Honeywell VRX180 - Manual (Page 201)

Setpoint Profiler
Video Recorder – User Manual 187
Parameter name Definition Triggered
by Conditions
present Result
FAST
FORWARD FAST FORWARD is a way to test for proper
functioning of the profiler’s events and
outputs, without having to wait for the profiler
to execute at its normal speed.
When FAST FORWARD is ON, the profiler will
run at a speed determined by the TIME
MULTIPLIER parameter. The higher the time
multiplier, the faster the profiler will run.
Fast Forward is activated by a discrete input.
Example
The Programmer is running at a 500msec
scan rate. The TIME MULTIPLIER is set to
60. Therefore the profiler will run 60 times
faster than normal. The profiler will increment
in (500msec x 60) or 30 second increments.
Put another way, every half-second the profiler
will advance 30 seconds.
See Figure 5-11 Fast Forward.
Level ON When in
Run mode,
profiler
runs at
Fast
Forward
speed.
100
Normal time of segment: 110 seconds 130 seconds 120 seconds
107
130
150
175
200
Time Multiplier = 60
Scan Rate of machine = 500 msec
Therefore, every half second the profile is incremented 30 seconds
Segment #2 begins between samples. Segment #2's events not recognized until next scan cycle.
= profile is sampled
Sample interval
60 x 500 msec
= 30 seconds
Fast forward time: < 2 seconds > 2 seconds 2 seconds
Values sampled at each
scan during fast forward
= sampled value
Figure 5-11 Fast Forward