prEN 1804-4

Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 4: Electro-hydraulic control systems

Scope

5
This standard specifies the safety requirements for electro-hydraulic control devices for support units,
including their emergency stop, pre-start warning, monitoring and control devices, when used as specified by
the manufacturer or his authorized representative.
The requirements of EN 1804 Part 3 also apply to the hydraulic components of the electro-hydraulic control
systems
This standard applies to electro-hydraulic control systems used at ambient temperatures from �10 °C to
40 °C and operating temperatures from �10 °C to 60 °C.
This standard identifies and takes into account:
.possible hazards which can be caused by the operation of hydraulic control devices;
.areas and operating conditions which can create such hazards;
.hazardous situations which can cause injury or may be damaging to health;
.hazards which can be caused by firedamp and/or flammable dust.
This standard describes methods for the reduction of these hazards.
A list of hazards covered appears in Clause 4.
This standard is applicable to all electro-hydraulic control devices placed on the market for the first time
which are manufactured after the date on which this standard was issued..prEN 1804-4:2004 (E)
This European Standard does not specify any additional requirements for:
.cable less remote control systems;
.specially corrosive environments;
.hazards occurring during construction, transportation, decommissioning;
.earthquakes.

Related legislation

Legislation related to this standard