Vacon 50X, Руководство пользователя

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vacon 50x parameters vacon 76
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NOTE: Current limit is only available when Parameter 501 is set to Linear Auto. If Param-
eter 501 is set to Vector, then the Current Limiting values will actually be Torque Limiting
values.
This parameter allows the function to disable either (a) undervoltage ride-through or (b)
continuous Line Voltage Tracking (LVT) that produces dynamic Undervoltage Ride-Thru
Thresholds. The following data values may be assigned to this parameter:
Parameter Value Description
Disabled This turns off the Undervoltage Ride-Thru function.
w/ LVT This enables the standard Ride-Thru algorithm in the V/Hz
modes and allows the choice of algorithm in the Linear Auto
and Vector modes.
w/o LVT This option operates in the same way as “w/ LVT” except that
the Line Voltage Tracker function of the Undervoltage Ride-
Thru is not active. The Line Voltage will be estimated on pow-
ering up the drive.
No UV Fault This mode is the same as “/o LVT” except if the bus recover
from the ride-thru timeout state the under voltage fault is not
generated. The bus voltage system will reset and goes back
thru the startup sequence.
The Vacon 50X drive provides a Current Limit feature. With this feature enabled, the
drive’s frequency is automatically reduced when operating in motoring mode to keep the
measured torque within limits. When operating in regenerative mode, the output fre-
quency can be automatically increased for the same reason. In addition to the current
limit parameters that activate the Current Limit mode, more current limit parameters
are available to adjust the drive’s response to the load demands. The following data val-
ues may be assigned to this parameter:
The following data values may be assigned to this parameter:
Parameter Value Description
Fixed Lvls The fixed levels set in parameters 601, 602, 603 and 604 de-
termine the current limit in each of the four quadrants of op-
eration.
Vin2 Vin2 analog input sets the current limit value, range 0–200%
Cin Cin analog input sets the current limit value, range 0–200%
Vin2 Motor Vin2 analog input sets the motoring current limit value, range
0–200%
Cin Motor Cin analog input sets the motoring current limit value, range
0–200%
Vin2 F-Mtr Vin2 analog input sets the FWD motoring current limit value,
range 0–200%
526 UV Ride-Thru En Default = w/ LVT
Range: Text string
Level 2
Summary of UV Ride-Thru Enable Parameter (Parameter
526)
Parameter Setting Tracking
Ride-thru
mode
UV Fault
Disabled Disabled Disabled Disabled
w/ LVT Enabled Enabled Enabled
w/o LVT Disabled Enabled Enabled
No UV Fault Disabled Enabled Disabled
600 Current Lim Sel Default: Fixed Lvls
Range: Text string
Level 2