Summary of Contents for Igema EWLI-3B
- Page 1 Electronic Remote Water Level Indicator Type EWLI-3B EL65 EL60 for use with level probes: D-05-B-30869-EN-0 Issue date 11/2015...
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Page 2: Table Of Contents
Table of Contents 1. Risks and Safety Precautions ..................................3 1.1 General safety instructions ................................... 3 1.2 Exclusion of liability ....................................4 2. Contents of the packaging ..................................... 5 3 Use in compliance with regulations ................................5 4. System Description ......................................5 4.1 Components ...................................... -
Page 3: Risks And Safety Precautions
Safety instructions 1. Risks and Safety Precautions 1.1 General safety instructions 1. Avoidance of risks to persons and property Only use the device supplied in accordance with the intended planning. Extensions and modifications to the device must only be carried out with our approval. ... -
Page 4: Exclusion Of Liability
Danger means that attention is particularly drawn to technical requirements. Attention 1.2 Exclusion of liability IGEMA GmbH Mess- und Regelsysteme will assume no liability if the above-mentioned regulations, instructions and safety precautions are not noted and followed. -
Page 5: Contents Of The Packaging
(pressure) tanks with electrically conductive liquids. Depending on the regulations applied the EWLI-3B can also be used as a multi-control system (indicator - limiter ‒ controller), by means of the programmable assignment of outputs (change-over contacts) relative to the levels. The EWLI-3B add-on housing is fastened to the process connections provided on the tank. -
Page 6: Function
4.2 Function The EWLI-3B level indicator works on the basis of the conductive fill level method of measurement whereby the electric conductivity of the medium is used. The conductivity of the medium is measured in µS/cm. For the secure functioning of this method of measurement a minimum conductivity of the substance to be measured is required. -
Page 7: Setup
4 mA .. 20 mA output of the DU is calculated like that of the CU. 4.3 Setup For ensuring high availability IGEMA recommends the use of 2 power supply units (redundancy). In terms of hardware the CU is designed for operation with 2 power supply units. -
Page 8: Components Of The Control Unit (Cu)
1 4mA .. 20mA output for loads up to 500Ω, not galv. isolated IGEMA EWLI3 - CU 4.5 Operation Operation of the EWLI-3B is carried out by the 4 buttons of the CU. This is described in Chap. 6 Configuration via Menu . -
Page 9: Error Messages
4.6 Error messages In the LCD display errors from the evaluator and probes are displayed number-coded and in plain text abbreviations. If there is a DU present (optional), errors by evaluator and probes are displayed in the 7-segment display number-coded and 2-digit. For analysis and error correction see Chap. -
Page 10: Display Unit (Du)
4.8 Display unit (DU) There are two versions of the (optional) display unit DU: - systems with up to 16 probes have a single-row LED-display - systems with 17 up to 32 probes have a double-row LED-display For each probe a LED indicates the state of the probe: - green: probe submerged in water - red: probe in steam - surplus LEDs (e.g. -
Page 11: Assembly And Installation
5. Assembly and Installation 5.1 Add-on housing Measuring unit Process connection Probes Casing... -
Page 12: Installation Dimensions And Descriptions
5.1.1 Installation dimensions and descriptions Boiler connection dimensions Display area Minimum water level Distance between probes Lateral dismantling dimensions... -
Page 13: Installation
Ensure protection class in accordance with current regulations With snap fastening for standard DIN EN 50022 35 mm carrier rail Fix device on standard carrier rail by means of the snap fastening (4). 5.2.1 Installation dimensions and descriptions Front view: IGEMA EWLI3 - CU Side view:... -
Page 14: Power Connection
5.2.2 Power connection The device terminal strip is live during operation!! Before working on the device disconnect it from the mains!! If inductive equipment is connected, voltage peaks occur when switching off. For this reason connected inductive equipment (e.g. contactor) must be provided additionally with an RC circuit: e.g. - Page 15 The CAN-Bus control cable has to be a 4-wire, twin stranded, shielded cable (e.g. . UNITRONIC® FD P DeviceNet THICK (PUR) // option: IGEMA Art. no. 35-10058). For the current loop interface (4 mA .. 20 mA) a shielded data cable (2 x 0,34mm 2 x 0,75mm ) (e.g.
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Page 16: Measuring Unit Mu
5.3. Measuring unit MU The measuring unit is fixed to the add-on housing and the probes are fully wired. The connection to the control unit takes place via a 5-pin plug at the bottom of the switching cabinet of the measuring unit. -
Page 17: Display Unit Du (Optional)
5.4 Display unit DU (optional) The (optional) display unit is designed as switchboard mountable device. For fastening, a screw system (switchboard) or a top-hat rail adapter is available (see Accessories). The DU is supplied as standard with 120 Ω bus terminating resistor (contact 3 ‒ contact 4 // CAN L - CAN H) 5.4.1 Installation dimensions and descriptions... -
Page 18: Power Connection
The other side of the bus must be terminated on CAN H and CAN L on the last device via a 120 Ohm resistance. Only IGEMA components belonging to the EWLI-3B system may be operated on this CAN-Bus control cable (1xMU; 1xCU, X x DU). The short-circuit-proof 24V voltage of the CAN-Bus is... -
Page 19: Configuration Via Menu
DUs is possible. However these must then be provided with their own separate and independent 24V supply (observe Chap. 9.2!). 6. Configuration via Menu The menu of the EWLI-3B is divided into two levels: Level 1 ¦ Level 2 The menu is accessed by pressing the key. - Page 20 Diagram: ¦ --- 1. System Info ¦ ¦ - 1.1. Probe state ¦ ¦ ¦ - 1.2. Relay state ¦ ¦ ¦ - 1.3. MU system A ¦ ¦ ¦ - 1.4. MU system B ¦ ¦ --- 2. Supply ¦...
