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Final Control Elements
MINI-TOP ELECTRONIC ACTUATOR
(rotary type)
Functions & Features
• Small-size control valve actuator
• Electrical positioner incorporated
• 1/1000 high resolution
• Easy adjustment: electronic limiter at the valve open &
closed positions
• Overload protection
• Various power inputs
• CE marking available for 24 V DC power
Typical Applications
• Actuator for automatic control valve in pilotplants
• Air-conditioning in buildings or plants
• Micro-flow control for pharmaceutical injection
• For small-size control valves
MODEL: MRP4–[1][2][3][4]–[5][6][7]
ORDERING INFORMATION
• Code number: MRP4-[1][2][3][4]-[5][6][7]
Specify a code from below for each [1] through [7].
(e.g. MRP4-14LT-A0R)
• Special input range (for codes Z and 0)
[1] SPAN
1: 45 to 90 degrees
2: 90 to 180 degrees
[2] OPERATION TIME, TORQUE
4: 7 seconds / 90°, 5 N·m
5: 13 seconds / 90°, 5 N·m
[3] SEQUENTIAL CONTROL SIGNALS
L: Full-open/-closed signal
F: Forced open/close signal
B: Full-open/-closed and forced open/close signals
SEN TRONIC
AG
Produkte, Support und Service
(Select 'With Terminal Box.')
E: Full-closed/overload signal (Not selectable for CE)
0: Without
[4] TERMINAL BOX
T: With
0: Without
[5] INPUT
Current
A: 4 – 20 mA DC (Input resistance 250 Ω)
Z: Specify current (See INPUT SPECIFICATIONS)
Voltage
6: 1 – 5 V DC (Input resistance approx. 1 MΩ)
0: Specify voltage (See INPUT SPECIFICATIONS)
[6] CE MARKING
C: With
0: Without
[7] POWER INPUT
AC Power
K3: 100 – 120 V AC
(Operational voltage range 90 – 132 V, 47 – 66 Hz)
(Not selectable for CE)
L3: 200 – 240 V AC
(Operational voltage range 180 – 264 V, 47 – 66 Hz)
(Not selectable for CE)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
GENERAL SPECIFICATIONS
Degree of protection: IP55
Action: Direct or reverse; field selectable with DIP switches
(factory set to "reverse")
(In "reverse" action, the output stem seen from the cover
turns counterclockwise with an input signal increase.)
Operation at abnormally low input: Counterclockwise turn,
clockwise turn or stop; field selectable with DIP switches
(factory set to"clockwise")
Note: Counterclockwise or clockwise if seen from the cover.
Detectable input drop level: -16 ±2.5 %
Electrical connection
•No terminal box
Wiring conduit: G 1/2 female; cable connector with 1 meter
wire (0.5 mm
•Terminal box
Wiring conduit: G 1/2 female (two)
Terminal screws: M3 pillar terminal
Rugghölzli 2
Tel. +41 (0)56 222 38 18
CH - 5453 Busslingen
Fax +41 (0)56 222 10 12
MODEL: MRP4
2
) provided
mailbox@sentronic.com
www.sentronic.com

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Summary of Contents for M-system MRP4

  • Page 1 MODEL: MRP4–[1][2][3][4]–[5][6][7] R: 24 V DC (Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) ORDERING INFORMATION • Code number: MRP4-[1][2][3][4]-[5][6][7] GENERAL SPECIFICATIONS Specify a code from below for each [1] through [7]. Degree of protection: IP55 (e.g. MRP4-14LT-A0R) Action: Direct or reverse;...
  • Page 2: Input Specifications

    (signal or power to metallic housing) OUTPUT SPECIFICATIONS • Operation Time & Torque (at rated power voltage) STANDARDS & APPROVALS MRP4-x4: 7 sec. / 90°; torque 5 N·m (3.69 ft·lbs) CE conformity: MRP4-x5: 13 sec. / 90°; torque 5 N·m (3.69 ft·lbs) EMC Directive (2004/108/EC) •...
  • Page 3 MODEL: MRP4 When an overload is detected, the Mini-Top stops supplying power to the motor and the status LED blinks in 0.5 sec. intervals. The protection is reset automatically with applying opposite- direction input signal or turning the power off and restarting.
  • Page 4: Terminal Connections

