTO prior to power down. In the other cases, the Be28 will enter the OFF mode. The OFF mode clears the fault alarms and allows you to read or program the parameters. The Display and LEDs are turned off and a dot on the display will blink slowly. Push one of the push buttons on the front panel to turn on the display.  READ MORE ABOUT IT

ATS CONTROLLER CONNECTIONS OVERVIEW

[1] RS485 SERIAL INTERFACE   

[2] CONFIGURABLE DIGITAL INPUTS   

[3] CONFIGURABLE ANALOGUE INPUTS 

[4] POWER SUPPLY  6-36Vdc  

[5] CONFIGURABLE STATIC OUTPUT CONNECTIONS

[6] 3-PHASE CURRENT TRANSFORMERS

[7] MAINS & ALTERNATOR VOLTAGE   

[8] REAR COVER FIXING SCREWS

[9] BE142 CONTROLLER FIXING SCREWS  

[10] RESERVED AREA FOR END USER INFORMATION

TIRED? PURCHASE READY FOR USE ATS PANELS     

READ MORE ABOUT ATS CONTROLLER DESCRIPTION

HOW TO USE THE ATS CONTROLLER MANUAL MODE

Push the [MAN] push button to select the MANUAL mode. Push the [START] push button: the Be28 maintains the command to start the engine to controller of the engine for one minute. If the engine fails to start you can try to start again.

When the green LED generator presence will turn on, push the [I] (KG) push button to close the generator circuit breaker. The alarms of Under/Over voltage and frequency are enabled if the Be28 works according to NFPA-110 (parameter P23=ON as described in the OEM user manual). To transfer the load to the Mains, push the [I] (KM) push button; the [KG] will open immediately and after a 2 seconds the Mains circuit breaker will close. To open a circuit breaker, push the [O] push button.

When the engine is running, the green LED turns on. To stop the engine, push the [STOP] push button until the [StOP] message appears on the display. If the engine has already stopped, it is possible to reset the STOP sequence by pressing the [STOP] push button.

HOW TO USE THE ATS CONTROLLER AUTO MODE

Push the [AUTO] push button until the green LED will illuminate. The message [Auto] will appear for a second on display. The engine starts when the Be28 detects a Mains failure. The Mains circuit breaker (KM) opens after the [P.0] timing. Then the timer [P.01] takes place to delay the start of the engine. Once started, after the warm-up ([P23]) time (Voltage and Frequency must be within the settings), the GENERATOR circuit breaker (KG) will close. If the Mains restores, after the [P.02] the KG will open. The KM will close after a programmable changeover timing ([P.3]). The Engine will stop after a cooling down time ([P24]). If the engine shuts down, the KM closes independently of the Mains status if the [P.23] is [ON] (NFPA-110 mode; see the OEM user manual), otherwise the KM will close only if the Mains is within the programmed settings. In AUTO mode, the Be28 can start and stop the engine according to programmed inputs (see Table 7.06 and 7.07 of the OEM user manual).

Note: the BE28 turns on the alarm [Er.11] (Fail to start) if the engine does not start within 8 minutes after the engine start request.

HOW TO TEST THE ATS CONTROLLER

Push the [TEST] push button until the green LED illuminates; the display will indicate the message [Test] for a second. The Be28 starts the engine and transfers the load to the generator if the [P.17] is [on]. To stop the engine, select the AUTO mode (if the Mains is present) or select the OFF mode. If you push the [STOP] push button when the Be28 is in AUTO or TEST, the [Er.09] will energise. To clear the alarm, select the OFF mode (see also section 8.0 of the AMF controller user manual).

HOW TO USE THE ATS CONTROLLER DISPLAY

 Use [←F8] and [F9→] to select a menu. Use [ACK-F10] (see the layout in section 1.0) to display the name of the parameter. The OFF mode shuts down the display and turns on the dot on the right side of it. Push a button to turn on the panel. The following table lists the functions of the display.

