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Grundfos LC 108, Инструкция по установке и эксплуатации

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English (GB)

18

7. Systems with 2 electrodes

Description (see also page 

43

 or 

44

):

The pump is controlled by the liquid level in the borehole. 
• The electrode, pos. 1, is the reference electrode.
• When the electrode, pos. 2, registers liquid, the "waiting time" 

is initiated (can be set). After expiration of the waiting time, the 
pump is started.

• The pump is stopped when the electrode, pos. 2, does

 not 

register any liquid. 

• The pressure switch, pos. 3, stops the pump if the discharge 

pressure exceeds the stop pressure of the pressure switch. 
Restarting at the starting pressure of the pressure switch is 
only effected if the electrode, pos. 2, registers liquid.

7.1 Electrical connection

2 electrodes, pages 

43

 and 

44

.

Fig. 

7

 on page 

43

.

The figures show all electrical connections required to connect 
the LC 108 for 

direct-on-line starting, 2 electrodes

.

Fig. 

8

 on page 

44

.

The figure shows all electrical connections required to connect 
the LC 108 for 

star-delta starting, 2 electrodes

. 

The operating voltage and frequency are marked on the controller 
nameplate. Make sure that the controller is suitable for the 
electricity supply on which it will be used. 
All cables/wires must be fitted through the Pg cable entries and 
gaskets (IP65).
Maximum back-up fuse is stated on the controller nameplate.
If required according to local regulations, an external mains 
switch must be installed.

Single-phase motors must be connected to an external operating 
capacitor and in certain cases also to a starting capacitor. 
Further details can be found in the installation and operating 
instructions for the pump in question.

The pressure switch, pos. 3, must be connected as an NC 
contact.

Key to the symbols in fig.  

7

 on page 

43

 and fig. 

8

 on page

44

:

7.2 Setting

2 electrodes, pages 

43

 and 

44

.

The CU 211 module has a 10-pole DIP switch in the bottom right 
corner, see fig. 

14

.

The DIP switch setting offers the following possibilities:
• selection of starting delay and automatic test run (switch 4),
• setting of waiting time (switches 5, 6, 7 and 8),
• selection of automatic alarm resetting (switch 9),
• selection of automatic restarting (switch 10).

Fig. 14

Set the DIP switch as shown in fig. 

14

.

Each individual switch (1 to 10) of the DIP switch can be set to 
position OFF or ON.

Warning
Before starting any work on pumps used to pump 
liquids which could be constituted as being 
hazardous to health, thorough cleaning/venting of 
pumps, pits, etc. must be carried out according to 
local regulations.
Before making any connections in the LC 108 or 
work on pumps, pits, etc., it must be ensured that the 
electricity supply has been switched off and that it 
cannot be accidentally switched on. 

Warning
Before starting work on the system, switch off the 
supply voltage and lock the mains switch in position 
0.
Any external voltage connected to the system must 
be switched off before work is started.

Warning
The LC 108 must be connected in accordance with 
the rules and standards in force for the application in 
question.

Caution

If the PTC resistance/thermal switch of the motor is 
connected, the factory-fitted short-circuit jumper 
must be removed (terminals T11-T21). 

Warning
Float switches or electrodes placed in an explosion 
hazard area must be connected via an EEx barrier, 
e.g. Grundfos number 96440300. The EEx barrier 
must not be installed in the explosion hazard area.
Equipment used in explosion hazard areas must in 
each individual case have been approved for this 
particular application. Furthermore, the cables into 
the explosion hazard area must be laid in 
accordance with local regulations.

Note

The motor/pump housing must not be used as 
reference electrode.

Pos. Description

Terminal 

number

1

Reference electrode.

11

2

Electrode for start/stop of pump.

12

3

Pressure switch.

41-42

Caution

The controller must be off circuit to ensure the 
correct configuration during start-up after change of 
the DIP switch setting.

TM

04 234

2 230

8

Note

The DIP switch must not be set to other switch 
combinations than those described in this section.

Содержание LC 108

Страница 1: ...LC 108 Installation and operating instructions GRUNDFOS INSTRUCTIONS LC 108...

