Spirax Sarco LC2610 Installation And Maintenance Instructions Manual
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Spirax Sarco LC2610 Installation And Maintenance Instructions Manual

Level controller
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4028050/7
Installation and Maintenance Instructions
50% LEVEL
50% VALVE
LC2610
Printed in the UK
IM-P402-93 AB Issue 7
LC2610
Level Controller
1. General
safety information
2. General
product information
3. Typical applications
4. Setting the voltage
5. Mechanical
installation
6. Electrical
installation and
wiring diagrams
7. Menu familiarisation
8. Commissioning
- change mode
9. Maintenance
10. Fault finding
11. Settings table
12. Simplified menu
flow chart
IM-P402-93
AB Issue 7
© Copyright 2004
1

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Summary of Contents for Spirax Sarco LC2610

  • Page 1 4028050/7 IM-P402-93 AB Issue 7 LC2610 Level Controller Installation and Maintenance Instructions 1. General safety information 50% LEVEL 50% VALVE 2. General product information 3. Typical applications LC2610 4. Setting the voltage 5. Mechanical installation 6. Electrical installation and wiring diagrams 7.

  • Page 2: General Safety Information

    1. General safety information Your attention is drawn to Safety Information Sheet IM-GCM-10 as well as to any National or local regulations. Safe operation of the product depends on it being properly installed, commissioned and maintained by a qualified person in compliance with the operating instructions. It is essential to comply with general installation and safety instructions for pipeline and plant construction, as well as to make proper use of tools and safety equipment.

  • Page 3: General Product Information

    2.4 Outputs The LC2610's control signal can be configured / wired to work with a pump or a modulating control valve. It also provides relay outputs for high and low level alarms and can provide a 4 - 20 mA retransmission output.

  • Page 4: Typical Applications

    3. Typical applications The LC2610 can be configured to control the level of a boiler, tank or vessel, by operating a pump, valve or solenoid. The following diagrams show some typical applications:- 3.1 On/ off control: Pump control. Two alarm outputs.

  • Page 5: Modulating Control

    Modulating valve control using valve motor drive or 4 - 20 mA control signals. Two alarm outputs. 4 - 20 mA level output. Note: The 4 - 20 mA level output is only available when the LC2610 is configured for valve motor drive systems. Fig. 3...
  • Page 6 Probe mounted in boiler (in protection tube), or in external chamber. Feedback from steam meter. Feed forward from water meter. Note: The 4 - 20 mA level output is only available when the LC2610 is configured for valve motor drive systems. Fig. 4...

  • Page 7: Setting The Voltage

    4. Setting the voltage The controller is supplied with the voltage switch set to 230 V. The controller is suitable for operation at the following voltages (50 - 60 Hz):- 230 V setting 198 V - 264 Vac 115 V setting 99 V - 132 Vac Fuse type 20 mm cartridge...

  • Page 8: Mechanical Installation

    IP65 rating. LC2610 terminals must be enclosed within the panel. For the UL version, this must be a 'Type 1' enclosure. The LC2610 fits into a 137 x 67 mm panel cut-out, and is retained by the two clips and screws supplied: Ensure that the panel has sufficient depth to install the LC2610 and its wiring, including the space required to withdraw the wiring connectors.

