Argo-Hytos EL7-E, Instruction Manual

Page: 13 / 60

[%]
[mA]
command signal [%]
I
out
[mA]
[%]
>1
<1
1
[mA] I
out
[mA]
[%]
offset
[mA] I
out
[mA]
command signal [%]
command signal [%]
EL7-E_Pokyny_Instructions_Hinweise_19152_1en_de_cz_04/2021
Page 13
www.argo-hytos.com
Polarity inversion of the input signal:
In the case of single solenoid valve the input command signal is inverted.
In the case of double solenoid valve or a valve with a bipolar linear motor the inverted input command signal changes the movement direction of
piston rod of controlled hydraulic cylinder or rotation direction of shaft of hydraulic motor.
Insensitivity zone (dead band) setting:
This function allows setting the width of the area around zero point
(in % of the maximum value of input command signal), in which the output
control signal for valve coils is equal to zero.
The function is used in the practise as a measure against excessive
sensitivity and for stability increasing of regulated system.
The function can be switched off. When is on, the shape of the
characteristic „output control signal as a function of input command
signal“ can be
modified by entering ten values of input signal.
The function allows to set a velocity of
rising of the output control signal
with increasing input command signal
in the range 0 < gain ≤ 4
The function allows to set the default
position of characteristic by
moving in the vertical direction.
This function can be used to elimination
of insensitivity zone around zero
point, caused by overlap of spool control
edges.
Linearization function:
Gain (amplification) setting:
Default position of characteristic (Offset):