Страница 2: ...22 8 1 Electrical connection 22 8 2 Setting 22 8 3 Control panel 24 8 4 Battery back up functions 24 8 5 Reset button and ON OFF AUTO selector switch 25 9 Systems for filling applications 26 9 1 Elec...

Страница 3: ...ion 6 Systems with 4 float switches Electrodes can also be used Section 7 Systems with 2 electrodes Section 8 Systems with 3 electrodes Section 9 Systems for filling applications Section 10 Systems fo...

Страница 4: ...r delta starting Fig 3 TM01 6867 2308 TM01 6868 2308 Pos Description 1 Module CU 211 2 Terminal block for level inputs 11 12 21 22 31 32 41 42 3 Terminal block with input for the PTC resistance therma...

Страница 5: ...pply 6 Fuse holders for control circuit fuses 2 or 3 depending on voltage variant 7 Isolating transformer 8 Terminal block for connection of pump 9 Pg cable entries 10 Earth bar PE 11 Input for the PT...

Страница 6: ...d in this section This setting determines the actual application type 2 float switches pages 37 and 38 At this setting the start up is delayed within the range from 0 to 255 sec random after the elect...

Страница 7: ...the controller may arise In such cases it is recommended to use float switches AC 1 2 13 18 VAC 0 V AC DC G 3 4 AC 1 2 13 18 VAC 0 V AC DC G 3 4 AC 1 2 12 VDC 0 V AC DC G 3 4 TM01 6425 3902 Pos Descri...

Страница 8: ...econd orange indicator light from the top will be permanently on If the starting delay function and automatic test run were selected switch 4 of the DIP switch the start up will be delayed after the e...

Страница 9: ...ntly the pump cannot be started when the PTC resistance thermal switch of the motor registers overtemperature OFF middle position The pump cannot start when the selector switch has been set to this po...

Страница 10: ...0 Fig 8 Set the DIP switch as shown in fig 8 Each individual switch 1 to 10 of the DIP switch can be set to position OFF or ON Warning Before starting any work on pumps used to pump liquids which coul...

Страница 11: ...ined This setting ensures automatic resetting of alarm signals to external alarm devices and the built in buzzer However an alarm signal will only be reset if the cause of the fault no longer exists A...

Страница 12: ...is on the indicator light is flashing TM01 6425 3902 Pos Description 1 Green indicator light indicating starting delay flashing and pump operation permanently on 2 Red indicator light indicating pump...

Страница 13: ...ntly the pump cannot be started when the PTC resistance thermal switch of the motor registers overtemperature OFF middle position The pump cannot start when the selector switch has been set to this po...

Страница 14: ...5 6 and 7 selection of automatic alarm resetting switch 9 selection of automatic restarting switch 10 Fig 11 Set the DIP switch as shown in fig 11 Warning Before starting any work on pumps used to pu...

Страница 15: ...with the actual application 4 float switches pages 41 and 42 but this setting must be maintained This setting ensures automatic resetting of alarm signals to external alarm devices and the built in b...

Страница 16: ...dicator light indicating starting delay flashing and pump operation permanently on 2 Red indicator light indicating pump fault Flashing Fault in PTC resistor thermal switch On Fault in motor protectiv...

Страница 17: ...ntly the pump cannot be started when the PTC resistance thermal switch of the motor registers overtemperature OFF middle position The pump cannot start when the selector switch has been set to this po...

Страница 18: ...s selection of starting delay and automatic test run switch 4 setting of waiting time switches 5 6 7 and 8 selection of automatic alarm resetting switch 9 selection of automatic restarting switch 10 F...

Страница 19: ...r However an alarm signal will only be reset if the cause of the fault no longer exists At this setting the alarm signal must be reset manually by means of the reset button the reset button is describ...

Страница 20: ...the indicator light is off the indicator light is on the indicator light is flashing TM01 6413 2299 TM01 6424 2399 Pos Description 1 Green indicator light indicating starting delay flashing and pump...

Страница 21: ...ntly the pump cannot be started when the PTC resistance thermal switch of the motor registers overtemperature OFF middle position The pump cannot start when the selector switch has been set to this po...

