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.

Notice

Damage to environment/equipment or data loss

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

Safety instructions 1:

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 PS9771-2440-0000 power supply unit

DANGER

Danger of electric shock, fire, injuries, injuries resulting in death!

  • Turn power off before working on the device. Protect against inadvertent re-powering.
  • Do not modify or repair the device.
  • Do not open the device, as high voltages are present inside.
  • Use caution to prevent any foreign objects from entering the housing.
  • Do not use in wet locations or in areas where moisture or condensation can be expected.
  • Do not touch during power-on, and immediately after power-off. Hot surface may cause burns.
Safety instructions 2:

Further notes on installation requirements

  • This device may only be installed and put into operation by qualified personnel.
  • This device does not contain serviceable parts. The tripping of an internal fuse is caused by an internal defect.
  • If damage or malfunction should occur during installation or operation, immediately turn power off and send unit to the factory for inspection
  • Install device in an enclosure providing protection against electrical, mechanical and fire hazards.
  • Install the device onto a DIN-rail according to EN 60715 with the input terminals on the bottom of the device.
  • Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that are designed for a minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient temperatures up to +60°C and 90°C for ambient temperatures up to +70°C. Ensure that all strands of a stranded wire enter the terminal connection. Unused screw terminals should be securely tightened.
  • The device is designed for pollution degree 2 areas in controlled environments. No condensation or frost is allowed.
  • The enclosure of the device provides a degree of protection of IP20. The enclosure does not provide protection against spilled liquids.
  • The isolation of the devices is designed to withstand impulse voltages up to 4kV according to IEC 60664-1.
  • The device is designed as “Class of Protection I” equipment according to IEC 61140. Do not use without a proper PE (Protective Earth) connection.
  • The device is designed to be supplied from a DC (input) voltage derived from a 3-phase TN, TT, IT or Corner grounded delta mains supply systems by means of a B6 bridge rectifier.
  • The input can also be supplied by batteries or similar DC sources. Since the continuous voltage between the input voltage and the PE/earth potential must not exceed 480V r.m.s., the input voltage must be grounded at about half the supply voltage as shown in option 2 in “Wiring Scheme”.
  • Do not ground the positive or negative input voltage pole. Follow the wiring scheme shown in this document.
  • The continuous voltage between the supply voltage and PE/ground must not exceed 480V r.m.s.. Check for correct input polarity. The device will not operate when the voltage is reversed.
  • A disconnecting means shall be provided for the input of the device.
  • The device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not cover ventilation grid!
  • The device is designed for altitudes up to 2000m.
  • Keep the following minimum installation clearances: 40mm on top, 20mm on the bottom, 5mm left and right side. Increase the 5mm to 15mm in case the adjacent device is a heat source. When the device is permanently loaded with less than 50%, the 5mm can be reduced to zero.
  • For external branch protection consider diagram “Wiring Scheme”. There are two options:
  • Option 1: For using the device powered by a B6 rectification the unit is tested and approved for branch circuits up to 25A. Do not use fuses smaller than 4A to avoid a nuisance tripping of the circuit breaker.
  • Option 2: For all other DC sources, the device is tested and approved with max. 10A fuses in the plus and minus path. It is possible to use two devices on 10A fuses or one single device on 6A fuses. Do not use fuses smaller than 6A to avoid a nuisance tripping of the fuse. Use following fuse types with Option 2: Littelfuse type 0SPF010 or equivalent UL listed fuse, SIBA type URZ 5020434.
  • The maximum surrounding air temperature is +70°C. The operational temperature is the same as the ambient or surrounding air temperature and is defined 2cm below the device.
  • The device is designed to operate in areas between 5% and 95% relative humidity.