6 2
KEB COMBIVERT F4-C
4
Name: Basis
Chapter Section
Page Date
© KEB Antriebstechnik, 1997
All Rights reserved
27.01.98
Functional Description Analog In- and Outputs
X1.8
REF+
X1.9
REF-
+-
X1.18
AGND
X1.8
REF+
X1.9
REF-
+-
X1.8
REF+
X1.9
REF-
X1.16
CRF
X1.18
AGND
Ri = 56k
ΩΩ
ΩΩ
Ω
Ri = 40k
ΩΩ
ΩΩ
Ω
X1.18
AGND
+-
X1.17
REF
X1.18
AGND
+-
X1.17
REF
X1.17
REF
X1.16
CRF
X1.18
AGND
X1.18
AGND
+-
X1.17
REF
0...10V DC
Ri=56kΩ
(An.6=0)
0...20mA DC
Ri=250Ω
(An.6=1)
4...20mA DC
Ri=250Ω
(An.6=2)
Ri = 24k
ΩΩ
ΩΩ
Ω
6.2.2 Input Signals
(An.6)
Differential Voltage Input:
(±REF)
Terminal X1.8 and X1.9
Resolution ±10 Bit
Multifunction Input:
(REF)
Terminal X1.17
Resolution 10 Bit
Voltage
Current
Picture 6.2.2.a Differential voltage input 0...±10V DC
Max load of output
CRF Kl. X1.16 6mA
Optional Analog Input
6.2.3 Noise Filter
(An.1, An.7,
An.26)
Internally the input signals are given in percentual values. The differential voltage
input (±REF) supplies internal a percentual value ±100%. According to the selected
input signal (0...10V; 0...20mA; 4...20mA) the multifunction input supplies a value
between 0...100%.
The noise filter shall suppress disturbances and ripples from the input signals.When
the noise filter is switched off, the analog inputs are scanned all 4ms and this actual
value is transmitted. With the noise filter it is adjustable that the inputs are tested 2-,
4-, 8- or 16-times. From this value an average value is built which is transmitted
afterwards.
An.1, An.7, An.26 Function
0 No average value generation (updating time 4 ms)
1 Average value generation from 2 values (updating time 8 ms)
2 Average value generation from 4 values (updating time 16 ms)
3 Average value generation from 8 values (updating time 32 ms)
4 Average value generation from 16 values (updating time 64 ms)
Picture 6.2.2.b Multifunction input 0...10V, 0...20mA, 4...20mA
The opitional analog input is not put on the terminal strip. It is used internally with
additional cards (for example the encoder interface)
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