Installation, Operating & Maintenance Manual - …

1 Electronic Level Switch LIDEC 91 - 92 installation , Operating & Maintenance Manual SAS au Capital de 2 158 244 - 444 871 933 Bourges - APE : 2651B H eadquarter : 9 , r ue Isaac Newton - 180 00 Bourge s - France Electronic Level Switch installation , Operating & Maintenance Manual LIDEC 91 - 92 1st Edition Released February 2013 TABLE OF ONTENTS 1. UNPACKING AND INSPECTION .. 4 2. STORAGE .. 4 3. Operating PRINCIPLE .. 4 4. TECHNICAL SPECIFICATIONS .. 5 5. installation .. 6 6. OUTPUT RELAY 7 7. ELECTRICAL CONNECTIONS .. 8 Power supply 16 to 28 V 8 Cable specification.

2 8 Special precautions for the intrinsically safe installation Ex ia .. 8 connection .. 9 8. SETTING POINT ADJUSTMENT .. 9 9. ROUTINE Maintenance TEST .. 10 10. FAULT FINDING .. 11 11. ANNEX A .. 12 Doc No: NT401E Revision 09 ENG Electronic Level Switch LIDEC 91-92 installation , Operating & Maintenance Manual 4 1. UNPACKING AND INSPECTION 1. Before unpacking the LIDEC, inspect the box for damage caused during shipping. If any damage is found, contact the forwarding company and note protest until the LIDEC is tested. 2. Unpack carefully the LIDEC, and check visually if there is any mechanical damage. 3. The LIDEC identification is located on the body of the enclosure.

3 2. STORAGE Storage must be carried out using the original packing, in a dry and covered area. The LIDEC must be shock protected. Storage temperature: - 40 to + 80 C. 3. Operating PRINCIPLE The sensor type LIDEC detects High or Low level in any liquid, with an alarm output given by a current loop change (18 mA to 6 mA) or a dry contact. The LIDEC can be installed either horizontally or vertically. The principle is based on the absorption of mechanical waves at the tip of the probe. The mechanical waves are generated and detected by a piezo-electric ceramic. NOTE: Due to that principle, the probe must not be painted, it must be cleaned periodically when used with viscous liquid.

4 Lidec type Serial number Tag Doc No: NT401E Revision 09 ENG Electronic Level Switch LIDEC 91-92 installation , Operating & Maintenance Manual 5 The LIDEC provides a very safe operation, the circuitry includes a fail-safe detection which activates an alarm for the following: Level alarm, Electronic failure, Piezo-electric ceramic failure, Power supply failure. 4. TECHNICAL SPECIFICATIONS Power supply : 16 to 28 V DC (24 V DC nominal) Consumption : W Alarm output : - By current loop detection: (standard) * 18 mA when no liquid * 6 mA when liquid - By a dry contact ( or ): (optional) * Contact rating: 5 A / 28 Vcc Alarm setting : - Top mounting : at 5 mm ( 2mm) in water above the lowest part of the probe 8 mm diameter.

5 At 20mm (( 2mm) in water above the lowest part of the probe 14 mm diameter. - Horizontal mounting : the axis of the probe ( 2mm) in water. Accuracy : 2mm Connections : by terminal blocks for max. mm2 wire Printed circuit : the printed circuit board with current loop detection output is board protection encapsulated Hysteresis : < 4 mm Operating temperature : - 25 to + 70 C (Housing) - 40 to + 90 C (Probe) Intrinsic safety data : II 1G D Ex ia IIC or IIB T6, T5, T4 Ga Ex ia IIIC T80 C ou T95 C ou T130 C Da IP6x (see also ) LCIE 02 ATEX 6181X IECEx LCI Doc No: NT401E Revision 09 ENG Electronic Level Switch LIDEC 91-92 installation , Operating & Maintenance Manual 6 5.)

