EUCHNER MGB-LxxB-PNA-xxx (PROFINET) with Data Structure Type A - Manual (Page 21)

Operating Instructions Safety System MGB-L..B-PNA-... (PROFINET)
21
Protection against environmental effects
Lasting and correct safety function requires that the system must be protected
against foreign bodies such as swarf, sand, blasting shot, etc., which can become
lodged in the locking and handle modules. For this purpose a suitable installation
position should be selected.
Cover device during painting work!
Electrical connection
Warning!
Mounting must be performed only by authorized personnel.
Caution!
Risk of damage to equipment or malfunctions as a result of incorrect connection.
Ì All the electrical connections must either be isolated from the mains supply
by a safety transformer according EN IEC 61558-2-6 with limited output volt-
age in the event of a fault, or by other equivalent isolation measures.
Ì For use and operation as per the requirements, a power supply with the
feature "for use in class 2 circuits" must be used. The same requirement ap-
plies to the safety outputs.
Alternative solutions must comply with the following requirements:
a) Electrically isolated power supply unit with a max. open-circuit voltage of 30
V/DC and a limited current of max. 8 A.
b) Electrically isolated power supply unit in combination with fuse as per UL248.
This fuse should be designed for max. 3.3 A and should be integrated into
the 30 V/DC voltage section.
Attention:
Ì The supply for further subscribers on the bus may be forwarded via the Eu-
chner MGB system. The entire supply current through the MGB must not be
higher than specified in the section Technical data.
Ì The function earth must be connected. An M6 threaded bore is available
on the mounting plate for this purpose.
Important!
Ì If the device does not appear to function when operating voltage is applied
(e.g. UB LED does not illuminate), the safety switch must be returned un-
opened to the manufacturer.
Ì To ensure the stated degree of protection IP67 is achieved, the cover
screws must be tightened to a tightening torque of 1 Nm.
Ì Tighten screw for the cover for the mechanical release to 0.5 Nm.