zanardi ATO-28 Série Manuel D'instruction Et De Maintenance page 59

Terminal Name
23 Common
Active protections output
24 A.P.O.
25 Common
Jumper 50/60Hz
26 50/60Hz
27 0EXT
Jumper for remote voltage
control 0÷2,5Vdc
28 JP1
Jumper for remote
29
0EXT
Input remote voltage control
30 PEXT 0÷2,5Vdc or Pext
31 JP2
Pext Jumper
32
±10V
control±10 Vdc
Nota 3) With external EMI filter (3m without EMI filter)
Nota 4) 50·(100%-αHz%) o 60·(100%-αHz%) where αHz% is the position relative to the Hz trimmer or the percentage value of parameter P[21]
Nota 5) Value not to be exceeded. The effective range depends on parameter P[16]
DER1 regulator, on board of new generators, is already calibrated; in case of loose regulators (ie spare parts) or in case of wiring mo-
difications or adjusting, to guarantee its correct working, it must be accurately set .
Basic settings can be done directly on the regulator by its four trimmers (VOLT - STAB - Hz - AMP), the jumper 50/60, JP1, JP2 and
the Pext input. More detailed settings or measures can be done exclusively by software using for example the MeccAlte communica-
tion interface DI1 and the programs DSR_Terminal or DSR_Reader.
Remote control of voltage
The Pext input (terminal 30) and ±10V (terminal 32) allow to obtain remote control of the output voltage by means of a DC signal or
an external potentiometer. The output voltage can be controlled by software as well with the P[19]. The excursion range and gain of
the remote control can be set independently by software despite the output voltage control device system used (potentiometer, VDC
signal or P[19]). If DC voltage is used, it will take effect if it is within the range 0Vdc/2,5Vdc or -10Vdc/+10Vdc, when connected
between terminals 30 and 29 and subjected by jumpers JP1 and JP2; for values exceeding the aforementioned limits (or in the event
of disconnection), two options are possible: not to take the set point of external input and return to regulation to the voltage value set
with the trimmer (if enabled) or with parameter P[19], or keep the minimum (or maximum) value of voltage that can be reached (see
figures 3a and 3b). The second option can be set only with the RAM Voltage CTRL flag in the configuration menu corresponding to
the bit B7 of the configuration word P[10]The setting relative to the Vext input are summarised in table 3.
NOTE: the source of DC voltage must be capable of absorbing at least 2 mA.
In making adjustments it is reccomended not to exceed the nominal value of voltage of the alternator beyond ± 10%
Figure 3a: without saturation of the output voltage
upon reaching the input voltage limits
TABLE 2 : CONNECTOR CN3
Function
Type: Not insulated open collector
Current: 100mA
Voltage: 30V
Max lenght: 30m
Type: Not insulated
Max lenght: 3m
Type: Not insulated
Max lenght: 3m
Type: Not insulated
Max lenght: 3m
Input : 0÷2,5Vdc
or Potentiometer 100K
Type: Not insulated
Max lenght: 3m
Input: ±10Vdc
Relationship between analogical input and output voltage
Specifications
(3)
(3)
Figure 3b: with saturation of the output voltage
upon reaching the input voltage limits
59
Notes
Both activating alarm and delay time
are programmable.
(4)
Selection of underspeed
Short for 0÷2,5Vdc input or
potentiometer
(5)
Regulation: ±10 %
Burden: 0÷1mA (sink)
Short for 0÷2,5Vdc input or
potentiometer
Burden: ±1mA (source/sink)
ATO/E 28 Manual - March 2018 rev. 00