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Product description
3.2
Servo amplifiers
The PMCtendo SZ synchronous servo motors have to be operated with speed, torque or
position regulation using servo amplifiers, such as the PMCtendo DD5 or PMCprotego D.
The most important selection criteria for the appropriate servo amplifiers and associated ca-
bles are:
Stall torque M
}
Stall current I
}
Nominal speed n
}
Mass moments of inertia for the motor and load J [kgcm
}
Effective torque of the motor M
}
Regeneration energy in braking operation
}
Overload capacity
}
EMC
}
When selecting the servo amplifier, also keep static and dynamic loading in mind (accelera-
tion and braking).
3.3
Feedback
The PMCtendo SZ synchronous servo motors can be equipped with the following feedback
systems:
EnDat 2.2 single-turn, inductive (ECI 1118-G2)
}
EnDat 2.2 multi-turn, optical (EQN 1135)
}
HIPERFACE DSL multi-turn, optical (EKM36, only for SZ.3x – SZ.75...K)
}
Single-turn feedback systems deliver an absolute position within one revolution; multi-turn
feedback systems provide an absolute position over a number of revolutions.
The purely digital HIPERFACE DSL feedback system is a one cable solution, meaning it is
a hybrid cable where the power, brake and feedback wires are consolidated. The hybrid ca-
ble decreases wiring complexity and reduces space requirements. For assembly, it simply
has to be connected or clamped to the motor or servo amplifier.
3.4
Dynamics
The PMCtendo SZ synchronous servo motors are designed for applications with high dy-
namics by default. This means that they have the lowest possible mass moment of inertia.
Synchronous servo motors can optionally be delivered with increased mass moment of in-
ertia in order to optimize the inertia ratio between the motor and load.
3.5
Operating mode
PMCtendo SZ synchronous servo motors are designed for continuous operation. This cor-
responds to the S1 operating mode (in accordance with DIN EN 60 034-1).
Operating Manual PMCtendo SZ
1002405-EN-04
[Nm]
0
[A]
0
[rpm]
N
[Nm]
eff
]
2
13
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