Safety instructions

Description of instructions

In this documentation the following instructions are used.
These instructions must be read carefully and followed without fail!

DANGER
Serious risk of injury!

Failure to follow this safety instruction directly endangers the life and health of persons.

WARNING
Risk of injury!

Failure to follow this safety instruction endangers the life and health of persons.

CAUTION
Personal injuries!

Failure to follow this safety instruction can lead to injuries to persons.

Note
Damage to environment/equipment or data loss

Failure to follow this instruction can lead to environmental damage, equipment damage or data loss.

Tip or pointer

This symbol indicates information that contributes to better understanding.

Intended use

This device is designed for installation in a housing and is intended for general professional use, for example in industrial control systems or office, communication and measuring equipment.

Do not use this power supply in installations where a malfunction could cause serious injury or danger to human life.

Exclusion of liability

All the components are supplied in particular hardware and software configurations appropriate for the application. Modifications to hardware or software configurations other than those described in the documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG.

Personnel qualification

This description is only intended for trained specialists in control, automation and drive engineering who are familiar with the applicable national standards.

Safety regulations

Please note the following safety instructions and explanations!
Product-specific safety instructions can be found on following pages or in the areas mounting, wiring, commissioning etc.

Safety instructions and installation requirements for the PS9401-2420-0000 Redundancy Module

DANGER
Danger of electric shock, fire, injuries, injuries resulting in death!
  • Switch off the power supply before working on the device. Provide protection against unintentional reconnection.
  • Do not open, modify or repair the device.
  • Avoid foreign bodies entering the housing.
  • Do not use the device in damp locations or in areas where moisture or condensation is likely to occur.
  • Do not touch the device when it is switched on or immediately after it has been switched off. Hot surfaces can cause burns.
WARNING
Explosion hazard warning!

Replacement of components may affect the suitability for this environment.
Disconnect the device only when the power supply has been switched off or if the area is known not to be dangerous.
A suitable housing must be provided for the end product that has at least protection class IP54 and meets the requirements of EN 60079-0.

Note
Instructions for use in potentially explosive atmospheres

The device is suitable for use in environments of Class I Division 2 Groups A, B, C, D and in Group II Category 3 (Zone 2).

Classification: ATEX: EPS 11 ATEX 1 312 X, II 3G EX eC IIC T4 Gc / IECEx EPS 21.0018X.

Further notes on installation requirements

  • This device contains no parts that require maintenance. If an internal fuse trips, this is due to an internal defect.
  • If any damage or malfunction occurs during installation or operation, turn off the power supply immediately and return the device to the factory for inspection.
  • Install the device in a housing that provides protection against electrical, mechanical and fire hazards.
  • Do not ground the positive output pole, as this could prevent the redundancy in case of earth leakage. Ground the negative output pole if necessary.
  • Install the device on a DIN rail according to EN 60715, with the input terminals at the bottom of the device. Other installation positions require a reduction of the output current.
  • Make sure that the wiring is correct by complying with all local and national regulations. Use suitable copper cables designed for a minimum operating temperature of 60 °C at ambient temperatures up to +45 °C, 75 °C at ambient temperatures up to +60 °C and 90 °C at ambient temperatures up to +70 °C. Make sure that all individual wires of a strand are inside the terminal connection. Unused screw terminals should be tightened firmly.
  • The device is designed for areas with a degree of pollution 2 in controlled environments. No condensation or frost is allowed.
  • The device housing offers IP20 protection. The housing offers no protection against spilled liquids.
  • The insulation of the devices is designed such that it can withstand pulse voltages up to 1.5 kV in accordance with IEC 60664-1.
  • The input must be supplied from a PELV or SELV source or an "isolated secondary circuit" in order to obtain a PELV or SELV output.
  • Check the correct input polarity. The device will not work if the input voltage is reversed.
  • The device is designed as equipment of "Protection Class III" according to IEC 61140.
  • A PE connection (ground) is not required. However, it may be advantageous to connect the ground terminal of the housing to ground in order to achieve high EMI immunity.
  • The device is designed for convection cooling and does not require an external fan. Do not obstruct the air flow or cover the ventilation grilles!
  • The device is designed for altitudes of up to 5000 m (16,400 ft). The output current must be reduced above 2000 m (6560 ft).
  • Keep to the following minimum mounting distances: 40 mm at the top, 20 mm at the bottom, 5 mm on the left and right. Increase the 5 mm to 15 mm if the neighboring device is a source of heat. If the device continuously runs at less than 50%, the 5 mm distance can be reduced to zero. It is possible under certain circumstances to reduce the distances. See details in the product data sheet.
  • The maximum temperature of the ambient air is +70 °C (+158 °F). The operating temperature corresponds to the ambient air temperature and is defined 2 cm below the device.
  • The device is designed for operation in the relative humidity range between 5 % and 95 %.