User Manual Owner's manual

Rockwell Automation Publication 280E-UM001B-EN-P – July 2012 335
Appendix E
StepLogic, Basic Logic and Timer/
Counter Functions
Four Bulletin 284E ArmorStart® logic functions provide the capability to
program simple logic functions without a separate controller.
• StepLogic Function
Steps through up to eight preset speeds based on programmed logic.
Programmed logic can include conditions that need to be met from digital
inputs programmed as Logic In1 and Logic In2 before stepping from one
preset speed to the next. A timer is available for each of the eight steps and
is used to program a time delay before stepping from one preset speed to
the next. The status of a digital output can also be controlled based on the
step being executed.
• Basic Logic Function
Up to two digital inputs can be programmed as Logic In1 and/or Logic
In2. A digital output can be programmed to change state based on the
condition of one or both inputs based on basic logic functions such as
AND, OR, NOR. The basic logic functions can be used with or without
StepLogic.
• Timer Function
A digital input can be programmed for Timer Start. A digital output can
be programmed as a Timer Out with an output level programmed to the
desired time. When the timer reaches the time programmed into the
output level the output will change state. The timer can be reset via a
digital input programmed as Reset Timer.
• Counter Function
A digital input can be programmed for Counter In. A digital output can be
programmed as Counter Out with an output level programmed to the
desired number of counts. When the counter reaches the count
programmed into the output level the output will change state. The
counter can be reset via a digital input programmed as Reset Counter.