774x Series IO Singer Replacement
Singer I/O Replacement
TMI has been providing I/O systems for the nuclear simulation industry for nearly 20 years. TMI offers many types of I/O systems as replacements for simulators. TMI has direct replacements for Singer (all versions)/EAI, CPI and RTP I/O systems, CAE and VMIC. TMI’s direct replacement I/O systems reduce the workload when upgrading as well as eliminates the need for cable adapters.
TMI has become the leader in the U.S.A. for I/O systems within the nuclear simulation market, in fact TMI delivers more I/O systems then all other vendors combined. TMI’s reputation has grown worldwide and as such, has been supplying I/O systems to Europe, Asia and Africa. TMI’s products are used predominately in the nuclear simulation industry and also have been used in fossil simulation. TMI’s focus is devoted to the simulation industry.
The 774x I/O system is an Ethernet based distributed I/O system. It has an industry standard TCP/IP protocol. Each Ethernet Controller can handle over 3,000 I/O points. All the chassis are packaged like the original Singer version.
Ethernet Sub Controller Chassis
At the heart of the I/O system is the 7742-4 Ethernet Sub Controller. This Ethernet based device connects directly to the simulator computer and is responsible for the direct communication and control of all the I/O chassis in its string. The Ethernet Sub Controller replaces the original Sub Controller and communicates with the DO, RO/LO, DI and Analog Chassis. A maintenance communication port is provided for running on line and off line diagnostics. The Ethernet Controller can directly drive 8 DO, RO/LO, DI and 6 Analog Chassis.
The 7743-x DO Chassis are 256 bits. The DO Chassis is typically meant to drive low level TTL signals. The driver chips are socketed for ease of repair. All outputs mate directly with the original connector.
RO/LO Chassis WITH INTELLIGENT DRIVERS
The 7744-x RO/LO Chassis are 256 bits. These chassis use intelligent driver chips. These provide a ground (low level) to the I/O point, typically used to drive lamps and relays. These drivers sense over current and over temperature and reduce their output so they do not exceed the components parameters, in other words when they sense an out of tolerance condition they reduce their output current and protect themselves. They can directly drive LED’s without ghosting. All outputs mate directly with the original connector.
The 7745-x DI Chassis is 288 bits and senses a low level to go to the true state. The inputs are internally pulled up to 15 volts and when driven below 5 volts the input is active. The inputs are protected to +/-36 volts. All outputs mate directly with the original connector.
The 7746-x Analog Chassis are 3U sized card cages which contain both AO and AI cards. Each card cage can have up to 8 AO or AI cards. The AO cards have 16 outputs each and the AI has 32 inputs each, this is twice as dense as the original version. The analog output range is -10 to 10 volts. The analog input is also a -10 to 10 volt range. All outputs mate directly with the original connector.
I/O Power Supply
The 7766-3 is a 500 watt 24 volt AC/DC power supply chassis. The input voltage is 85 to 264VAC. The input contains an inline circuit breaker, line filter and on/off switch. The power supply is housed in a 3” x 7” x 19” rack mount enclosure. This distributed power brings 24 volts to all chassis. The chassis uses a DC/DC converter to generate the voltage required locally. This allows a single AC power supply to provide power for all the IO hardware minimizing the number of power supplies required.
Hardware Offline tests
TMI I/O systems provide the user with both online and offline tests. These tests allow the hardware personal to locate problems quickly. A DORT test is self contained in the Ethernet Controller. It does not require a PC to run. This is useful to verify the simulator as a whole or a section of panel. DORT tests consist of Lamp Step, AO Sweep, AO Set, AO Step, DI Test and Synchroscope Test. The online tests are “Preset and Monitor” tests. This allows the user to Preset an AO or DO or Monitor an AI or DI.
The computer system used to drive the I/O must have an Ethernet (10/100 minimum) connection with TCP/IP. A 10/100/1000 switch is recommended.
The system comes with a five (5) year warranty.
TMI can provide installation assistance if necessary. The installation includes mounting and cabling all the hardware supplied by TMI. It does not include wiring to the I/O panels.
All TMI customers are self maintainers. They need the documentation to perform their maintenance. All schematics, technical manuals are provided.
TMI upgrades more nuclear simulators than all other hardware vendors combined. Nuclear simulation is the heart of TMI’s business. Below is a list of some of TMI I/O users.
Seabrook Station Monticello
Vermont Yankee Peach Bottom
Nine Mile Point Grand Gulf
Fitz Patrick ANO
Northeast Utilities River Bend
Hatch Three Mile Island
Farley KSU Sweden
Beaver Valley Detroit Edison
Perry DC Cook
Surry North Anna
Indian Point Kewaunee
Point Beach Taiwan Electric Power Co.
Robinson Korea Electric Power Co.
Shearon Harris Bruce Power Canada
Wolf Creek Byron
Cooper Calvert Cliffs
Oyster Creek Dresden
Hope Creek Salem
Quad Cities Laguna Verde
LNPP Mochovce (Slovakia)
Palo Verde Energy Northwest
South Africa McGuire