Sartorius DCU 3, Operator'S Handbook Manual

Page: 62 / 150

Operators Handbook DCU3 – System
6., Main function „Control Loops“
BAEDCU3 - Rev. 4.6 - 0504 6 - 28
6.17.2 Operating Display
Tag Entry Displayed value or function, required input
LEVHI on / off Signal of level sensor (on = level exceeds the limit)
MODE Input of controller mode
off
−
controller off, harvest and feed pump off
auto
−
controller on
manual
−
manual access to controller output
PUMP Feed /
Harvest
Selection of pump function
−
Either a pump for dosing or a harvest pump can be controlled
OUT on /off Output state (on=active), inputs only in mode „manual“
PULSE m:s Input of reset time for the pump in [minutes:seconds]
SENSI low / high Setting of the sensitivity for the amplifier
DI ALARM Enabling the display of digital input alarms
6.17.3 Operation
1. Adjust the sensitivity of level sensor as low as possible to avoid unintended activation of
pump by foam. In addition the level amplifier acts using a delay time (5 sec.) to avoid unin-
tended activation of the level control due to splashing medium.
2. Adjust the reset time of the pump (PULSE) so that the number of pump cycles is minimized.
6.17.4 Special Notes
The dosing counter LEVEL will automatically be activated, whenever the modes „auto“ and
„manual“ are selected.