Emerson Model 1700 Manual De Usuario
Overview
Frequency Output Polarity
controls how the output indicates the ON (active) state. The default
value, Active High, is appropriate for most applications. Active Low may be required by
applications that use low-frequency signals.
applications that use low-frequency signals.
Procedure
Set Frequency Output Polarity as desired.
The default setting is Active High.
Options for Frequency Output Polarity
Options for Frequency Output Polarity
Table 6-5:
Polarity
Reference voltage (OFF)
Pulse voltage (ON)
Active High
0
As determined by power sup-
ply, pull-up resistor, and load
(see the installation manual for
your transmitter)
ply, pull-up resistor, and load
(see the installation manual for
your transmitter)
Active Low
As determined by power sup-
ply, pull-up resistor, and load
(see the installation manual for
your transmitter)
ply, pull-up resistor, and load
(see the installation manual for
your transmitter)
0
6.3.2
Configure Frequency Output Scaling Method
Display (standard)
OFF-LINE MAINT
> OFF-LINE CONFG > IO > CH B > SET FO > FO SCALE
Chinese-language
display
display
Offline Maintain
> Configuration > Input/Output > Channel B Setup > Frequency Output > Scaling Meth-
od
ProLink II
ProLink
> Configuration > Frequency/Discrete Output > Frequency > Scaling Method
ProLink III
Device Tools
> Configuration > I/O > Outputs > Frequency Output
Field Communicator Configure > Manual Setup > Inputs/Outputs > Frequency Output > FO Scaling
Overview
Frequency Output Scaling Method
defines the relationship between output pulse and flow
units. Set Frequency Output Scaling Method as required by your frequency receiving device.
Procedure
1.
Set Frequency Output Scaling Method.
Option
Description
Frequency=Flow
(default)
Frequency calculated from flow rate
Integrate the meter with the control system
Configuration and Use Manual
89