Technical data

4
42
Manual – Gear Units and Gearmotors
Drive selection data
Project Planning for Drives
4.2 Drive selection data
Certain data is essential to specify the components for your drive precisely. These are:
Determining the
motor data
It is first necessary to have data on the machine to be driven (mass, speed, setting
range, etc.) to design the drive correctly.
These data help determine the required power, torque and speed. Refer to the "Drive
Engineering - Practical Implementation, Drive Planning" publication or the PTPilot proj-
ect planning software at www.ptpilot.com for assistance.
Selecting the
correct drive
The appropriate drive can be selected once the power and speed of the drive have been
calculated and with regard to other mechanical requirements.
Drive selection data Your entry
n
amin
Minimum output speed rpm
n
amax
Maximum output speed rpm
P
a
at n
amin
Output power at minimum output speed [HP]
P
a
at n
amax
Output power at maximum output speed [HP]
T
a
at n
amin
Output torque at minimum output speed [lb-in]
T
a
at n
amax
Output torque at maximum output speed [lb-in]
F
R
Overhung loads acting on the output shaft. Force
application in center of shaft end is assumed. If not,
please specify the exact application point giving the
application angle and direction of rotation of the shaft
for recalculation.
[lb]
F
A
Axial load (tension and compression) on the output
shaft
[lb]
J
Last
Mass moment of inertia to be driven [lb-ft
2
]
R, F, K, S, W
M1 - M6
Required gear unit type and mounting position
(→ Sec. Mounting positions, churning losses)
-
IP.. Required degree of protection -
ϑ
Umg
Ambient temperature [°F]
H Installation altitude
[ft. above
sea level]
S.., ..% cdf
Duty type and cyclic duration factor (cdf) or exact load
cycle can be entered.
-
Z
Starting frequency; alternatively, exact load cycle can
be specified
[1/h]
f
mains
Supply frequency [Hz]
U
Mot
,
U
Bremse
Operating voltage of motor and brake [V]
T
B
Required braking torque [lb-in]
For inverter operation:
Required control type and setting range