MODULAR SAFETY INTEGRATED CONTROLLER MOSAIC
112 8540780 • 10/07/2020 • Rev.38
RELAY
The Output RELAY Consists in a N.O. (Normally Open) contact relay. Relay contacts are
closed when the input IN is equal to 1 (TRUE), otherwise they are open (FALSE).
Parameters
Category There is a choice of 3 different
relay output categories:
Category 1. Outputs with single Category 1
relay. Each MOR4/S8 unit may have up to 4 of
these outputs.
Features:
• Internal relays are monitored.
• EDM feedback not used (not requested for
Category 1).
• Each output can be set as AUTO or MANUAL
RESTART.
Example with external relay Example with the internal relay only
Category 2. Outputs with single Category 2 relay with OTE outputs. Each MOR4/S8 unit can have
up to 4 of these outputs.
Features:
• Internal relays are always monitored.
• Monitored EDM feedback.
• The output can be configured with Manual
or Automatic restart. The EDM feedback
monitor cannot be activated with the
manual restart.
• The feedback is monitored only if
Automatic reset is selected.
• To use the manual reset, a dedicated logic
must be provided. Refer to the following
paragraph.
(Output Test Equipment)

OTE (Output Test Equipment) with configurations of category 2 is mandatory because it is
necessary for the reporting of hazardous failures in accordance with EN 13849-1: 2015.
OTE: The OTE (Output Test Equipment) output is:
ï‚· ON in normal operation
ï‚· OFF in case of an internal error or a fault associated with feedback from the external
contactors (OFF). This permits to inform the machine logic with the aim of stopping the
dangerous movement or at least signaling the fault to the user.
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