  • Page 9: General Wiring Diagram

    6. Electrical installation and wiring diagrams 6.1 General wiring diagram (All relays shown in the power off position) Note: It is essential to select the correct sensitivity on the PA20 preamplifier, (see the PA20 Installation and Maintenance Instructions for details). Tighten the terminals to 0.8 N m (7 lbf in).
  • Page 10 Wiring diagram UL version PA20 preamplifier and LP20 capacitance probe (see PA20 and LP20 Installation and Maintenance Instructions) LC2610 controller Termination Screen Brown Orange Black See PA20 Installation and Maintenance Instructions for sensitivity selection. See CAUTION, Section 6.3. Flying leads supplied with PA20 (approximate 12")
  • Page 11 In this application, the earth (tank /boiler shell) is used as the common of the probe / preamplifier. It also provides a sink / drain for any electrical interference. Ensure that the screen is connected to the common of the LC2610 (terminal 7) and to the earth terminal of the PA20.
  • Page 12 6.4 Level inputs - options (All relays shown in the power off position) Note: It is essential to select the correct sensitivity on the PA20 preamplifier, (see the PA20 Installation and Maintenance Instructions for details). Input Fig. 9 PA20 preamplifier (0 - 6 V) input (Links on preamplifier provide sensitivity selection - see the preamplifier IMI for more information).
  • Page 13 6.5 Wiring - on / off control (All relays shown in the power off position) Note: It is essential to select the correct sensitivity on the PA20 preamplifier, (see Installation and Maintenance Instructions for details). Select Fuse 3 A max. voltage internally Control...
  • Page 14 6.6 Wiring - modulating control with 4 - 20 mA positioner (All relays shown in the power off position) Note: It is essential to select the correct sensitivity on the PA20 preamplifier, (see Installation and Maintenance Instructions for details). 4 mA always represents valve closed, and 20 mA represents valve open, regardless of whether 'pump in' or 'pump out' is selected.
  • Page 15 6.7 Wiring - modulating control (electric actuator with feedback potentiometer) (All relays shown in the power off position) Note: It is essential to select the correct sensitivity on the PA20 preamplifier, (see Installation and Maintenance Instructions for details). Select voltage internally Terminal block X 5 Fuse 3 A max.
  • Page 16 6.8 Steam meter input for 2 and 3 element control systems Externally powered 4 - 20 mA steam flowmeter CAUTION: Controller terminal 5 (steam meter -ve) may be earthed by level probe. Resistance between terminals 5 and 6 is 100 W. Fig.

  • Page 17: Alarm Relays

    6.10 Alarm relays (All relays shown in the power off position) Figures 17 and 18 are typical alarm circuit wiring diagrams. The fuse rating must not exceed 3 A. Controller and all relay mains supplies must be on the same phase. High Normal Alarm...

  • Page 18: Run Mode

    7. Menu familiarisation This Section explains how the controller functions are organised and enables the first time user to understand the purpose of the controller modes and settings. These are:- 7.1 Run mode This is the mode used for normal daily operation, and has two settings:- AUTO: This is the normal setting used once the controller has been commissioned.
  • Page 19 7.5 Changing the INPUT CODE The input code may be changed if required, as shown below. Note 1 :- If the controller is switched off while in MANUAL, an input code will be requested when the unit is switched on again. If the controller is switched off while in AUTO, the 'normal operational display' will appear when the unit is switched on again, and actual control will resume - see below.
  • Page 20 The operating modes are accessed as shown in the diagram. Use 'RUN MODE' 'DISPLAY' for familiarisation. Display settings:- Steam parameters only displayed when steam meter selected IM-P402-93 AB Issue 7...
  • Page 21 The controller is supplied with the following default settings:- • Security code • Control type Proportional • Pump action In (boiler water level control, for example) • Input level 0 - 6 V • Lvlinput O/rngdet (level input out of range detect) No •...

  • Page 22: 'Change' Mode

    8. Commissioning - change mode 8.0 'Change' mode This mode is only used to commission the controller. It allows the controller to be configured to suit the type of input, the type of control, as well as the type of control device (pump or valve) that will be used in the system.
  • Page 23 'Change' mode From page 20 'Display settings' To page 20 'Display settings' From page 24 'Changing settings' To page 24 'Changing settings' Press the 'right' button to enter change mode and display the first variable, 'CONTROL TYPE'. IM-P402-93 AB Issue 7...

  • Page 24: Changing Settings

    8.1 Changing settings From page 19 or 23 You may change any of the following variables by using the buttons. The system will not register any changes you have made until the button is pressed to 'Enter' the information. The system will always show you the last information that was entered.

