Products/DS-32 Main Board

1 .DS-32 RTU Main Board Overview 1 2 3 4 5 Next> CPU, Buses and Memory   32- bit HCMOS Motorola 68332 @ 20 MHz 1 MegaBytes EEPROM 1 MegaBytes Battery backed up RAM with 7 years of shelf life. Battery can be changed with live power on for uninterrupted operations Real Time Calendar Clock   Hardware Calendar Clock with year, month, day of month, day of week, hour, minute and second. Optional high accuracy, temperature compensated crystal oscillator, 20.0000 MHz +/- 2 PPM at -20 to 70 degrees Celsius. Battery backed up Real Time Calendar Clock with 7 years of shelf life. Battery can be changed with live power on for uninterrupted operations. Microprocessor Supervisor   Watchdog Timer / Reset Power Monitor Power Switching functions Watchdog relay: For system malfunction annunciator, indication and control overrides Communications   RS232 ports: 4 user ports, 1 jumper selectable maintenance or user port Baud Rate: 300 - 38.4 K Sync/Async: 4 Sync/Async ports, 1 Async port Hand Shaking signals: DCD, RTS, CTS Specifications: Meet all EIA/TIA-232-E and V.28 Specifications Indicators: Transmit and Receive indicators for all user ports Multiple Protocol support Redundant Communication Power Requirement and On-board Power Supplies   2 isolated unregulated 12 VDC (1 Amp each) or 24 VDC (1/2 Amp each), 1 for electronics, 1 for Digital Input Excitation. Switching mode, +5 VDC for digital electronic, +5 VDC, -12 VDC and +12 VDC for analog electronic System Status Indicators   Power On indicator Performance indicator System normal indicator Control malfunction indicator RTU Ambient Temperature   Temperature Sensor provided Floating Point Math Support   Optional MC68882 Floating-point math coprocessor 16 Digital Inputs   16 Optical Isolated with 12 VDC or 24 VDC excitation Input indicator on each digital input driven by input current Isolation Rating: 1500 Vrms (Point Input to Logic) Hardware Digital Filter: Programmable 2-15 ms debounce timer, transition detection and interrupt capability Accumulator: Any digital input can be configured as an Accumulator with Maximum rate of 150Hz Types of point: Form A, Form C and BCD SOE: Any Digital Input Point can be Configured as SOE with accuracy of 1 ms, Chatter Filter is available for preventing malfunctioning inputs from filling up the SOE buffer. DS-32 RTU Overview   16 Bipolar, Differential input @ +/- 5V, +/- 1V with one shield for every 2 points AC Inputs: Group of 8 AI points can be configured as AC inputs, Vrms, period and phase angle relative to previous point are calculated Accuracy: +/- 0.05% (DC voltage input) Temperature Coefficient: +/-5PPM per degree Celsius Resolution: 15 bit plus sign Auto Self Calibration Reference Points: -5.000VDC, 0VDC and +5.000VDC Dynamic Range of Converter: 120% of Normalized Full Scale inputs Multiplexers: Uses high-voltage, fault-protected differential solid state analog multiplexers Input Impedance: 1 Tera Ohm (Voltage Input) CMRR (@0-60Hz): 90 dB NMRR (@60Hz) 60 dB Analog input self calibration, Auto-correction of gain and offset errors. 16 Digital Outputs   16 relay outputs Output indicator on each digital output Control Output Configurations: Isolated Discrete control output relays, Trip/Close, Raise/Lower, Set/Reset, Pattern Controls, Relay fail to OFF, Relay fail to last commanded position Control Security: Single component failure protection, Master Trip/Close relays, relay driver input status check back for point selection confirmation, Double point select-before-operate Remote/Local Switch for enable/disable controls Either a Malfunction of the system (detected by the watchdog), or the failure of a point selection confirmation shuts down the control module Control Functions: ON/OFF, Timed ON/OFF (Pulse Duration of 1 ms resolution), Variable duty cycle pulse output with variable repetition rate (Pulse Train of 1 to 254 or continuous, 1 ms resolution), Pattern controls (a group of contiguous outputs) Contact Rating: 1 Amp at 110 VDC Relay output DB37 socket for ease of interposing relay connections 3 High Speed Accumulators   3 optically isolated inputs for Turbine, Generator and Motor RPM measurements Maximum input: 20 kHz Isolated rating: 1500 Vrms (Point Input to Logic) Operating Environment and Physical Dimension   Temperature Range: -30 to +70 degrees Celsius Humidity: < 95%, non-condensing 19.0 x 7.0 inches for 19" standard rack mount or panel mount Run Time Self Diagnostic and Integrity Design   Each task is assigned its own memory such that inadvertent writing to other task's memory is monitored and prevented. This proprietary design assists in identifying cross task problems and ensures that malfunction of a task would not affect the other tasks Redundancy with Active/Standby Language Support   High level language "C" Assembler DynaView Maintenance Facility   User friendly, intuitive, WIN32 based maintenance software for system diagnostics, troubleshooting, and manual controls in an emergency situation. It also supports Configuration and Software Program downloading to DS-32 RTU. A built-in protocol analyzer is also available for communication troubleshooting. Configuration Facility   User friendly, intuitive, window based system Configuration. RTU Replacement