Страница 22: ...restarting switch 10 Fig 18 Set the DIP switch as shown in fig 18 Each individual switch 1 to 10 of the DIP switch can be set to position OFF or ON Set the switches 1 to 10 as follows Switches 1 2 an...

Страница 23: ...m signal will only be reset if the cause of the fault no longer exists At this setting the alarm signal must be reset manually by means of the reset button the reset button is described in section 8 5...

Страница 24: ...indicator light is on the indicator light is flashing TM01 6413 2299 TM01 6424 2399 Pos Description 1 Green indicator light indicating starting delay flashing and pump operation permanently on 2 Red...

Страница 25: ...ntly the pump cannot be started when the PTC resistance thermal switch of the motor registers overtemperature OFF middle position The pump cannot start when the selector switch has been set to this po...

Страница 26: ...g 22 Set the DIP switch as shown in fig 22 Each individual switch 1 to 10 of the DIP switch can be set to position OFF or ON Set the switches 1 to 10 as follows Switches 1 2 and 3 application type Whe...

Страница 27: ...alarm signal will only be reset if the cause of the fault no longer exists At this setting the alarm signal must be reset manually by means of the reset button the reset button is described in section...

Страница 28: ...indicator light is flashing TM01 6413 2299 TM01 6424 2399 Pos Description 1 Green indicator light indicating starting delay flashing and pump operation permanently on 2 Red indicator light indicating...

Страница 29: ...the pump cannot be started when the PTC resistance thermal switch of the motor registers overtemperature OFF middle position The pump cannot start when the selector switch has been set to this positi...

Страница 30: ...h in the bottom right corner see fig 26 The DIP switch setting offers the following possibilities setting of dead time switches 4 5 and 6 setting of restarting time switches 7 8 9 and 10 Fig 26 Set th...

Страница 31: ...No restarting 15 min 1 min 17 min 2 min 20 min 3 min 25 min 5 min 30 min 7 min 50 min 10 min 70 min 12 min 90 min TM02 5747 3902 Operation with electrodes and float switches Selector switch in positi...

Страница 32: ...or light indicating starting delay flashing and pump operation permanently on 2 Red indicator light indicating pump fault Flashing Fault in PTC resistor thermal switch On Fault in motor protective cir...

Страница 33: ...onsibility to decide how long the pump is to run with this fault indication Over a long period the pump will be damaged OFF middle position The pump cannot start when the selector switch has been set...

Страница 34: ...possible deposits sludge build up in the pump pit tank Sludge may settle in areas with almost stagnant liquid Check for beginning sludge build up around the float switches electrodes or the flow swit...

Страница 35: ...tarting Fine wire fuse 250 mA F 32 mm x 6 Star delta starting Fine wire fuse 1 A F 32 mm x 6 Ambient temperature During operation 30 to 50 C must not be exposed to direct sunlight In stock 30 to 60 C...

Страница 36: ...e pos 6 in fig 1 or fig 3 d The motor protection relay has cut out the pump the red indicator light for pump fault is permanently on Check the pump pit e The PTC resistance thermal switch has cut out...

Страница 37: ...1 1 3 Fig 1 TM01 6882 1808 T11 T21 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 M LC 108 ON DIP 2 1 1 2 3 4 5 6 7 8 9 10 Ext max 230V max 2A TM01 4864 1808 U1 N1 1U2 1N2 TM01 4862 1808 U1...

Страница 38: ...endix 38 Fig 2 TM01 7871 1808 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 U1 V1 W1 N1 1U2 1V2 1W2 2W2 2U2 2V2 T11 T12 LC 108 ON DIP 2 1 1 2 3 4 5 6 7 8 9 10 Ext L1 L2 L3 N PE max 230V max...

Страница 39: ...pendix 39 1 3 Fig 3 TM01 6619 1808 T11 T21 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 M LC 108 3 2 1 Ext max 230V max 2A TM01 4864 1808 U1 N1 1U2 1N2 TM01 4862 1808 U1 V1 W1 N1 1U2 1V2 1W...

Страница 40: ...ndix 40 Fig 4 TM01 8128 1808 U1 V1 W1 N1 1U2 1V2 1W2 2W2 2U2 2V2 T11 T12 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 ON DIP 2 3 1 1 2 3 4 5 6 7 8 9 10 Ext L1 L2 L3 N PE max 230V max 2A LC...

