1 - DESCRIPTION
This card is used when the P.F or KVAR regulation is
wanted not at the generator terminals but at the mains
input. For this a P.F or KVAR sensor with 4-20mA output
is necessary and it must be located at the place where
the regulation must be made.
2 - FONCTIONAL
This card elaborates from setting informations and 4-
20mA signal image of P.F (or KVAR) of the mains, the
errorvoltage dending to the PID of the PID card.
- The error signal have an ajustable gain and can be in-
versed depending of the 4-20mA sensor output.
- This kind of operation is indicated by the LED "L3" and
by a contact (potential free) on the front connector.
- This operation is selected by mean of a contact on front
connectort and will be active on coupling when contact
between terminals 33, 34 of main terminals will be closed.
If the contact on front connector remains open, the regu-
lation (P.For KVAR) will be made at the generator output,
if it is closed, this is the 4-20mA information wich is regu-
late function of the internal settings (P2 or channel 2 4-
20mA) or/and external by the front connector.
- If during operation, the measuring 4-20mA signal
deseappears, control is automatically return to regulation
on the generator output side and this failure is indicated
by LED L1 ou L2 and by a contact on front connector.
- A second channel can be used as set point of the first
channel or as a remote adjustment of voltage, P.F or
KVAR on generator side. As on channel 1 if the 4-20mA
deseappears, output is inhibited and indicated by LED
L2.
- A field current limitation is given, active when a contact
(front connector) is closed and indicated by LED L4. The
limitatio is adjusted by P7 (Limit 2 set) and can be set
between a maximum value preset by P7 on driver card
and a minimum value preset by P8 on driver card.
- An signaling contact on the front connector gives (if
they are used) the indication that one or more of the digi-
tal potentiometers are at maximum position .
3 - ADJUSTMENTS
Potentiometers
- P1 : Channel 1 range adjustment
- P2 : Reference set point channel 1
- P3 : Gain channel 1
- P4 : Channel 2 range adjustment
- P5 : Reference set point channel 2
- P6 : Gain channel 2
- P7 : Limit 2l adjustment
Jumpers - CV1 A
: Channel 1 used
- CV1 B : Channel 1 not used
- CV2 A : Channel 1 used
- CV2 B : Channel 2 not used
- CV3 A : Non inverting error channel 1
- CV3 B : Inverting error channel 1
- CV4 A : Non inverting error channel 2
- CV4 B : Inverting error channel 2
- CV5 A : Channel 1 in 4-20mA regulation channel 1
- CV5 B : Channel 1 in voltage setting
- CV5 C : Channel 1 in generator P.F setting
- CV5 D : Channel 1 in generator KVAR setting
- CV6 A : Channel 2 in 4-20mA regulation channel 2
- CV6 B : Channel 2 in voltage setting
- CV6 C : Channel 2 in generator P.F setting
- CV6 D : Channel 2 in generator KVAR setting
- CV6 E : Channel 2 in channel 1 setting
4 - INPUTS / OUTPUTS
Flat cable (BUS 64points)
- 12c
: Error output to PID
- 21a
: Output to voltage setting
- 20c
: Output to generator P.F setting
- 21c
: Output to generator KVAR setting
- 30a, c
: Digital pot at maximum position
- 1a,1c
: 15Vdc regulated (Vcc)
- 32a,32c : Supply -15Vdc regulated (Vdd)
- 16a,17c : Common ground
- 23a
: Cmd + U or + P.F
- 24c
: Cmd - U or - P.F
- 14c
: Output of generator side P.F card
- 24a
: P.F regulation order
- 26c
: Limitation 2 output to driver card
Front connector (DB25 points)
- 13
: + 4-20mA input channel 1
- 25
: 4-20mA output channel 1
- 20
: 12V to external setting potentiometer ch 1
- 12
: External setting potentiometer cursor ch 1
- 24
: Ground to external setting potentiometer
- 11
: + 4-20mA input channel 2
- 23
: 4-20mA output channel 2
- 20
: 12V to external setting potentiometer (ch 2)
- 10
: External setting potentiometer cursor ch 2
- 22
: Ground to external setting potentiomete
- 9
: 4-20mA failure (NO)
- 21
: 4-20mA failure (NF)
- 8
: 4-20mA failure (Commun)
- 3
: Digital pot at max position (NO)
- 15
: Digital pot at max position (NF)
- 2
: Digital pot at max position (Common)
- 7,19
: Contact regulation ch 1 active (mains P.F)
- 14,1
: Contact limitation 2 active
LED
- L1, L2
: 4-20mA failure channel 1 or 2
- L3
: Channel 1 active
- L4
: Ifield limitation 2 active
40
Mains P.F Regulation
Optional card
AVR
Model R610 / R630
NT1950120/a-04/94 f:1/3
