maxon motor
12
maxon EC motor
EC 20 flat with integrated electronics
Operating Instructions
September 2010 Edition / document number 903155_PDF_E - 07 / subject to change
4.3 «Enable» and direction version «cw/ccw»
The output stage is activated with the speed set value input. The output
stage is activated if the speed set value is higher than 0.17 V. The «cw/ccw»
direction is determined with the direction pre-selection digital input.
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)
Continous 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 18: Direction wiring
The «cw» direction is activated by a voltage of more than 2.4 V. Speed is
dependent on the applied voltage at the speed set value input. If the direction
is changed during operation, the motor will run down to minimum speed and
then accelerates in requested direction.
Input Voltage range
Function
Comments
0 V … 0.8 V
Sense of rotation «ccw»
Motor turns direction «ccw»
2.4 V … 5.0 V
Sense of rotation «cw»
Motor turns direction «cw»
4.4 Monitor speed «Monitor n»
The actual speed of the motor shaft can be monitored at the speed monitor
output of the electronics. The actual speed is available as a digital signal
(high/low) and supplies 6 output pulses per mechanical revolution.
Pin allocation
Cable green
Output voltage range
0 or +5 V (based on GND)
Output resistance
4.1 k
W
Low level
max. 0.5 V
High level
max. 4.2 V
Duty cycle
50%
Continous overvoltage protection
-30 V ... +30 V
