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Model 170E Microcomputer |
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Features:
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Description:
The Model 170E Microcomputer is a
mature member of Safetran's successful family of Microcomputers. All
applicable CALTRANS requirements have been met. The model 170E incorporates the
latest concepts in design for operation in hostile environments. Several
configuration options are available from Western Pacific Signal.
Applications:
The Model 170E has been designed to
operate virtually all traffic applications; from two phase intersection control
to computerized network systems. In addition, with the implementation of various
software packages, the Model 170E has found applications in ramp metering
control, matrix sign control, sprinkler control, pump control, and changeable
lane control.
Module Design:
All modules have been designed to increase reliability, reduce maintenance and
lower power consumption, and are mounted in a vertical plane to facilitate heat
dissipation. A unique module and chassis design ensure proper positioning of
each module. All modules may be extended, for maintenance purposes, using
extender cards (www.wpsignal.com)
.
CPU Module:
The CPU houses the MPU, the quad
ACIA's, up to 32K RAM, Decode Logic and Bus Drivers. An option allows the
installation of up to 32K of EPROM on the CPU thus eliminating the requirement
of a Program Module. This feature reduces the complexity and total power
consumption of the 170E Controller.
Input Module:
The single input module draws
heavily on HCT technology. Lightning protection devices have been added to
enhance surge protection. All input circuits are resident on this module to
facilitate maintenance. In addition, the power start-up and super capacitor
circuitry are located on this module.
Output Module:
The single output module contains
the entire output circuitry for the 170E. Operation can be easily diagnosed by
simply exchanging output modules.
Power Supply Module:
The Model 170E is equipped with a
linear power supply. All components of the power supply, including capacitors,
transformers, and power transistors, are located on this removable module.
Connection between the power supply and the motherboard is via a floating 15-pin
and socket power rated connector.
Chassis:
The model 170E chassis was designed
on a CAD system. Numerically controlled production equipment guarantees
perfectly matched assemblies. A printed circuit motherboard assembly provides
reliable interconnect between the modules. A separate bus for the I/O increases
noise immunity. In addition, separate logic ground paths are supplied from the
power supply to each module. Vertically mounted, the C1, C2, C20, C30, and C40
connectors are located on the back of the Model 170E. To facilitate the
installation of the Program Module, card guides have been extended to the front
panel. A hinged front panel is held in place by four thumb-screws. When closed,
the front panel prevents the modules from backing out of the connectors. The
Model 170E may be equipped with two communication modules.
Standby Power:
The Model 170E is supplied with
super capacitors, which supply standby power to volatile memory devices and the
down time accumulator circuitry.
M170E Module:
An optional M170E Module can be
provided to replace the 412C Program Module functions when the Internal
programing option is desired. The M170E Module has the sixteen dip-switches and
the real-time Clock circuitry found on the 412C Program Module.
Specifications:
Operating Temperature Range: -37
degrees Celcius to +78 degrees Celcius
Power Requirements: 115VAC, 60Hz (40 watts)
Dimensions: 7" high x 11" deep x 19" wide
Weight: 19 lbs.
Timing Accuracy: Accurate to within 100 ms with a power source
frequency of 60Hz.
Power Supply: Linear design, completely removable, with low
consumption (40 watts).
Communications: Four programmable ACIA ports.
Modules: All modules in vertical plane, all mechanically keyed.
Dual Processor Speeds: 768 KHz and 1.53 MHz.
