Page 1 CONTROLLING OF REGULATOR ALARMS pag. 30 Alarm signals with the indicator lights pag. 30 Description of alarms pag. 31 APO Output pag. 32 Board operation time pag. 32 APPENDIX p ag. 33 DER1 digital regulator instruction manual - rev. 05 - pag. 2...
Page 2 Two versions of the DER 1 and DER 1/A regulators are available; the first one is optimised for Mecc Alte Series 3 to 38 alternators, while the second is optimised for Mecc Alte series 40, 43 and 46 alternators; the two versions differ primarily in the default parameters.
Page 3 • Memorization of the regulator operation time • USB communications interface (with optional USB2DxR module) WARNING : Operation of the DER1 is not specified below 12 Hz. NOTE (2) : with EMI external filter SDR 128/K, see Fig.4 (3m without EMI filter) NOTE (6) : Starting from rev.
Page 4 Hz% 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 DER1 digital regulator instruction manual - rev. 05 - pag. 5...
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 An error in connection may have deadly consequences for the unit. Carefully check to make sure that all connections are precise and in accordance with the attached drawings, before turning on the power. DER1 digital regulator instruction manual - rev. 05 - pag. 7...
Page 7 0,5 mm² for signal cables on terminals from 23 to 32 4. DER1 connections The DER1 regulator has 3 differential inputs, with 2 selectable scales for each of them (see fig. 1):  scale "H" for voltages between 75V and 150V ...
Page 8 4.2 DER1 connections for typical applications Drawings SCC158/04, SCC159/04, SCC160/02, SCC161/02 show DER1 regulator connections for typical applications. In case of sensing 75V-150V, with half-phase reference the typical drawing for three-phase connection is SCC158/04, while for single phase it is SCC160/02.
Page 9 SCC0158/04: Three phase sensing 75V-150V DER1 digital regulator instruction manual - rev. 05 - pag. 10...
Page 10 SCC0159/04: Three phase sensing 150V-300V DER1 digital regulator instruction manual - rev. 05 - pag. 11...
Page 11 SCC0160/02: Single phase sensing 75V-150V DER1 digital regulator instruction manual - rev. 05 - pag. 12...
Page 12 SCC0161/02: Single phase sensing 150V-300V DER1 digital regulator instruction manual - rev. 05 - pag. 13...
Page 13 SCC0202/00: Single phase sensing 300V-600V DER1 digital regulator instruction manual - rev. 05 - pag. 14...
Page 14 SCC0203/00: Single phase sensing 300V-600V (generator in threephase ZIG-ZAG connection) DER1 digital regulator instruction manual - rev. 05 - pag. 15...
Page 15 3.9Kohm resistor, connected as shown in figure 4b, the effect of the external potentiometer is cut in half (with the default value P[16]=4608 there is an excursion of approximately ± 7%). DER1 digital regulator instruction manual - rev. 05 - pag. 16...
Page 16 (see fig. 6). For the communication, the regulator implements a subsystem of the ModBus standard; the DER1- USB2DxR system performs a “slave” operation the address of which is stored in the DER1 EEPROM and is set during configuration.
Page 17 USB connections (with module USB2DxR). Two versions of the regulator are available, called DER1 and DER1/A; they differ primarily in the default value of several parameters. Table 6 shows a complete list of the parameters that can be set, which define all the operational conditions of the regulator.
Page 18 Alternatively, the DER1 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 7, corresponding to the functions it is desired t enable.
Page 19 DER1 at that time; for example, if the regulator is connected with three phase sensing, even if bit B6 of the configuration word is set on 0 (automatic recognition of single phase –...
Page 20 Delay=1280ms (P[8]=64) and Excitation limit=50% (P[9]=16384); for low power alternators of the ECP3 series, the effects of a reduction of both the duration and limitation of the current may be experimented, such as Delay=320ms (P[8]=16) and Excitation limit=3,72% (P[9]=4096). DER1 digital regulator instruction manual - rev. 05 - pag. 21...
