Danfoss iC2 Application Manual page 228

Application Guide | iC2-Micro Frequency Converters
Selection number Selection name
17 Preset Ref. Bit 1
18 Preset Ref. Bit 2
19 Freeze Reference
20 Freeze Output
21 Speed Up
22 Speed Down
23 Set-up Select Bit 0
25 Start and Coast
28 Catch Up
29 Slow Down
34 Ramp Bit 0
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Selection description
Preset reference bits 0, 1, and 2 enable the selection of 1 of the 8
preset references. See Table 65.
Preset reference bits 0, 1, and 2 enable the selection of 1 of the 8
preset references. See Table 65.
Freeze the actual reference, which is now the point of enable/
condition for [21] Speed up and [22] Speed down to be used.
If [21] Speed up or [22] Speed down is used, the speed change
always follows ramp 2 (P 5.5.4.9 Ramp 2 Accel. Time and P
5.5.4.10 Ramp 2 Decel. Time) in the range 0–P 5.5.3.3 Maximum
Reference.
Freeze the actual motor frequency (Hz), which is now the point
of enable/condition for [21] Speed up and [22] Speed down to
be used. If [21] Speed up or [22] Speed down is used, the speed
change always follows ramp 2 (P 5.5.4.9 Ramp 2 Accel. Time and
P 5.5.4.10 Ramp 2 Decel. Time) in the range 0–P 4.2.2.4 Nominal
Frequency.
Note: When [20] Freeze output is active, the frequency converter
cannot be stopped by setting the signal on [8] Start to low.
Stop the frequency converter via a terminal programmed for [2]
Coasting inverse or [3] Coast and reset, inverse.
Select [21] Speed upand [22] Speed down if digital control of
the up/down speed is needed (motor potentiometer). Activate
this function by selecting either [19] Freeze reference or [20]
Freeze output. When speed up/down is activated for less than
400 ms, the resulting reference is increased/decreased by 0.1%. If
speed up/down is activated for more than 400 ms, the resulting
reference follows the setting in ramping up/down P 5.5.4.9 Ramp
2 Accel. Time/P 5.5.4.10 Ramp 2 Decel. Time. See
Select [21] Speed upand [22] Speed down if digital control of
the up/down speed is needed (motor potentiometer). Activate
this function by selecting either [19] Freeze reference or [20]
Freeze output. When speed up/down is activated for less than
400 ms, the resulting reference is increased/decreased by 0.1%. If
speed up/down is activated for more than 400 ms, the resulting
reference follows the setting in ramping up/down P 5.5.4.9 Ramp
2 Accel. Time/P 5.5.4.10 Ramp 2 Decel. Time. See
Select [23] Set-up select bit 0 to select 1 of the 2 set-ups. Set P
6.6.1 Active Set-up to [9] Multi Set-up.
Select [25] Start and Coast for a start command or coast stop.
Logic 1=start, logic 0=coast stop.
Increase reference value by percentage (relative) set in P 5.5.3.13
Freeze Up/Down Step Delta. See
Reduce reference value by percentage (relative) set in P 5.5.3.13
Freeze Up/Down Step Delta. See
Enable a selection from the 2 ramps available.
Table 66.
Table 66.
Table 66.
Table 66.
AB413939445838en-000301 / 130R1254