Ecolab Versatronic Manuel D'utilisation page 451

Depending on the configuration of each controller channel, only the valid parameters for
the command are active. Those that are unused appear light grey, but cannot be edited.
Two duplicate parameters are related to the first and second controller output.
Go to: Device menu è Settings è Parameter sets è Controllers 1 to 4 è Parameter
sets 1 and 2
Parameter
Proportional band 1 (Xp1)
Proportional band 2 (Xp2)
Derivative time 1 (Tv1)
Derivative time 2 (TV2)
Reset time 1 (Tn1)
Reset time 2 (Tn2)
Switching period 1 (Cy1)
Switching period 2 (Cy2)
Contact distance (Xsh)
Hysteresis 1 (Xd1)
Hysteresis 2 (Xd2)
Operating point (Y0)
Output level Max. (Y1)
Output level min. (Y2)
Min. relay switch-on time 1
(Tk1)
minute Relay switch 2
(TK2)
Selection /
option Explanation
1 Range of the control error (actual - set point), in
0 to 9999.9 ( )
which the output level is proportional to the
control deviation. The smaller the proportional
range is selected, the greater the output ratio
change per deviation. If the proportional band is
set to a value of 0, the controller will
automatically function as a limit switch without
PID controller structure.
0 to 9999 s Influences the differential component (D
component) of the controller output signal. The
purpose of the D component is to dampen the
temporal actual value gradient, and thus to
suppress the tendency to vibrate. The effect of
the D component is stronger with larger
derivative time.
0 to 9999 s Influences the integral component (I component)
of the controller channel. The purpose of the I
component is to minimise steady-state error. The
effect of the I component becomes weaker with
greater reset time.
0 to 9999 s When an output of a controller channel is
configured as a pulse width output, the period of
the switching pulses is fixed here. The cycle time
should be chosen so that, on the one hand by the
clocked controller output signal (i.e. heating,
cooling, metering, etc.) no interfering actual value
fluctuations arise, and on the other hand, the
switching outputs thereof and driven resources
are conserved as possible.
Minimum of deviation from which switching
-0 to 999.9 (1)
controller outputs are active. It is used for the
protection of switching outputs or connected
equipment when driving continuous controllers
with pulse outputs. For very small deviations, the
switching operations of the controller output are
suppressed.
The operating distance between the output states
0 to 999.9 (1)
(on / off) for switching controllers
(Proportional range = 0) The switching should be
selected so that the actual value will not vary
greatly from the output of the switching controller;
on the other hand, the switching outputs and
which controlled resources are conserved as
possible.
- 100 to +100% Constant value for correcting the operating point
Controller
The set value corresponding to the output level
when the actual and setpoint values are equal
(Deviation = 0). Is used when the controller
structures without an I component as a manual
output level offset for the elimination of steady-
state deviations.
0 to 100% Maximum degree of operation is not effective
with threshold switch behaviour
(Proportional band = 0)
-100 to +100 % Minimum output not effective in limit switch
behaviour (Proportional range = 0)
0 to 60 s Based on the min. relay switch-on time of the
pulse length is to the bottom, and the pulse
frequency is limited to the top. This limits the
switching frequency for switching relay outputs.
179
Device menu
Default
0,0
80.0 s
350.0 s
20.0 s
0,0
0,0
0 %
100 %
-100 %
0.0 s
417102269 Rev. 2-08.2020