Danfoss VLT Aqua Drive FC 202 Programming Manual page 150

Programming Guide | VLT® Aqua Drive FC 202
Table 24: Preset Reference Bit
(continued)
Preset ref. bit
Preset ref. 5
Preset ref. 6
Preset ref. 7
Table 25: Digital Inputs, Function Descriptions - 2
Option
[19] Freeze ref
[20] Freeze output
[21] Speed up
Table 26: Shut Down/Catch Up
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
150 | © 2024.06
2
1
1
1
Shut down
0
1
0
1
1
0
1
1
Function
Freezes the actual reference, which is now the point of en-
able/condition to be used for [21] Speed up and [22] Speed
down. If speed up/speed down is used, the speed change al-
ways follows ramp 2 (parameter 3-51 Ramp 2 Ramp Up Time
and parameter 3-52 Ramp 2 Ramp Down Time) in the range
0–parameter 3-03 Maximum Reference.
Freezes the actual motor frequency (Hz), which is now the point
of enable/condition to be used for [21] Speed up and [22] Speed
down. If speed up/speed down is used, the speed change al-
ways follows ramp 2 (parameter 3-51 Ramp 2 Ramp Up Time
and parameter 3-52 Ramp 2 Ramp Down Time) in the range
0–parameter 1-23 Motor Frequency.
NOTICE
When freeze output is active, the drive cannot be stopped
via a low [8] Start signal. Stop the drive via a terminal
programmed for [2] Coasting inverse or [3] Coast and
reset inverse.
Select [21] Speed up and [22] Speed down for digital control of
the up/down speed (motor potentiometer). Activate this func-
tion by selecting either [19] Freeze ref or [20] Freeze output.
When speed up/speed down is activated for less than 400 ms,
the resulting reference is increased/decreased by 0.1%. If speed
up/speed down is activated for more than 400 ms, the resulting
reference follows the setting in ramping up/down parameters 3-
x1/3-x2.
Catch up
0
0
1
1
Parameter Descriptions
0
1
0
1
AU361182657213en-002101 / 130R0338