Connection Diagrams - Leuze electronic MSI-SR-ES20-01 Original Operating Instructions

• The entire system/machine must undergo validation in
accordance with the applicable standards on the basis of
this.
• The specified performance level will only be achieved if,
taking into account the prevailing device load (see
EN ISO 13849-1, Table C.1) and the application case, an
average number of switching cycles per year is not
exceeded (see EN ISO 13849-1, C.4.2 and Table K.1).
Assuming that the B10d value for the maximum load is
400,000, this results in a maximum cycle number of
400,000 / 0.1 × 30 = 133,333 switching cycles/year.
• The safety-related characteristics only apply if the relays
are switched at least once per year.
• Operating the device other than specified may result in
malfunctions or destruction of the device.
• The device must be checked to ensure it is in perfect
working order before commissioning, after replacement of
modules and/or in the case of changes to an installation
that has already undergone acceptance.
• The expansion units of the MSI-SR-CM series or external
contactors with positively-driven contacts can be used to
duplicate the enabling current paths.
• The device and contacts must be fused with a maximum
6 A operating class gG.
5

Connection diagrams

MSI-SR-ES20-xx AC/DC 24 V
2 EMERGENCY STOP, two-channel
2.1 RESET
PL d / category 3, SILCL 2
Leuze electronic GmbH + Co. KG
info@leuze.de • www.leuze.com
• Automatic restart (in accordance with
EN 60204-1, Section 9.2.5.4.2 and 10.8.3) must be
prevented using the higher-level control.
• The safety functions have not been checked by UL. The
certification process has been carried out in accordance
with the requirements for general applications as
stipulated by UL508.
3 Behaviour in the event of a malfunction
• Locking: If the device becomes locked (e.g. due to a brief
power failure), it can be unlocked by opening and closing
the safety equipment.
• Short circuits: If short circuits occur on the control lines,
the electronic fuse is tripped. The device will be ready for
operation again once the short circuit has been rectified
and the fuse has had a brief recovery period.
• Contact malfunctions: Activation is not possible if the
contacts are welded.
4 Disposal
Unusable or irreparable devices must always be disposed
of in accordance with the relevant country-specific disposal
regulations that apply (e.g. European waste code
16 02 04).
1 EMERGENCY STOP, single-channel
1.1 RESET
3 2 enabling current paths (normally open contacts)
4 Supply voltage
In der Braike 1 D-73277 Owen
Tel. +49 (0) 7021 573-0
PL c / category 1, SILCL 1
We reserve the right to make changes
01/2018 - 50134633-01 - 6/22