OZSCR-2000
Features
Configuration and operating parameters can easily be changed in the field using the RS485 Modbus interface and supplied Graphical User Interface (GUI). Systems operating from AC mains voltages up to 1000 VAC are supported using the integrated, transformer-isolated “picket fence” firing circuitry. Dedicated high-voltage and current measurement interfaces are provided to implement closed-loop digital control of both current and voltage.
The single board OZSCR-2000 is designed to address numerous SCR power system challenges, allowing fast and economical product development. With the ability to configure every system parameter, implementation possibilities are endless. Pre-designed control algorithms can quickly be selected using a PC-based GUI. A digital PLL synchronizes to the AC line voltage and can quickly report and respond to abnormal line conditions. Intelligent fault handling minimizes downtime and protects the system from damage. Field updates are fast and easy using the RS485 bootloader. For complex systems requiring control of more than six SCRs, multiple OZSCR-2000 boards can easily be combined using the expansion interface.
Key features
- 100% software configurable over serial port
- Integrated closed-loop voltage & current feedback
- 110-1000 VAC, 10-500 Hz line interface
- Field scalable 0-10V & 0-20 mA control interface
- Software-selectable direct cathode or low-voltage line synch inputs
- Software-configurable programmable gain amplifier (PGA) for line sense
- Software-configurable PGA for DC voltage sense
- Modbus RTU RS485 digital control interface
- Digital phase locked loop (PLL)
- Cathode line synch as well as low-voltage AC line synch inputs
- Zero cross, phase angle, and burst control modes
- Soft start/stop, fast inhibit
- Free Windows configuration GUI
- Universal input power
- Direct, Drop-in Replacement for OZSCR-1000
Typical applications
- Single Phase AC Switch
- Single Phase Rectifiers
- Independent AC Switches
- 3 Phase AC Switch
- 6 Pulse Rectifier
- 4 Quadrant Rectifiers
Specifications
Maximum Ratings
Operating Temperature
-40°C to 85°C
Storage Temperature
-65°C to 85°C
AC Mains Voltage
1,000 VAC
Pulse Transformer HiPot (VAC) - 2 sec
5,400Vrms
Control Voltage
2 wire
• Universal AC (OZSCR-2000)
100-240 VAC / 47-63 Hz
• DC Bias Voltage (OZSCR-2100)
18-32 VDC
Electrical Characteristics
Analog Command Interface
Voltage Input
0-10 VDC
Current Input
0-20 mA
Delay Angle Range
0-180 deg
Phase Reference Angle Bias
0 or 30 deg
Low Voltage Line Sense
+/-10 V
Soft Start Range
1-65,535 deg/sec
Soft Stop Range
1-65,535 deg/sec
Gate Drive
• Initial Short Circuit Gate Current
3.0 A
• Sustaining Gate Current
0.75 A
• Open Circuit Voltage
15 V
• Gate Pulse Width
User Configurable
• PCB Creepage
UL480, VDE0100
Mechanical Specifications
Printed Circuit Board Dimensions
6" x 7.5"
