Honeywell VRX180 user manual Fast, Forward

				Setpoint Profiler
Parameter name	Definition	Triggered	Conditions		Result
		by	present
FAST	FAST FORWARD is a way to test for proper	Level ON			When in
FORWARD	functioning of the profiler’s events and				Run mode,
	outputs, without having to wait for the profiler				profiler
	to execute at its normal speed.				runs at
	When FAST FORWARD is ON, the profiler will				Fast
					Forward
	run at a speed determined by the TIME				speed.
	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.

Values sampled at each
scan during fast	forward
	200
	175
	150
	130
	107
	100
Sample	interval
60 x 500 msec
= 30 seconds
Normal time of segment:		110 seconds		130 seconds			120 seconds
Fast forward time:		< 2 seconds		> 2 seconds			2 seconds
			= profile is sampled		= sampled value
		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.

Figure 5-11 Fast Forward

Video Recorder – User Manual 187