Mecc Alte DSR Technical Manual
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Mecc Alte DSR Technical Manual

Digital regulator
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Guida Tecnica:
Regolatore Digitale DSR
Technical Guide:
DSR Digital Regulator
E309573

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Summary of Contents for Mecc Alte DSR

  • Page 1 Guida Tecnica: Regolatore Digitale DSR Technical Guide: DSR Digital Regulator E309573...
  • Page 2 USE OF PROGRAMMING SOFT. AND MONITORING OF THE DSR TERMINAL pag. 29 Installation pag. 29 Introduction pag. 29 Description of function pag. 30 Setting Files pag. 31 APPENDIX A pag. 34 APPENDIX B pag. 37 Instruction Manual DSR digital regulator - rev. 05 - pag. 2...
  • Page 3 The regulator is available in two versions called DSR and DSR/A, the first is the standard one, optimized for Mecc Alte alternators from series 3 to 38, the second is optimized for Mecc Alte alternators series 40- 46;...
  • Page 4 Memorization of the regulator operation time (starting from revision 11 of the Firmware) • • RS232 and RS485 serial communications interface (with optional DI1 module) WARNING : Operation of the DSR is not specified below 12 Hz. 3. Inputs and Outputs: technical specifications TABLE 1 : CONNECTOR CN1 Function...
  • Page 5 In the event of damage, advise the shipper, the insurance company, the seller or Mecc Alte immediately. If the regulator is not installed immediately, store it in its original packaging in a dust and humidity-free environment.
  • Page 6 Configuration Menu, it provokes the commutation of the underspeed protection threshold from 50·(100%- Hz%) to 60·(100%- Hz%), where Hz% represents the position relative to the Hz trimmer or the percentage value entered in location 21 (where 10% corresponds to 16384). Instruction Manual DSR digital regulator - rev. 05 - pag. 6...
  • Page 7 Drawing SCC0059/02 Series 3 alternators with 6 terminals Reference from 140V to 280V Drawing SCC0060/02 Series 3 alternators with 12 terminals Reference from 70V to 140V Instruction Manual DSR digital regulator - rev. 05 - pag. 7...
  • Page 8 Drawing SCC0061/02 Series ECO alternators with 6 terminals Reference from 140V to 280V DrawingSCC0062/01 Alternators with 12 terminals, with reference on half phase, from 70V to 140V Instruction Manual DSR digital regulator - rev. 05 - pag. 8...
  • Page 9 Drawing SCC0063/02 Alternators with 12 terminals, with reference on entire phase from 140V to 280V Drawing SCC0064/02 Alternators 12 terminals, with reference on half phase from 140V to 280V Instruction Manual DSR digital regulator - rev. 05 - pag. 9...
  • Page 10 6. Serial communications The DI1 communications module (which is provided for connection to the COM connector of the DSR) is equipped with a RS232 port and a RS485 port, through which it is possible to set the parameters (for both configuration and operation) and monitor operation of the generator.
  • Page 11 The serial interface of the Dl1 communications unit is of the RS232 or RS485 type: it will therefore be pos- sible to connect several DSR-Dl1 groups as well (and therefore several generators) in parallel on the same 485 Bus, in order to monitor the operation with a single supervising unit. The regulator implements a sub- system of the MODBUS standard for communications;...
  • Page 12 Parameters can be read/written and machine operational settings entered through serial connections. Two versions of this regulator are available: DSR and DSR/A; they differ mainly in the default parameters. Table 3 shows a complete list of the parameters that can be set, which define all the operational conditions of the regulator.
  • Page 13 Alternatively, the DSR can be configured by directly setting the value of the P[10] parameter; in this case the value is calculated before entry, summing the numbers indicated in the column "Value" of Table 4, corresponding to the functions it is desired to enable.
  • Page 14 B13 Bit enabling DAC 8192 B14 60Hz active setting 16384 (jumper 60Hz closed and/or 60Hz active setting on configuration menu) B15 Reserved 32768 NOTE (1) : starting from rev.15 of the Firmware. Instruction Manual DSR digital regulator - rev. 05 - pag. 14...
  • Page 15 P[8]=64 and P[9]=16384; for low power alternators of the ECO/ECP3 series, the effects of a reduction of both the duration and limitation of the current may be experimented, such as P[8]=16 and P[9] =4096. Instruction Manual DSR digital regulator - rev. 05 - pag. 15...
  • Page 16 P[11] parameter. The value of the integral gain K pends on the values of parameters P[12] and P[13] and, only for the standard DSR (grey box) with the STAB trimmer enabled, even on the 50/60Hz setting.
  • Page 17 ; at 60Hz the transformation function is Fcig , different from that at 50Hz, (fig. 6a); in the other versions of the DSR (fig. 6b), for example DSR/A (blue box), or if the STAB trimmer is disabled (fig. 6c), not only is there a difference between the integral value at 50Hz and at 60Hz, but even the value of loca-...
  • Page 18 32640 ECO38-3LN/4 9½ 30077 27610 NOTE 1) DSR: P[11] = 4, P[12] = 3, P[13] = 16384, with STAB trimmer enabled NOTE 2) For standard application; for special application: STAB=4 L[33]=8576 L[53]=2244; NOTE 3) For standard application; YY 230V/60Hz and singlephase...
  • Page 19 30077 27610 3000 28096 24090 NOTE 1) DSR: P[11] = 4, P[12] = 3, P[13] = 16384, with STAB trimmer enabled NOTE 2) For standard application; for special application: STAB=4 L[33]=8576 L[53]=2244; NOTE 3) For standard application; YY 230V/60Hz and singlephase...
