Table 17 Alt General Tab Parameters - Honeywell HC900 Reference Manual

ON/OFF delay timers
There is an On-delay timer and Off-delay timer value that applies to all 16 outputs. These timers are the
same times used with the Make/Break feature. There is one period for all On-delay times and one period for
all Off-delay times.
If an output is waiting in an On-delay timer and new input conditions the output state to turn OFF, then the
delay timer is reset, the output does not change state. If an output is waiting in an Off-delay timer and new
input conditions the output state to turn ON, then the delay timer is reset, the output does not change state.
The timers operate in a cascade style. Example: If three outputs are requested, output #1 Turns On, then #2
which is followed by #3.
Properties Group
Tag Name
General
Descriptor
Time Delay On-Time
Delay
(seconds)
Off-Time
Delay
(seconds)
Styles Direct
Rotary
FOFO
Fixed
Make before Break
Activate Advance
Used with all styles except Direct
Revision 11
2/07

Table 17 ALT general tab parameters

Parameter Index #
N/A
N/A
1
2
N/A
3
0
HC900 Hybrid Control Designer Function Block Reference Guide
Parameter Description
16-character tag name
Block description
Delay time used before turning
ON the next output in the
sequence. Used with
"Make/Break" feature
See "ON/OFF Delay Timers"
Delay time used before turning
OFF the next output in the
sequence. Used with
"Make/Break" feature
See "ON/OFF Delay Timers"
See "Style Selections" for
definitions
Determines how an OUT is
toggled ON and OFF.
Used with "Rotary" and "FOFO"
styles
See "Make before Break" for
definition.
Activates the "Advance" feature.
This allows an OFF to ON
transition of the ^ADV Input pin
to rotate the output order
sequence.
See "Activate Advance" for
definition.
Function Blocks
ALT Alternator Function Block
Value or Selection
Range: 0 – 99999 sec
Default = 0
Value can be changed
from the Operator
Interface
Range: 0 – 99999 sec
Default = 0
Value can be changed
from the Operator
Interface
DIRECT
ROTARY
FOFO
FIXED
The parameter selected
here can be altered from
an operator interface.
ON = Make before Break
OFF = Break before
Make
Default = Make before
Break
Click on box to turn ON
Activate Advance
The parameter selected
here cannot be altered
from an operator
interface
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