KROHNE SU 501 Ex Handbook
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KROHNE SU 501 Ex Handbook

Switch amplifier controller
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SU 501 Ex
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Switch Amplifier
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Summary of Contents for KROHNE SU 501 Ex

  • Page 1 SU 501 Ex Handbook Switch Amplifier Controller...

  • Page 2: Table Of Contents

    Rectify faults ........................19 How to proceed if a repair is necessary ................21 Dismount..........................22 Dismounting steps......................22 Disposal ......................... 22 Supplement ..........................23 Technical data ........................ 23 Dimensions ........................25 Trademark ........................26 Editing status: 2019-11-08 SU 501 Ex • Controller...

  • Page 3: About This Document

    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. Battery disposal This symbol indicates special information about the disposal of bat- teries and accumulators. SU 501 Ex • Controller...

  • Page 4: For Your Safety

    During work on and with the device, the required personal protective equipment must always be worn. Appropriate use SU 501 Ex 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 5: Ce Conformity

    Canadian Electrical Code. Safety instructions for Ex areas For Ex applications, only devices with corresponding 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 501 Ex • Controller...

  • Page 6: Product Description

    • Article number • Serial number • Technical data • Article numbers, documentation Principle of operation Application area SU 501 Ex is a single controller for processing of vibrating level switches. SU 501 Ex • Controller...

  • Page 7: Adjustment

    When the medium reaches the switching point of the sensor, the sen- sor current changes. This is measured and evaluated by SU 501 Ex. The change causes the output relays to switch according to the set operating mode.

  • Page 8: Mounting

    SU 501 Ex controller with plug-in socket for mounting on carrier rail according to EN 50022. Transparent cover The front plate of SU 501 Ex can be provided with a lead-sealable transparent cover to protect the instrument against unauthorised or inadvertent adjustment. See the following figure on how to remove the transparent cover.
  • Page 9 The plug-in socket is provided with coded pins that can be inserted to prevent accidental interchanging of the various instrument types. With a SU 501 Ex in Ex version, the supplied coded pins (type coded pin and Ex coded pin) must be inserted by the user according to the below table.
  • Page 10 EEx ia Plug-in socket Typ 600-1 0...10V DISBUS Fig. 4: Plug-in socket SU 501 Ex Bridges for looping the operating voltage Type coding for SU 501 Ex Ex coding with Ex version Ex separating chamber SU 501 Ex • Controller...

  • Page 11: Connecting To Power Supply

    (low impedance). If potential equalisation currents are expected, the screen connec- tion on SU 501 Ex must be made via a ceramic capacitor (e. g. 1 nF, 1500 V). The low frequency potential equalisation currents are thus suppressed, but the protective effect against high frequency interfer- ence signals remains.

  • Page 12: Wiring Plan

    (above the sensor terminals). The pins for type and Ex coding must also be inserted correctly. Wiring plan 12 13 14 L1 N Fig. 5: Wiring plan SU 501 Ex Sensor Sensor input Transistor output Relay output Voltage supply...

  • Page 13: Setup

    Control lamp - level relay (LED yellow) Control lamp - Fault signal (LED red) Control lamp - Operating voltage (LED green) Ex separating chamber Terminal for probe Sockets for bridges Transistor output Relay output 10 Voltage supply SU 501 Ex • Controller...

  • Page 14: Adjustment Elements

    – 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 501 Ex • Controller...
  • Page 15 Keep in mind that the switching delay of the sensor and controller accumulate. Switch Time 12 s 0.2 s 0.5 s Set alternately switch 2 and/or 3 to "on". The times apply to the adjusted delay mode. SU 501 Ex • Controller...
  • Page 16 This allows you to check the correct function of the measuring system. Test procedure After releasing the key. A-mode B-mode 1 Simulation of a fault signal (approx. 3 s) Relay control lamp off Relay control lamp off Level relay deenergised SU 501 Ex • Controller...

  • Page 17: Function Table

    Control lamp - Outputs controller Sensor - Switching out- Failure (red) put (yellow) Mode A approx. 8 mA Relay energized Overflow pro- transistor con- tection ducts Mode A approx. 16 mA Relay deener- gized Overflow pro- tection transistor blocks SU 501 Ex • Controller...
  • Page 18 16 mA Relay energized Dry run protec- transistor con- tion ducts Mode B approx. 8 mA Relay deener- gized Dry run protec- tion transistor blocks Fault message approx. 1.8 mA Relay deener- gized (mode A/B) transistor blocks SU 501 Ex • Controller...

  • Page 19: Maintenance And Fault Rectification

    Sensor not connected cor- In Ex systems, make sure that the Ex protection is not rectly influenced by the measuring instruments used. Measure the voltage on the connection cable The terminal voltage of the sensor is at least 12 V in normal condition SU 501 Ex • Controller...
  • Page 20 If the cable is highly resistive, bring it to a normal resist- do not occur in the correct ance, e.g. check terminals and cable connections on sequence or correct dura- corrosion tion, e.g. no full signal is output. SU 501 Ex • Controller...

  • Page 21: How To Proceed If A Repair Is Necessary

    "Set up" may have to be carried out again. How to proceed if a repair is necessary If it is necessary to repair the instrument, please contact the responsi- ble Krohne agency. SU 501 Ex • Controller...

  • Page 22: Dismount

    Pass the instrument directly on to a specialised recycling company and do not use the municipal collecting points. If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. SU 501 Ex • Controller...

  • Page 23: Supplement

    Contact 1 x spdt Contact material AgNi 0.15 hard gold-plated Switching voltage ≥ 10 mV DC, ≤ 253 V AC/DC Switching current ≥ 10 µA DC, ≤ 3 A AC, 1 A DC Breaking capacity ≤ 500 VA, ≤ 54 W DC Transistor output Number, function 1 output, synchronously switching with the relay SU 501 Ex • Controller...
  • Page 24 Depending on the version, instruments with approvals can have different technical data. For these instruments, please note the corresponding approval documents. They are included in the scope of delivery. If several instruments are arranged together in series, the max. ambient temperature is reduced to +50 °C (+122 °F) SU 501 Ex • Controller...

  • Page 25: Dimensions

    9 Supplement Dimensions 12 13 14 134 mm (5.28") 36 mm (1.42") Fig. 9: Dimensions SU 501 Ex Transparent cover Carrier rail 35 x 7.5 or 35 x 15 according to EN 50022 Ex separating chamber SU 501 Ex • Controller...

  • Page 26: Trademark

    9 Supplement Trademark All the brands as well as trade and company names used are property of their lawful proprietor/ originator. SU 501 Ex • Controller...
  • Page 27 Notes SU 501 Ex • Controller...
  • Page 28 Products and systems for the oil and gas industry • KROHNE Messtechnick GmbH & Co. KG Ludwig-Krohne-Straße 5 D-47058 Duisburg 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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