ELM3002-0xx5 – Safety and operating instructions

Risk of injury due to electric shock/arcing/burning

The following instructions (Part I) must be observed:

• The operator must ensure that this product is only installed and operated in perfect working order and by sufficiently qualified and authorized personnel.
• Intended use: industrial, stationary indoor use:
  The analog input devices extend the field of application of the Beckhoff Bus Terminal system with functions for measuring sensor signals via voltage, current or resistance. The intended field of application is data acquisition and control tasks in industrial automation. Use of the terminal beyond its intended use is not permitted.
• The decision to use and release for operation must be made by an electrotechnical specialist in accordance with the applicable safety rules (occupational health and safety) for the application. National regulations may have to be observed.
• Ensure proper wiring by following all local and national regulations.
• The cables and plugs used must be in the required measuring category or be approved for the applied voltages. Note: when laying such cables, it may be necessary to comply with installation specifications, such as those specified in EN 60204.
• Live measuring cables must be equipped with a maximum fuse protection of 1 A close to the source to prevent high energy input into the cable section or the measuring device in the event of a fault.
• The installation must be thoroughly checked for incorrect wiring before commissioning; appropriate cable labeling/marking is recommended.
• To protect against direct contact, the terminal must be installed in a control cabinet that complies with protection class IP54 or higher in accordance with EN 60529. The control cabinet must be connected to the system protective earth (PE).
• Voltages > 60 V DC / 48 V AC should not be supplied when the control cabinet is open. Supplying these voltages is only permitted in individual cases, when safety precautions have been taken by appropriately qualified personnel.
• If the application contains unearthed potential differences and an earth fault can pose a hazard, an insulation monitor must be provided and evaluated.
• Check the terminal before, during and after installation and periodically during breaks in operation for visible damage, such as damaged/cracked sockets/cables/plugs and loose parts. If damage is present, commissioning or further operation is prohibited.
• Ensure that the device and the wiring are de-energized on the field and bus side during installation/assembly/testing/disassembly. The 5 safety rules of electrical engineering must be observed:
  - De-energize
  - Secure against reconnection
  - Ensure that no voltage is present
  - Ground and short-circuit
  - Cover or isolate adjacent live parts
• Avoid foreign bodies entering the housing.
• Do not modify or attempt to repair the device.
• Do not open the terminal or interfere with the interior of the terminal.

Risk of injury due to electric shock/arcing/burning

The following instructions (Part II) must be observed:

• Do not use the terminals in a damp or explosive environment. Check the installation regularly for contamination.
• The terminal may only be used in areas with a maximum pollution degree of 2 (non‑conductive pollution) in accordance with IEC 60664-1.
• Do not use the device in damp locations or in areas where moisture or condensation is likely to occur.
• The ambient conditions regarding temperature, humidity, heat dissipation, EMC and vibrations, as specified in the operating instructions under technical data, must be observed.
• After final decommissioning or in the event of damage, the terminal must be clearly marked and, if necessary, disposed of in such a way as to prevent hazards from careless use.
• The metal terminal parts of the ELMxxxx housing must be connected to the system protectional earth (PE) (housing screw M4x8 supplied and ring cable lug so that at least 2 mm load-bearing thread length in the ELM housing is engaged). A torque of 1 - 1.2 Nm must be applied. Longer screws are not permitted.
• Check whether the unlocked 4 mm plugs on the connection side could come loose due to external influences that are typical for the application! If, in general, the unlocked 4 mm plugs could come loose and cause a hazard, specifically due to vibration and/or if they are installed in the 3-B: Mounting rail on top, connection side faces downwards position, the ZS9100-0003 shielding hood (accessory) must be installed or the plugs must be secured by other means.
• When operating in a warm environment, the terminal housing can become hot; the highly thermally conductive metal surface increases the temperature sensation when touched. Prolonged contact with the surface should then be avoided.

Risk of injury from sharp edges and falling parts

Care must be taken when handling the product

• The product may have sharp edges/corners.
• Depending on the weight of the product, it could cause injury or damage if it falls.

Notes on operation General

The following instructions must be observed

• The installation of an external transient protection of max. 6 kV is recommended to keep short-term overvoltages away from the measuring instrument. Its functionality must be monitored.
• The terminal mounted on the DIN rail must be covered on the right by either a subsequent terminal or the EL9011 bus end cap.
• SELV/PELV circuits (Safety Extra Low Voltage) in accordance with IEC 61010-2-201 must be used to supply this device (see note on power supply).

Notes on operation ELMxxxx

The following instructions must be observed

• The terminal requires a head station (embedded PC, coupler) that generates the E-bus voltage for operation. To ensure that the insulation resistance is not exceeded, the potential of the E-bus to the housing potential must be defined. The terminal therefore has an internal or high-resistance connection between the housing and the E-bus. For this reason, the following applies to the selection of the terminal head station
  - EKM1101/ELM9410: possible, since the E-bus supply is electrically isolated
  - EK11xx/EK15xx/CXxxx: these devices generate the E-bus supply without electrical isolation to Us/Up if required. The Us/Up fed in for the supply must either be electrically isolated or grounded (⏚), there may be no connection to any other potential.
  - Note: In order to meet this specification in a testable manner, it may be useful to operate the terminal(s) on a separate head station.