DER1 digital regulator instruction manual - rev. 03 - pag. 16
Figure 3a: without saturation of the output voltage
upon reaching the input voltage limits.
Figure 3b: with saturation of the output voltage
upon reaching the input voltage limits.
TABLE 5: HARDWARE AND SOFTWARE CONFIGURATION OF VOLTAGE REMOTE CONTROL
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With a 100Kohm linear potentiometer connected as shown in figure 4a, you have the full excursion set
with parameter P[16] (with the default value P[16]=4608 there is an excursion of ± 14%); with a 25Kohm
linear potentiometer in series with a 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%).
8. 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 two options can be set with the
RAM Voltage CTRL
flag in the
configuration
menu
corresponding to the bit B7 of the configuration word P[10] (see PARAMETERS AND OPERATIONAL
DATA - Para. 2). The setting relative to the Vext input are summarised in table 5.
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%
Relationship between analogical input and output voltage
Summary of Contents for DER1
Page 10: ...DER1 digital regulator instruction manual rev 03 pag 10 SCC0158 Three phase sensing 75V 150V...
Page 11: ...DER1 digital regulator instruction manual rev 03 pag 11 SCC0159 Three phase sensing 150V 300V...
Page 12: ...DER1 digital regulator instruction manual rev 03 pag 12 SCC0160 Single phase sensing 75V 150V...
Page 13: ...DER1 digital regulator instruction manual rev 03 pag 13 SCC0161 Single phase sensing 150V 300V...
Page 14: ...DER1 digital regulator instruction manual rev 03 pag 14 SCC0202 Single phase sensing 300V 600V...
