Endress+Hauser Prosonic S FMU90 PROFIBUS DP - Configuring the Alarm or Diagnostics Relay

Commissioning Prosonic S FMU90 PROFIBUS DP
68 Endress+Hauser
Configuration of the limit relay
1. Navigate to the parameter set Relay/controls → Relay configurat. → Relay N
2. In the Function parameter, select the Limit option.
 The Function picklist is displayed.
3. Select the variable to which the limit value refers.
4. In the Limit type parameter, select the appropriate limit type (see above).
5. For Limit type = Standard:
In the Switch-on point parameter, specify the switch-on point.
6. For Limit type = Standard:
In the Switch-off point parameter, specify the switch-off point.
7. For Limit type = Tendency/speed:
In the Switch on/min parameter, specify the switch-on point for the speed of
change.
8. For Limit type = Tendency/speed:
In the Switch off/min parameter, specify the switch-off point for the speed of
change.
9. For Limit type = Inband or Out of band
In the Upper switchpt. parameter, specify the upper switch point.
10. For Limit type = Inband or Out of band
In the Lower switchpt. parameter, specify the lower switch point.
11. For Limit type = Inband or Out of band
In the Hysteresis parameter, specify the hysteresis for the switch points.
12. In the Switch delay parameter, specify the switch delay for the relay.
 The relay only switches when the limit value has been exceeded for the length of
time specified here.
13. In the Invert parameter, specify whether the switching direction of the relay is to be
inverted in relation to the defined behavior.
14. In the Error handling parameter, specify the behavior of the relay if an error occurs.
9.4.6 Configuring the alarm or diagnostics relay
1. Navigate to: Relay/controls → Relay configurat. → Relay N
2. In the Function parameter, select the Alarm/diagnost. option.
 The Function picklist is displayed.
3. Specify whether the relay indicates an alarm (Alarm relay option) or up to two user-
definable device states (Diagnostic option).
4. For Function = Diagnostic
In the Allocation 1 and Allocation 2 parameters, select the device states that are to
be indicated by the relays.
5. In the Invert parameter, specify whether the switching direction of the relay is to be
inverted in relation to the defined behavior.
9.4.7 Configuring the time pulse relay
A time pulse relay generates a short pulse at regular intervals.