Honeywell 900 - Alternator

Process Displays
Alternator
Revision 9 900 Control Station User Guide 105
May 2014
Alternator
The Alternator is typically used to alternate the starting sequence of a group of pumps, valves, filters, etc.
Each block accepts up to 16 inputs and controls up to 16 outputs.
There are four unique alternation styles used to control the output starting sequence so that you can limit
the amount of repeat or continuous usage of a single device (pumps, valves, etc.). If an output device fails,
or has been disabled, then an alternate device will be used in order to meet the requested demand. You may
specify the alternators active outputs and the order in which the outputs are manipulated.
Item Description
Status OK, DISABLED, or HIGH
State OFF or RUN
Style ROTARY, FOFO, FIXED, or DIRECT
NOTE: If the current style is DIRECT, the OUT number corresponds to the
Input sequence that requests the OUT to turn ON. With any other style,
the OUT number corresponds to the number of IN’s (DMND) that need to
be ON to turn the OUT on.
Demand Input count, between 0 and 16
On Delay (Sec) Delay time used before turning ON the next output in the sequence.
Range: 0-99999 seconds
Off Delay (Sec) Delay time used before turning OFF the next output in the sequence.
Range: 0-99999 seconds