Start Adjustments - Danfoss VLT AutomationDrive EZ FC 321 Programming Manual

VLT® AutomationDrive EZ FC 321
Programming Guide

4.2.8 1-7* Start Adjustments

Parameter 1-70 Start Mode
Table 122: Parameter 1-70 Start Mode
1-70 Start Mode
Default value: [0] Rotor detection
Conversion index: –
Select the start-up mode. This is done to initialize the VVC
the speed and angle. Active for PM and SynRM motors in VVC
Option Name
[0]* Rotor detection
[1] Parking
[2] Rotor det. w/
parking
Parameter 1-71 Start Delay
Table 123: Parameter 1-71 Start Delay
1-71 Start Delay
Default value: 0 s
Conversion index: -1
This parameter refers to the start function selected in parameter 1-72 Start Function. Enter the time delay required before commenc-
ing acceleration.
Parameter 1-72 Start Function
Table 124: Parameter 1-72 Start Function
1-72 Start Function
Default value: [2] Coast/delay time
Conversion index: –
Select the start function during start delay. This parameter is linked to parameter 1-71 Start Delay.
Op- Name Description
tion
[0] DC hold/
Energize the motor with a DC hold current (parameter 2-00 DC Hold Current) during the start delay time.
delay time
[1] DC brake/
Energize the motor with a DC brake current (parameter 2-01 DC Brake Current) during the start delay
delay time time.
[2]* Coast/delay Motor coasted during the start delay time (inverter off).
time
[3] Start speed
Only possible with VVC
cw
eter 1-76 Start Current in the start delay time. Regardless of the value applied by the reference signal, the
output speed applies the setting of the start speed in parameter 1-74 Start Speed [RPM] or parameter 1-75
Start Speed [Hz], and the output current corresponds to the setting of the start current in parameter 1-76
Danfoss A/S © 2021.08
Parameter type: Option
Data type: Uint8
+
control core for previously free-running motor. Both selections estimate
Description
Estimates the electrical angle of the rotor and uses this as a starting point. Standard selection for
VLT® AutomationDrive applications.
The parking function applies DC current across the stator winding and rotates the rotor to electri-
cal 0 position (typically selected for HVAC applications). Parking current and time are configured in
parameter 2-06 Parking Current and parameter 2-07 Parking Time.
Parameter type: Range, 0 - 25.5 s
Data type: Uint8
Parameter type: Option
Data type: Uint8
+
. Connect the function described in parameter 1-74 Start Speed [RPM] and param-
Setup: All setups
Change during operation: True
+
only.
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Parameter Descriptions
AU373327181955en-000101 / 130R1208 | 83