GPSEMI GSCB6 Scr control board Datasheet

Phone: +39-010-659 1869
Fax: +39-010-659 1870
Web: www.gpsemi.it
E-mail: [email protected]
Green Power Solutions srl
Via Greto di Cornigliano 6R - 16152 Genova , Italy
GSCB6
SCR CONTROL BOARD
Full insulation from the power circuit
Insensitive to the input phase sequence
Phase loss inhibit
Soft-start and soft-stop functions
Linear firing delay angle generation
Voltage and current control loops
Optional Aux. boards for communication and firing
External pulse transformers
LINE VOLTAGE UP TO 690V
The board employs an industry-standard fixed-point 16bit DSP controller design and operates either as digital firing gate board
or as stand-alone digital controller board. An auxiliary firing board is available to extend the drive capability up to 12 SCRs.The
gate angle delay generation is fully digital and accepts analog control inputs. The board implements load current control loop
and/or load voltage control loop. It accepts current feedback either from Current Transformer or insulated DC current feedback
(0-5V or 0-10 V). Isolated RS485 and CAN interfaces are also available as optional using an auxiliary communication board.
MAXIMUM RATINGS
Parameter
Description
Conditions
Value
VAC (RMS)
Maximum RMS mains voltage
VINS (RMS)
Insulation voltage between mains and control sections
VCOM
Analog reference command
PSUP
Power consumption
TA
Operating temperature
-10 to 55 °C
TS
Storage temperature
-65 to 65 °C
ELECTRICAL CHARACTERISTICS
Parameter
Description
PS
Power supply
690 V
Sine waveform T = 1min
2500 V
0 to +12 V
25 W
At full load
Conditions
Value
2x12VAC 0.6A +
220 VAC
0 to 5 V
VCOM
Analog voltage type reference command
αD
Gate delay angle
fα
Gate delay angle command response frequency
TSTART
Soft start range
0.05 to 30 s
TSTOP
Soft stop range
0.05 to 30 s
IGM
Initial hard trigger gate current peak
dIG/dt
First pulse gate current derivative
VGM0
First pulse open circuit gate voltage
IG
Sustaining short circuit gate current
VG0
Open circuit gate voltage
0.5 to 179.5 deg
300 Hz
With 1 ohm load
resistance and 3:1 pulse
transformers
2A
>0.8 A/us
15 V
With 1 ohm load
resistance and 3:1 pulse
transformers
0.5 A
7V
GSCB6
SCR CONTROL BOARD
Block diagram
2 x 12 VAC
Local
Supply
220 VAC
Voltage
Supervisor
Synchro
Unit
Sync
VRS, VST, VTR
3
7
RESET
Phase
Loss
Phase
Loss
Logic
Main
Supply
12
DSP
3
Output
Logic
6
6
6
Pulse
Transformer
Output Buffer
Digital Input Unit
To auxiliary
firing board
Inhibit 1
Inhibit 2
V/I Control
Encoder
2
Input
Logic
5
4
5
Amplifier
Lowpass filter
Analog Input
Unit
3
Amplifier
Lowpass filter
Blocks description
Unit
Synchro
Digital Input
Analog Input
Protection
Adjust
Output buffer
Document GSCB6T002
T START
T STOP
RS232
Serial
Interface
RS485
3
CAN
2
5
IDC
From mains
current
transformers
MIN
Encoder
Interface
6
VCOM, IREF, VREF
IDC, VDC
MAX
+
Protection
Unit
I MAX / V MAX
Adjust
Unit
SCR FIRING
BOARD
Description
Provides opto insulated signal for mains
synchronisation
Defines control variable (V or I), acquires
inhibit signals, provides encoder input
Provides fitered input for reference and
feedback signals
Generates overcurrent fault signal.
Current trip adjustable by means of a
trimmer.
Configuration of maximum and minimum
delay angle, start and stop time,
manual adjusting of output voltage (current)
Gate pulses generation and shaping
To
Communication
Board
To
SCRs
SCR CONTROL BOARD
Document GSCB6T002
GSCB6
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