Migration Of Lenze Inverter Drives 8200/8400 - Lenze i55AE125B Manual

Additional functions
DC braking

Migration of Lenze Inverter Drives 8200/8400

11.4.3 Migration of Lenze Inverter Drives 8200/8400
The behaviour of the Lenze Inverter Drives 8200/8400 in case of automatic DC braking is dif-
ferent: In case of these inverters, after the auto DCB hold time has elapsed, the motor is dee-
nergised (by means of pulse inhibit) until the setpoint exceeds the auto DCB operating thresh-
old. In order to make a migration to the i500 inverter series easier, the setting
(P704.06) = "1" serves to activate the same behaviour in the i500.
The following example illustrates the behaviour of the function if
Parameter
0x2631:001 (P400.01)
0x2631:002 (P400.02)
0x2631:013 (P400.13)
0x2838:003 (P203.03)
0x2B84:001 (P704.01)
0x2B84:002 (P704.02)
0x2B84:003 (P704.03)
0x2B84:006 (P704.06)
Eingangssignale
Frequenz-Sollwertvorgabe
Trigger Funktion
Konstant TRUE [1] Inverter-Freigabe
Digitaleingang 1 [11] Starten
Digitaleingang 3 [13] Drehrichtung umkehren
Ausgangssignale
Ausgangsfrequenz
0x2DDD
Ausgangs-Trigger
In Betrieb [50]
Stopp aktiv [53]
DC-Bremsung aktiv [67]
The status signals can be assigned to digital outputs.
If the setpoint falls below the operating threshold set in
①
0x2B84:002 (P704.02).
After the hold time has elapsed, the power section is switched off.
②
If the setpoint exceeds the operating threshold again, the power section is switched on again. The motor is accelerated to the setpoint
③
again.
442
Designation
Enable inverter
Run
Reverse rotational direction
Stop method
Current
Automatic hold time
Automatic operating threshold
DC brake with inverter disable
60 Hz
50 Hz
40 Hz
30 Hz
20 Hz
10 Hz
0 Hz
60 Hz
50 Hz
40 Hz
30 Hz
20 Hz
10 Hz
0 Hz
-10 Hz
-20 Hz
-30 Hz
-40 Hz
-50 Hz
-60 Hz
Leistungsstufe eingeschaltet
4Configuration of digital outputs
0x2B84:003
0x2B84:006
0x2B84:006 (P704.06) = "1".
Setting for this example
Constant TRUE [1]
Digital input 1 [11]
Digital input 3 [13]
Standard ramp [1]
50 %
10 s
10 Hz
1
^ 603
(P704.03), the DC braking gets active for the hold time set in
t
t
t
t
t
t
t
t
t