Jetter JHN Series, Installation Manual

Page: 22 / 44

22 Jetter AG
Mechanical installation
NOTICE
Avoiding damage to the servo motor and maintaining its service
life!
Improper installation may damage the motor or considerably shorten its
service life.

Make sure the clutch is aligned correctly. Please follow the
instructions given by the manufacturer of the clutch.
An offset will produce intolerable vibrations and will damage
ball bearings and clutch.

When using timing belts, observe the permissible radial forces F
R
.
Radial loads exceeding the limits will significantly reduce the
service life of motors.
If a belt drive is used, the minimum permitted diameter of the pinion,
for example, is calculated as follows:
d
min
≥ M
0
/F
R
x 2.

Avoid axial load of the motor shaft.
Axial load will significantly shorten the service life of the motor.
Make sure there is sufficient heat dissipation, especially at the flange side of
the motor. Derate the motor output, if necessary.
The rated data of the motor are reached, if the flange temperature does
not exceed 65 °C during operation.
Higher temperatures require a derating. For derating tables in case of
operating the motor at higher temperatures, please turn to the motor catalog of
Jetter AG.

Integrate the thermistor of the motor into the monitoring system of
the servo amplifiers.

Never operate the motors without incorporating and evaluating these
sensors. To this end, connect the thermal sensor of the encoder connector
for the motor with the corresponding input of the servo amplifier. For older
devices, appropriate thermal sensors must be used.
All torque data have been determined for motors equipped with cooling
plates.
For calculating the dimensions of a cooling plate with a thickness of 3.5 mm,
the following formula has been applied:
Length of cooling plate in mm = 2.5 x flange size in mm
Example for a JL2-0040-.... motor:
The motor flange size of 55 mm results in a cooling plate length of 2.5 x
55 mm = 137.5 mm.
Thus, the dimensions of the cooling plate are: 137.5 mm x 137.5 mm x
3.5 mm
Thermal sensor
Cooling plate