ZPA Pecky, a.s. MODACT MO EE 52 120, Монтаж и эксплуатация

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The sensor of the output shaft position is absolute and does not require any backup power supply in case
supply voltage is disconnected during operation of the electric actuator. Both systems can be set 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 com-
puter for setting and diagnostics).
Torque unit
Source unit 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
Contactors or contact-less block
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, electronic brake control
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 contro-
lled 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.