maxon EC motor
11
maxon motor
Operating Instructions
EC 20 flat with integrated electronics
September 2010 Edition / document number 903155_PDF_E - 07 / subject to change
47k
15k
1µ
F
white
set value speed
12k
100k
grey
6’000
0
0
200
10.0
0.17 0.33
3’000
5
10.8
6’480
7’000
Speed
[rpm]
0
0
28
2’500
10
6’000
24
Enable
3’500
0
0
28
1’250
10
3’000
24
Operating voltage [V]
Speed
[rpm]
Operating voltage [V]
Speed
[rpm]
Operating voltage [V]
12k
100k
grey
Direction «cw/ccw»
Picture 16: Speed as function of specified set value voltage.
Option
By connecting (short-circuiting) the two wires speed monitor (green wire) and
set speed value (white wire), control is set into 2-wire operating mode. It has
to be connected before the supply voltage is switched on.
4.2 «Enable»
The power stage is activated with the digital input enable.
The input enable is protected against overvoltage.
Pin allocation
Cable grey
Input voltage range
0 ...+5.0 V (based on GND)
Input impedance
112 k
W
(range 0 ... +5.9 V)
12 k
W
(range 5.9 V... +30 V)
Continuous overvoltage protection
-30 V ... +30 V
47k
15k
1µ
F
white
set value speed
12k
100k
grey
6’000
0
0
200
10.0
0.17 0.33
3’000
5
10.8
6’480
7’000
Speed
[rpm]
0
0
28
2’500
10
6’000
24
Enable
3’500
0
0
28
1’250
10
3’000
24
Operating voltage [V]
Speed
[rpm]
Operating voltage [V]
Speed
[rpm]
Operating voltage [V]
12k
100k
grey
Direction «cw/ccw»
Picture 17: Enable wiring.
The power stage is activated by a voltage of more than 2.4 V. Speed is de-
pendent on the connected voltage at the set value speed input. The power
stage is switched off by a voltage of less than 0.8 V, the motor gradually slows
down, irrespective of the connected voltage at the set value speed input.
Input voltage range
Function
Comments
0 V … 0.8 V
«Disable»
Power stage switched off
2.4 V … 5.0 V
«Enable»
Power stage switched on if set value
higher than 0.17 V.
