Technical Documentation ECE10CM, DC10CM Page 23 of 39
4.4.8.2 Incremental Generator (ECE10CM-01)
If a permanently excited three-phase synchronous motor (ECE) with 3x120° offset
commutation sensors and additional incremental generator with more than 500 pulse/rev. is
connected, a control range of 1:500 can be achieved.
The power supply is controlled by evaluation of the rotor position by the commutation
sensors. Greater control accuracy is achieved by the speed actual value being fed back as
control value by means of incremental generator pulses.
Screened sensor cables must be used.
A (X4-2) Pulse track A
B (X4-3) Pulse track B
X
4
3
4
B
1
5
1
0
k
10K
+
1
5
V
drive control
incremental
generator
pulse track
A or B
10nk
10k
10k
internal circuit
Level Definition
HIGH = +3.5 ... 35 VDC
LOW = 0 ... +2 VDC or open
reference potential: GND
input resistance: Ri = 10kOhm
other levels available upon request
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