S M ART T EMP ER ATUR E MONITORI NG R EL AYS
STATUS
Approved
SECURITY LEVEL
Public
DOCUMENT ID.
2CDC112285M0201
REV.
B
LANG.
en
PAGE
28/42
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Reset / trip acknowledge
The CM-TCN devices offer two reset options: manual or automatic reset. The de-
fault setting for all relays is automatic reset.
When the configuration is automatic reset, the relay will switch back to its de-
fault position as soon as the measured temperature is below or above (depend-
ing if over- or under temperature monitoring is set) threshold value plus hystere-
sis value and no other switching condition is active.
With the manual reset the relay will remain in the switched position even if the
good state is reached again. The user needs to manually activate the reset either
via the display or remotely via terminals S1-C.
Relay 1 – Reset:
Cyclic switching function
The assignment of the cyclic switching functions follows the same principle as
the assignment of the threshold signals.
Sensor error signals
The assignment of the sensor errors follows the same principle as the assign-
ment of the signals.
Relay 1 – Sensor error:
Contrary to the previous signals the sensor errors are default signals. They are
set in case of a sensor fault. The measurement circuits detect short circuit or
wire break at their inputs. These sensor errors can be assigned to any relay. No
additional configuration is required.