HORA MC250/24 - Default Chapter; Table of Contents

Content
Linear actuators MC250 • MC253 • MC500 • MC503
Operating Manual Version 2.1 - March 2011 3
Content
1 Safety .........................................................................4
1.1 Proper use ...............................................................4
1.2 Information for the operator ..................................... 4
1.3 Personnel................................................................. 5
1.4 Prior to starting work................................................5
1.5 During operation ...................................................... 5
1.6 Working environment...............................................5
2 Product Specification ............................................... 6
2.1 Components ............................................................ 6
2.2 Accessories ............................................................. 7
2.3 Operating modes .....................................................7
2.3.1 Continuous mode .........................................7
2.3.2 Three-point mode ......................................... 8
2.4 Functions .................................................................8
2.4.1 Binary signal / Frost protection function ....... 8
2.4.2 Lock detection .............................................. 8
2.4.3 Internal temperature monitoring ................... 8
2.4.4 Open-circuit detection...................................9
2.4.5 Set time ........................................................ 9
2.4.6 Hysteresis..................................................... 9
2.4.7 Manual mode and feedback signal............... 9
2.4.8 Autotest ...................................................... 10
2.4.9 Autopause .................................................. 10
2.4.10 Potential-free way-switch (optional extra)... 10
2.5 Technical data ....................................................... 10
2.6 Ratingplate............................................................. 11
3 Transport and storage ............................................ 11
4 Assembly .................................................................12
4.1 Check the scope of supply.....................................12
4.2 Prepare for installation........................................... 12
4.3 Mount linear actuator on valve...............................13
4.4 Fit/remove cover .................................................... 14
4.5 Connect the electrics ............................................. 15
4.5.1 Control-independent switching ................... 17
4.5.2 Remove printed circuit board cover............ 18
4.6 Optional extras installation..................................... 18
4.6.1 Way-switch printed circuit board
installation .................................................. 19
4.6.2 Fit the printed circuit board for mA
output signal. ..............................................20
5 Commissioning........................................................22
5.1 Operating parameters and coding switch
positions.................................................................22
5.2 Set input signal.......................................................23
5.3 Set actuating time ..................................................23
5.4 Set hysteresis.........................................................24
5.5 Set actuating direction............................................24
5.6 Set Autotest and Autopause ..................................24
5.7 Set limit position.....................................................25
5.8 Set potential-free way-switch .................................25
5.9 Initialise the path-measuring system......................27
5.10 Commissioning.......................................................28
6 Operation..................................................................29
6.1 Switching between Manual and
Automatic modes ...................................................29
6.2 LED display............................................................30
7 Maintenance, Care and Repairs .............................30
8 Spare parts...............................................................30
9 Shutdown and Disposal..........................................31
10 Troubleshooting ......................................................31
10.1 Troubleshooting .....................................................31
10.2 Operating faults checklist.......................................32