Страница 41: ...Appendix 41 1 3 Fig 5 TM01 6620 1808 T11 T21 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 max 230V max 2A TM01 4864 1808 U1 N1 1U2 1N2 TM01 4862 1808 U1 V1 W1 N1 1U2 1V2 1W2...

Страница 42: ...dix 42 Fig 6 TM01 8126 1808 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 U1 V1 W1 N1 1U2 1V2 1W2 2W2 2U2 2V2 T11 T12 ON DIP 2 3 4 1 1 2 3 4 5 6 7 8 9 10 Ext L1 L2 L3 N PE max 230V max 2A LC...

Страница 43: ...Appendix 43 1 3 Fig 7 TM01 6621 1808 T11 T21 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 max 230V max 2A TM01 4864 1808 U1 N1 1U2 1N2 TM01 4862 1808 U1 V1 W1 N1 1U2 1V2 1W2...

Страница 44: ...x 44 Fig 8 TM01 8127 1808 U1 V1 W1 N1 1U2 1V2 1W2 2W2 2U2 2V2 T11 T12 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 ON DIP 2 3 1 1 2 3 4 5 6 7 8 9 10 Ext L1 L2 L3 N PE NC PE max 230V max 2A...

Страница 45: ...ndix 45 1 3 Fig 9 TM01 6622 1808 T11 T21 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 LC 108 Ext M 1 2 3 4 max 230V max 2A TM01 4864 1808 U1 N1 1U2 1N2 TM01 4862 1808 3 U1 V1 W1 N1 1U2 1V2...

Страница 46: ...x 46 Fig 10 TM01 8129 1808 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 U1 V1 W1 N1 1U2 1V2 1W2 2W2 2U2 2V2 T11 T12 ON DIP 2 3 1 1 2 3 4 5 6 7 8 9 10 Ext L1 L2 L3 N PE NC PE max 230V max 2A...

Страница 47: ...Appendix 47 1 3 Fig 11 TM01 6623 1808 T11 T21 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 max 230V max 2A 3 2 1 TM01 4864 1808 U1 N1 1U2 1N2 TM01 4862 1808 U1 V1 W1 N1 1U2 1V2 1W2...

Страница 48: ...48 Fig 12 TM01 8130 1808 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 U1 V1 W1 N1 1U2 1V2 1W2 2W2 2U2 2V2 T11 T12 ON DIP 1 2 3 4 5 6 7 8 9 10 Ext NC 5 L1 L2 L3 N PE 1 2 3 PE LC 108 max 230...

Страница 49: ...Appendix 49 1 3 Fig 13 TM01 6624 1808 T11 T21 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 max 230V max 2A TM01 4864 1808 U1 N1 1U2 1N2 TM01 4862 1808 U1 V1 W1 N1 1U2 1V2 1W2...

Страница 50: ...dix 50 Fig 14 TM01 8131 1808 H NO H COM H NC G NO G COM G NC 11 12 21 22 31 32 41 42 U1 V1 W1 N1 1U2 1V2 1W2 2W2 2U2 2V2 T11 T12 ON DIP 1 2 3 4 5 6 7 8 9 10 Ext 1 2 L1 L2 L3 N PE LC 108 PE max 230V ma...

Страница 51: ...ring betrekking heeft in overeenstemming zijn met de Richtlijnen van de Raad in zake de onderlinge aanpassing van de wetgeving van de EG Lidstaten betreffende PL Deklaracja zgodno ci WE My Grundfos o...

Страница 52: ...52...

Страница 53: ...428 5005 Korea GRUNDFOS Pumps Korea Ltd 6th Floor Aju Building 679 5 Yeoksam dong Kangnam ku 135 916 Seoul Korea Phone 82 2 5317 600 Telefax 82 2 5633 725 Latvia SIA GRUNDFOS Pumps Latvia Deglava biz...

Страница 54: ...9289 The name Grundfos the Grundfos logo and be think innovate are registered trademarks owned by Grundfos Holding A S or Grundfos A S Denmark All rights reserved worldwide Copyright Grundfos Holding...

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