32
Elmark Automatyka S.A.
ul. Niemcewicza 76, 05-075 Warszawa, tel. (+48) 22 773 79 37; [email protected]; www.elmark.com.pl
NIP: 5252072585; KRS: 0000803828, Sąd Rejonowy dla M-St. Warszawy, XIV Wydział Gosp. KRS; Kapitał Zakładowy 525.000 zł, w pełni opłacony
P1.04
Startup frequency holding time
Default
0.0s
Setting Range
0.0s-100.0s
To ensure the motor torque at AC drive startup, set a proper startup frequency. In addition.to build excitation when the motor
starts up, the startup frequency must be held for a certain time.
The startup frequency (P1.03) is not restricted by the frequency lower limit. If the set target frequency is lower than the startup
frequency, the AC drive wilI not start and stays in the standby state. During switchover between forward rotation and reverse
rotation, the startup frequency holding time is disabled. The holding time is not included in the acceleration time but in the
running time of simple PLC.
Example 1:
P0.04=0 The frequency source is digital setting. P0.10=2.00Hz The digital setting frequency is 2.00 Hz. P1.03=5.00Hz The startup
frequency is 5.00 Hz.
P1.04=2.0s The startup frequency holding time is 2.0s.
In this example, the AC drive stays in the standby state and the output frequency is 0.00 Hz.
Example 2:
P0.04=0 The frequency source is digital setting. P0.10=10.00Hz The digital setting frequency is 10.00 Hz. P1.03=5.00Hz The startup
frequency is 5.00 Hz.
P1.04=2.0s The startup frequency holding time is 2.0s.
In this example, the AC drive accelerates to 5.00 Hz, and then accelerates to the set frequency 10.00 Hz after 2s.
P1.06
Startup DC braking time/
Pre-excited time
Default
0.0s
Setting Range
0.0~100.0s
P1.05
Startup DC braking current/ Pre-excited current
Default
0%
Setting Range
0%~100%
Startup DC braking is generally used during restart of the AC drive after the rotating motor stops. Pre-excitation is used to make
the AC drive build magnetic field for the asynchronous motor before startup to improve the responsiveness.
Startup DC braking is valid only for direct start. In this case, the AC drive performs DC braking at the set startup DC braking current.
After the startup DC braking time, the AC drive starts to run. If the startup DC braking time is 0, the AC drive starts directly without
DC braking. The larger the startup DC braking current is, the larger the braking force is.
If the startup mode is pre-excited start, the AC drive builds magnetic field based on the set pre-excited current. After the pre-
excited time, the AC drive starts to run. If the pre-excited time is 0, the AC drive starts directly without pre-excitation. The startup
DC braking current or pre-excited current is a percentage relative to the base Value.
If the rated motor current is less than or equal to 80% of the rated AC drive current, the base value is the rated motor current. If
the rated motor current is greater than 80% of the rated AC drive current, the base value is 80% of the rated AC drive current.
P1.07
Acceleration/ Deceleration mode
Default
0
Setting Range
0
Linear acceleration/deceleration
1
S-curve acceleration/deceleration A
2
S-curve acceleration/deceleration B
It is used to set the frequency change mode during the AC drive start and stop process.
0: Linear acceleration/deceleration
The output frequency increases or decreases in linear mode. The ED2000 provides four group of acceleration/deceleration time,
which can be selected by using P5.00 to P5.08.
1: S-curve acceleration/deceleration A
The output frequency is incremented or decremented according to the S curve. S curve requires gentle start or stop the use of
venues, such as elevators, conveyor belts and so on. Function Code P1.08 and P1.09, respectively, define the proportion of S-curve
acceleration and deceleration time of the initial segment and the end of the period.
Summary of Contents for elmatic ED2000
Page 1: ......
