Base-Block Time (Uf.12) And Voltage Level (Uf.13) - KEB COMBIVERT F5 MULTI Applications Manual

Protective Functions
6.7.4 Dead Time
Compensation uF.18
6.7.5 Base-Block Time
(uF.12) and
Voltage Level
(uF.13)
6.7.6 Response to
Errors or Warning
Signals
Input selection
external fault (Pn.4)
With Pn.65 Bit 1 it can be
defined, whether with the
inputs selected here E.EF (with
response from Pn.3) or E.UP
(response from 6.7.3) is
triggered.
© KEB Antriebstechnik, 2002
All rights reserved
The dead time compensation optimizes the switch-off times of the power module
semiconductors. The parameter is intended for service purposes only and should not
be changed.
uF.18 Dead time compensation/Mode
0 off
1 on (default)
On switching off the modulation (e.g. on opening the control release or triggering the
DC-brake) the motor induces a voltage which acts contrary to its cause. The Base-
Block time (uF.12 in s) protects the power modules against destruction by blocking
the power modules in this stage. The duration of the Base-Block time depends on the
power stage. During the Base-Block time the display indicates „bbl". Below the indicated
Base-Block voltage level uF.13 no Base-Block time occurs. The current modulation
grade is indicated in ru.42.
The following errors or warning signals must not lead automatically to the disconnection
of the inverter. The behaviour can be adjusted by parameters:
Pn.4 Input selection external error
Pn.6 Watchdog time
At the following signals one can react to the interference additionally by setting a
switching condition:
Pn.9 Level OL-warning
Pn.11 Level OH-warning
Pn.13 Clearing time E.dOH
Motor protective circuit-breaker (6.7.8)
Pn.17 Level OHI-warning
In order to trigger an error in the inverter with an external signal, one or several inputs
can be selected for it with Pn.4.
Bit -No. Decimal value Input
0 1
1 2
2 4
3 8
4 16
5 32
6 64
7 128
8 256
9 512
10 1024
11 2048
In case of several inputs the sum of their decimal values must be entered.
Name: Basis
KEB COMBIVERT F5
Functional Description
=> Pn.3 Response to external fault
=> Pn.5 Response to error watchdog
=> Pn.7 Response to limit switch
=> Pn.18 Response to set-warning
=> Pn.66 Response to soft limit switch
=> Pn.8 Response to OL-warning
=> Pn.10 Response to OH-warning
=> Pn.12 Response to dOH-warning
=> Pn.14 Response to OH2-warning
=> Pn.16 Response to OHI-warning
ST (Prog. input „Control release/Reset")
RST (Prog. input „Reset")
F (Prog. input „Forward")
R (Prog. Input „Reverse")
I1 (Prog. Input 1)
I2 (Prog. Input 2)
I3 (Prog. input 3)
I4 (Prog. input 4)
IA (Internal input A)
IB (Internal input B)
IC (Internal input C)
ID (Internal input D)
Datum
04.05.04
Terminal
X2A.16
X2A.17
X2A.14
X2A.15
X2A.10
X2A.11
X2A.12
X2A.13
none
none
none
none
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