KSB Profibus PumpDrive 2, Supplementary Operating Manual

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1 Supplementary Operating Manual
19 of 28
Profibus module
1.7.2 Definition of the "rotodynamic pump” module available in the cyclic data
exchange
The Rotodynamic Pump module serves to enter setpoints and control values for the
pump set in a compact form. It also provides key information on the current
operating status.
A variety of data types is used within the address range of the module. Binary
information and requests in the module are bit-coded; the other data points are
transmitted as integer values.
The Rotodynamic Pump module is the most important data point for control of the
frequency inverter and is structured as follows:
▪ Rotodynamic Pump Input = 6 Byte (Byte, Byte, Word, Byte Byte)
▪
Rotodynamic Pump Output = 5 Byte (Byte, Byte, Byte, Word)
NOTE
Depending on the make of PLC, pay special attention to the area of the memory
into which the Rotodynamic Pump module must be integrated.
Consistency on the part of the Rotodynamic Pump module can only be ensured if the
module is located in the process image area or if the module is copied into or out of
a buffered area by special system modules. The Rotodynamic Pump module contains
bit variables, byte variables and word variables. This does not apply to the process
variable view. A process image is not required as byte operations, word operations or
double-word operations are provided there which ensure the module's consistency.
Table 8: Rotodynamic Pump module, input
Offset byte. Bit Data type Parameter name Functional element Description Unit
0.7 BOOL AT_MIN_SPEED PumpSpeedMin.VAL
UE 1: Pump running at minimum speed -
0.6 BOOL STANDBY StandBy.VALUE 1: Pump ready for start-up -
0.5 BOOL AT_MAX_SPEED PumpSpeedMax.VAL
UE 1: Pump running at maximum speed -
0.4 BOOL PUMP_ACTIVE PumpActivation.VAL
UE 1: Automatic mode activated
(AUTO is displayed) -
0.3 BOOL WARNING - 1: Active warning -
0.2 BOOL FAULT - 1: Active pump alert or system alert -
0.1 BOOL ON_OFF GenericPump.ON_OF
F 1: Pump is ON -
0.0 BOOL ACCESS_MODE GenericPump.ACCESS
_MODE 1: Bus control is enabled -
1.7 BOOL DIRECTION - Not supported -
1.6 BOOL ROTATION - Not supported -
1.5 BOOL AT_MAX_POWER - Not supported -
1.4 BOOL SETPOINT_INFLUENCE - Not supported -
2 INT PROCESS_FEEDBACK PumpActuation.FEED
BACK Actual value of the active process variable (see
CB_CONTROL_MODE) 0,01 %
4 BYTE CB_CONTROL_MODE PumpActuation.CB_C
ONTROL_MODE
128: Off
Control system OFF, fixed speed operation
-
129: Discharge pressure -
130: Suction pressure -
131: Differential pressure -