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.

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 information/installation requirements for PS9031-4820-0001 Buffer 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 modify or attempt to repair the device.

• Do not open the device, as high voltages are present inside.

• 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.

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. Mount the device on a DIN rail according to EN 60715 with the power terminals on the top side of the device. 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. 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 device can be supplied from a regulated power supply or a similar DC voltage source. The continuous voltage between the supply voltage terminals and the PE potential may not exceed 60 Vdc. Use a correspondingly dimensioned 48 V power supply unit that can supply the additional internal current consumption required to charge the capacitors. Pay attention to the correct polarity of the supply voltage. The device does not work if the voltage polarity is reversed. The device must be supplied from a PELV or SELV source or an "isolated secondary circuit" in order to guarantee a SELV or PELV level. If the buffer module is connected to a DC source that can supply a continuous current of more than 45 A, a 25 A or 32 A circuit breaker with a B or C characteristic must be connected between the DC source and the buffer module. The device is designed for convection cooling and does not require an external fan. Do not obstruct the air flow or cover the ventilation grille! Observe the following minimum installation distances: 40 mm above, 20 mm below, 0 mm left and right. The device is designed for altitudes of up to 5000 m. 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 %. For EMC reasons the signal cables (ready, active, inactive) must be shorter than 30 m.