11
DMS2 ED SYSTEM
Basic outfit of the DMS2 ED electronics:
Position control unit
– main part of the system DMS2 ED – includes microcomputer, position
sensor, 3 signal lamps LED, 4 push-buttons for simple setting and checking
the actuator, connectors for connecting the torque sensor, source board,
and interface RS 232
(connection of computer for setting and diagnostics).
Source unit
– electronic power supply, user's terminal board
(connection of power
supply and control signals),
2 torque relays, 2 position relays, 2 signal-
ling relays, 1 relay for signalling errors
(READY),
switch of resistance
anti- condensation heater and its thermostatic control, connectors for
connecting the control unit and analog CPT module.
Torque sensor
– provides contactless torque sensing
Optional outfit of the DMS2 ED electronics:
Analog module
– output of feed-back signal 4 – 20 mA, in version CONTROL input of
control signal 0/4 – 20 mA
LCD display
– communication, position indicator
Local control
Reversing relays
– for three-phase motors
Technical parameters of the DMS2 ED electronics:
Scanning of position
contact-less, magnetic
Scanning of torque
contact-less, magnetic
Working stroke see
90°
Torque blocking
0 – 20 s at reversing in limit positions
Input signal
0
(4)
– 20 mA, 20 – 0
(4)
mA with switched on regulator function
Local/Remote control, Local open/close
Output signal
7 x relay 250 V AC, 3 A
(MO, MZ, PO, PZ, SO, SZ, READY)
Position signal 4 – 20 mA, max. 500
Ω
, active/passive, galvanic-isolated,
2x12 character LED display
Power supply of electronic
230 V AC, 50 Hz, 4 W, over-voltage category II
Design of DMS2 ED electronics:
Replacement of electromechanical board – the provided relay contacts substitute position, torque and signalling micro-
switches; current feed-back signal 4 – 20 mA can also be brought out; the
actuator is controlled by the superior control system with signals
“open“
and
“close“.
CONTROL
– the electronics covers also function of the regulator; the output shaft
position is controlled by analog input signal.
Function and setting of output relays
The output relays replace end-limit micro-switches; to some extent, function of the output relays differs according to
chosen mode of electronics or it can be selected, preferably by the setting program.
Setting program – allows to select multiple authorization levels
(user, service, manufacturing
) and thereby change
various parameters of the electronic equipment.
Setting program – is same for communication with the electronics DMS2ED and DMS2. The users' version can
be freely downloaded. The next level of approval is given by the HW key, which must be connected to the computer.
Program is modified to leading the user by excluding the impossible variants.
