4
OPERATION
10
OPTIMASS 6400
www.krohne.com 11/2017 - 4004960802 - AD OPTIMASS 6400 SIL R02 en
4.1 Condition of use
The configuration is protected by a password. For more information on password protection and
device configuration refer to
Unlock of device
on page 15.
The current output at terminal C is the safety relevant output for safe operation.
4.2 Configuration of device for usage in safety application
Safety relevant parameters are write-locked and cannot be changed during safe operation.
Parameters which are not safety relevant can be changed in safe operation. If they are supposed
to be write protected, please use the protection in menu C6.3.4.
4.2.1 Change of safety mode
INFORMATION!
Only properly trained and authorised personnel shall change device settings. Keep a report of
changes to the device settings. These reports must include the date, the menu item, the old
setting and the new setting.
Non-SIL
operation
→
Set safety mode
to SIL mode →
Safe
configuration
→
Verify safe
parameters and
confirm
→
Safe operation
← Set safety mode
to non-SIL mode
and confirm
←←Unlock device ←
State Description Safe current output
Non-SIL operation Device can be used in non-SIL
application and all parameters can
be changed.
Measurement signal or failure signal
Safe configuration Device can be configured for safe
operation or device can device can be
switched to non-SIL mode.
Failure signal
Safe operation Device performs the safe
measurement according to its
configuration and all safety relevant
parameters are locked.
Measurement signal or failure signal
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