    MODEL: MRP4 TERMINAL CONNECTIONS black (1) POWER – white (2) red (3) INPUT green (4) COM1 POSITION OUTPUT (1 – 5V DC) yellow (5) blue (6) output stem output stem OVERLOAD FORCED FULL-OPEN or gray (7) turned CCW turned CCW...
  • Page 5 MODEL: MRP4 DIMENSIONS unit: mm (inch) 99 (3.90) ] for AC power supply 42 (1.65) 43 (1.69) 22 (.87) CABLE CONNECTOR w/1 meter (3.28 ft) LEADWIRE –0.043 46 (1.81) dia. 4–M5 10 (.39) deep YOKE CONNECTION 23 (.91) 12 (.47) dia.
  • Page 6 MODEL: MRP4 SCHEMATIC CIRCUITRY OVER LOAD FULL-CLOSED COM3 or OVERLOAD SIGNAL FULL-CLOSED FORCED OPEN/ COM1 CLOSE FULL-OPEN MODE COM2 SIGNAL DEADBAND SELECTOR LIMIT or FULL-CLOSED SIGNAL ADJ. RESTART TIMER INPUT Hi / Lo Motor Control Motor 4 – 20mA DC...
  • Page 7: Package Includes

    BEFORE USE ..• When installing the MRP outdoor or where it is exposed to rain or water drops, be sure to fasten the cable connector Thank you for choosing M-System. Before use, please check tightly and leave a slack of the cable. contents of the package you received as outlined below.
  • Page 8: Protective Functions

    MRP4 / MRP5 / MRP6 PROTECTIVE FUNCTIONS ■ OVERLOAD (LOCK) PROTECTION The MRP is equipped with a protection circuit against overload cause by for example valve catching an alien sub- stance. When an overload is detected, the MRP stops supplying power to the motor and the status LED flashes in 0.5 sec.
  • Page 9: Component Identification

    Cable Connector Manual Operation Stem Output Stem Position Indicator Output Stem Figure 1. MRP4 & MRP5 Component Identification Figure 2. MRP6 Component Identification Remark: Construction of the MRP5 is partly different from Remark: MRP6 is equipped with manual operation stem the above figure. and position indicator. Turn the stem in counterclockwise as viewed from the top of the actuator to close the valve (reverse action). Turn it slowly with a 6mm-width wrench...
  • Page 10 MRP4 / MRP5 / MRP6 OUTPUT SPAN ADJUSTABILITY INSTALLATION The servo-control circuit compares and amplifies input sig- The following is a general procedure for mounting the MRP nal (setpoint) and feedback signal from a potentiometer, and to a valve with a yoke and coupling. drives the motor to such direction to minimize difference of Be sure NOT TO CHANGE factory adjusted setting of the the two signals.
  • Page 11: Wiring Connection

    (8) turned CW turned CW (1) to (8): Terminal No. of terminal box. Full-open/-closed signals and forced open/close signals are optional. Full-closed/overload signals are optional only for model: MRP4. • With Both Full-open/closed Signal and Forced Open/Close Signal POWER –...
  • Page 12: Adjustment Procedure

    [ ]. Other adjustments which are paint locked are for factory Remark: Applying an over-torque to the adjustments may use only and should be changed only by qualified M-System destroy stoppers or other sections of them. Use a small- personnel. M-System is not liable for any malfunction or...
  • Page 13: Maintenance

    Replace rusted parts. Calibration. If the packing is damaged, replace it. Screws Check that screws and bolts are securely fastened. Re-tighten them. For repair or parts replacement, contact M-System or representatives. ■ LUBRICATION There is no need of oiling the MRP in normal operating conditions. ■ REGULAR TEST RUNNING If the valve is not frequently operated, run a test operation regularly (once a week, for example) to check proper functions.

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