  • Page 20 3. Excitation Overcurrent 3.1 Description The DSR regulator is equipped with an excitation (main rotor) winding temperature estimator. An estimate of the temperature is memorised in real time (and can be read) at location 45. The progress of the tempe- rature is of the exponential type (see figure 7).
  • Page 21 7) Alarm 5 should come on (visible from both the DSR Terminal control panel and because there is a change in the flashing indicator light) and the voltage should start to drop. 8) By going back to the nominal speed, alarm 5 should disappear in a few seconds and the voltage of the generator should increase to the nominal value.
  • Page 22 Vaux is considered proportionate to Vout and the proportional coefficient is determined by parameter 14. If the DSR is powered directly by the regulated phase, parameter 14 should be set on 0; in case it is powered by auxiliary winding, the voltage (Vaux) must be measured, in no-load conditions and with output voltage regulated on the nominal value (Vout);...
  • Page 23 2 seconds; it flashes differently in the event of intervention or alarm, as indicated in fig. 9. LED OFF LED ON LED ON CHECKSUM SHORT CIRCUIT Hz or O.S. AMP and (Hz or O.S.) fig. 9 STOP t [sec] Allarm intervention Instruction Manual DSR digital regulator - rev. 05 - pag. 23...
  • Page 24 The threshold can be set with parameter 26. NOTE: Though the voltage is continuously regulated, the DSR will switch off if the frequency goes under 20Hz. To reset the system it is necessary to stop completely the alternator.
  • Page 25 TT (last column of the file .alr). For the procedure please refers to the function “Download Alarm” at the paragraph “Description of function” of chapters “USE OF PROGRAMMING SOFT. AND MONITORING OF THE DSR TERMINAL” and “APPENDIX A”. NOTE (1): starting from rev.11 of the Firmware...
  • Page 26 For more information refer to the technical guide “USB - Serial converter” (available only in Italian/ English. The DI1 interface also permits isolation of the A.P.O. contact of the regulator : terminal 14 of the DSR must be connected to terminal 5 of CN1 (as indicated with the dotted line in fig. 12).
  • Page 27 For use of relay insert a bridge APO-C Common of relay Voltage DC 24V Voltage between terminals 1 and 3 of CN5 Normally open, closes APO-NO AC 120V with APO active Instruction Manual DSR digital regulator - rev. 05 - pag. 27...
  • Page 28 3. Powering DI1 The DI1 board must be powered separately : 1) On connector CN1 (terminals 1-2 and 3-4) through the same power as the DSR; for this purpose, the power terminals on CN1 have been duplicated (Fig. 12) 2) On connector CN1 (terminals 1 and 4) through a dedicated source (AC: 40V/15Hz - 270V/72Hz or DC: 40V - 380V) 3) Alternatively, on connector CN5 (terminals 1 and 2) through a completely isolated source in DC (9 –...
  • Page 29 Communication The ComPort menu has 2 functions: 1. Connect/Disconnect activates or deactivates the connection with the slave unit (DSR regulator) 2. Settings opens a window (as shown in figure 14), through which several parameters, concerning communications, can be set: •...
  • Page 30 • • The Upload key unloads the parameters of settings files into the DSR regulator; if the file has been opened with the .dat extension, all of the parameters are updated, if the file has been opened with the .set extension, only the parameters from 10 to 30 are updated, leaving those from 0 to 9 unaltered.
  • Page 31 14 0 0 0 Overall duration [s] Duration of the last event [s] Number of events Alarm code (Table 13) Meaning of the info contained in the file .alr Instruction Manual DSR digital regulator - rev. 05 - pag. 31...
  • Page 32 Fig. 15 DSR Terminal User Interface Fig. 16 Configuration Menu Instruction Manual DSR digital regulator - rev. 05 - pag. 32...
  • Page 33 TABLE 20 : FUNCTIONS OF THE MAIN DSR TERMINAL PANEL OF THE CONFIGURATION MENU Ref. Description of Function Value of parameter to be transmitted to the regulator Address of parameter to be transmitted to the regulator Transmission command Value of parameter requested from regulator (updated following command indicated in 6)
  • Page 34 (DSR regulator) Communication The ComPort menu has 2 functions: 1. Connect activates or deactivates the connection with the slave unit (DSR regulator) 2. Settings opens a window (as shown in figure 17), through which several parameters, concerning communications, can be set: The Port setting determines which serial port it is intended to use for communications (COM1 or ·...
  • Page 35 STATUS : Displays the measured voltage and the measured frequency (registries 36 and 37). ALARMS : Displays active alarms. Cyclic Read : Displays, almost in real time, a single datum requested from slave units (DSR) COMMUNICATION : Displays the status of communication Fig.
  • Page 36 · The key Save allows the operator to save the alarms file with the .alr extension. · The key Done closes the DownLoad Alarm window. The About Menu The About Menu signals the current release of the DSR_Reader software. Instruction Manual DSR digital regulator - rev. 05 - pag. 36...
  • Page 37 Referring to figures B2 and B4, the 9-14 Vdc power source must be insulated. If not, communication troubles can arise as well as damages to the DSR or DI1 units, or even to any other device connected to the system.
  • Page 38 Firmware update Rev. 11, DSR/A rev.04 10/12 Firmware update Rev. 15, added tables of STAB setting rev.05 03/13 Added explanation of the file .alr and EMI filter SDR128/K connection diagram Instruction Manual DSR digital regulator - rev. 05 - pag. 38...
  • Page 39 Mecc Alte SpA Spain India China Via Roma Mecc Alte España S.A. Mecc Alte India PVT LTD Mecc Alte Alternator Haimen LTD 20 – 36051 Creazzo C/ Rio Taibilla, 2 Plot NO: 1, Sanaswadi 755 Nanhai East Rd Vicenza – ITALY Polig.

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