maxon motor
Operating Instructions
1-Q-EC Amplifier DEC 50/5
5.1.6 “AUX”
The “AUX” terminal can be used as input or output, depending on the switch
position.
The “AUX” terminal is only protected against overvoltage if switch
S1
is open.
Switch S1 closed
Function
Voltage output
Output voltage
+5 VDC ± 5 %
Internal resistance
220
Ω
Output current, designed for an exter-
nal potentiometer >=10 k
Ω
500
µ
A
Switch S1 opened
Function
Speed change
Input voltage range
0 ... +5 V
Input impedance
33 k
Ω
pull-up resistor at +5 V
Continuous
overvoltage
protection
-50 ... +50 V
Speed setting with potentiometer
Speed 1
Input open or
input voltage > 4.0 V
Speed setting with potentiometer
Speed 2
Set input to Gnd or
input voltage < 1.0 V
5.1.7 “Hall sensor 1”, “Hall sensor 2”, “Hall sensor 3”
Hall sensors are needed for detecting rotor position.
"Hall sensor" inputs are protected against overvoltage.
Input voltage range
0 ... +5 V
Input
impedance
15 k
Ω
pull-up resistor at +5 V
Voltage value “low”
max. 0.8 V
Voltage value “high”
min. 2.4 V
Continuous overvoltage protection
-50 ... +50 V
Suitable for Hall effect sensors IC using Schmitt trigger and open collector out-
put.
5.2 Outputs
5.2.1 “V
CC
Hall”
Powering the Hall sensors.
Output voltage
7 ... 12 VDC
Max. output current
30 mA (current limited)
October 2008 Edition / Doc.No. 544910-06 / subject to change
maxon motor control
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