Green Power Solutions srl
Via Greto di Cornigliano 6R - 16152 Genova , Italy
Phone: +39-010-659 1869
Fax: +39-010-659 1870
Web: www.gpsemi.it
E-mail: info@gpsemi.it
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
V
AC (RMS)
V
INS (RMS)
V
COM
P
SUP
T
A
T
S
Maximum RMS mains voltage
Description
Conditions
Sine waveform T = 1min
Value
690 V
2500 V
Insulation voltage between mains and control sections
Analog reference command
Power consumption
Operating temperature
Storage temperature
0 to +12
V
At full load
25
W
-10 to 55
°C
-65 to 65
°C
ELECTRICAL CHARACTERISTICS
Parameter
Description
PS
V
COM
α
D
f
α
T
START
T
STOP
I
GM
dI
G
/dt
V
GM0
I
G
V
G0
Power supply
Analog voltage type reference command
Gate delay angle
Gate delay angle command response frequency
Soft start range
Soft stop range
Initial hard trigger gate current peak
First pulse gate current derivative
First pulse open circuit gate voltage
Sustaining short circuit gate current
Open circuit gate voltage
Conditions
Value
2x12V
AC
0.6A +
220 V
AC
0 to 5
V
0.5 to 179.5
deg
300
Hz
0.05 to 30
s
0.05 to 30
s
With 1 ohm load
resistance and 3:1 pulse
transformers
2
A
>0.8
A/us
15
V
With 1 ohm load
resistance and 3:1 pulse
transformers
0.5
A
7
V
SCR CONTROL BOARD
GSCB6
Block diagram
2 x 12 V
AC
Voltage
Supervisor
Phase
Loss
RESET
220 V
AC
Phase
Loss
Logic
Local
Supply
Synchro
Unit
Main
Supply
7
To auxiliary
firing board
Sync
V
RS
,
V
ST
,
V
TR
3
3
DSP
12
Output
Logic
6
6
6
Digital Input Unit
Inhibit 1
Inhibit 2
V/I Control
Encoder
4
Input
Logic
Encoder
Interface
6
Output Buffer
Pulse
Transformer
To
SCRs
2
5
MAX
MIN
RS232
Serial
Interface
RS485
T
START
T
STOP
CAN
3
V
COM
, I
REF
, V
REF
I
DC
, V
DC
5
Amplifier
Lowpass filter
Analog Input
Unit
To
Communication
2
Board
5
I
DC
From mains
current
transformers
3
Amplifier
Lowpass filter
+
-
Protection
Unit
I
MAX
/
V
MAX
Adjust
Unit
SCR FIRING
BOARD
Blocks description
Unit
Synchro
Digital Input
Analog Input
Protection
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
Adjust
Output buffer
Document GSCB6T002
RF/Wirelessly
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