Woodward MicroNet TMR 5009, Installation/Hardware Manual

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5009 Installation/Hardware Manual 85580V2
8 Woodward
MPU and Analog I/O Module (A3)
Each analog module contains circuitry for four speed sensor inputs, eight analog
inputs, four analog outputs, and two proportional actuator outputs. An on-board
micro-controller scales inputs and outputs using calibration constants stored in
EEPROM, and schedules outputs to occur at the proper time. Refer to Figure
2-5. This module includes no potentiometers and requires no calibration. When a
channel or module fault is detected, the control annunciates the fault, disables
the channel or module and does not use the channel/module’s data in system
calculations or control.
Each CPU sends and receives information to and from its respective MPU &
Analog I/O module via the VME bus. Each input value is stored in a register and
addressed by the CPU as required. Outputs are driven by the CPU, through the
module’s associated output drivers.
Figure 2-5. MPU and Analog I/O Module
Analog Termination Modules
Analog Termination Modules (ATMs) mount external to the 5009 chassis on a
standard DIN rail. The analog termination modules are used to connect analog
field wiring to the 5009 control. An ATM houses circuitry to:
•
route each input signal to the system’s three independent (rack mounted)
analog modules
•
produce each output signal by summing the three independent analog
modules’ respective outputs