Edwards nEXT400 User Manual

Length of power failure Control mode Behaviour of pump
Power is restored aer the rot
a-
onal speed of the pump decrea-
ses below 50% but before regen-
erave power stops
Parallel or serial control mode,
mer disabled
Regenerave power keeps all
output signals acve during the
power failure. As the mer is dis-
abled, the controller will go into
fail condion when the speed
decreases below 50% and will
display ashing error code 0.
When the power is restored, the
pump will not speed up unl the
error is cleared. To clear the er-
ror, send a stop command (paral-
lel or serial, depend on the con-
trol mode), send a start com-
mand to speed up the pump to
the designated speed.
Parallel or serial control mode,
mer enabled
Regenerave power keeps all
output signals acve during the
power failure. If power is re-
stored before the mer period
expires, the pump will speed up
to designated speed. If the mer
period expires, the controller will
go into fail condion and will dis-
play ashing error code 3. As
above, when the power is re-
stored, the pump will not speed
up unl the error is cleared. To
clear the error, send a stop com-
mand (parallel or serial, depend
on the control mode), send a
start command to speed up the
pump to the designated speed.
Power is restored aer the rot
a-
onal speed of the pump decrea-
ses below 50% and the regenera-
ve power stops
Parallel or serial control mode
Regenerave pow
er stops and
fails to keep output signals.
When power is restored, the
pump with parallel control will
automacally restart if the start
control on the logic interface is
set to start. The pump with serial
control requires a new start com-
mand to speed up the pump to
the designated speed. The fail
signals caused during the regen-
erave power period are lost
when the power is restored.
04/2022 - ©Edwards Limited
Page 79B80000880_G
B80000880_G - Operaon

Edwards nEXT400 Specifications

General

Brand	Edwards
Model	nEXT400
Category	Water Pump
Language	English