AW Gear Meters RT-30EX - Manual (Page 24)

RT-30EX Flow Transmitter
Operation and Programming Manual
24
RT-30EX User Manual, Rev. 1.7 02/07/2012
LIMIT / Pulse output programming
Three opto-isolated NPN open-collector outputs can sink or source depending on connection (i.e.,
power can flow in or out). Output ratings are listed on page 7.
Connection polarity: collector (+), emitter (-). See Figure 7.
From the first screen, the output to be programmed is selected. All three outputs can be independently
setup and if any of the outputs are not to be used, they can be turned off. Limit 1 and Limit 2 can be
configured as a frequency output matching the incoming frequency from the flow meter, as a totalizer
cycle output, a flow rate set point trigger or to trigger on a set value of the Total or Grand Total. The
third Frequency Out can only be used to output the incoming frequency from the flow meter.
To exit the LIMIT programming screen, press the UP or DN button until Select Limit option shows Exit.
Then press the EXIT button
~Limit 1
~Limit 2
~Frequency Out
~Exit
UP/DN ENT
Source options
Select Limit
> ______________
Select Limit type
______________
Notice
Figure 28: Limit programming choices