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Spirax Sarco LC2400, Installation And Maintenance Instructions Manual, Page: 3 / 12

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Spirax Sarco LC2400 Installation And Maintenance Instructions Manual Download Page 3

IM-P402-84  AB Issue 6

3

5. Wiring

Screened cable is recommended for the LC2400 wiring. The LC2400 is powered by the current
loops (4 -20 mA) and so needs no separate power supply. Figures 1 to 4, pages 4, 5, 6, and 7, show
the wiring connections for various applications.

Clamping screw

Steam potentiometer

Water potentiometer

Clamping screw

Green LED's

Summary of Contents for LC2400

Page 1: ...ler Installation and Maintenance Instructions IM P402 84 AB Issue 6 4025950 6 Printed in the UK Copyright 1999 1 Safety 2 Application 3 Description 4 Installation 5 Wiring 6 Commissioning 7 Calibratio...

Page 2: ...ystem uses an additional input from a water flowmeter to compensate for any variations in feedwater pressure 3 Description The Spirax Sarco LC2400 is used to connect a level controller to the4 20 mA o...

Page 3: ...the LC2400 wiring The LC2400 is powered by the current loops 4 20mA andsoneedsnoseparatepower supply Figures 1to 4 pages 4 5 6 and 7 show the wiring connections for various applications Clamping screw...

Page 4: ...ntrol relay Neutral Open Close Feedback input Feedback potentiometer 1 000 ohms Note Other actuators may have different connections Capacitance probe IN1 IN2 IN3 Connections to EL5600 series actuators...

Page 5: ...ller Fig 2 Two element level control with pneumatic valve Pneumatic valve with positioner Steam meter LC2400 Level controller LC2300 Live For range link see commissioning instructions Range link Test...

Page 6: ...o Feedback potentiometer is required Note Other actuators may have different connections Capacitance probe IN1 IN2 IN3 Connections to EL5600 Series actuators For link position and sensitivity see Prea...

Page 7: ...12 2 3 1 4 20 mA current loop 1 2 3 4 5 6 7 8 9 10 11 12 4 5 6 1 3 LC2300 Level controller LC2400 Steam meter Level probe Steam Fig 4 Three element level control with pneumatic valve Feedwater LC2300...

Page 8: ...ttom of the desired proportional band valve fully closed fully open position whichever is most convenient Adjust the LC2200 or LC2300 proportional band potentiometer until the 100 0 amber LED just lig...

Page 9: ...or a maximum flow of 12 000 kg h The output current of the meter for this size of boiler is Output current 8 000 kg h x 16 4 14 67 mA 12 000 g h Calculate the water calibration value with the followin...

Page 10: ...amplifier set to high sensitivity range link fitted Riseinwaterlevellessthan140mm PA20preamplifierset to mediumsensitivity rangelink fitted Preamplifier PA20 Medium sensitivity Preamplifier PA20 High...

Page 11: ...e LC2400 and use figure 6 If the anticipated water level rise is greater than 80 mm and the PA20 is set to high sensitivity or greater than 140 mm and the PA20 is set to medium sensitivity do not inse...

Page 12: ...nd Safety Executive Guidance Note PM5 For specific instructions for Spirax Sarco systems please see separate literature 9 Fault finding Green LED s not lit No supply from current loop present Loop con...

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