KEB COMBIVERT F5 Servo User Manual

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67 7
KEB COMBIVERT F5
Name: Basis
04.05.04
6
Abschnitt SeiteDatum
© KEB Antriebstechnik, 2002
All rights reserved
Kapitel
Functional DescriptionProtective Functions
XX
6.7.3 Automatic Restart
and Speed Search
Fig. 6.7.3.a Principle of speed search
Conditions at the start of speed search Function
≥ old setpoint secure
actual setpoint ≥ act. motor speed secure
< act. motor speed critical
actual rotation direction = old rotation direct. secure
≠ old rotation direct. critical
Speed Search / Mode Pn.27
The speed search mode determines the frequency and voltage jumps as well as the
maximum utilization with which the function works. Higher values let the function
work faster, lower values make the function „softer“.
With automatic restart the inverter can reset errors automatically. The function can
be activated in a separate manner according to error with the Pn-parameters.
Because of the independent starting of the machine safety measures must be
provided for operating personnel and machine.
The function speed search permits the connection of the frequency inverter onto a
running out motor. After the function has been activated by the selected starting
conditions (Pn.26), it searches for the actual motor speed and adapts the output
frequency and voltage accordingly. If the synchronization point is found the inverter
accelerates the drive with the adjusted ACC-ramp to the setpoint. In regulated operation
the ramp output value is set to the measured actual value.
Pn.0 Automatic restart UP
0 = off 1 = on
Pn.1 Automatic restart OP
0 = off 1 = on
Pn.2 Automatic restart OC
0 = off 1 = on
Terminal strip X2A
Power on
Terminal strip X2A
Pn.26 Starting conditions
1 Control release
2 Power on
4 Reset
8 Auto-Reset
Pn.27 Speed search mode (dep. ud.2)
Value Frequency lowering by
0 50 Hz/s / 375 rpm
1 70 Hz/s / 525 rpm
2 100 Hz/s / 750 rpm
3 150 Hz/s / 1125 rpm
4 200 Hz/s / 1500 rpm
5 280 Hz/s / 2100 rpm
6 400 Hz/s / 3000 rpm
7 560 Hz/s / 4200 rpm
Voltage rise by
0 0.025 %
8 0.12 %
16 0.24 %
24 0.485 %
Utilization level up to
080%
32 130 %
Search reference value
0 Set value
64 Measured actual value
Speed search
Add up the decimal values of the 3
blocks and enter it into Pn.27. (e.g.
100Hz/s = 2;
0.12 % = 8, 130 % = 32, setpoint = 0
Pn.27 = 2 + 8 + 32 + 0 = 42)
Pn.3, 5, 7, 8, 10, 12, 14, 16, 18, 66
at value „3“

KEB COMBIVERT F5 Servo Specifications

General

Brand	KEB
Model	COMBIVERT F5 Servo
Category	DC Drives
Language	English