Siemens SINAMICS V90 User Manual

Appendix
A.2 Motor selection
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
423
A.2.2
Parameter description
Torque
● Summit torque: It refers to the maximum torque required by a motor in operation, which is
generally less than 80% of the motor’s maximum torque. When the torque is a negative
value, regenerative resistors may be needed.
● Moving torque and hold torque in standstill: It refers to the torque required by a motor in
long-term operation, which is generally less than 80% of the motor’s rated torque. When
the torque is a negative value, regenerative resistors may be needed.
Torque calculation methods of two major mechanism types:
W: Mass [kg]
P
b
: Ball screw lead [m]
F: External force [N]
η: Mechanical efficiency
μ: Friction coefficient
g: Gravitational acceleration 9.8 [m/s
2
]
W: Mass [kg]
P
d
: Belt transmission lead [m]
F: External force [N]
η: Mechanical efficiency
μ: Friction coefficient
g: Gravitational acceleration 9.8 [m/s
2
]
● Effective torque: It refers to the continuous effective load torque converted into the
equivalent value on the servo motor shaft, which is generally less than 80% of the motor’s
rated torque.
T
a
: Acceleration torque [N·m]
T
m
: Moving torque [N·m]
T
d
: Deceleration torque [N·m]
t
a
: Acceleration time [s]
t
u
: Constant motion time [s]
t
d
: Deceleration time [s]
t
c
: Cycle time [s]
Speed
Maximum speed: It refers to the motor's maximum speed in operation, which is generally
lower than the rated speed. When a motor operating at the maximum speed, pay attention to
its torque and temperature rise.

Siemens SINAMICS V90 Specifications

General

Power Range	0.05 kW to 7.0 kW
Protection Class	IP20
Communication	USS/Modbus RTU
Feedback	Incremental encoder
Input Voltage	1AC 200 V to 240 V, 3AC 380 V to 480 V
Control Modes	Position, Speed, Torque
Operating Temperature	0 °C to +40°C
Storage Temperature	-40°C to +70°C
Relative Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000 m above sea level