Grundfos GI SPC Series User Manual

29
English
(GB)
EF
External fault
SI external fault caused by
actions of input terminals
Check the external device input.
CE
485 Communication
error
1. The baud rate setting is
incorrect.
2. Fault occurs to the
communication wiring.
3. The communication
address is wrong.
4. There is strong interference
to the communication.
5.
1. Set proper baud rate.
2. Check the communication connection distribution
3. Set proper communication address.
4. Change or replace the connection distribution or
improve the anti-interference capability.
ItE
Current detection fault
1. The control panel
connector is in poor
contact.
2. The Hall component is
damaged.
3. The magnifying circuit is
abnormal.
1. Check the connector and rewire.
2. Replace the Hall component.
3. Replace the main control panel.
EEP
EEPROM fault
1. Error occurs in writing or
reading control
parameters.
2. EEPROM is damaged.
1. Press STOP/RST to reset.
2. Replace the main control panel.
PIDE
PID feedback fault
1. PID feedback is offline.
2. The PID feedback source
disappears.
1. Check the PID feedback signal line.
2. Check the PID feedback source.
END
Running time reached
The actual running time of
the pump controller is longer
than the preset running
time.
Contact grundfos to adjust the preset running time.
OL3
Electrical overload
The pump controller will
report overload pre-alarm
according to the set value.
Check the load and the overload pre-alarm points.
dEu
Velocity deviation fault
The load is too heavy or
stalled.
1. Check the load and ensure it is normal. Increase the
detection time.
2. Check whether the control parameters are normal.
STo
Maladjustment fault
1. The control parameters
of the synchronous
motors not set properly.
2. The autotuning
parameter is not correct.
3. The controller is not
connected to the motor.
1. Check the load and ensure it is normal.
2. Check whether the control parameter is set properly or
not.
3. Increase the maladjustment detection time.
LL
Electronic underload
fault
The controller will report the
underload pre-alarm
according to the set value.
Check the load and the underload pre-alarm points.
tSF
Hydraulic probe damage
The hydraulic probe is
damaged.
Replace the hydraulic probe.
PINV
PV reverse connection
fault
The PV wiring is not properly
performed.
Identify the positive and negative PV terminals and rewire.

Grundfos GI SPC Series Specifications

General

Brand	Grundfos
Model	GI SPC Series
Category	Controller
Language	English