  • Page 25: Input Level

    From 8.4 Input level page 24 Choose '0 - 6 V' for LP20 probe, or '4 - 20 mA' if required:- To page 24 8.5 Minimum level This is the minimum water level in the gauge glass, not the low alarm level, and defines the lowest point of reference for the system.
  • Page 26 From 8.6 Maximum level page 25 page 25 This is the maximum water level in the gauge glass, not the high alarm level, and defines the highest point of reference for the system. It is most unlikely that the level will be correct for a new system. Select 'Change' to allow manual control of the valve / pump as shown in the diagram.

  • Page 27: Control Band

    The LC2610 measures the height of any waves in the boiler automatically and compensates for their action. If possible, follow the boiler manufacturers advice on these levels. If not, a setting of about 15 % is a good starting point for many boilers:- Also see Figure 19, on page 22.

  • Page 28: Alarm Low

    8.10 Alarm low page 27 The low alarm relay is normally wired to sound an alarm, and, in many cases, to switch off the burner. Always consult the boiler manufacturer for From a recommended low alarm level. page 27 Note:- Additional low level alarms are normally fitted to the boiler. The alarm level is normally set below the lower limit of the 'CONTROL BAND', but above the 'MINIMUM LEVEL':- Also see Figure 19, on page 22.

  • Page 29: Alarm Delay

    8.12 Alarm delay From page 28 page 28 This avoids spurious alarm signals triggered by high water turbulence. Set the time to the shortest period that avoids 'false' alarm signals:- 8.13 Alarm lockout If 'No' is selected, the low alarm relay will only be de-energised (e.g.
  • Page 30 From page 29 8.14 Valve drive / 4 - 20 mA retransmission Select either 'Relay' or '4 - 20 mA' to suit the type of drive required:- To page 29 From water meter selection on page 32 To water meter selection on page 32 Note: If the 4 - 20 mA is selected, to drive a valve / positioner, the controller will output...
  • Page 31 8.15 Two and three element control for boilers These notes are included at this stage because the subsequent display sequence will vary according to the selections made:- Two element control When a sudden increase in steam demand occurs, boiler pressure will drop, and the steam bubbles in the water will expand.
  • Page 32 To page 30 From page 30 From page 34 To page 34 IM-P402-93 AB Issue 7...
  • Page 33 IM-P402-93 AB Issue 7...
  • Page 34 To page 32 From page 32 MAXIMUM STEAM MAXIMUM STEAM MAXIMUM STEAM IM-P402-93 AB Issue 7...
  • Page 35 ä To set-up mode on page 19 or 23 ä To set-up mode on page 19 or 23 IM-P402-93 AB Issue 7...

  • Page 36: Maintenance

    9. Maintenance The LC2610 needs no special servicing or maintenance. Boiler water level controls and alarms do, however, need regular testing and inspection. General guidance for the UK is given in Health and Safety Executive Guidance Note PM5. For specific instructions for Spirax Sarco systems see separate literature.

  • Page 37: Settings Table

    11. Settings table This Table shows all changeable options, and enables you to record the security code and settings you have chosen. It provides a convenient reference should future changes be required. Changeable options Default settings Your Changes (as supplied) settings CODE (security code) CONTROL TYPE-...
  • Page 38 12. Simplified menu flow chart 12.1 Main menu flow chart INCREMENTS DIGIT New code Enter Change code Steam flow ’M’ Steam offset Alarm delay ’M or A’ INPUT CODE CORRECT ? > High alarm Low alarm ’A’ Control band ’A’ Run Mode ’M or A’...
  • Page 39 Steam meter Water meter Valve drive Alarm lockout Alarm delay High alarm Low alarm Control band Set point Out of range Max level Run Mode < Auto Display > Min level Level input Level and Valve Pump action Set up Mode Control type <...
  • Page 40 12.2 Clear alarm lock-out flow chart See Section 8.13, page 29. Run Mode Display > < Auto Set up Mode < Manual Change > Change code INPUT CODE CORRECT ? > Run Mode Display > < Auto 50% LEVEL 50% VALVE IM-P402-93 AB Issue 7...

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