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IM-P693-02 

EMM Issue 2

15

 LCR2251 Level Controller

5.6 Setting parameters

Fig. 8

Start

Action

Display

Function

Switch on supply voltage. Water level 

between MIN and MAX.

7-segment display shows software 

version and the type of equipment.

System test, takes approx. 3 sec.

7-segment display shows actual value

System switches to operating mode

Setting parameters

Action

7-segment display

Function

Press the up or down button until desired 

parameter is shown

Display toggles between parameter and 

saved value.

Selecting the parameter

Press and hold the ok

First digit (000

0

) flashes.

Parameterization mode active. You can 

change the first digit.

Press the up or down button

A new value is displayed.

Pressing the up button increases the 

value, pressing the down button reduces 

the value.

Briefly press ok button

2nd, 3rd or 4th digit flashes (from right 

to left).

2nd, 3rd or 4th digit can now be changed 

using the up and down buttons. Pressing 

the up button increases the value, 

pressing the down button reduces the 

value.

When your entries are complete: press 

and hold the ok button within 3 sec.

done is displayed.

Next, the display toggles between the 

parameter and the new value.

Input is confirmed. System switches back 

to the parameter.

If you do not confirm your entry within 

3 sec. or you do not make any further 

entries:

quit is briefly displayed.

After this, the display toggles between 

the parameter and the old value.

If you do not confirm, your entries 

will not be applied. Please repeat the 

procedure. If you do not confirm, the 

system switches back to the parameter.

Press the up or down button until the next parameter is shown. 

Or press the up or down button until the actual value is displayed.

Or after 30 s, the actual value is displayed automatically.

Pump/Control Valve Status

LED amber

MIN LED red

7-segment display

MAX LED red

Push buttons

Summary of Contents for LCR2251

Page 1: ...tion and Maintenance Instructions IM P693 02 EMM Issue 2 850144 01 1 Safety information 2 General product information 3 Mechanical installation 4 Electrical installation 5 Commissioning 6 Fault findin...

Page 2: ...equipment Do not commission or operate any item of equipment that does not have its own specific name plate Directives and standards VdT V Bulletin Wasserstand 100 Water Level 100 The LCR2251 level c...

Page 3: ...roportional plus integral control PI controller In the event of deviations from the setpoint it outputs a current of 4 20 mA as manipulated variable Y Alternatively the controller can be configured to...

Page 4: ...ns approximate in mm 120 46 74 Item 1 Upper terminal strip 2 Lower terminal strip 3 Housing 4 Support rail TH 35 EN 60715 Fig 2 3 2 Installation in control cabinet The LCR2251 level controller is clip...

Page 5: ...P LOOP 3 3 Name plates Fig 3 Type designation Top Bottom Safety information Manufacturer Degree of protection External fuse for output contacts Ambient temperature Output contacts Actual value output...

Page 6: ...us controller 3 MAX output contact de energizing delay 3 seconds 4 Supply voltage connection 24 Vdc with semi delay fuse 0 5 A provided on site 5 Output 4 20 mA manipulated variable Y for continuous c...

Page 7: ...control cable with a minimum conductor size of 0 5 mm2 e g LiYCY 2 x 0 5 mm2 maximum length 100 m Wire the terminal strip as shown in the wiring diagram see Fig 4 Connect the screen as shown in the wi...

Page 8: ...the equipment please use a screened multi core control cable with a minimum conductor size of 0 5 mm2 e g LiYCY 2 x 0 5 mm2 maximum length 100 m Connect the screen as shown in the wiring diagram Impo...

Page 9: ...troller Proportional band Pb 20 of setpoint continuous controller only Integral action time ti 0 s continuous controller only Dead band 5 of setpoint factory set Filter 2 s Fill control function Code...

Page 10: ...tch off the supply voltage Remove the lower terminal strip Fig 5 Insert a screwdriver between the terminal strip and the front frame to the right and left of the arrow markings Release the terminal st...

Page 11: ...2 S 3 S 4 Not used OFF ON Not used OFF Input for connection of level transmitter LP20 LP21 PA420 ON Fill control OFF Discharge control ON Continuous PI controller OFF On Off level controller ON grey...

Page 12: ...output relays FiLt Filter Used to dampen the effects of turbulent water level Continuous PI controller S4 OFF AL Hi Alarm High MAX switchpoint adjustable between 0 and 100 AL Lo Alarm Low MIN switchpo...

Page 13: ...ted in parameterization mode quit Confirm Input is not confirmed done Done Input is confirmed Indicated if malfunctions occur E 005 Error Faulty level transmitter measuring current too low E 006 Error...

Page 14: ...oint SP 80 of measuring range 160 mm Proportional band Pb 20 of setpoint 16 32 mm If the measuring range is 100 200 mm and the setpoint is 80 160 mm the proportional range will be 16 32 mm or in the r...

Page 15: ...digit flashes from right to left 2nd 3rd or 4th digit can now be changed using the up and down buttons Pressing the up button increases the value pressing the down button reduces the value When your e...

Page 16: ...en 0 100 Please take the settings for MIN MAX switchpoints into consideration Setting the proportional band continuous control only Select parameter Pb enter and save the desired percentage Proportion...

Page 17: ...exceeded the pump on switchpoint Pump LED lights up amber Pump output contacts 19 20 closed Water level reached or exceeded the pump off switchpoint Pump LED do not light up amber Pump output contact...

Page 18: ...second MIN output contact 16 18 open 17 18 closed MAX output contact 21 23 open 22 23 closed MIN LED flashes red De energizing delay in progress MIN LED lights up red for 3 seconds MIN output contact...

Page 19: ...ck level transmitter and replace if necessary Check electrical connection E 006 Faulty level transmitter measuring current 20 mA Check level transmitter and replace if necessary Check electrical conne...

Page 20: ...y equipment Suppress HF interference using hinged shell ferrite rings 6 3 Replacing taking the equipment out of service Switch off the power supply and cut off power to the equipment Remove the upper...

Page 21: ...ation Housing Housing material base black polycarbonate front grey polycarbonate Conductor size 1 x 4 0 mm2 solid per wire or 1 x 2 5 mm2 per lead with sleeve to DIN 46228 or 2 x 1 5 mm2 per lead with...

Page 22: ...resentative Ensure all items are suitably packed for transit preferably in the original cartons Please provide the following information with any equipment being returned 1 Your name company name addr...

Page 23: ...IM P693 02 EMM Issue 2 23 LCR2251 Level Controller...

Page 24: ...IM P693 02 EMM Issue 2 24 LCR2251 Level Controller Spirax Sarco Ltd Runnings Road Cheltenham GL51 9NQ United Kingdom www spiraxsarco com...

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