10
and monitored by a computer with controlling program
(set parameter can be backed up on a computer)
or
manually without a computer
(for the electronics DMS2, parameters can be manually set and it can be checked
without computer only if the system is equipped with a display and local control).
They contain diagnostic
functions – error messages on the display, memory of recent failures and number of occurrences of respective
failures.
The more simple system
DMS2 ED substitutes the electro-mechanical board and/or provides for controlling
the electric actuator by input analog signal as in the version Control.
The system
DMS2 enables the electric actuator to be used for two-position and three-position regulation or to
be connected to the industrial bus bar Profibus.
DMS2 ED
Basic outfit:
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).
Torque unit
Power supply
electronic power supply, user's terminal board
(connection of power supply
and control signals),
2 torque relays, 2 position relays, 2 signalling relays,
1 relay for signalling errors
(READY),
switch of resistance anti-condensation
heater, connectors for connecting electronic brake, resistance heater of analog
module, and connector for interconnection with the control unit.
Optional outfit:
Analog module
output of feed-back signal 4 – 20 mA, in version CONTROL input of control
signal 0/4 – 20 mA
Position indicator
LED display
Local control
Contractors or contactless unit
Electronic brake
(Actuator Type No. 52260 can not be produced in versions with electronic brake.)
Parameters:
Scanning of position
contact-less, magnetic
Scanning of torque
contact-less, magnetic
Working stroke see
Tables 1, 2, 3
Torque blocking
0 – 20 s at reversing in limit positions
Input signal
0(4) – 20 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 ohm, active/passive, galvanic-isolated,
LED display
Power supply of electronic
230 V AC, 50 Hz, 4 W, over-voltage category II
Realization:
Replacement of electric
the provided relay contacts substitute position, torque and signalling micro-
switches mechanical board 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.
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