A1' / '46.A2' Response Threshold Of Alarm; Fct' Function Of The Fault Message Output - Siemens SIPART PS2 Series Operating Instructions Manual

Parameter assignment
8.4 Description of parameters
8.4.2.16

'45.A1' / '46.A2' Response threshold of alarm

Adjustment range:
Purpose:
Factory setting:
8.4.2.17

'47.\\FCT' Function of the fault message output

Requirement:
Possible settings:
Purpose:
Factory setting:
158
0.0 ... 100.0
These parameters are used to specify when an alarm should be
displayed. The response thresholds of the alarms (in percent) refer
to the MPOS scale in the '37.YNRM' Standardization of manipu‐
lated variable (Page 151) parameter. The MPOS scale corre‐
sponds to the mechanical travel.
Depending on the setting of the alarm function in the '44.AFCT'
Alarm function (Page 156) parameter, the alarm is triggered upon
an upward violation (Max) or downward violation (Min) of this re‐
sponse threshold.
With 'A1': 10.0
At least one of the following modules is fitted
● Digital I/O Module (DIO)
● Inductive Limit Switches (ILS)
● Mechanic Limit Switches (MLS)
Normal direction of action
●
● nA
● nAb
The fault message in the form of monitoring of control deviation
over time is also triggered by the following events:
● Power failure
● Processor fault
● Actuator fault
● Process valve fault
● Failure of supply pressure PZ
● Threshold 3 message of extended diagnostics
See Parameter '52.XDIAG' Activating for extended diagnostics
(Page 162).
The fault message cannot be switched off, but it can be suppressed
(factory setting) when you exit 'Automatic' mode. Set the ' FCT'
parameter to ' nA' to also generate a fault message here.
You also have an option to "or" the fault message with the status of
the digital inputs. To do this, first set the '42.BIN1' / '43.BIN2' digital
input function (Page 155) parameter to 'on' or '-on'. Subsequently
set the ' FCT' parameter to ' nAb'.
Select the '- ' setting if you want the fault message to be output with
inverted direction of action.
With 'A2': 90.0
Inverted direction of action
● -
● - nA
● - nAb
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE