6
10
7
KEB COMBIVERT F5
Name: Basis
17.02.03
6
Section
Page
Date
©
KEB Antriebstechnik, 2002
All rights reserved
Chapter
Functional Description
Encoder Interface
6.10.4 Power Supply of
Encoder
Fig. 6.10.4 Power supply
X2A
X3A
X3B
+24VDC 0V
5,2V
U
var
+5,2V
0V
U
var
+5,2V
0V
21
22
0V
+20...30VDC
U
var
+5,2 V
U
var
is an unstabilized voltage that is provided by the power stage of the KEB
COMBIVERT. Dependent on the size of unit and the load, the voltage amounted to
15... 30 V DC. Uvar is loadable at X3A and X3B with altogether 170 mA. If higher
voltages / currents to supply the encoders are needed then the control must be supplied
with an external voltage.
The +5 V voltage is a stabilized voltage and loadable at X3A and X3B with altogether
500 mA. Since +5.2 V are generated from Uvar, the current from Uvar is reduced
according to following formula:
5,2 V x I
+5V
I
var
= 170 mA
-
ñ ó ó ó ó
U
var
Geberbetriebsart (Ec.20)
Ec.20 defines the function of the encoder interfaces.
Ec.20 Function
Bit 0 channel 2 function
0
Incremental encoder input
1
Incremental encoder output
Bit 1 terminating resistor at channel 2
0
input with terminating resistor
2
input without terminating resistor
Bit 2 channel 1 Incremental encoder alert (encoder cable breakage)
0
alert off
4
alert on (the encoder must support alert function)
Bit 3 channel 2 Incremental encoder alert (encoder cable breakage)
0
alert off
8
alert on (the encoder must support alert function)
