Electronic Control Box
4
1.1 Versions
• M7000CB - Standard version
• M7000CB/EVO - Evoluted version + interface RS-485
1.2 Description
• Electronic Control Box - microprocessor
• Two inputs of three-phase voltage measurement
• Power supply DC 12-24-48 VDC
• Power supply AC 220-240 VAC
• 2 LED displays, 3 digits 7 segments
• 20 status and measurement LED indicators
• 8-key membrane keypad
• RS-232 serial interface for set-up, remote control and supervision
• RS-485 opto-isolated interface (M7000CB/EVO)
• 2 programmable digital inputs
• 3 programmable relay outputs (1NO + 2 C/O)
1.3 Applications
• Changeover between utility-to-utility, utility-to-generator
• Control of motorized circuit breakers, motorized switches
• Start/stop generator
• Three-phase, two-phase or single-phase voltage controls
• L-L voltage (or L-N voltage in case of monophase lines)
• Controls on minimum voltage, maximum voltage, phase loss, asymmetry, minimum
frequency, maximum frequency, with independent enabling and delay
• Voltage thresholds with programmable hysteresis
1.4 Installation
• Install the electronic control box according to the wiring diagrams shown in the last pages
of the manual
• Use the right wiring diagram for the application
• Set the parameters according to the required wiring diagram, paying special attention
when programming the inputs / outputs
1. General features
1.5 Supply
• M7000CB and M7000CB/EVO have a double power supply circuit, that means that they
can operate with both AC and DC supply or with only one of the two indifferently
• In presence of both power supplies, the energy is taken from the AC source
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