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Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019
Chapter 1
Product Overview
Hardware Description
The following sections contain descriptions of system components and system
operation. Each section will be described to give the user an understanding of the
SMC-50 to facilitate operation and maintenance of the system. Refer to
, Typical SMC-50 Power System.
Power Module
The controller consists of three power modules, one for each phase. Each power
module consists of incoming and outgoing terminals for cables, SCRs, heatsink
and clamp assembly. The SCRs are connected in inverse parallel (and in series for
12- or 18-SCR assemblies) to form a three-phase, AC line controller
configuration.
Each power module includes a snubber circuit to limit the rate of rise in voltage
across each SCR pair. The module also includes patented current loop gate driver
circuits which derive their power primarily from the snubber circuit.
Voltage sharing resistors are connected across each SCR pair to provide static
voltage balance for series-connected SCRs. These resistors are tapped to provide
a reference for overvoltage protection circuitry on the gate driver board.
A voltage sensing board is used to reduce the line-side and load-side voltages to
lower levels that can be measured by the SMC-50 control module.
Current Loop Gate Driver (CLGD) Board
This board provides the turn-on capability for SCR devices. The board also
provides optical fiber isolation between itself and the gating source logic. It is
primarily powered by recovering energy from the snubber circuit, so it is fully
isolated from the control and logic circuits. The board also receives short-term
power from the current loop power supply.
The SMC-50 has three heatsinks fitted with a thermistor to monitor
temperature rise. The circuitry on the gate driver board accepts the thermistor,
and drives a fiber-optic cable if the temperature is below the setpoint (85 °C). If
the temperature rises above the setpoint, the driver is turned off, and the
SMC-50 is signaled to stop gating and initiate a temperature fault.
Содержание SMC-50
Страница 10: ...10 Rockwell Automation Publication 1560F UM001A EN P June 2019 Table of Contents Notes ...
Страница 12: ...12 Rockwell Automation Publication 1560F UM001A EN P June 2019 Preface Notes ...
Страница 68: ...68 Rockwell Automation Publication 1560F UM001A EN P June 2019 Chapter 2 Installation Notes ...
Страница 120: ...120 Rockwell Automation Publication 1560F UM001A EN P June 2019 Chapter 4 Programming Notes ...
Страница 130: ...130 Rockwell Automation Publication 1560F UM001A EN P June 2019 Chapter 5 Metering Notes ...
Страница 134: ...134 Rockwell Automation Publication 1560F UM001A EN P June 2019 Chapter 6 Optional HIM Operation Notes ...
Страница 144: ...144 Rockwell Automation Publication 1560F UM001A EN P June 2019 Chapter 7 Communications Notes ...
Страница 156: ...156 Rockwell Automation Publication 1560F UM001A EN P June 2019 Chapter 8 Diagnostics Notes ...
Страница 198: ...198 Rockwell Automation Publication 1560F UM001A EN P June 2019 Chapter 10 Maintenance Notes ...
Страница 240: ...240 Rockwell Automation Publication 1560F UM001A EN P June 2019 Appendix A Parameter Information Notes ...
Страница 242: ...242 Rockwell Automation Publication 1560F UM001A EN P June 2019 Appendix B Controller Duty Cycle Ratings Notes ...
Страница 250: ...250 Rockwell Automation Publication 1560F UM001A EN P June 2019 Appendix C 1560F and 1562F Relay Control Notes ...
Страница 280: ...280 Rockwell Automation Publication 1560F UM001A EN P June 2019 Appendix G Using DeviceLogix Notes ...
Страница 284: ...284 Rockwell Automation Publication 1560F UM001A EN P June 2019 Appendix H Spare Parts Notes ...
Страница 286: ...286 Rockwell Automation Publication 1560F UM001A EN P June 2019 Appendix I Accessories Notes ...
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