Page 21 P[11] parameter. The value of the integral gain K depends on the values of parameters P[12] and P[13] and, only for the standard DER1 (grey box) with the STAB trimmer ena- bled, even on the 50/60Hz setting.
Page 22 ; at 60Hz the transformation function is Fcig , different from that at 50Hz, (fig. 8a); in the other versions of the DER1 (fig. 8b), for example DER1/A (blue box), or if the STAB trimmer is disabled (fig. 8c), not only is there a difference between the integral value at 50Hz and at 60Hz, but even the value of...
Page 23 TABLE 12 ECO/ECP SERIES: RECOMMENDED SETTINGS OF DER1 STAB TRIMMER Fw Rel. ≥ 15 Alternator Nominal frequency = 50Hz Singlephase Threephase Type Pole [KVA] STAB L[33] L[53] STAB L[33] L[53] ECO38-1SN/4 n.d. n.d. n.d. 16384 8192 ECO38-2SN/4 n.d. n.d. n.d.
Page 24 3. EXCITATION OVERCURRENT 3.1 Description The DER1 regulator is equipped with an excitation (main rotor) winding temperature estimator. An estimate of the temperature (in relative values) is available in real time (and it can be read) in location 45; in the lower part of the main window of the DxR terminal software there is a graphic representation of location 45.
Page 25 Activation of the function with voltage proportionate to the frequency is signalled by activation of alarm 6 (visible from the DER1 Terminal control panel and due to a change in the flashing indicator light). Parameter P[21](equivalent to the Hz trimmer) sets the Underspeed protection intervention threshold; if this is set on 16384, the protection cuts in at 45 Hz (if the 50/60 jumper and 50/60 flag in the Settings/ UFLO&LAM menu are not present) or at 54 Hz (if the 50/60 jumper is enabled or the 50/60 flag is active in...
Page 26 P21=32767 @ P23=9000 P23=32767 P21=0 @ P23=9000 P26=0 P23=15000 P26=32767 P23=0 P26=-32767 fig. 10a: Underspeed and Overspeed protection, fig. 10b: Voltage slope in underspeed protection, P[23] P[21] and P[26] DER1 digital regulator instruction manual - rev. 05 - pag. 27...
Page 27 Vaux is considered proportionate to Vout and the proportional coefficient is determined by parameter P[14]. If the DER1 is powered directly by the regulated phase, parameter 14 should be set on 0; in case it is powered by auxiliary winding or PMG, the voltage (Vaux) must be measured, in no-load conditions and with output voltage regulated on the nominal value (Vout);...
Page 28 2 seconds; it flashes differently in the event of intervention or alarm, as indicated in fig. 11. LED OFF LED ON LED ON CHECKSUM SHORT CIRCUIT Hz or O.S. AMP and (Hz or O.S.) STOP fig.11 t [sec] Allarm intervention DER1 digital regulator instruction manual - rev. 05 - pag. 29...
Page 29 (parameter P[27]), A-08 is activated. The alarm is inhibited during transients. NOTE: Though the voltage is continuously regulated, the DER1 will switch off if the frequency goes under 20Hz. To reset the system it is necessary to stop completely the alternator.
Page 30 For this procedure please refer to the ''DownLoad Alarm'' function of the Upload/Download Menu of DxR Ter- minal Software, see Technical guide “Interface communication USB2DxR”. NOTE (1): starting from rev.18 of the Firmware NOTE (2): Open for firmware revisions lower than 18 DER1 digital regulator instruction manual - rev. 05 - pag. 31...
Page 31 Given that some parts of the DER1 which work at high voltage are not isolated, for the safety of the operator, it is necessary for the power source to be isolated from the electrical grid, for instance by a transformer.
Page 32 Modified drawings SCC0158 and SCC0159 rev.04 05/15 Firmware update rev. 19, added connection scheme filter EMI182/K, cancelled : DI1, software DSR Terminal rev.05 07/15 Corrections at pages 9, 18 and 19 . DER1 digital regulator instruction manual - rev. 05 - pag. 33...

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