Endress+Hauser RIA452 Manuel De Mise En Service page 69

RIA452
Endress+Hauser
Pump monitoring function
The digital inputs 1-4 are permanently assigned to each relay 1-4. If the function of the digital input
is set to pump monitoring, the sampling time starts when the relay is switched on. When the samp-
ling time expires, the digital input is sampled continuously. If the signal is not active, the relay is
switched off immediately and a fault message is generated (see ). If the alternate function for this
relay is activated, a relay with an alternate function is also searched for and switched on.
Level
Threshold
Max + hysteresis
Relay
Digital
input
Fig. 14: Pump monitoring, pump OK
Fig. 15: Pump monitoring, pump fault
The following parameters must be configured:
Menu
DIGITAL INP./M5
Sampling time
Pump
Relay remains
feedback
energised
OK
Function (menu item)
Function
Level
Sampl. time
Commissioning
Threshold
max
t
Quiescent state
Fault state
Active
Inactive
Setting value
Pump
Low or High
Sampling time in seconds
69