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Building Technologies Division User Manual LMS14… CC1U7471en
6 The settings in detail 28.01.2015
6.42 Remote reset
If the LMS14... has gone to lockout (phase STOE in the sequence diagram), a reset
with certain faults can be initiated via a suitable operator terminal (HMI/room unit). For
safety reasons, not all faults leading to lockout are enabled for reset from a remote
location.
The way lockout of the LMS14... can be detected and whether remote reset is permitted
depend on the type of operator terminal/room unit; for details, refer to the respective
documentation (refer to chapter Handling).
Using PC software ACS420, it is also possible to activate or deactivate the Remote
reset function for certain errors/error classes, if authorized.
6.42.1 Additional activation of remote reset capability
The Burner control menu of the ACS420 offers specific parameters for each of the 4
errors/error classes, which can be used to activate or deactivate the Remote reset
function.
Parameter setting 1 enables the Remote reset function, parameter setting 0 disables it
for these kinds of error.
Line no. Operating line
[4495.1] Remote reset SLT
[4496.1] Remote reset air
[4497.1] Rem res extran light
[4498.1] Remote reset flame
6.42.2 Restrictions in connection with remote reset
The LMS14... does not permit any number of remote reset operations; the number of
reset operations per unit of time are limited (5 resettings within 15 minutes). In case the
permissible number of reset operations are exceeded, the function is disabled until the
number of reset attempts in the last 15 minutes has been fewer than 5.
Any switching on/off of the mains network has no impact on the number of valid reset
attempts.
A hardware reset produces a reset of Temporal monitoring of attempts, which means
that after the respective reset, the number of remote reset attempts is always limited to
5.
Note!
When monitoring the reset attempts, the LMS14... measures the time between the
reset operations; after power ON, this reference is no longer available so that only 4
remote reset attempts might be allowed directly after power ON.
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