       Display Function

Display indications

Pushbutton(s)

Menu & Led indicator

Current of the Generator

(0 up to 999A). Phases L1-L2 & L3.

 

[A XXX][- XXX] [_XXX]

[←F8] or [F9→]

Aac menu

Yellow

[A -G]

[ACK-F10]

Voltage of the Generator

(60V up to 600V). Phases L1-L2 & L3.

[GXXX] [-XXX] [_XXX]

 

[←F8] or [F9→]

Vac menu

Yellow

[U -G]

[ACK-F10]

Voltage of the Mains

(60V up to 600V). If the Mains is simulated (see option [15] in table 7.07) the display will show the message [n-on]

[ nXXX ] (V R-S)

[ -XXX ] (V S-T)

[ _XXX ] (V T-R)

 

[←F8] or [F9→]

[U -n]

[ACK-F10]

Generator Frequency

(20Hz up to 70Hz)

 

[GXXX] Hz

 

[←F8] or [F9→]

Hz/RPM menu

Yellow

[H - G]

[ACK-F10]

Mains Frequency

(20Hz up to 70Hz)

 

[nXXX] Hz

 

[←F8] or [F9→]

[H - n]

 

[ACK-F10]

[SPd]

[ACK-F10]

Battery Voltage

(5,5 Vdc up to 36Vdc)

 

 

Voltage of the Charger Alternator (5,5 -36Vdc)

[bXX.X] Vdc

 

[←F8] or [F9→]

Engine

Yellow

 

[batt]

[ACK-F10]

[cXX.X] Vdc

[←F8] or [F9→]

UNDERSTANDING THE  ATS CONTROLLER DISPLAY MESSAGES

 The Be28 shows alarms (table 4.10) and messages (table 4.20). The presence of an alarm is indicated by the blinking message [ ALAr.]. Push the [→F9] pushbuttons to display the alarm. Push the [←F8] push button to display additional information about alarm (section 8.0 of the user manual).

Display

Message

Description of the Alarm

Display Message

Description of the Alarm

[Er.01]

Over Frequency Shutdown

[Er.08]

Emergency Shutdown

[Er.04]

Alternator Failure Shutdown

[Er.09]

Emergency Shutdown from the Front Panel

[Er.05]

Overload warning

[Er.11]

The engine failed to start

[Er.06]

Under Frequency Shutdown

[Er. 13]

Battery Voltage Warning. Push [←F8] to display

LIST OF THE ATS CONTROLLER ALARM MESSAGES

Display

Message

Description of the Alarm

Display Message

Description of the Alarm

[Hi-C]

Over Current Shutdown or Warning

 

[InP.1]

Input 1 Shutdown / Warning (see 7.07)

[Hi-U]

 

Over Voltage Shutdown

[InP.2]

Input 2 Shutdown / Warning (see 7.07)

[Lo-U]

 

Under Voltage Shutdown

[InP.3]

Input 3 Shutdown / Warning (see 7.07)

[FAIL]

There is an internal failure or memory error in the Be28 controller (see 9.3)

[InP.4]

Input 4 Shutdown / Warning (see 7.07)

ATS CONTROLLER OPERATIONAL MESSAGES LIST

Message

 

Description

Message

 

Description

[ . . . . ]

 

The Be28 is starting the engine

[ProG]

Program mode

[n-on]

MAINS Simulated. A programmable input simulates the presence of the Mains (see option [10] in the table 7.07).

[-CAL]

Calibration mode

[ - - - - ]

The measurement is not available.

[StoP]

The Be28 is stopping the engine

[tESt]

 

Test mode

[AUTO]

The message appears for one second when you enter the AUTO mode

[MAN]

The message appears for one second when you enter the MAN mode

[- P0]

This message appears when the Be28 counts the mains breaker timing (*)

[- P1]

This message appears when the Be28 counts the mains failure timing (*)

[- P2]

This message appears when the Be28 counts the mains restore timing (*)

(*) Push [ACK-F10] to display the status of the count down of the timer.

Automatic Transfer Switch TUV ISO9001
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