Robitronic
Pro-Master Manual
Operating Instructions
6
Preparing for a motor check
Connect Pro-Master to a 12-volt lead-acid battery with a capacity of at least 17Ah.
Do not use a
power supply
!
Place the test motor in the mount on the motor support unit. If, due to stickers, the motor is difficult
to place in the mount, the O-rings in the motor mount can be removed. Then attach the flywheel to
the motor armature with the hex key. The black/silver fields on the flywheel must be toward the
motor.
Connect the sensor cable of the motor support unit with the 7-pole plug to the front side of Pro-
Master.
Select Pro-Master's sensor check function to determine the correct position of the test motor in the
motor mount. The distance between the reflex sensor on the motor mount and the flywheel should be
2-4 mm. The sensor check should display a value of at most 30% for a silver field and at least 70%
for a black field.
Next solder the red/black motor cable to the test motor. We do not recommend a plug connection
because the motor's high starting current (up to 120 amperes) combined with the resistance of a plug
connector would cause a measurement error.
Connect the thin red/black measuring cable of the motor cable to the cable of the motor mount.
Next plug the motor cable into the socket marked "Output" on Pro-Master.
Check to assure that the flywheel has been firmly attached to the motor armature with the hex
(Allen) screws.
Check the tightness of the thumbscrew to fasten the test motor.
Then mount the safety cover over the flywheel, attaching the cover to the mounting block with the
thumbscrew.
To preclude the danger of injury by the rotating flywheel, the flywheel must be completely
covered by the safety cover.
