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AM8551-wJyz | Servomotor with increased moment of inertia 6.30 Nm (M0), F5 (104 mm)

Servomotor with fan, OCT

Servomotor with fan, OCT

Servomotor with fan, OCT

Servomotor with fan, OCT

Servomotor with fan, OCT, rear view

Servomotor with fan, OCT, rear view

Servomotor with fan, resolver

Servomotor with fan, resolver

Servomotor with fan, resolver, rear view

Servomotor with fan, resolver, rear view

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 100…480 V AC voltage range. The standstill torque of the motor depends on the winding and is in the range of 4.80…6.30 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.

Product status:

regular delivery

Product variantsHigh-performance type with forced coolingStandstill torqueStandstill currentRated speed
AM8551-wEyz4.80 Nm2.70 A2500 min-1
AM8551-wGyz4.90 Nm4.75 A5000 min-1
AM8551-wKyz4.90 Nm8.50 A8000 min-1
AM8551-wFyzyes6.20 Nm3.50 A2500 min-1
AM8551-wJyzyes6.30 Nm5.80 A4750 min-1
AM8551-wLyzyes6.30 Nm11.1 A8000 min-1

Product information

Data for 400 V ACAM8551-wJyz
Motor typepermanent magnet-excited three-phase synchronous motor
Nominal voltage100…480 V AC
Standstill torque6.30 Nm
Rated torque5.5 Nm
Peak torque17.8 Nm
Rated speed4750 min-1
Rated power2.74 kW
Standstill current5.80 A
Peak current20.9 A
Torque constant1.02 Nm/A
Rotor moment of inertia8.75 kgcm²
Motor feedbackresolver, single-turn absolute encoder
OCT, 18 bit, single-turn or multi-turn absolute encoder, electronic nameplate
OCT, 24 bit, SIL 2-capable, single-turn or multi-turn absolute encoder, electronic nameplate
OCT, 24 bit, SIL 2-capable, single-turn or multi-turn absolute encoder, electronic nameplate, B/SSD
OCT, EnDat® 3, 19 bit, SIL 3-capable, single-turn or multi-turn absolute encoder, electronic nameplate
Coolingexternal axial ventilation
Connection technologyM23 speedtec® plug
Ambient temperature (operation)+5…+40°C
Approvals/markingsCE, cURus, EAC

All electric quantities are RMS values.

Housing dataAM80xx forced cooling
Protection ratingselectable IP20, IP65
Design formflange-mounted according to IM B5, IM V1, IM V3
Materialaluminum
Coating/surfacedark gray powder coating, similar to RAL7016
DimensionsAM8551-wJyz
a95 j6
b24 k6
d50 mm
l115 mm
r104 mm
k (without brake)252.5 mm
k (with brake)285.5 mm
  • Standstill point
  • Nominal point @ 230 V AC
  • Nominal point @ 400 V AC
  • Nominal point @ 480 V AC
  • S1 curve @ 230 V AC
  • S1 curve @ 400 V AC
  • S1 curve @ 480 V AC
  • Voltage boundary curve @ 230 V AC
  • Voltage boundary curve @ 400 V AC
  • Voltage boundary curve @ 480 V AC
Order reference
AM8551-wJyz
w = 0smooth shaft
w = 1shaft with groove and feather key according to DIN 6885
w = 2smooth shaft with IP65 sealing ring
w = 3shaft with IP65 sealing ring and with groove and feather key
w = 4shaft with IP65 sealing ring, smooth shaft and sealing air connection (not for AM801x)
w = 5shaft with IP65 sealing ring, shaft with groove and feather key and sealing air connection (not for AM801x)
y = 02-cable standard: feedback resolver
y = 1One Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic nameplate, single-turn, absolute position within one revolution, 18 bit resolution
y = 2One Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic nameplate, multi-turn, absolute position within 4096 revolutions, 18 bit resolution
y = GOne Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic nameplate, single-turn, absolute position within one revolution, resolution 24 bit, SIL 2-capable (mandatory for TwinSAFE Safe Motion functions at AX8xxx-x2xx)
y = HOne Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic nameplate, multi-turn, absolute position within 4096 revolutions, resolution 24 bit, SIL 2-capable (mandatory for TwinSAFE Safe Motion functions at AX8xxx-x2xx)
y = IEnDat® 3; One Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic nameplate, single-turn, absolute position within one revolution, resolution 19 bit, SIL 3-capable (mandatory for TwinSAFE Safe Motion functions at AX8xxx-x2xx), only for AM802x to AM807x at AX8000 from firmware 1.06
y = JEnDat® 3; One Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic nameplate, multi-turn, absolute position within 4096 revolutions, resolution 19 bit, SIL 3-capable (mandatory for TwinSAFE Safe Motion functions at AX8xxx-x2xx), only for AM802x to AM807x at AX8000 from firmware 1.06
y = LOne Cable Technology for power and feedback: feedback transmission via motor cable, no feedback cable necessary, electronic nameplate, multi-turn, absolute position within 4096 revolutions, resolution 24 bit, SIL 2-capable (mandatory for TwinSAFE Safe Motion functions at AX8xxx-x2xx), Beckhoff Smart System Diagnosis (B/SSD)
z = Aforced cooling IP20, without holding brake, for AM805x, AM806x, AM807x, AM855x, AM856x(1)
z = Bforced cooling IP20, with backlash-free permanent magnet holding brake, for AM805x, AM806x, AM807x, AM855x, AM856x
z = Cforced cooling IP65, without holding brake, for AM805x, AM806x, AM807x, AM855x, AM856x(2)
z = Dforced cooling IP65, with backlash-free permanent magnet holding brake for AM805x, AM806x, AM807x, AM855x, AM856x
AM855x-wxyz-9000: flange and shaft compatible with AM355x-wxyz-000a
The options cannot be installed in the field.

(1) The EL2022 or KL2022 digital output terminal with matching ZK4054-6400-xxxx supply cable is recommended for controlling the 24 V DC IP20 ventilation.

(2) The PS1111-2402-0002 power supply with matching ZK4054-6400-0xxx supply cable is recommended for controlling the 24 V DC IP65 ventilation.

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