▪
Data provided by the manufacturer
▪
Electrical data of the pump set, particularly the rated current
▪
Ensure short start ramps (max. 5 s)
▪
Only start speed-controlled operation after 2 minutes at the earliest.
Pump start-up with long start ramps and low frequency may cause clogging.
Observe the following limits when operating the pump set via frequency inverter:
▪
Only utilise up to 95 % of the motor power rating P
2
indicated on the name
plate.
▪
Frequency range 25-50 Hz
If the pump sets are operated via frequency inverter, RFI emissions will occur, the
level of which varies depending on the inverter used (inverter type, interference
suppression features, manufacturer). To ensure compliance of the drive system
consisting of submersible motor and frequency inverter with the limits stipulated by
EN 50081, it is imperative to observe the EMC information provided by the inverter
manufacturer. If the manufacturer recommends shielded power cables, a pump set
with shielded power cable must be used.
The pump set generally meets the requirements on interference immunity stipulated
by EN 50082. For monitoring the sensors installed, the operator must ensure
sufficient interference immunity by selecting and routing the cables in the plant
accordingly. No modifications are required on the power/control cable of the pump
set itself. Suitable analysing devices must be selected. In this case we recommend to
monitor the leakage sensor fitted inside the motor by means of a special relay
available from KSB.
5.4.1.4 Sensors
DANGER
Operating an incompletely connected pump set
Explosion hazard!
Damage to the pump set!
▷
Never start up a pump set with incompletely connected power cables or non-
operational monitoring devices.
CAUTION
Incorrect connection to power supply
Damage to the sensors!
▷
Observe the limits stated in the following sections of this manual when
connecting the sensors.
The pump set is equipped with sensors designed to prevent hazards and damage to
the pump set.
Measuring transducers are required for analysing the sensor signals supplied. Suitable
devices for 230V~ can be supplied by KSB.
NOTE
Reliable and safe operation of the pump within the scope of our warranty is only possible
if the sensor signals are properly analysed as stipulated in these operating instructions.
All sensors are located inside the pump set and are connected to the power cable.
For information on wiring and core marking please refer to the wiring diagrams.
The individual sensors and the limit values to be set are described in the following
sections.
Start-up
Operation
Electromagnetic
compatibility
Interference immunity
5 Installation at Site
28 of 66
Amarex® N
Goodnal STP ST041 Biological Treatment (KSB WAS PUMP 1 & 2 PU-0530-010 OM Instructions) Vendor Manual
Q-Pulse Id VM381
Active 29/10/2013
Page 30 of 76
