GENER
AL
INFO
SPECS
MOUNTING
ST
AR
T UP
OPER
ATION
M
AINTENANCE
DIMENSIONS
HO
W
TO
ORDER
LOGISTICS
61
NDX VALVE CONTROLLER
Status limits are listed and explained in following tables.
Control Performance Diagnostics Limits
Parameter name
Description
Default value
Limits/options
Travel Ratio Limit
Set travel ratio alert limit.
If a value is lower than the limit, a
status is activated for the device
and an event is generated.
0 %
0100 %
Steady State Deviation High Limit
Set steady state deviation high
alert limit.
If a measurement exceeds the
limit, a status is activated for the
device and an event is generated.
5 %
0100 %
Steady State Deviation Last Day
Trend Limit
Set steady state deviation last day
trend alert limit.
A good value for most of the
cases for steady state deviation
is <1 %. More than 5 % means
that control performance is
decreased.”
2 %
0100 %
Positioner Diagnostics Limits
Parameter name
Description
Default value
Limits/options
Total Relay Valve Travel Limit
Set the total relay valve travel
alert limit.
1000 000
010 0000 0000
Date For Total Operation Time
Alert
Select date for next alert.
25 years after first start up
0100 years
Actuator Diagnostics Limits
Parameter name
Description
Default value
Limits/options
Total Actuator Travel Limit
Set the Total Actuator Travel alert
limit.
Counter increases by 1 whenever
the valve has travelled one full
stroke, or 100 % of the valve
movement.
The valve is considered to have
moved when the valve position
c/ 0.5 %
E.g. when the valve moves 10 %,
the counter increases by 0.1
1000 0000
010 0000 0000
Total Actuator Reversals Limit
Set the Total Actuator Reversals
alert limit.
This counter increases by 1
whenever the direction of valve
movement changes.
1000 0000
010 0000 0000
13 DEVICE TYPE MANAGER (DTM)
OPER
ATION
Содержание NELES NDX 511 Series
Страница 80: ...80 NDX VALVE CONTROLLER 15 1 NDX1510 LINEAR APPLICATION ROTARY APPLICATION Fig 98 15 DIMENSION DRAWINGS ...
Страница 82: ...82 NDX VALVE CONTROLLER 15 3 NDX_512_ Tightening torque 15 Nm 48 Fig 100 15 DIMENSION DRAWINGS ...
Страница 84: ...84 NDX VALVE CONTROLLER Fig 103 NDX_511_ Fig 104 NDX_512_ 15 DIMENSION DRAWINGS ...