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Use in safety instrumented systems
16
Setting
• Operating mode =4..20mA input or HART master+4..20mA input
• Analog input 0% value must be set correctly.
• Analog input 100% value must be set correctly.
Analog output (2)
Make sure that the correct output is configured (Analog I/O B1-3 or Analog I/O C1-3).
Navigate to: Setup → Advanced setup → Input/output → Analog I/O
Setting
• Operating mode =4..20mA output or HART slave +4..20mA output
• Analog input source = AIO B1-3 value mA or AIO C1-3 value mA (depending on the
source)
• 0 % value
• 100 % value
• Used for SIL/WHG = Enabled
Digital output (3)
First select an alarm block (Alarm 1, Alarm 2, Alarm 3 or Alarm 4) for the limit value
settings.
Navigate to: Setup → Advanced setup → Application → Alarm → Alarm X
Setting
• Alarm mode = On
• Alarm value source = AIO B1-3 value mA or AIO C1-3 value mA (depending on the
source)
• HH alarm value, H alarm value, L alarm value and LL alarm value must be configured
in line with the application such that the valid range is within the HH, H and L, LL limits.
Make sure that the correct output is configured (Digital A1-2, Digital A3-4, Digital B1-2,
Digital B3-4, Digital C1-2, Digital C3-4, Digital D1-2, Digital D3-4).
Navigate to: Setup → Advanced setup → Input/output → Digital Xy-z
Setting
• Operating mode = Output passive
• Digital input source = selected alarm block (Alarm 1 any, Alarm 2 any, Alarm 3 any
or Alarm 4 any)
• Used for SIL/WHG = Enabled must be set to use this digital output as a SIL output.
5.2.3
Configuration method
When the devices are used in safety instrumented systems, the device configuration must
meet two requirements:
• Confirmation concept:
Proven, independent testing of safety-related parameters entered.
• Locking concept:
Locking of the device following parameter configuration (IEC 61511-1: 2016 Section
11.6.3)
To activate SIL mode, the device must run through an operating sequence, during which
the device can be operated via the device display or any Asset Management Tool (e.g.
FieldCare) for which integration is available.
"Expert mode"
A larger number of safety-related parameters can be freely configured here. This means
that the device can be adapted to difficult applications. However, the settings must be
checked by directly approaching the level in the tank or by applying a comparable method.
A tank with liquid can be used for example as a method for checking in the case of MAX
monitoring.
Proserve NMS80
Endress+Hauser
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