Siemens PROFIBUS PA SIPART PS2 Manual page 100

Operation
40.AFCT
Limit
A2
A1
MIN
MIN
MAX
--MIN
--MIN
--MAX
41.A1
42.A2
98
Alarm function
There are 6 setting capabilities available:
1. Min Max
2. Min Min
3. Max Max
4. --Min --Max (inverted reporting)
5. --Min --Min (inverted reporting)
6. --Max --Max (inverted reporting)
way
MAX
MIN
MAX
--MAX
--MIN
--MAX
Please note:
• the two limit values in the control system can be individually evalua-
ted only when adjusting 1 or 4, because in the status reports READ-
BACK and POS_D (chapter 5.3.2 page 129) the two limit values A1
and A2 are "or linked".
• the response of the two limit values in the status reports READ-
BACK and POS_D cannot be recognized if the positioneris in ma-
nual mode.
• the direction of control action shown on the alarm module is rever-
sed.
• the direction of control action is also reversed if A1 is set to greater
than A2.
• the hysteresis of the limit value is 1% as standard.
• in the factory setting "OFF" the output of both alarms A1 and A2 is
deactivated.
Response threshold alarm 1
and
Response threshold alarm 2
The alarm thresholds are related to the mechanical path (MPOS-scale).
Alarm module
A1 A2
A1 = 48
AFCT = MIN / MAX
A2 = 52
Travel = 45 Activated
Travel = 50
Travel = 55 Activated
A1 = 48
AFCT = --MIN / --MAX
A2 = 52
Travel = 45 Activated
Travel = 50 Activated Activated
Travel = 55 Activated
A1 = 52
AFCT = MIN / MAX
A2 = 48
Travel = 45 Activated
Travel = 50 Activated Activated
Travel = 55 Activated
A1 = 52
AFCT = --MIN / --MAX
A2 = 48
Travel = 45 Activated
Travel = 50
Travel = 55 Activated
SIMATIC
MIN MAX
Activated
Activated
Activated
Activated
Activated
Activated
Activated
Activated
Activated
Activated
SIPART PS2 PA Manual
A5E00127926-03