Muting And Override Functions; General Information; Muting Function - Omron F3S-TGR-SB2-KXC User Manual

Section 7:

Muting and override functions

7-1

General information

The muting and override functions enable the SLC to be bypassed for operational requirements. As required
by current standards, the SLC is provided with inputs for the activation of these functions. It should however
be remembered that these functions basically override the system and they should therefore be used with
due care.
7-2

Muting function

As mentioned in the introduction, the muting function can be enabled with any SLC by simply connecting the
LMS muting indicator when the SLC is switched off.
The presence of this indicator is recognised when the SLC is switched on. If its presence is detected, the
SLC will enable the muting function and if it is not present the SLC will ignore any request for muting. It is
important to note that if the muting indicator is connected when the SLC is already connected to the
power supply, it will not be recognised and the muting function will not be enabled. Once enabled, if
the LMS muting indicator develops a fault or is removed without first disconnecting the SLC's power supply,
it will signal an error with the muting light, as described in section 10.
To disable the muting function, the power supply must be turned on without the LMS muting indicator con-
nected.
In brief: this function, present on all SLC s, is enabled and disabled by means of the following simple proce-
dure:
- Disconnect the SLC's power supply.
- Connect the appropriate LMS muting indicator and the muting sensors (see section 6)
- Restore the SLC's power supply.
Bypass the muting function as follows.
- Disconnect the SLC's power supply.
- Disconnect the LMS muting indicator and the muting sensors (see section 6)
- Restore the SLC's power supply.
16 7-1 General information