Power Supply Of Encoder - KEB COMBIVERT F5 MULTI Applications Manual

Encoder Interface
Geberbetriebsart (Ec.20)
6.10.4 Power Supply of
Encoder
© KEB Antriebstechnik, 2002
All rights reserved
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)
Fig. 6.10.4 Power supply
+20...30VDC
U
U is an unstabilized voltage that is provided by the power stage of the KEB
var
var
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
+5,2 V
500 mA. Since +5.2 V are generated from Uvar, the current from Uvar is reduced
according to following formula:
I = 170 mA
var
Name: Basis
KEB COMBIVERT F5
Functional Description
X2A
0V 22
21
+24VDC 0V
5,2 V x I
- ñ ó ó ó ó
+5V
U
var
X3A
U
var
+5,2V
5,2V
0V
X3B
U
var
+5,2V
0V
Date Chapter Section
10
6
17.02.03
6
Page
7