BEHA UNITEST M-Indicator 9062, Instruction Manual

Page: 20 / 52

" Connect and position the UNITEST M-Indicator to
the motor ensuring that the longitudinalaxis of the
test instrument is in parallel to the longitudinal axis
of the motor.
"
Press button On (6). The green LED indicates that
the instrument is ready for testing.
If the LED R (3) is illuminated, a clockwise rotary field
is present (right-handed rotation). If the LED L (4) is
illuminated, a counter-clockwise rotary field is pres-
ent when looking onto the motor shaft.
Table 1 shows the minimum motor diameter with ref-
erence to the pole pair number to obtain a reliable test
result (sensor distance: 2.8 cm):(see page 24)
The contact-free rotary field determination isn´t
suitable about engines which are controled by
frequency converter´s.
Determination of the Rotary Field
20
Rechtslauf
R
right rotation