Table of Contents
Advertisement
3 Design and principle of oper-
ation
The TROVIS 5724-3 and TROVIS 5725-3
Electric Actuators with Process Controller
consist of a linear actuator with an integrat-
ed digital controller.
They are especially designed for DHW heat-
ing in instantaneous heating systems for
small to medium-sized buildings and for
fixed set point control circuits in mechanical
engineering applications. They are particu-
larly suitable for mounting to SAMSON
Types 3213, 3214, 3260, 3222, and 3226
Valves.
A special version of Type 3222 (DN 25) and
Type 3222 N DN 15) with a special plug de-
sign is available for small installations
(apartment or house). As a result, even small
tapping amounts can be controlled.
8
Fig. 1: TROVIS 5724-3 and 5725-3 Electric Actuators with Process Controller, force-locking valve
connection
EB 5724 EN
9
1
12
2
3
4
The integrated digital controller must be con-
nected to a temperature sensor on the input
side, which can be optionally upgraded by a
water flow sensor or a flow switch.
Alternatively, a current signal can be used
for mechanical engineering applications.
The set point of the digital controller is set
to 60 °C and can be changed manually at
the set point potentiometer (11) or in the
TROVIS-VIEW software.
The actuator contains a reversible synchro-
nous motor and a maintenance-free gear.
The synchronous motor is switched off by
torque-dependent switches in the end posi-
tions or in case of overload. The force of the
electric motor is transmitted via gearing and
crank disk to the actuator stem (3) and to the
plug stem of the mounted valve.
1.1
1.2
1
1.1
1.2
2
3
4
8
9
11
12
11
Î Do not open the back housing cover.
Design and principle of operation
Electric actuator with process
controller
Front cover
Cable entry
Handwheel (TROVIS 5724-3 only)
Actuator stem
Coupling nut
Spring assembly (TROVIS 5725-3
only)
Travel indication scale
Set point potentiometer
Serial interface (RJ-12 port)
11
Advertisement
Table of Contents
