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General
Listof abbreviations
[°]Angle of action of radial force M
B [Nm]Braking torque of brake [%]Mechanical efficiency M
stall [Nm]Stall torque of motor
A [%]Mechanical start-up efficiency ofgearbox M
L [Nm]Load torque M
r [Nm]Rated torque
c=1 [%]Gearbox efficiency with c=1 M
V [Nm]Deceleration torque
G [%]Gearbox efficiency -Ratio step n
1 [rpm]Inputspeed n
2 [rpm]Outputspeed AC -Alternating current/voltage n
L [rpm]Load speed
1
n
r [rpm]Rated speed c -Load capacity of geared motors cos -Power factor of motor OT [min]Operating time DC -Directcurrent/voltage P
1 [kW]Inputpower d
w [mm]Effective diameter of transmission element P
1 perm [kW]Permissible inputpower P
B 20Ëš [W]Power of brake coil at20ËšC P
req [kW]Required inputpower f -Effective direction factor atoutputshaft P
r [kW]Rated power F
a [N]Applied axial force F
a Tab [N]Table value of axial force Q [J]Friction energy per switching cycle F
a perm [N]Permissible axial force Q
BW [J]Friction energy of brake until readjustment f
r [Hz]Rated frequency F
r [N]Applied radial force Q
E [J]Maximum permissible braking energy forone-time switching operation F
r Tab [N]Table value of radial force F
r perm [N]Permissible radial force Q
perm [J]Permissible friction energy per switchingcycle f
w -Load application factor atoutputshaft f
z -Additional radial force factor of transmission element S
B -Brake safety factor S
h [h
-1 ]Operating frequency h [m]Site altitude amsl S
h, perm [h
-1 ]Permissible operating frequency S
hü [h
-1 ]Transition operating frequency i -Ratio I
A [A]Motor starting current t
11 [ms]Delay time on engagement I
B [A]Rated brake current t
3 [ms]Slipping time I
r [A]Rated current t
B [ms]Braking time T
amb [ËšC]Ambienttemperature J
D [kgm
2 ]Momentof inertia of the drive reduced onthe inputshaft U
r [V]Rated voltage J
B [kgm
2 ]Momentof inertia of the brake U
mains [V]Mains voltage J
G [kgm
2 ]Momentof inertia of the gearbox reducedon the inputshaft Z
a -Number of switching operations until readjustment J
L [kgm
2 ]Momentof inertia of the load J
LD [kgm
2 ]Momentof inertia of the load reduced onthe inputshaft CCC Certificate for China compulsory productcertification J
M [kgm
2 ]Momentof inertia of the motor J
Z [kgm
2 ]Additional momentof inertia CE Communauté Européene CSA Canadian Standards Association k -Application factor (according toDIN 3990) DIN Deutsches Institutfür Normung EMC Electromagnetic compatibility k
h -Power correction factor of site altitude EN European standard k
l -Intensity of gearbox load capacity IEC International Electrotechnical Commission k
L -Power correction factor of operating mode IM International Mounting Code k
Tamb -Power correction factor ambienttemperature IP International protection code NEMA National Electrical Manufacturers Association m [kg]Mass UL Underwriters Laboratory listed component M
1 [Nm]Inputtorque UR Underwriters Laboratory recognisedcomponent M
2 [Nm]Outputtorque M
2 perm [Nm]Permissible outputtorque USDA United States Departmentof Agriculture M
A [Nm]Motor starting torque VDE Verband deutscher Elektrotechniker
G-motion consten 7/2006 1-5