OPERATION
4
11
OPTIMASS 6400
www.krohne.com11/2017 - 4004960802 - AD OPTIMASS 6400 SIL R02 en
4.2.2 Switch to safe operation
In order to switch the device from non-SIL operation to safe operation several steps have to be
performed.
1. Switch the device to safe configuration state by setting safety mode to "SIL Mode" (menu C7.2).
2. Configure the device for safe operation (for further information refer to
Safe configuration
on
page 11).
3. Perform safe parameter verification (for further information refer to
Safe parameter verifica-
tion
on page 13).
4.2.3 Switch to non-SIL operation
In order to switch the device from safe operation to non-SIL operation several steps have to be
performed.
1. Switch the device to safe configuration state by unlocking the device (for further information
refer to
Unlock of device
on page 15).
2. Change of safety mode to "Non-SIL Mode" (menu C7.2).
3. Perform confirmation (for further information refer to
Confirmation
on page 14).
4.2.4 Safe configuration
In safe configuration state some parameters are reset to their factory value and locked because
they have direct impact on the safety function of the device. Following parameters are reset to
factory configuration:
Fixed parameters in safe operation
WARNING!
The device cannot be switched to safe configuration or safe operation if expert mode is enabled
or a lock jumper is present at the local display.
Parameter Value
Safe Current Output Current Span 4-20 mA
Safe Current Output Polarity both
Safe Current Output Trim Values disabled
Safe Current Output Loop Current Mode enabled
Safe Current Output Operation Mode enabled
Density Calibration factory calibration
Operation Mode measurement
Pressure Suppression disabled
Density Mode process
Sensor Low Flow Cutoff factory setting (0.2% of nom. mass flow)
Process Noise Damping 1.0 s
Flow Offset 0kg/s
Flow Correction 0%
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