AM855x
 
AM8551 Servomotor with increased moment of inertia 4.9 Nm (M0), F5 (104 mm)

AM8551 | Servomotor with increased moment of inertia 4.9 Nm (M0), F5 (104 mm)

The AM8551 high-inertia servomotor is suitable for drive solutions with increased moment of inertia to ensure synchronism and optimal ratio of load/motor inertia in the 400…480 V AC voltage range. The standstill torque of the motor depends on the winding and is in the range of 1.5…5 Nm. It is available with the OCT feedback system (absolute encoder). The high-inertia servomotor with flange code F5 (104 mm) and motor length 1 has a shaft diameter b = 24 k6 and a free shaft end of d = 50 mm.

Data for 400 V AC AM8551-wEyz AM8551-wGyz AM8551-wKyz
Motor type permanent magnet-excited three-phase synchronous motor
Standstill torque 4.80 Nm 4.90 Nm 4.90 Nm
Rated torque 4.60 Nm 4.40 Nm 3.90 Nm
Cooling convection
Rated speed 2500 min-1 5000 min-1 8000 min-1
Rated power 1.20 kW 2.30 kW 3.27 kW
Peak torque 17.2 Nm
Standstill current 2.70 A 4.75 A 8.50 A
Peak current 12.1 A 20.9 A 37.7 A
Torque constant 1.77 Nm/A 1.02 Nm/A 0.57 Nm/A
Voltage constant 125 mV/min-1 73 mV/min-1 40 mV/min-1
Number of poles 8
Rotor moment of inertia 8.75 kgcm²
Weight 5.5 kg
Holding torque brake (Mbr) 9 Nm
Power consumption (brake) at 24 V DC (Pbr) 18 W
Rotor moment of inertia incl. brake (J) 9.41 kgcm²
Weight incl. brake (m) 6.1 kg
Connection technology M23 speedtec® plug
One Cable Technology (OCT) yes
Approvals CE, UL
Data for 400 V AC AM8551-wFyz AM8551-wJyz AM8551-wLyz
Motor type permanent magnet-excited three-phase synchronous motor
Standstill torque 6.20 Nm 6.30 Nm 6.30 Nm
Rated torque 5.8 Nm 5.5 Nm 3.6 Nm
Cooling external axial ventilation*
Rated speed 2500 min-1 4750 min-1 8000 min-1
Rated power 1.52 kW 2.74 kW 3.02 kW
Peak torque 17.7 Nm 17.8 Nm 17.8 Nm
Standstill current 3.50 A 5.80 A 11.1 A
Peak current 12.1 A 20.9 A 37.7 A
Torque constant 1.77 Nm/A 1.02 Nm/A 0.57 Nm/A
Voltage constant 128 mV/min-1 73 mV/min-1 40 mV/min-1
Number of poles 8
Rotor moment of inertia 8.75 kgcm²
Weight 6.6 kg
Holding torque brake (Mbr) 9 Nm
Power consumption (brake) at 24 V DC (Pbr) 18 W
Rotor moment of inertia incl. brake (J) 9.40 kgcm²
Weight incl. brake (m) 7.2 kg
Connection technology M23 speedtec® plug
One Cable Technology (OCT) yes
Approvals CE, UL

*Thanks to the external axial ventilation the servomotor series offer high torques in the forced cooling version even at high speeds. Please see here for an overview.

Order reference
AM85uv-wxyz
u flange code F
v motor length
w = 0 smooth shaft
w = 1 shaft with groove and feather key according to DIN 6885
w = 2 smooth shaft with IP 65 sealing ring
w = 3 shaft with IP 65 sealing ring and shaft with groove and feather key
x winding code A…Z
y = 0 2-cable standard: feedback resolver
y = 1 One Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic identification plate, single-turn, absolute position within one revolution, 18 bit resolution
y = 2 One Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic identification plate, multi-turn, absolute position within 4096 revolutions, 18 bit resolution
y = A One Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic identification plate, single-turn, absolute position within one revolution, resolution 23 bit
y = B One Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic identification plate, multi-turn, absolute position within 4096 revolutions, resolution 23 bit
y = N without feedback (sensorless)
z = 0 without holding brake
z = 1 with holding brake (not available for AM8533, AM8543, AM8553 and AM8563)
z = A forced cooling, without holding brake, for AM855x, AM856x (1)
z = B forced cooling, with holding brake, for AM855x, AM856x (not available for AM8553 and AM8563) (1)
(1) The EL2022 or KL2022 digital output terminal with matching ZK4054-6400-xxxx supply cable is recommended for controlling the external 24 V DC ventilation.
All electric quantities are RMS values.
The options cannot be installed in the field.
Accessories  
AG2300 High-end gear series for servomotors AM8000 and AM8500
AG2400 High-end planetary gear units with output flange
AG3210 Economy planetary gear units
AG3300 Economy planetary gear units
AG3400 Economy planetary gear units with output flange
ZK45xx-8xxx Supply cables AM8000, AM8500, AM8800