Technical data
Synchronous servomotor 33Version: 2.1
10.2 AM812x
Electrical data Symbol
[Unit]
AM8121-F AM8121-F at
EL7201
AM8122-F AM8122-F at
EL7201
AM8122-J
Standstill torque M
0
[Nm] 0,5 0,35 0,8 0,56 0,8
Standstill current I
orms
[A] 4,0 2,8 4,0 2,8 8,0
Max. mech. speed N
max
[min
-1
] 12000 12000 12000 12000 12000
Max. mains voltage U
N
[V
DC
] 50 50 50 50 50
U
N
= 24 VDC Rated speed N
n
[min
-1
] 1000 1000 600 600 2000
Rated torque M
n
[Nm] 0,5 0,35 0,8 0,56 0,78
Rated power P
n
[W] 52 36 50 35 163
U
N
= 48 VDC Rated speed N
n
[min
-1
] 3000 3000 2000 2000 4500
Rated torque M
n
[Nm] 0,5 0,35 0,8 0,56 0,75
Rated power P
n
[W] 157 110 167 117 353
Peak current I
0max
[A] 17 5,66 22,4 5,66 48,0
Peak torque M
0max
[Nm] 1,97 0,69 4,06 1,09 4,06
Torque constant K
Trms
[Nm/A] 0,125 0,125 0,2 0,2 0,1
Voltage constant K
Erms
[mVmin] 8 8 13 13 6
Winding resistance R20 [Ω] 1,6 1,6 1,5 1,5 0,34
Winding inductance L [mH] 3 3 3,7 3,7 0,7
* reference flange aluminium 230 mm x 130 mm x 10 mm
Installation of a shaft seal ring leads to a reduction of the rated values.
Mechanical data Symbol [Unit] AM8121 AM8122
Rotor moment of inertia (without brake) J [kgcm
2
] 0,134 0,253
Rotor moment of inertia (with brake) J [kgcm
2
] 0,156 0,276
Number of contacts 6 6
Static friction torque M
R
[Nm] 0,002 0,004
Thermal time constant t
TH
[min] 10 13
Weight (without brake) G [kg] 1,00 1,30
Weight (with brake) G [kg] 1,10 1,60
Permitted radial force at shaft end F
R
[N] See 10.2.2
Permitted axial force F
A
[N]
Data for optional brake
Data Symbol [Unit] AM812x
Holding torque at 120 °C M
BR
[Nm] 0,8
Supply voltage U
BR
[V
DC
] 24 +6 -10 %
Electrical power P
BR
[W] 10
Current I
on
[A] 0,3
Release delay time t
BRH
[ms] 8
Application delay time t
BRL
[ms] 12
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