MAIN FEATURES

• Start/stop commands for the generators via the PMCBus

• An internal synchronizer with voltage, frequency and phasedifferences control

• Management of active power setpoints for the generators, to allowthe gradual transfer of the load

• Management of power factor setpoints for the generators, whenoperating in parallel with the mains

• Fixed power control when in parallel to mains (BASE LOAD), with thepower setpoint for the generators adjustable by parameter or byanalogue input

• Variable power control when in parallel to mains (IMPORT EXPORT,or variable kW on the generators to guarantee a fixed power on themains), with power setpoint for the mains adjustable by parameter orby analogue input

• The loss of mains protections, to isolate the generators from themains in case of failure of the mains itself

• The LOAD SHEDDING function (non-priority loads disconnection),with 4 available levels

• The PEAK SHAVING and PEAK LOPPING functions (start ofgenerators due to excessive demand of the load from the mains)

• Embedded alarm sounder

• Multi-language display (EN, IT, FR, PT, ES, RU)

Using the internal calendar clock (with rechargeable backup battery:

• Periodical genset start-up with programmable rate (this test canbe done without load, in parallel to the mains or in island mode bytransferring the loads from the mains to the generators)

• Selectable days and time intervals in which the generators mustnever be started

• Selectable days and time intervals in which the generators mustbe started even if the mains is present

• Periodical and ‘on-event’ history logs

EMBEDDED FUNCTIONS

The MC400 offers true RMS measures for:

• Mains voltages• Genset bus bars voltages

• Circulating currents

• Active, reactive, apparent power and power factor on the mains (totaland by phase)

• Active, reactive, apparent power and power factor on gensets busbars (total)

The MC400 is equipped with inputs and outputs, both digital andanalogue, all freely configurable, to meet the specific needs of theapplication.Thanks to the configurable AND/OR ‘Logics’ it is possible to configurespecific operating sequences for each type of application.The controller is equipped with a graphic monochrome display 128x 64 pixel 70 x 38 mm, with icons and symbols, for a quick review ofmeasurements (mains and gensets) and system status. It also allowsthe manual opening and closing of both the mains circuit breaker(MCB) and the master genset circuit breaker (MGCB), via two dedicatedbuttons.

COMMUNICATIONS

• USB port (Modbus RTU)

• RS232 serial port (Modbus RTU) - it supports an external GSM/GPRS modem

• Isolated RS485 serial port (Modbus RTU)• Ethernet port with RJ45 connector (Modbus TCP)

• Insulated CANBUS interface for the connection of the expansionmodules (EXBUS)

• Insulated CANBUS interface for the connection of the other MeccAlte controllers (PMCBUS)

Options

• REWIND - GPRS/GSM/GPS device (for SIMONE)

TECHNICAL DATA

• Supply voltage 7-32V DC

• Power consumption typically less than 5W (standby, controllerswitched on, LCD lamp switched off)

• Operating frequency 50Hz or 60Hz

• Transflective graphic LCD display, monochrome, with backlight

• Graphic display resolution 128 x 64 pixel

• Graphic display dimensions visible surface 70 x 38 mm

• Recommended operating temperature -30°C to +70°C

• Storage temperature -30°C to +80°C

• Protection degree IP65 (only with gasket correctly installed)

• Weight 1100grammes

• Overall dimension 244 (W) x 178 (H) x 40 (D)

• Panel cut-out 218 (L) x 159 mm (H)

• EMC conforms to EN61326-1

• Safety built in conformity to EN61010-1