2.1 General Specifications
2.1.2
Σ
-7C
2-5
2
S
electing a
S
ER
VOP
ACK
2.1.2
Σ
-7C
This section gives the general specifications of
Σ
-7C SERVOPACKs and the specifications of
the Servo Section. Refer to the following manual for the specifications of the Controller Section.
Σ
-7-Series
Σ
-7C SERVOPACK Product Manual (Manual No.: SIEP S800002 04)
General Specifications
Servo Section Specifications
Item
Specification
Control Method
IGBT-based PWM control, sine wave current drive
Feedback
With Rotary Servo-
motor
Serial encoder: 17 bits (absolute encoder)
20 bits or 24 bits
(incremental encoder/absolute encoder)
22 bits (absolute encoder)
With Linear Servomo-
tor
•
Absolute linear encoder (The signal resolution depends on the abso-
lute linear encoder.)
•
Incremental linear encoder (The signal resolution depends on the
incremental linear encoder or Serial Converter Unit.)
Environ-
mental
Conditions
Surrounding Air Tem-
perature
0
°
C to 55
°
C
Storage Temperature
-20
°
C to 85
°
C
Surrounding Air
Humidity
10% to 95% relative humidity (with no freezing or condensation)
Storage Humidity
10% to 95% relative humidity (with no freezing or condensation)
Vibration Resistance
4.9 m/s
2
Shock Resistance
19.6 m/s
2
Protection Class
IP20
Pollution Degree
2
•
Must be no corrosive or flammable gases.
•
Must be no exposure to water, oil, or chemicals.
•
Must be no excessive dust, salts, or iron dust.
Altitude
1,000 m max.
Note: With derating, usage is possible between 1,000 m and 2,000 m. Refer to
the following manual for derating specifications.
Σ
-7-Series
Σ
-7C SERVOPACK Product Manual (Manual No.: SIEP
S800002 04)
Power Frequency
Magnetic Field
30 A/m (50 Hz/60 Hz), IEC 61000-4-8, Level 4
Others
Must be no exposure to electrostatic noise or radiation.
Applicable Standards
Refer to the following section for details.
Compliance with UL Standards, EU Directives, and Other Safety Stan-
Mounting
Base-mounted
Note: Rack-mounted SERVOPACKs are not available.
Item
Specification
Perfor-
mance
Speed Control Range
1:5000 (At the rated torque, the lower limit of the speed control range
must not cause the Servomotor to stop.)
Coefficient of Speed
Fluctuation
*1
±
0.01% of rated speed max. (for a load fluctuation of 0% to 100%)
0% of rated speed max. (for a voltage fluctuation of
±
10%)
±0.1% of rated speed max. (for a temperature fluctuation of 25°C
±25°C)
Torque Control Preci-
sion (Repeatability)
±
1%
Soft Start Time Set-
ting
0 s to 10 s (Can be set separately for acceleration and deceleration.)
Continued on next page.