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Appendix
Code
Parameter – Readings/
no.
values [default setting]
Note: Codes with marked with an asterisk (*) must be enabled with Code 3 prior to configuration.
49* A4 Status classification of
PST status
A5 Recommended min.
sampling time
A6 Unassigned
A7 Δy-monitoring refer-
ence value
A8 Activation Δy-monitor-
ing
[No], YES, ESC
A9 Δy-monitoring value
0 to 100 %,
[0 %]
d
Step parameters for the partial stroke test (PST)
d1 Unassigned
d2 Step start
0.0 to [100.0]
86
Description
C
Maintenance required
OK
No message
CR
Maintenance demanded
b
Maintenance alarm
S
Out of specification
Read only
Scan time [s] required to plot the complete step response test in a
graph.
Read only
The valve moves to the valve position Step start (Code 49 - d2) and
Step end (Code 49 - d3) with certain control pulses. The difference
between these control pulses creates the Δy value [1/s].
The Δy-monitoring reference value applies to the adjusted step val-
ues (Code 49 - d2 and Code 49 - d3) and for the selected ramp
times (Code 49 - d5 and Code 49 - d6). The Δy-monitoring refer-
ence value must be determined again if any of the above mentioned
values change.
Read only
Activates or deactivates Δy-monitoring.
The percentage [%] of the entire range of the control pulse between 1
and 10000 1/s (example: 10 % = 1000 1/s)
The partial stroke test is canceled if the change in drive signal (Δy)
varies from the Δy-monitoring reference value by this amount.
Start value for step response
EB 8389S EN
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