KSB PumpDrive 2 - Starting the Functional Check Run Via Digital Input; Analog Inputs

8 Commissioning/Shutdown
118 of 212
PumpDrive 2
NOTE
If dry running protection was activated via an external sensor, sensorless dry
running detection is inactive.
Table90: Behaviour of the frequency inverter during dry running via digital input
Parameter Description Possible settings Refers to Factory setting
3-9-7-1 External Dry Running Detection
Behaviour
Alarm behaviour of external dry
running detection
▪ Non-self-
acknowledging
▪ Self-acknowledging
3-8-6-1
3-8-6-2
3-8-6-3
3-8-6-4
3-8-6-5
Non-self-acknowledging
8.10.1.5 Starting the functional check run via digital input
NOTE
The functional check run is only performed in automatic mode.
NOTE
When a digital input is assigned the Functional Check Run function, this has the
highest priority. In this scenario, an automatic functional check run via the control
panel is not possible.
Table91: Example of starting a functional check run via digital input3
Parameter Description Possible settings Factory setting
3-8-6-3 Digital Input 3 Function
Configurable function of digital input3
Start Functional Check Run No Function
8.10.2 Analog inputs
Two analog inputs are available. These analog inputs can be used to apply the
setpoints of external control systems or actual value signals of pressure sensors to the
frequency inverter, for example. To this end, a signal type and function must be
selected for the respective analog input. A corresponding upper and lower limit can
then be defined to scale the measuring range to the signal selected.
NOTE
The parameter values and value ranges/units entered are mutually dependent. This
is why the first step in parameterising the frequency inverter is always to specify the
applicable value range and units (refer to parameter 3-11). If the value range or
unit is subsequently changed, all dependent parameters must be checked for
correctness again.
For example, if a differential pressure sensor (4 - 20mA; 0 - 6bar) is to be connected
as an actual value signal, the following settings must be made:
▪ Signal type "4 - 20 mA"
▪ "Differential pressure" function
▪ Analog input lower limit: 0bar
▪ Analog input lower limit: 6bar
It is not possible for the same analog input to be parameterised differently for the
individual frequency inverters used in multiple pump configurations.
If signal type 4 - 20 mA or 2 - 10 V is parameterised at an analog input without a live-
zero signal present at the device, the frequency inverter outputs the Broken Wire
warning. (ðSection8.8.2.6,Page91)