Application   A proprietary design that facilitates seamless transfer of existing RTU to new DS-32 RTU. The following briefly describes the features: The DS-32 RTU communicates with the existing RTU as the submaster to the existing RTU The Master can query the existing RTU via the DS-32 RTU As each point is being transferred to the DS-32 RTU, the corresponding database for the point comes from the DS-32 RTU, the transfer process can be repeated for every point until all points are transferred to the DS-32 RTU The application can be applied to 2 non DS-32 RTU, that is the DS-32 RTU communicates with the existing and the new RTUs as the submaster to both RTUs, the master can query the existing RTU via the DS-32 RTU, as each point is being transferred to the new RTU, the corresponding database for the point comes from the new RT PID Process Control   Industrial standard PID control with following features: Direct or Reverse acting control Interactive or non-interactive PID equations Manual mode operation with bumpless transfer Output limiting with anti-reset windup Feedforward output biasing Gain scheduling Input scaling in engineering units Deviation alarming Control Deadbanding Adjustable PID update rate Process Variable tracking or non-tracking in manual to automatic transition Setpoint limiting Output types of analog, pulse duration and pulse trains Emergency shutdown with predefined output value for analog output type Window based graphical control face plate and trending display for ease of loop tuning Event Driven Control Operator (EDCO)   EDCO is a group of software components that reside in the PC and Dynatrol DS-32 RTU. EDCO is specially designed for time critical process control applications. It facilitates logic interlock, arithmetic calculations and sequential controls. Graphical User Friendly Interface Graphical User Friendly Interface   EDCO Graphical Interface resides in the PC. It provides the tools for user to implement, edit and trouble shoot the control algorithm. It presents the algorithm in a graphical diagram with control icons. EDCO Graphical Interface provides pictorial view of the control algorithm. With drag and drop control icons, complex control algorithm can be easily implemented and modified. Signals and Controls relationships can be easily visualized. With real time display, states and values of signals and controls are displayed in real time. This feature enables the user to easily trouble shoot the control algorithm. Unlike ladder diagrams, which signals and controls cannot be readily correlated. If signals are out of page bound, it is difficult to visualize the relationship of the signals involved. EDCO Graphical Interface presents the control icons with signal paths and control paths connected between control icons, therefore user is able to visually correlate the signals and controls involved. Efficient Execution for Time Critical Process Control Applications   Most of the control software, such as PLC ladder diagram style of software, the CPU processes all the rungs of the ladder diagram at every loop time. Even the inputs have not been changed; the CPU processes all the rungs regardless. If the rungs are not arranged sequentially according to the logic, that is the inputs of the rung come from the outputs of the rungs following the present rung, the control outputs may take many loop times to be affected. For feedback controls, the arrangement of rungs sequentially according to the logic is not possible. For this type of controls, the control outputs will take many loop times to be affected. EDCO implements the processing very differently. When there is a change of input, EDCO will process all the operators that are affected by this change of input. That is EDCO only wakes up when there is a change to one of the inputs and only the operators that are affected by this change of input will be processed. With this feature, EDCO is very efficient and able to perform time critical process controls. Intelligent Feedback Oscillation Detection   In process control applications, feedback control is very common. That is the signals from the results of some operators are fed back to the inputs of the operators. Feedback can cause digital logic to be flip-flopping; that is oscillating between ON/OFF states. For analog signals, feedback can cause output oscillation or saturation to certain values. Using electronic components to implement the controls such as AND, OR gates and Amplifiers as analog adder or multiplier, the undesirable results (oscillation/saturation) usually localized to the affected portion of the control. However, in microprocessor based controls, the undesirable results could render the control inoperable because excessive use of CPU time. Undesirable oscillation or saturation is of little use in practical control applications. EDCO has built in algorithm to detect oscillation or saturation. When oscillation or saturation is detected, EDCO logs the warning messages indicating which operators have been processed many times in the single change of input. With the warning messages, undesirable oscillation or saturation can be easily identified and eliminated. Overview 1 2 3 4 5 Next>

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