Honeywell VRX180 Manual De Usuario

In a multi-profiler instrument the profiles in a program can be totally unrelated to each other, that is, you 
can give them different times and settings.  If you want the profilers to be coordinated, you must 
configure each profiler that way.  For example, if you want all your profilers to be started by the same 
signal, you must configure each profiler with the same START parameter.  The Copy Block function in 
the Program menu lets you copy parameters from one profiler to another. 

Allows a multiple SPP user to synchronize several SPPs for when one enter hold due to a guaranteed 
hold, the others will enter hold and when the one that entered hold leaver hold the others will leave hold 
also. This is done by using a block output status called SG (status guaranteed hold) that is high when 
the block is in guaranteed hold mode. If different SPPs are used, the SPPx SG outputs should run 
through an OR block and then the output of the OR block back to the SPPx HOLD input. The SG status 
output may be viewed on the discrete status screen. 

You can program a profiler with discrete inputs that enable you to reset, start, hold, advance, shut down, 
or fast forward through the profiler, hot start the profiler from a live process variable, increment a ramp 
segment, or enable/disable guaranteed soak.  See 

Table 5-2

. 

Note that some discretes are edge-sensitive and some are level-sensitive.  Edge-sensitive means that 
the action is triggered by the discrete’s transition from OFF to ON (rising edge) or from ON to OFF 
(falling edge).  The changing status is what triggers the action, not the status itself.  Some discretes, 
such as START, are rising edge-sensitive only and are not affected by a falling edge.  When START’s 
discrete goes ON, the profiler starts to run; when the discrete goes OFF, the profiler continues running. 

Level-sensitive means that one action occurs while the discrete is ON and another action occurs while 
the discrete is OFF.  The status is what causes the action, not the changing status.  Fast forward’s 
discrete is level-sensitive; that is, the profiler will run in fast forward while the discrete is ON but not 
while it is OFF. 

START 

Starts Profiler from Ready, Hold, or End state.  
Activated by operator menu or by discrete input. 
May be connected to the F1 key (SY1F1). 

Rising 
edge 

Profiler in Ready or 
End state 

Profiler 
starts to 
Run. 

RESET/
RUN 

The behavior of this parameter depends on START.  
If the START discrete input is programmed with a 
discrete, then switching RESET/RUN from OFF to 
ON resets an Ended, Hold, or Ready profiler to the 
starting value of segment 1. 

Rising 
edge 

Start is 
programmed with a 
discrete parameter 
& profiler is in 
Ready or Hold or 
End 

Profiler 
changes to 
Ready and 
goes to 
Segment 
#1. 

 

If the START discrete input parameter is not 
programmed with a discrete, then switching 
RESET/RUN from OFF to ON resets an Ended, 
Hold, or Ready program to the starting value of 
segment 1 and to the profiler’s Ready state.  On a 
transition from ON to OFF, starts an Ended profiler. 

Rising 
edge 

START is not 
programmed with a 
discrete parameter 
& profiler is in 
Ready or Hold or 
End 

Profiler 
changes to 
Ready and 
goes to 
Segment 
#1. 

 

 
RESET/RUN does not affect a running program. 
May be connected to the F3 key (SY1F3). 

Falling 
edge 

START is not 
programmed with a 
discrete parameter 
& profiler is at End 

Profiler 
goes to 
Segment #1 
and starts 
to Run.