Regada REMATIC ULR 1PA-Ex, Инструкции по установке, обслуживанию и техническому обслуживанию, Страница: 12 / 52

10 ULR 1PA-Ex, ULR 2PA-Ex
2. Description, function and specifications
2.1 Description and function
The ULR
Х
PA-Ex electric actuator is controlled by 24 V DC voltage fed to the electric actuator’s terminals
according to the wiring diagram, resp. by 0/4/12 up to 20 mA, 4 up to 12 mA (0/2 up to 10 V) (input control
signal and provides for moving the output part of the EA automatically to a position corresponding to the
value of the input signal) and other functions as well.
The electric actuator consists of these main parts ( Fig. 1, 1A ):
The electric actuator is driven by an electric motor (1) supplied (single-phase motor) from the
source board (3) and control unit (2) of the DMS 3 electronics.
Position of output element of EA and thrust is scanned by contactless absolute sensor.
Depending on the version, the DMS3 electronic circuit board may include an electronic position
transmitter (EPV) without power supply (passive) with output signal 4 to 20 mA.
Space heater (5) is placed at the control board.
In case of power cut or damage of switches the actuator can be controlled by manual handle
according to instructions stated in chapter 5.1 Service.
Basic modules of DMS3 electronic control system for ULR
Х
PA-Ex:
Control unit (2) – main part of system DMS3 – it contains microprocessor, 6 signal LED and 4 buttons for
simple adjustment and control of EA, connectors for connection of thrust scanner and sourcing board
and communication connector (connection to PC for adjustment and diagnostic), 2 free programmable
relays R1 and R2, 1 relay READY and terminals for electric connection.
Sourcing board (3) – secures power supply of electronic and provides an output voltage of 24 V DC,
40 mA for the user, it contains user terminal board, switching circuits, connector for connection
with control unit.
Position scanning unit (4 ) – secures contactless magnetic position scanning of output element.
Thrust reading unit (6) – provides contactless magnetic thrust reading.
LED display (7) – shows instant position of EA output member and reports and displays potential errors,
which would occur when EA is operated. Signalling motion and failure of the EA is also indicated by
LEDs diode. LED display is used only pro type of construction EA without local control.
Manual control: made up by a handwheel with a worm gearing.
Other accessories – as optional accessories:
- additional relays module RE3, RE4, RE5 (8).
- local electric control module equipped with 2-line LCD display (fig. 7).