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ACT2000
2.3 Basic Operation and State Description
The basic operation of the ACT2000 is described in the following sections. The
Power-Up mode section covers the Power Up/Reset and the Set-Up states. The
Run Mode section covers the Home/Dead Band, Holding Motor Current and the
Run states.
SET-UP
POWER
UP/RESET
HOME
DEADBAND
RUN
HOLDING
MOTOR
CURRENT
SETUP
COMPLETE
RESET
COMMAND
POSITION DEMAND
<4.1 mA AND
ACTUATOR POSITION
FEED BACK
<4.2 mA
POSITION
DEMAND
>4.1 mA
MOTOR CURRENT>MAX
HOMING FORCE AND
ACTUATOR VELOCITY <
0.05 IN/SEC
RESET
COMMAND
RUN
COMMAND
RESET
COMMAND
SETUP
COMMAND
Figure 2-7: ACT2000 State Machine
2.3.1 Power-Up Modes
When 120 VDC is applied to the ACT2000, the on-board DC converter supplies
power to the driver and digital boards. The ACT2000 will operate with voltages
ranging from 80 VDC to 160 VDC.
Power-Up/Reset State
Once the digital signal processor (DSP) receives required voltage, it starts the
firmware program and enters the POWER-UP/RESET state. See Figure 2-7. The
program checks electronics health, clears system registers and retrieves set-up
parameters from the electrically erasable programmable read only memory
(EEPROM).
Once the program is complete with the health check, it waits for either the RUN,
RESET or SET-UP command.
• If the ACT2000 receives a SET-UP command from the ActWiz software
(through the RS232 interface), firmware program will transition to the SET-UP
state.
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