maxon motor control
11
maxon motor
Operating Instructions
1-Q-EC Amplifier DEC Module 24/2
April 2015 Edition / document number 1002422_PDF_E - 04 / subject to change
5.1.5 «Set current limit»
The «Set current limit» inputs is used for setting the contiunuous output cur-
rent limitation in the range of 0.5...3 A.
The current applied at the input «Set current limit» will stay available for an
indefinite period of time.
Note
Ö
The limiting value should be below the rated motor current (max. continu-
ous current) as shown on the motor data sheet (corresponds to line 6 in
maxon catalogue).
Set value current
Pin number [16] «Set current limit»
Referenced to Ground
Pin number [15] «Gnd»
To parameterize the preferred current limiting value, an external resistor (at
least 62.5 mW) between current limiting input «Set current limit» Pin [16] and
ground «Gnd» Pin [15] must be added.
Current limit value
Resistance value (E12 series)
3.0 A
input floating
2.5 A
47 k
Ω
2.0A
10 k
Ω
1.5 A
4.7 k
Ω
1.0 A
2.2 k
Ω
0.5 A
470
Ω
Note
Ö
Under unfavourable circumstances the actual motor peak current can not
be limited to the set current limit in all cases.
Unfavourable circumstances are given, if the current limit value is set
lower than 1.5 A, the supply voltage is higher than 15 V an the terminal
inductance is smaller than 0.3 mH at the same time.
5.1.6 «Hall sensor 1», «Hall sensor 2», «Hall sensor 3»
Hall sensors are needed for detecting rotor position and actual speed.
The Hall sensor inputs are protected against overvoltage.
Hall sensor 1
Pin number [7] «Hall sensor 1»
Hall sensor 2
Pin number [8] «Hall sensor 2»
Hall sensor 3
Pin number [9] «Hall sensor 3»
Input voltage range
0 ... +5 V
Input impedance
10 k
Ω
pull-up resistor to 5 V
Voltage level «low»
max. 0.8 V
Voltage level «high»
min. 2.4 V
Continuous over voltage protection
-28 ... +28 V
Suitable for Hall sensor IC‘s with Schmitt-Trigger behavior and open collector
outputs.
