4 ADJUSTABLE TIMERS
MONITORING MODE SELECTION
NFPA110 OPERATING MODE
CT SIZE UP TO 2000A
100-EVENT LOG CAPACITY
8 ADJUSTABLE TIMERS
DUAL GENERATOR MODE
IT MONITORS OVER 20 ALARMS
61 OUTPUT OPTIONS
28 INPUT OPTIONS
15 I/O CHANNELS
RS485 MODBUS PORT
06-33 VDC SUPPLY
-30/+70 OP. TEMPERATURE
The Be28 is 3-phase Automatic Transfer Switch controller. All parameters, alarms and operating functions are indicated by means of a high-luminosity display. The ATS controller Be28 interfaces with configurable digital inputs and configurable analog inputs. The controller displays accurate measurements for Vac, Aac, Vdc, Hz and Battery Vdc. You can check the LOG EVENTS on site and have an overview of the all settings. The Be28 features MODBUS via RS485 and complies with NFPA-110 / NFPA-99. By using our TCP-IP server you can monitor and control the Be28 via INTERNET. You can interface this automatic transfer switch controller with a GSM SMS server in a way to get access via SMS.
The automatic transfer switch controller continuously monitors the status of the utility power (or MAINS if you will). You can set low/high limits for Mains Voltage and Frequency. When the voltage and the frequency are within the limits, the automatic transfer switch controller transfers the load to the utility power. If the voltage drops below the lower limit (or rises above the high limit), the automatic transfer switch controller will disable the Mains circuit. This prevent, after a programmable delay, a severe damage to your load. If the failure persists for a long time the automatic transfer switch controller will take care to start the generator . Once again the automatic transfer switch controller does its business to check the quality of the generator voltage and frequency. To get best performances from Be28 automatic transfer switch controller, we recommend that you supply the panel by using the battery of the engine. The automatic transfer switch controller will guarantee remote control monitoring when there is no utility power. It will properly manage the automatic transfer switch when utility power or generator voltage are not stable. You can use a 12V or 24V battery. The automatic transfer switch controller features adjustable inputs & adjustable outputs providing extraordinary system flexibility.
BE28 BFRONT FASCIA
THIS IS THE USER FRIENDLY DESIGN OF BE28 AUTOMATIC TRANSFER SWITCH CONTROLLER. YOU CAN EASILY UNDERSTAND THE STATUS OF THE SYSTEM AND IMMEDIATELY ACT WHEN REQUIRED.
Engine running status  Presence of generator voltage  KG status  KM status  Presence of utility power  Auto mode  Engine manual control  Load transfer manual control  Manual mode  Off mode
BE28 REAR OVERVIEW
YOU CAN EASILY CONNECT AND DISCONNECT THE REMOBABLE CONNECTION. EACH CONNECTION IS CLEARLY DESCRIBED. THE CONNECTORS ARE DEVIDED IL LOGICAL ORDER.
RS485 MODBUS SERIAL PORT  CONFIGURABLE INPUTS CONNECTIONS  OPTIONAL ANALG INPUTS  POWER SUPPLY INPUT  CONFIGURABLE NPN SHORT-CIRCUIT PROOF OUTPUT  CURRENT MEASUREMENTS INPUTS MAINS AND GENERATOR 600V INPUTS  FIXING SCREWS  SERIAL NUMBERS & PRODUCTION DATA
2 BASIC WIRING DIAGRAM
COST EFFECTIVE SOLUTION FOR STANDBY APPLICATION. YOU NEED ONLY FOUR RELAYS TO ARRANGE A FULLY AUTOMATIC TANDBY CONFIGURATION.
This is the basic wiring diagram of a transfer switch panel. You are required to connect 3 relays  suitable for driving contactors or motorized transfer switches. You can use current transformers  to monitor the load on both sides: mains and generator.The Be28 feautures 3-phase inputs [6-7-8]. You can supply the BE28 from the auto start module . You have large options of programmable inputs outputs. You can monitor your system via serial interface . The load is supplied by generator  or mains  depending on the choosen mode of operation. In this example we use contactors , but you can use motorized transfer switches.
2 GENERATORS & SINGLE LOAD
STATE OF ART AUTOMATIC TRANSFER SWICH CONTROLLER. THE APPLICATIONS NEEDS ONLY FOUR RELAYS TO ARRANGE A FULLY AUTOMATIC DUAL MUTUAL STANDBY CONFIGURATION.
The two Be28 automatic transfer switch controllers directly communicate by means of two wires. The controllers share information about the status of the system and status of the contactors. You can choose priority for generator number one (primary generator) and generator number two (secondary generator). In case of mains failure if a generator fails to work, the Be28 will start the auxiliary generator.
2 LOADS & SINGLE GENERATOR
STATE OF ART AUTOMATIC TRANSFER SWICH CONTROLLER. THE APPLICATIONS NEEDS ONLY FOUR RELAYS TO ARRANGE A FULLY AUTOMATIC DUAL LOAD STANDBY CONFIGURATION.
The two Be28 automatic transfer switch controllers directly communicate each other by means of a single wire. The controllers share information about the status of the system and status of the contactors. Should one MAINS fail, the primary Be28 will start the generator and connects the LOAD. In case MAINS tw0 fails, the secondary controller will instruct the ATS to supply the load. The engine will be stopped only when MAINS 1 and MAINS 2 are continuously stable for a programmaed time.