6 Optional motor versions
Operating manual mzr-7240
18
Technical data subject to change without prior notice!
Last update: March 2019
6.1
Brushless DC-motor as mzr-7241
The micro annular gear pump mzr 7241 can be powered alternatively with a
brushless DC-motor. This has a smaller design and a wide speed range, which
include the entire speed range of micro annular gear pump covers and has an
increased life span compared to a DC-motor with brushes.
Performance parameters
Nominal voltage
17 V
Max. continuous torque
50 mNm
Power
40 W
No-load speed at 9 V
8000 rpm
Max. continuous current
3,57 mA
Terminal resistance, phase-phase
0,2
Ω
Terminal inductance, phase-phase
0,26 mH
Speed range
500 – 6.000 rpm
Number of pairs of poles
4 (= 8 Pole)
Ambient temperature
-10 … +50 °C (-14 … +122 °F)
Type of Hall effect sensor
digital
table 7
Technical data of the brushless DC-motor
Function motor cable
Description
wire colour
Phase
U
yellow
Phase
V
red
Phase
W
black
Function hall sensor
cable
Description
wire colour
Hall sensor
H1
blue
Hall sensor
H2
white
Hall sensor
H3
green
Voltage
+5 V
red
Mass
GND
black
table 8
Pin configuration of the motor
figure 10
Measurements of the micro annular gear pump mzr-7241 with fluid connection »M4« and brushless
DC-motor