2.1 Ratings and Specifications
2.1.4 Specifications
2-10
*1.
The coefficient of speed fluctuation for load fluctuation is defined as follows:
*2.
Always perform risk assessment for the system and confirm that the safety requirements are met.
Operating
Methods
Program Table
Method
•
Program table positioning in which steps are executed sequentially by
commands given through contact input or serial communications
•
Positioning in which station numbers are specified by commands
given through contact input or serial communications
Max.
Number of
Steps
256
Max.
Number of
Tables
256
Max.
Number of
Stations
256
Serial
Communications
Method
Serial command by 1-channel ASCII code
Communications specifications: RS-422/485 (50 m max.)
Connection topology: Multi-drop connection
(16 axes max.)
Baud rate: 9600, 19200, 38400 bps
Other Functions
Registration (positioning by external signals), homing
Analog Monitor (CN5)
Number of points: 2
Output voltage range:
±
10 VDC (effective linearity range:
±
8 V)
Resolution: 16 bits
Accuracy:
±
20 mV (Typ)
Maximum output current:
±
10 mA
Settling time (
±
1%): 1.2 ms (Typ)
Dynamic Brake (DB)
Activated when a servo alarm or overtravel (OT) occurs, or when the
power supply to the main circuit or servo is OFF.
Regenerative Processing
Built-in (An external resistor must be connected to the SGD7S-470A to
-780A.)
Refer to the following manual for details.
Σ
-7-Series Peripheral Device Selection Manual (Manual No.: SIEP
S800001 32)
Overtravel (OT) Prevention
Stopping with dynamic brake, deceleration to a stop, or coasting to a
stop for the P-OT (Forward Drive Prohibit) or N-OT (Reverse Drive Pro-
hibit) signal
Protective Functions
Overcurrent, overvoltage, low voltage, overload, regeneration error, etc.
Utility Functions
Gain adjustment, alarm history, jog operation, origin search, etc.
Safety
Functions
Inputs
/HWBB1 and /HWBB2: Base block signals for Power Modules
Output
EDM1: Monitors the status of built-in safety circuit (fixed output).
Applicable
Standards
*2
ISO13849-1 PLe (Category 3), IEC61508 SIL3
Applicable Option Modules
Fully-Closed Module
Note: You cannot use a Safety Module if you are using an INDEXER Module.
Continued from previous page.
Item
Specification
×
100%
Coefficient of speed fluctuation =
No-load motor speed - Total-load motor speed
Rated motor speed