KSB Delta Macro F User Manual

9 Trouble-shooting
51 of 92
KSB Delta Macro
1983.843/04-EN
9.2 Trouble-shooting: frequency inverter
WARNING
Improper work to remedy faults
Risk of injury!
▷ For any work performed to remedy faults, observe the relevant information
given in this operating manual and/or in the product literature provided by the
accessories manufacturer.
If problems occur that are not described in the following table, consultation with the
KSB service is required.
A Mains fuse rating too small for the nominal mains current.
B Motor does not start.
C Motor running unevenly.
D Max. speed not reached.
E Motor running at maximum speed only.
F Motor running at minimum speed only.
G No/faulty 24V supply.
H Wrong direction of rotation of the motor.
I Fault message/protective tripping.
Table22: Trouble-shooting
A B C D E F G H I Possible cause Remedy
- ✘ - - - - ✘ - - No voltage Check the mains voltage; check the mains fuses.
- ✘ - - - - - - - No enable Check enable via DIGIN-EN and system start.
✘ - - - - - - - - Mains fuse rating too small for
frequency inverter input
current
Check configuration/selection of mains fuse.
- - - ✘ - - - - - No setpoint signal or setpoint
set too low / drive overloaded
and in i
2
t control mode
Check setpoint signal and operating point.
- - - - ✘ - - - - Process-related persistent
control deviation (actual value
smaller than setpoint) or no
actual value (e.g. due to
broken wire)
Check setpoint signal/actual value signal. Check
operating point. Check controller setting.
- ✘ -
-
- - - - - ✘ Permissible voltage range
undershot/exceeded
Check mains voltage; supply frequency inverter with
required voltage.
- - - - - - - ✘ - Wrong direction of rotation
setting
Change the direction of rotation.
- - ✘ ✘ - - - - ✘ Frequency inverter overloaded Reduce the power input by lowering the speed;
check the motor/pump for blockages.
- ✘ - - - - - - ✘ Short circuit in control cable/
pump blocked
Check/replace control cable connections. Remove the
blockage manually.

KSB Delta Macro F Specifications

General

Brand	KSB
Model	Delta Macro F
Category	Water Pump
Language	English