Honeywell VRX180 Manuale Utente

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. 

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