ARI Armaturen ES11 EN - Manual (Page 3)

Rev. 0040601000 1014 Page 2-3
Operating and installation instructions 
Electronic positioner ES11
4.0 Description
4.1 Scope of application
The ES11 electronic positioner is used wherever 3-step actuators (servo drives) are to be
activated with standardised electrical signals.

The ES11 electronic positioner is suitable for control cabinet installation as well as
installation in servo actuators of the series ARI-PREMIO and ARI-CS25 to CS27.
The ambient conditions have to be conform to the actual electromagnetic compatibility
directives. Additional the compatibility to this directives has to be maintained in case of
expansion or other changings of the ambient conditions.
4.2 Operating principle
The ES11 electronic positioner converts constant input signals (current signals up to 20 mA,
voltage signals up to 10 V) into 3-step output signals. Electrical actuators are connected to
the 3-step output signal. The electronic positioner and actuator make up a control circuit.
The actuating signal is selected by means of corresponding terminal connections. LEDs
indicate control direction and operation stand-by.

The red and green LEDs facilitate adaptation of the resistor input to the actuating signal. 
The settings are made by means of trim potentiometers. 
The control stage is galvanically (electrically) isolated from the power input.
ATTENTION !
To facilitate use in 3-conductor wiring, the ground input
 may be connected to
the N contact of the power input only in the 24 V AC version. 
The new contact is then referred to as zero potential (0V).
Split range operation is possible in steps of 20%.
The effective direction ratio of the actuating signal input to the actuating signal output can
be selected with the effective direction selector switch SW.
4.3 Technical data
Operating Voltage U
B
24V 50-60Hz 
-20% +10%
115V 50-60Hz 
-20% +10%
230V 50-60Hz 
-20% +10%
Operating current without
load I
B
150 mA 40 mA 20 mA
3-step switching current I
S
4A / cos 0,5
Hysteresis < 0,6%
Input signal Y
U
....10V DC (RI =30 kOhm)
Input signal Y
I
....20mA DC (RI =125 Ohm)
Potentiometer input R
P
0....10k , preferably 0....1k 
(use potentiometer only as a voltage divider)
Type of enclosure IP40 (clamps IP20)
Ambient temperature -20....+70 °C