
STR 1PA, STR 2PA
7
1.8 Description
The
STR PA
electric actuator is controlled according to version
- by 24 V DC voltage fed to the electric actuator’s terminals according to the wiring diagram, resp. by
0/4/12 to 20 mA, 4 to 12 mA (0/2 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
- through Modbus reso. Profibus communication interface
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 through 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 4.
Service and Maintenance.
Basic modules of DMS3 electronic control system for STR PA:
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), according to
version 2 free programmable relays R1 and R2,, 1 relay READY and terminals for electric
connection.
Sourcing board
for single-phase version
(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.
Switching unit for 3-phase electric motors
- reversing relays, contactors or
contactless switching
(SSR).
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:
-
Module 3, or 6 additional relays (8).
- Local electric control module equipped with 2-line LCD display (fig. 7).
Содержание Rematic STR 1PA
Страница 10: ...8 STR 1PA STR 2PA Fig 1 1 5 2 4 3 8 7 6...
Страница 11: ...STR 1PA STR 2PA 9 Fig 1A 4 8 2 7 6 1 5...
Страница 21: ...STR 1PA STR 2PA 19 INTERNAL PROTECTION TERMINAL WITH MODBUS PROTOCOL Fig 2d Fig 2e FUSE F4 1 FUSE F4 2...
Страница 42: ...40 STR 1PA STR 2PA 6 Enclosures 6 1 Wiring diagrams ES STR 1PA and STR 2PA for single phase supply...
Страница 43: ...STR 1PA STR 2PA 41 6 2 Wiring diagrams ES STR 1PA for three phase supply...
Страница 44: ...42 STR 1PA STR 2PA 6 3 Wiring diagrams ES STR 2PA for three phase supply...
Страница 45: ...STR 1PA STR 2PA 43 6 4 Wiring diagrams ES STR PA for three phase supply without reverse unit...
Страница 46: ...44 STR 1PA STR 2PA 6 5 Wiring diagrams ES STR 2PA for three phase supply with contactless switching...
Страница 47: ...STR 1PA STR 2PA 45...
Страница 48: ...46 STR 1PA STR 2PA 6 6 Wiring diagrams EA STR PA with interface Modbus Profibus for single phase supply...
Страница 49: ...STR 1PA STR 2PA 47 6 7 Wiring diagrams EA STR 1PA with interface Modbus Profibus for three phase supply...
Страница 50: ...48 STR 1PA STR 2PA 6 8 Wiring diagrams EA STR 1PA with interface Modbus Profibus for three phase supply...
Страница 54: ...52 STR 1PA STR 2PA 6 10 Dimensional drawings STR 1PA P 1169 Flange DIN 3358...
Страница 55: ...STR 1PA STR 2PA 53 P 1170 Pillars...
Страница 56: ...54 STR 1PA STR 2PA...
Страница 57: ...STR 1PA STR 2PA 55 P 2046 EA with local control...
Страница 58: ...56 STR 1PA STR 2PA 6 11 Dimensional drawings STR 2PA...
Страница 59: ...STR 1PA STR 2PA 57...
Страница 61: ...STR 1PA STR 2PA 59...
Страница 62: ...60 STR 1PA STR 2PA...
Страница 63: ...STR 1PA STR 2PA 61...
Страница 64: ...62 STR 1PA STR 2PA P 2047 Version with local electric control...