DER1 Regulator
2023-03-31
1. Architecture of the system
The DER1 is a voltage regulator for synchronous alternators, designed for stand alone working and calibration; to maximize performances,
the regulator should be intended as part of a system made up of at least three components: the DER1 (control unit), a communications module
(USB2DxR, for example) and a supervision unit, as illustrated in figure 6. The connectors for connection to and from the power generator and
communications module are located on the DER1 regulator.
2. Technical Characteristics of the device installed on board
• Digital controlled regulator, based on DSP
• Suitable for all Mecc Alte self-regulated alternators
• Power connections through 20 poles(1) Fast-On connector (see fig.2)
• Protection of power winding with 5A fast acting fuse
• Signal connections (Pext, 60Hz Jumper, APO) through 10 poles mini Fast-On separate connector
• Environmental temperature: -25°C ÷ +70°C
• Voltage supply: 40Vac÷270Vac (2)(from auxiliary winding, output voltage or PMG)
• Maximum continuous output current: 5Adc
• Frequency range: 12Hz÷72Hz
• Three phase or single phase sensing in all connections (Y-D-YY-DD)
• Single phase or three phase sensing automatic recognition
• Average value of voltage regulation
• Voltage regulation range (sensing) from 75Vac to 300Vac
• Precision of voltage regulation: ± 1% from no-load to nominal load in static condition, with any power
factor and for frequency variations ranging from -5% to +20% of the nominal value.
• Precision of voltage regulation: ± 0,5% in stabilized conditions (load, temperature).
• Transient voltage drop and overvoltage within ± 15%
• Voltage recovery time within ± 3% of the value set, in less than 300 msec.
• Programmable Soft start
• Parameters: VOLT, STAB, AMP and Hz settable by trimmers (default), 50/60Hz settable by a
“jumper” (default), all parameters programmable via software
• 0÷2,5Vdc or -10÷+10Vdc external voltage for analogical remote control of output voltage
• Remote control of output voltage through external potentiometer (from 25Kohm to 100Kohm)
• Underspeed protection with adjustable threshold and slope
• Overvoltage and undervoltage alarms
• Excitation overcurrent protection with delayed intervention
• Underexcitation alarm/loss os excitation(6)
• Management of temporary short circuits (start up of asynchronous motors)
• Open collector output (not insulated) signalling some allarm intervention with programmable activation in
respect of each alarm and possibility of the intervention delay and selectable active level(6)
• Allarm conditions storage (type of alarm, number of events, duration of the last event, total time)
• Memorization of the regulator operation time
• USB communications interface (with optional USB2DxR module)
3. Inputs and Outputs: technical specifications
Note 1) The terminals are connected to each other on the board: 2 with 3, 4 with 5, 6 with 7, 9 with 10, 11 and 12.
Note 2) Minimum power voltage 40 Vac at 15 Hz, 100 V at 50 Hz, 115 V at 60 Hz
Note 3) With external EMI filter 182/K (3m without EMI filter)
Note 4) 50·(100%-αHz%) or 60·(100%-αHz%) where αHz% is the position relative to the Hz trimmer or the percen
tage value of parameter P[21]
Note 5) Value not to be exceeded. The effective range depends on parameter P[16]
Nota 6) Starting from revision 19 of the firmware
4.Overall dimensions drawings
What is a generator used for?
Denyo Controller Specification
