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Summary of Contents for KROHNE SU 502
- Page 1 SU 502 Handbook...
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Page 2: Table Of Contents
Disposal ......................... 21 9 Certificates and approvals ....................22 Approvals for Ex areas ....................22 EU conformity ......................... 22 SIL conformity (optional) ....................22 10 Supplement ..........................23 10.1 Technical data ........................ 23 10.2 Dimensions ........................25 10.3 Trademark ........................26 SU 502 •... - Page 3 Contents Supplementary documentation Information: Supplementary documents appropriate to the ordered version come with the delivery. You can find them listed in chapter " Product descrip- tion". Editing status: 2022-04-06 SU 502 •...
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Page 4: About This Document
This symbol indicates special instructions for Ex applications. • List The dot set in front indicates a list with no implied sequence. Sequence of actions Numbers set in front indicate successive steps in a procedure. Disposal This symbol indicates special instructions for disposal. SU 502 •... -
Page 5: For Your Safety
During work on and with the device, the required personal protective equipment must always be worn. Appropriate use SU 502 is a universal controller for connection of level switches. You can find detailed information about the area of application in chapter " Product description". Operational reliability is ensured only if the instrument is properly used according to the specifications in the operating instructions manual as well as possible supplementary instructions. -
Page 6: Safety Instructions For Ex Areas
Canadian Electrical Code. Safety instructions for Ex areas For applications in explosion-proof areas (Ex), only devices with cor- responding Ex approval may be used. Observe the Ex-specific safety instructions. These are an integral part of the operating instructions and are enclosed with every device with Ex approval. SU 502 •... -
Page 7: Product Description
• Manufacturer information Principle of operation The SU 502 is a single channel controller for level detection of limit Application area switches with 8/16 mA interface. Via the integrated relay simple con- trol tasks can be solved. Typical applications are monitoring functions such as overfill or dry run protection, Optionally an additional second relay can be ordered. - Page 8 • Protected against solar radiation • Avoiding mechanical shock and vibration • Storage and transport Storage and transport temperature see chapter " Supplement - temperature Technical data - Ambient conditions" • Relative humidity 20 … 85 % SU 502 •...
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Page 9: Mounting
General instructions Mounting options SU 502 is designed for carrier rail mounting (top hat rail 35 x 7.5 ac- cording to DIN EN 50022/60715). Due to its protection rating of IP20, the instrument is suitable for mounting in switching cabinets. It can be mounted horizontally and vertically. -
Page 10: Connecting To Power Supply
Voltage supply The data for power supply are specified in chapter " Technical data". Connection cable The voltage supply of SU 502 is connected with standard cable ac- cording to the national installation standards. The sensors are connected with standard two-wire cable without shielding. If electromagnetic interference is expected which is above the test values of EN 61326 for industrial areas, shielded cable should be used. -
Page 11: Connection Procedure
5. Option with fail safe relay: Connect relay to terminal 13/14/15 The electrical connection is finished. Wiring plan OPEN 10 11 12 13 14 15 16 17 Sensor circuit (8/16 mA) Relay output Fail safe relay/second relay output (optional) Voltage supply SU 502 •... - Page 12 5 Connecting to power supply Information: The connection terminals can be detached towards the front, if neces- sary. This can be useful when working in tight spaces or for exchange of an instrument. SU 502 •...
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Page 13: Setup
– Operating control lamp – Mains voltage on, instrument is operating • – Fault indicator – Fault on the sensor circuit due to sensor failure or line break – The relay deenergises in case of failure • Yellow SU 502 •... - Page 14 DIL switch block The DIL switch block is located behind the front cover. The individual switches are assigned as follows: Fig. 2: DIL switch SU 502 Mode (min./max. adjustment) 2 Switch-on pulse monitoring On/Off Switch-on delay 2 seconds Switch-on delay 6 seconds...
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Page 15: Automatic Function Test
Keep in mind that the switching delay of the sensor and controller accumulate. Function relay 2 (op- A second relay can be ordered as an option for SU 502. The function tional) of the second relay is determined via this DIL switch. It can be con- figured as fail safe relay or as second level relay. When configured as... - Page 16 1 s. The switching-on impulse delivered by the sensor is controlled by SU 502. After a time of 6 s after switching on the sensor again, the result of the test will be available on the fail safe output and can be further processed by the PLC.
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Page 17: Function Table "Point Level
Interruption of the sensor current for at least 1 s Time until event is available (at least 6 s) Function table "Point level" The following table provides an overview of the switching conditions depending on the set mode and the level. SU 502 •... - Page 18 > 21 mA Dry run protection, point level Sensor Controller Level Sensor LED yel- LED red Relay Fail safe current (fault) relay (op- (output) tional) approx. 16 mA approx. 8 mA < 3.6 mA > 21 mA SU 502 •...
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Page 19: Diagnostics And Servicing
Fault signal The controller and the connected sensors are permanently monitored during operation. If irregularities occur, a fault signal is triggered. In the event of a failure, the fault indication lights up and the relays are de-energized (safe state). SU 502 •... -
Page 20: How To Proceed If A Repair Is Necessary
If there is no longer a fault signal on the line, the sensor is defective -> exchange sensor or return it for repair How to proceed if a repair is necessary If it is necessary to repair the instrument, please contact the responsi- ble Krohne agency. SU 502 •... -
Page 21: Dismount
If personal data is stored on the old device to be disposed of, delete it before disposal. If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. SU 502 •... -
Page 22: Certificates And Approvals
Approvals for Ex areas Approved versions for use in hazardous areas are available or in preparation for the device or the device series. You can find the relevant documents on our homepage. EU conformity The device fulfils the legal requirements of the applicable EU direc- tives. By affixing the CE marking, we confirm the conformity of the instrument with these directives. The EU conformity declaration can be found on our homepage. SIL conformity (optional) Instruments with SIL option fulfill the requirements of functional safety according to IEC 61508. You can find further information in the sup- plied Safety Manual. SU 502 •... -
Page 23: Supplement
24 … 65 V (-15 %, +10 %) Max. power consumption 3 W (8 VA) Sensor input Quantity 1 x analogue Input type Active (sensor power supply by SU 502) Measured value transmission Analogue 8/16 mA Switching threshold Ʋ On 12.1 mA Ʋ Off 11.9 mA... - Page 24 Ʋ Reference voltage 253 V If inductive loads or stronger currents are switched through, the gold plating on the relay contact surface will be permanently damaged. The contact is then no longer suitable for switching low-level signal circuits. SU 502 •...
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Page 25: Dimensions
10 Supplement Ʋ Insulation resistance 5.1 kV 10.2 Dimensions 20 mm 113 mm (0.79") (4.45") OPEN Fig. 6: Dimensions SU 502 SU 502 •... -
Page 26: Trademark
10 Supplement 10.3 Trademark All the brands as well as trade and company names used are property of their lawful proprietor/ originator. SU 502 •... - Page 27 – Fault signal 19 Fault rectification 19 Grounding 10 LEDs 13 Mode 14 Overflow protection 14 Potential equalisation 10 Protection rating 9 Serial number 7 SIL 22 Switch-off delay 15 Switch-on delay 15 Switch-on pulse checking 14 Test key 15 Type label 7 SU 502 •...
- Page 28 • training services Head Office KROHNE Messtechnick GmbH Ludwig-Krohne-Straße 5 47058 Duisburg (Germany) Tel.: +49 (0) 203 301 0 Tel.: +49 (0) 203 301 10389 info@krohne.de The current list of all KROHNE contacts and addresses can be found at: www.krohne.com...
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