MTS Model FlexTest SE - Manual (Page 21)

Model 493.10 Chassis
Models FlexTest® IIm/GT/SE Controller Hardware Introduction 21
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.