JUMO 705010 mTRON T - Multichannel Controller Module Operating Manual - Manual (Page 98)

6 Configuration
98
Hysteresis function
The designations "Asymmetric left" and "Asymmetric right" typically relate to alarm functions
AF3/AF4 and AF7/AF8. The designation is not conclusive for alarm functions AF1/AF2 and
AF5/AF6.
 Chapter 6.11.2 "Alarm and hysteresis functions", page 100
Start-up alarm suppression
Active start-up alarm suppression means:
•
After power on, the output signal remains inactive, even if the actual value is in the alarm
range.
• If the limit value or setpoint value is changed so that the actual value is then within the alarm
range, while the actual value is outside of the alarm range, the output signal remains inac-
tive.
• The limit value monitoring only starts to operate according to its alarm function again once
the actual value has left the alarm range. This means that the output signal remains inactive
until the actual value returns to the alarm range.
Example of active start-up alarm suppression
The following example shows monitoring of the actual value "x" with the alarm function AF4
(without switching differential) for a specified limit value (1). The setpoint value is changed from
w1 to w2.
Output state: The output signal is not active as the actual value is outside of the alarm range
(gray area).
Change of setpoint value: The output signal remains inactive, although the actual value is
now within the alarm range.
1
w1 = x
0
(1)
w2 x
(1)
1
0