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the 1-0 automatic adjustment screen
or 1-00 manual adjustment screen.
To
(16)
Output Characteristics Setting
Output characteristics setting screen
Initial value:
Select from the following shown on the screen:
: Direct characteristics (initial value)
: Reverse characteristics
Direct characteristics (DA): Control is carried
out in the state that the direction in which
input increases and decreases is the same as
the direction in which the value of position
increases and decreases.
Reverse characteristics (RA): Control is
carried out in the state that the direction in
which input increases and decreases is
opposite to the direction in which the value
of position increases and decreases.
Note:
In case is selected for external input,
setting is not possible and the screen is for
monitoring only.
(17)
Dead Band (insensitive area) Setting
Dead band setting screen
Initial value: 2.0%
Setting range: 0.2~10.0%
In case the control motor has higher inertia,
hunting (opening and closing are repeated
without stopping) may be caused. To prevent
this, set a larger value for dead band.
When control of high precision is needed, a
smaller value should be set for dead band.
You must be very careful since smaller dead
band tends to result in hunting.
Hysteresis: One fourth of dead band.
The minimum value of hysteresis is 0.2%.
1-36
1-35
ON
Dead band DB
Hysteresis
Hysteresis
Target value
of position
OFF
Hysteresis setting screen
Initial value: PrP
Setting range: PrP, 0.0
―
5.0%
When set to “PrP”, hysteresis is fixed to
1/4 of dead band.
If dead band is less than 0.8%, hysteresis is
fixed to 0.2%.
1-37
(19)
Keylock Setting
Keylock setting screen
Initial value: 0
Setting range: 0, 1, 2 and 3
Select from the following shown on the screen:
: Without keylock (initial value)
: Keylock of screen groups 1 and 2
: All keylock except manual operation
: All keylock (In case manual operation is set
before setting keylock, however, operation
by and keys is possible.)
1-38
Key Operation Method
7-5. Explanation of Screen Group 2 (Special Screen Group)
and Setting
Press the key to proceed to the next screen. Use the
and keys for selection and the key for registration on
each setting screen. While selection is going on by the use of
the and keys, the decimal point on the lower right side
of the numerical value blinks. The blinking stops upon
registration of the selection. When the key is pressed on
any screen except the 2-0 screen, the 2-0 screen returns onto
display.
ENT
ENT
DISP
DISP
Data in this screen group should be set only by one with thorough
knowledge of the EM70 series and the system. Generally, the
instrument is usable without changing the initial values in this
screen group.
In the screen group 2 (special screen group), setting and reading
through communication is not possible.
Pressing the key continuously for 5 seconds on the 0-0
basic screen calls the 2-0 screen of screen group 2 (special
screen group).
To return to the 0-0 basic screen, press the key on the 2-0
screen.
The screen group 2 comprises 4 special screens, of which the
sequence is shown in the following.
Screen for setting square root extraction
function
Initial value:
Select from the following shown on the screen:
: With square root extraction
: Without square root extraction
Control is carried out by calculating
opening/closing degrees, using the square of
input as a target position value.
1-34
Motor speed adjustment “2G” setting screen
Initial value: oF
Setting range: oF, 10
―
100%
When DI preset Value operation is selected,
motor speed adjustment is carried out with
the parameter “2G”.
If set to “oF ”, motor speed adjustment is
carried out with the parameter “1G”.
1-33
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to the 1-37 screen
(18)
Hysteresis Setting
