KSB PumpDrive 2 - Pumpmeter Connection Via Modbus

8 Commissioning/Shutdown
128 of 212
PumpDrive 2
1
2
A
Fig.81: PumpMeter as actual value source via Modbus
1 PumpMeter as actual value source
2 PumpMeter connection to the M12 module, inputA, via Modbus
Table103: PumpMeter connection via Modbus
Parameter Description Possible settings Factory setting
3-8-4-1 Function M12 Module Input A
Function of M12 module, inputA. Internal
operating values cannot be used as an
actual value source.
PMtr Suction/Discharge Pressure OFF
Parameterising the M12 module for PumpMeter as an internal measured variable
(via Modbus)
If PumpMeter is only used as an internal measured variable at inputA of the M12
module (via Modbus) and not for control, the Function M12 Module Input A
parameter (3-8-4-1) must be set to PMtr Suction / Discharge Pressure.
NOTE
When changing parameter 3-8-4-1 to the above-mentioned value (in particular in
retrofit applications) a 24 V voltage reset is triggered, which is required for
initialisation of the bus connection to PumpMeter.
D
C
p
D
C
5 5
Δp
A
2
Δp
A
3
1
Δp
A
4
Fig.82: PumpMeter as internal measured variable per pump, external pressure sensor
as actual value source
1 External pressure sensor as actual value source
2 PumpMeter as internal measured variable for the master control device
3 PumpMeter as internal measured variable for auxiliary control device1
4 PumpMeter as internal measured variable for auxiliary control device2
5 Pre-configured cable for multiple pump configuration