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Model 493.10 Chassis

Models FlexTest® IIm/GT/SE Controller Hardware Introduction

Front panel The Model 493.10 Chassis front panel has twelve slots; ten VMEbus slots and

two slots (A and B) which are reserved.

Rear panel The rear panel of the chassis has twelve transition bus slots. Two of these rear

panel slots (slots A and B) can not be used with powered MTS transition

modules. The chassis can be rack mounted or used in a floor standing

configuration.

VMEbus modules The chassis has ten VMEbus slots that support a variety of MTS VMEbus plug-

in modules.

• The chassis requires at least one processor module. The processor module

provides the processing power to manage the other plug-in modules that

make up the controller.

• The chassis can have up to eight I/O Carrier modules. Each I/O Carrier

module supports up to four mezzanine cards.

• An optional Global Resource (GRES) module provides several connections

to communicate with external devices such as a remote station control

module, temperature controller, and other devices.

Transition bus Transition modules are panels plugged into the transition bus located in the rear

of the chassis. Each transition module allows external devices to interface with

the chassis. Transition modules provide the following:

• Hydraulic control connections

• Station control connections

• Analog input and output connections

• Digital input and output connections

• Serial connections

Cable conduit The chassis has a conduit that allows cables to be routed from the front VMEbus

modules to the rear transition modules and out of the chassis.

Power supply Two power supplies are used. One provides +5 V DC and ±15 V DC for the plug-

in modules; the other provides ±12 V DC for plug-in modules and +24 V DC for

hydraulic power and the chassis fan. The power supplies have universal inputs

and will adapt to any line voltage between 90 and 264 V AC.

The power supply is protected with an external circuit breaker in the On/Off

switch that trips at a 10 amp overload. An internal fuse in the power supply is not

user accessible or repairable.

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Mts Model FlexTest SE Manual do Utilizador Página 21