Lenze I51AE175F User Manual

7.5 Frequency limits and ramp mes
The frequency range can be limited by seng a minimum and maximum frequency. For the
frequency setpoint, two dierent ramps can be parameterised. Change-over to ramp 2 can be
carried out manually or automacally.
Details
The frequency setpoint is internally led via a ramp generator.
•
The acceleraon me set in 0x2917 (P220.00) refers to an acceleraon from standsll to
the maximum frequency set in 0x2916 (P211.00). At a low setpoint selecon, the real
acceleraon me decreases accordingly.
•
The deceleraon me set in 0x2918 (P221.00) refers to the deceleraon of the set maxi-
mum frequency to standsll. In case of a lower actual frequency, the actual deceleraon
me is reduced accordingly.
0 Hz
30 Hz
10 Hz
20 Hz
40 Hz
50 Hz
60 Hz
t
0 Hz
30 Hz
10 Hz
20 Hz
40 Hz
50 Hz
60 Hz
t
0x2918
0x2916
0x2917
0x2DDD
Output signals
Output frequency
Input signals
Frequency setpoint selection
Automac/manual change-over to ramp 2
•
For ramp 2, the acceleraon me 2 set in 0x2919 (P222.00) and the deceleraon me 2
set in 0x291A (P223.00) apply.
•
The change-over to ramp 2 is eected automacally if the frequency setpoint (absolute
value) ≥ auto-changeover threshold 0x291B (P224.00).
0 Hz
30 Hz
10 Hz
20 Hz
40 Hz
50 Hz
60 Hz
t
0 Hz
30 Hz
10 Hz
20 Hz
40 Hz
50 Hz
60 Hz
t
0x2919
0x2917
0x291A
0x2918
0x291B = 20 Hz
0x2DDD
Ramp 2 active
Ramp 1 active
Output signals
Output frequency
Input signals
Frequency setpoint selection
•
The "Acvate ramp 2" funcon serves to manually acvate the acceleraon me 2 and the
deceleraon me 2. 4Acvang ramp 2 manually ^ 390
Parameter Name / value range / [default seng] Info
0x2915
(P210.00)
Minimum frequency
(Min. frequency)
0.0 ... [0.0] ... 599.0 Hz
Lower limit value for all frequency setpoints.
0x2916
(P211.00)
Maximum frequency
(Max. frequency)
Device for 50-Hz mains: 0.0 ... [50.0] ... 599.0 Hz
Device for 60-Hz mains: 0.0 ... [60.0] ... 599.0 Hz
Upper limit value for all frequency setpoints.
Basic seng
Frequency limits and ramp mes
106

Lenze I51AE175F Specifications

General

Brand	Lenze
Model	I51AE175F
Category	Inverter
Language	English