- Page 21 4.1 Backlight: Brightness setting of LCD display 4.2 Password: Password 123 4.3 Relay setup: Programming of the additional outputs 1-7 4.4 LLW Alarm: Programming of the low water level 4.5 HHW Alarm: Programming of the high water level The flashing cursor marks the position where an entry is possible. In some menus this can be moved with the arrow keys ( ▲...
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Page 22: Special Features Of System Setup
All delays for switching operations are set to 00 s. All 7 additional outputs have to been assigned to a probe, even if they are not in use. IGEMA recommends to assign unused probes to the top probe. However there is the possibility to create redundancy. -
Page 23: Commisioning When Starting Up The Boiler
8.3 Commisioning when starting up the boiler - Close drain valve - Fully open the valves to the boiler - Device is heated up together with the boiler 8.4 Commisioning during boiler operation - Fully open drain valve - Slightly open upper valve to boiler, carefully heat up device with steam until operating temperature is reached. - Page 24 Material switch box Stainless steel (1.4404/316L) Protection type Front side IP65 Working temperature: 0°C to + 85°C Humidity non-condensing Voltage supply 18V ‒ 36V; 24V DC / 2W short-circuit-proof via lead Current consumption 50mA @ 24V Electrode voltage 3 Vss Interface CAN-Bus according to DIN ISO 11898, CANopen protocol Self-Test...
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Page 25: Mains Transformer
Working temperature: 0°C to + 55°C 9.2 Mains transformer The mains transformer supplied is an integral part of the EMC tests. IGEMA only guarantees EMC compliance when the power supply unit supplied is used. 9.3 Maximum ratings of potential free contacts... -
Page 26: Data Plate
0°C < T < 85°C In the name of the item EWLI - 3 - 32 or EWLI-3B CU -12 the number of used probes is shown. Item numbers und serial numbers are examples, that are not valid for orders. If you intend to order please contact IGEMA-sales department. -
Page 27: Dismantling And Fitting Probes
10.2 Dismantling and fitting probes Loosen the nut at the probe end and remove the cable lugs Unscrew the probe with wrench (27mm) and screw out carefully Carefully remove probe taking care that the insulation (PTFE or ceramic) is not damaged. ... - Page 28 Error codes: Error code Cause Remedial Action Display CU Display DU Check probe xx ( xx ) please Problem with probe xx check probe: xx (33) Below low water level Provide supply of water LLW alarm (34) High water level reached Switch off water supply HHW alarm (40) PIN 1...
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Page 29: Warranty
MU electronic board: MU A Supply 24V MU B Continuous light of all 3 LEDs: MU working correctly LED MU A off: MU A error LED MU B off: MU B error all 3 LEDs off: no 24V supply 12. Warranty Warranty We grant a 24 month warranty period on our products. -
Page 30: Declaration Of Conformity
13. Declaration of Conformity... - Page 31 This high-quality IGEMA product was designed, manufactured and tested with the application of the QM System guidelines in accordance with DIN EN ISO 9001:2000. If the device supplied shows transport damage or gives cause for complaint in spite of our final quality control please contact our SERVICE department by return.
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Page 32: Attachment
14 Attachment List of accessories: Power supply unit Art.no.: …20-10010 DU (up to 16 Probes) Art.no.: …20-10013 DU (17 - 32 Probes) Art.no.: …20-10012 CU (with gold plated relay contacts) Art.no.: …20-10015 Top-hat rail adapter for DU Art.no.: …40-50055 Switch amplifier for galvanic decoupling of the Art.no.: …20-10016 current output Assembled BUS connecting cable (including assembled plug and plug socket):... - Page 33 System- / Assignment table (in correct operating state): Tighten relay open (no power, state of rest) LLW output Probe ____ submerged Probe ____ emerged HHW output Probe ____ emerged Probe ____ submerged Output 1 Probe ____ submerged / emerged * Probe ____ submerged / emerged * Output 2 Probe ____ submerged / emerged *...
- Page 34 fill level control (via 2 contacts) by way of pump control: Probe 3 emerged: start pump probe 13 submerged: stopp pump via output 5 The pump contactor is connected to the contacts Out5:34 and Out5:36 enter password, then press ▼ or ▲ until 4.3 Relay setup is shown press o.k.