The display configuration depends on the input type selected in the input module.
As RATE METER, the display module includes programming of the input frequency with decimal point and the desired display
with decimal point. The display/frequency ratio may be set for direct or reverse operation.
As RPM METER, the only parameter necessary to configure the display is the number of pulses per revolution that delivers
the sensor. Programming is completed with the display resolution.
To adjust the display to the particular system characteristics, the display module includes the parameters sampling time and limit
time, which are accessible by holding the “ENTER” key for 3 seconds before exiting from the program routines.
INPUT FREQUENCY (INP1)
The "INP1" parameter refers to the input frequency generated
by the transducer. This frequency must be within the specified
limits (0.1Hz to 7KHz) and can be programmed with two, one
or no decimal places.
DESIRED DISPLAY (DSP1)
The "DSP1" parameter is the desired display readout
corresponding to the frequncy programmed in the “INP”
phase. The decimal point can be located in any of the digits of
the display.
The display variation can be directly proportional to the input
variation (increasing frequency
→
increasing display) or
inversely proportional (increasing frequency
→
decreasing
display and vice-versa).
The first menu step allows to select one of these modes (dir =
direct, inv = reverse).
2.6.1 RATE METER PROGRAMMING
2.6 - DISPLAY CONFIGURATION
14
EXAMPLE
It is desired to measure the rate in m/s of a conveyor belt
which is driven by a turning shaft of 20 cms diameter and
300 rpm that gives 4 pulses per revolutiion.
In 1 second, the shaft gives 20 pulses (300 rpm = 5
revolutions per second and 1 revolution = 4 pulses). The
input frequency is then 20Hz. At such frequency, the rate of
the conveyor belt is :
rpm
×
π
×
d = 300
×
π
×
20 = 18849.6 cm/min = 3.142 m/s
The INP1 and DSP1 parameters must be : INP1 = 20, DSP1
= 3.142.
The display mode must be selected for direct variation with
respect to the input frequency (dIr option).
