EUCHNER AS-i Safety Output Relay with four standard inputs - Manual (Page 18)

18 Subject to reasonable modifications due to technical advances Id.-No.: 103573 Issue date - 28.5.2009 EUCHNER GmbH + Co. KG
Kohlhammerstraße 16 • D-70771 Leinfelden-Echterdingen Tel. +49/711/75 97-0 • Fax. +49/711/753316
AS-i Safety Output Relay with four standard inputs
Safety Requirements
7. Safety Requirements
• The device uses two redundant, force-guided relays.
• The module recognizes if one of the relays does not switch (for instance if the
contacts are welded).
• The contact sets 1.13/1.23 and 1.14/1.24 use the same relay; they do not
operate independently.
• The contacts 1.13, 1.23, 1.14, 1.24 are potential-free. A cross-short check is
not available.
• If the device is set up to control two independent safety contactors, con-
nected in series, the connection between the safety contactors and the
device must never be subjected to another potential as this could result in the
inadvertent activation of the safety contactors.
• Input 1.Y1, just like inputs I1... I3, is a standard AS-i input.