6 installation Various types of fixation are available (Flange or Thread): For thread fixation, tightness must be carried out with the appropriate product For flange fixation, tightness depends on the gasket fitted between the flange and the counter flange. installation WITH FLEXIBLE CONDUIT CAUTION: When work is being carried out inside the tank or close to the probe, it is necessary to protect the probe against shocks, sand blasting, painting Doc No: NT401E Revision 09 ENG Electronic Level Switch LIDEC 91-92 installation , Operating & Maintenance Manual 7 6. OUTPUT RELAY SETTING Positions of the jumps ST1, determine the output configuration.

7 Setting is as follows : ST4 Jumper on standard version No jumper on L20-70D version ST4 Jumper on standard version No jumper on L20-70D version BLACK PINK FROM PROBE PINK BLAC FROM PROBE Doc No: NT401E Revision 09 ENG Electronic Level Switch LIDEC 91-92 installation , Operating & Maintenance Manual 8 7. ELECTRICAL CONNECTIONS Safety instruction : Ensure the power supply line is turned off. Power supply 16 to 28 V DC Cable specification *Screened cable with two cores, (four cores with relay option) suitable for the surrounding. Wire gauge to be to mm , except for relay option, depending of the power switched. *Cable maximum outside diameter to be selected according to the type of cable gland: - In standard : BV2 diameter to mm - In option : BV1 diameter 6 to 12 mm Special precautions for the intrinsically safe installation Ex ia Ratings on power supply line (terminal B1) : Class U max I max P max L int.

8 C int. Ambient T C Ex ia IIC T6 28V 100mA 0 50nF -25 to +40 C Ex ia IIC T5 28V 100mA 0 50nF -25 to +55 C Ex ia IIC T4 28V 100mA 0 50nF -25 to +70 C Ex ia IIC T5 28V 120mA 0 50nF -25 to +40 C Ex ia IIC T4 28V 120mA 0 50nF -25 to +70 C Ex ia IIB T5 28V 200mA 0 50nF -25 to +40 C Ex ia IIB T4 28V 200mA 0 50nF -25 to +70 C Ratings on dry contact line (terminal B3) : U max 28 Vdc; L int. = C int. = 0 The result of such association is an intrinsically safe system, which must be certified. The certification is the responsibility of the provider of the associated device. As consequence, a suitable Zener barrier must be installed in Safe Area, to be inserted in line NOTE: LIDEC transmitter is certified II 1 G D Ex ia IIC or IIB T6, T5, T4 Ga Ex ia IIIC T80 C or T95 C or T130 C Da IP6X under certificate n LCIE 02 ATEX 6181X and IECEX LCI , meaning that it must be associated to an intrinsically safe certified device, complying with the transmitter's intrinsic safety parameters.

9 NOTE: Make sure to respect the intrinsic safety requirements (see chapter ) The screen must be connected to ground on the voltage supply side, and not on the Lidec enclosure. Doc No: NT401E Revision 09 ENG Electronic Level Switch LIDEC 91-92 installation , Operating & Maintenance Manual 9 between LIDEC and power supply / acquisition device on B1, and in line between LIDEC and alarm unit on B3 when used. Wire connection 8. SETTING POINT ADJUSTMENT Potentiometers with red varnish are factory adjustments, not to be modified. The initial setting point is carried out at the factory for detection at 5 mm (in water) above the lowest point of the probe.

10 The sensitivity trimmer allows the light adjustment of the sensitivity of this setting : turning it clockwise decreases the sensitivity. This adjustment is possible till 10mm from the lowest point of the probe, by decreasing the sensitivity, or to comply with the acoustic characteristics of the liquid. CAUTION: Minimum voltage acceptable on the LIDEC 16 Vdc Maximum capacity of the terminal blocks : mm2 BLACK PINK PINK BLACK FROM PROB NF MAGNETIC NO MAGNETIC FROM Doc No: NT401E Revision 09 ENG Electronic Level Switch LIDEC 91-92 installation , Operating & Maintenance Manual 10 9. ROUTINE Maintenance TEST Post commissioning the LIDEC should be checked at routine intervals to ensure it remains within specified characteristics.