Danfoss VLT AutomationDrive FC 301 Programming Manual page 168

VLT AutomationDrive FC 301/302
Programming Guide
Option Name Description
[0]* Off
RISK OF MOTOR DAMAGE
Using this option may lead to motor damage.
The drive does not issue a missing motor phase alarm.
[1] On Before each start, the drive checks if all 3 motor phases are present. The check is performed without any shaft
movement. The function also enables 3-phase detection in U/f and VVC+ mode. See description in parameter
4-58 Missing Motor Phase Function.
The table details the motor check at start for different motor control principles.
Table 301: Motor Check at Start for Different Motor Control Principles
Option Motor Check
at Start
[0] Off
[1] On
5.5.6 4-6* Speed Bypass
Some systems require that certain output frequencies or speeds are avoided due to resonance problems in the system. A maximum
of 4 frequency or speed ranges can be avoided.
Parameter 4-60 Bypass Speed From [RPM]
Table 302: Parameter 4-60 Bypass Speed From [RPM]
4-60 Bypass Speed From [RPM]
Default value: Size related
Conversion index: 67
Some systems call for avoiding certain output speeds due to resonance problems in the system. Enter the lower limits of the speeds
to be avoided.
Parameter 4-61 Bypass Speed From [Hz]
Table 303: Parameter 4-61 Bypass Speed From [Hz]
4-61 Bypass Speed From [Hz]
Default value: Size related
Conversion index: -1
Some systems require that certain output frequencies or speeds are avoided due to resonance problems in the system. Enter the
lower limits of the speeds to be avoided.
Parameter 4-62 Bypass Speed To [RPM]
Table 304: Parameter 4-62 Bypass Speed To [RPM]
4-62 Bypass Speed To [RPM]
Default value: Size related
Conversion index: 67
168 | Danfoss A/S © 2022.12
U/f
No function.
Check for missing motor phase before start is executed and enables
3-phase detection for U/f and VVC+ in parameter 4-58 Missing Motor
Phase Function.
Parameter type: Range, 0 - setting in par. 4-13 RPM, Array [4]
Data type: Uint16
Parameter type: Range, 0 - setting in par. 4-14 Hz, Array [4]
Data type: Uint16
Parameter type: Range, 0 - setting in par. 4-13 RPM, Array [4]
Data type: Uint16]
C A U T I O N
Parameter Descriptions
+
VVC Flux Flux
open closed
loop loop
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
AU275636650261en-000101 / 130R0334