Omron E5AX-LA Manual page 10

E5AX-LA/-MA
Decimal Point: dp
Set the position of the decimal point by pressing the Up and Down
Keys. A value between 0 and 3 will be displayed to indicate the posi-
tion of the decimal point as shown in the following table. The decimal
point is factory-set to 1.
Value of dp Decimal point
0 1 0000
1 0.1 000.0
2 0.01 00.00
3 0.001 0.000
Scale Value for 0% Input: inl
Set the scale value for 0% input by pressing the Up and Down Keys.
The value can be set between –999 and 9998 in increments of 1 and
is factory-set to 0.0.
Scale Value for 100% Input: inh
Set the scale value for 100% input by pressing the Up and Down
Keys. The value can be set between –inl +1 and 9999 in increments
of 1 and is factory-set to 100.0.
Example:
When measuring liquid flow between 100.0 and 510.5 m
4 to 20 mA input.
1. The decimal point is set to "1."
PV
SV
2. The 0% scale value is set to the value to be displayed for 4
mA, i.e.,100.0.
PV
SV
3. The 100% scale value is set to the value to be displayed for
20 mA, i.e.,510.5.
PV
SV
Control Period: cp
Control period for PID control with feed-forward can be set. To set
the control period, pin 1 on the operating mode selector (SW201)
must be set to the OFF position. When cp is displayed on the PV dis-
play, the control period can be set or changed in a range from 1 to 99
seconds in units of 1 second. The factory setting is 20 seconds.
When a Voltage Output Unit is used, it is recommended that the con-
trol period be set to 20 seconds or less (ideally, about 2 seconds), so
that the control operation can be performed more accurately.
Control output
ON
OFF
20 seconds
10
3
/h using a
dp
1
a
inl
100.0
a
inh
510.5
a
When control period is
set to 20 seconds
Hysteresis: hys
The hysteresis value for the ON/OFF control can be set between
0.0% and 100.0% FS while hy5 is displayed on the PV display using
the Up and Down Keys. The factory setting is 0.2% FS.
Reverse operation
ON
OFF
Low
ON
Normal operation
OFF
Low
Hysteresis Alarm: hysa
The hysteresis alarm value for the alarm 1 and 2 can be set between
0.0% and 100.0% FS while hy5 is displayed on the PV display using
the Up and Down Keys. The factory setting is 0.1% FS.
Shift Set: sp–s
By short-circuiting the shift set input terminal, the control value is
shifted from the set value by the value input for the shift set. When
sp–s is displayed, the Up and Down Keys can be pressed to set the
shift set between –999 and 9999.
200
Set
value
150
Shift set input
short-circuited
LED (SHIFT) is lit when a shift set input is short-circuited. sp–s is
factory-set to 0.
Level 2
In level 2 the control output value, selected input type, and modes
for alarm output can be monitored. Note that level 2 is a monitoring
level only and thus no parameters can be changed. When the Level
Key is pressed for 2 seconds minimum after power application, 5l–l
is displayed on the PV display. Hold down the Level Key again for 2
seconds minimum to display o on the PV display. Then the control
output value, selected input sensor, and alarm modes can be moni-
tored each time the Display Key is pressed.
PV
o
0
SV
Control output value
Press a.
in–t
cur 1
Input sensor
Press a.
al–1
Alarm 1 mode
–––C
Press a.
al–2
–––C
Alarm 2 mode
Press a.
E5AX-LA/-MA
Hysteresis
SP High
Hysteresis
SP High
With a set value of
200 and a shift set
of –50