3.8 SP-##
Special
Functions
Parameter group for configuring special frequency
converter functions.
SP-00 Fault Level
Use this parameter to customise fault levels.
Option:
Function:
[0]
Off
Use
[0] Off
with caution as it ignores all
warnings and alarms for the selected
source.
[1]
Warning
[2]
Trip
Changing a fault level from default option
[3] Trip Lock
to
[2] Trip
leads to the
automatic reset of the alarm. For alarms
involving overcurrent, the frequency
converter has a hardware protection that
issues a 3-minute recovery after 2
consecutive overcurrent incidents, this
hardware protection cannot be overruled.
[3]
*
Trip Lock
[4]
Trip w.
delayed reset
Failure
Alarm
Off
Warning
Trip
Trip
Lock
Inverter
overloaded
9
X
X
Overcurrent
13
X
D
Current limit
59
X
Table 3.12 Selection of Choice of Action when Selected Alarm Appears
3.8.1 SP-1# Line On/Off
Parameters for configuring mains failure monitoring and
handling.
SP-10 Line failure
Option:
Function:
Select the function by which the frequency
converter must act when the threshold set in
parameter SP-11 Line Voltage at Input Fault
has
been reached or a
Mains Failure Inverse
command is activated via 1 of the digital inputs
(parameter group
E-0#
).
Only selections
[0] No function
,
[3] Coasting,
or
[6] Alarm
are available when
parameter P-20 Motor Construction
is set to
[1]
PM, non-salient SPM
.
[0]
*
No
function
The energy left in the capacitor bank is used to
run the motor, but is discharged.
[1]
Ctrl.
Decel
The frequency converter performs a controlled
decel.
must be set
to
[0] Off
.
SP-10 Line failure
Option:
Function:
[3]
Coasting
The frequency converter turns off and the
capacitor bank backs up the control card, thus
ensuring a faster restart when mains reconnect
(at short power zags).
[4]
Kinetic
back-up
The frequency converter rides through by
controlling speed for generative operation of the
motor utilising the inertia moment of the system
as long as sufficient energy is present.
[6]
Alarm
NOTICE
For best performance of controlled decel and kinetic
back-up, set
parameter H-43 Torque Characteristics
to
[0]
Compressor
or
[1] Variable Torque
(no Energy Saving
should be active).
Illustration 3.31 Controlled Decel - Short Mains Failure.
Decelling to stop followed by accelling to reference.
Illustration 3.32 Controlled Decel, Longer Mains Failure.
Decelling as long as the energy in the system allows for it,
then the motor coasts.
Illustration 3.33 Kinetic Back-up, Short Mains Failure.
Ride through as long as the energy in the system allows it.
Parameter Description
76
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DET-620D
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