KEB COMBIVERT F5-A, Applications Manual, Page: 274 / 552

Page 7.11 - 8 COMBIVERT F5-A, -E, -H © KEB, 2012-10
Speed measurement
7.11.4 Voltage supply of the encoder
Fig. 7.11.4 Voltage 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 V
Uvar is a non-stabilized voltage, which is made available from the power circuit of the KEB COMBIVERT. De-
pending on the unit size and the load it can be 15...30 V DC. Uvar can be loaded at X3A and X3B altogether with
max.170 mA. If higher currents are required for the supply of the incremental encoder, the FI must be supplied
with an external voltage.
The +5,2 V voltage is a stabilised voltage, which at X3A and X3B is loadable with altogether 500 mA. Since the
+5,2 V are generated from Uvar, the current from Uvar decreases in accordance with following formula:
5,2 V x I
+5V
–————
U
var
I
var
= 170 mA -