
1 - FUNCTIONAL
This card replace two conventional motorized potentio-
meters :
• One for the remote voltage setting.
• One for power factor or reactive current setting.
- Switch between the two modes is made by the external
P.F regulation order (terminals 33, 34) and switch bet-
ween P.F and KVAR setting is made by the external or-
der (terminals 48,53)
- Each last position is memorized when the control is
switched or when the machine is stopped.
- Jumps (SW1 and SW2) allow the choice between
unipolar or bipolar voltage output and the range is adjusted
by means of potentiometers P02 and P03.
- Jumps SW3 and SW4 must be open for normal opera-
tion and are only used for special applications.
- Speed of all adjustments is controled by potentiometer
P01.
- Two LED's (L1,L2) indicate the command or -
and four other LED's (L3,L4 and L5,L6) indicates the
maximum and minimum position of voltage and P.F
settings
NOTE : When this card fitted, the internal voltage
setting (P05 on sensing card) must be used to give
the center position of the range (if bipolar range) or
the minimum setting in case of unipolar range (idem
for P.F and Kvar internal setting on P.F card). An
external setting potentiometer must not be used, the
settings are made only by mean of push-buttons on
terminals 42, 43, 44.
2 - ADJUSTMENTS
- P1
: Clock speed (total range time)
- P2 : Voltage range value
- P3
: P.F or KVAR range value
- SW1 : Voltage range polarity (0/+ or +/-)
- SW2 : P.F or KVAR range polarity (0/+ or +/-)
3 - INPUTS / OUTPUTS
Flat cable (BUS 64 points)
- 24c
: Cmd lower
- 23a
: Cmd upper
- 16c
: If reference set point input
- 15c
: If reference set point input "AUTO" channel
- 24a
: External P.F regulation order
- 20a
: External P.F or KVAR regulation order
- 13c
: Voltage setting output to PID card
- 20c,21c : P.F or KVAR setting output to P.F card
- 30a
: Maximum position of settings
- 1a,1c
: +15Vdc regulated (Vcc)
- 32a,32c : -15Vdc regulated (Vdd)
- 16a,17c : Common ground (GND or 0V)
31
Digital pot U / P.F
Optional card
AVR
Model R610 / R630
NT1950110/a-01/94 f:1/3