Factory Automation

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RD78G8

Performance specifications

[Control specifications] Simple Motion mode
Number of control axes
Operation cycle (operation cycle settings)*1
Interpolation function
Control method
Acceleration/deceleration processing
Compensation function
Synchronous control
Control unit
Positioning control method
Number of positioning data
Backup
Home position return
Positioning control
Manual control
Speed-torque control
Absolute position system
Synchronous encoder operation function
Speed limit
Torque limit function
Forced stop
Software stroke limit function
Hardware stroke limit function
Speed change
Acceleration/deceleration processing change
Torque change function
Torque limit value change
Target position change function
Override
Event history function
Amplifier-less operation function
M-code output function
Step function
Skip function
Parameter initialization function
External input signal setting function
Teaching function
Mark detection function  
Mark detection signal
Mark detection setting
Optional data monitor function
Functional safety
Driver communication function
Inter-module synchronization
CC-Link IE TSN safety communication function
Digital oscilloscope function
Automatic return
Number of slots occupied
5 V DC internal current consumption [A]
Servo amplifier connection method
CC-Link IE TSN Class
Number of occupied I/O points
Maximum distance between stations [m]
PERIPHERAL I/F
Extended memory
Mass [kg]
Exterior dimensions [mm]
[Control specifications] PLCopen® Motion Control FB Mode
Number of control axes
Operation cycle (operation cycle settings)*1
Interpolation function
Control method
Acceleration/deceleration processing
Compensation function
Synchronous control
Control unit
Programming language
Backup
Home position return
Positioning control
Manual control
Direct control Speed control
Torque control
Absolute position system
Speed limit
Torque limit function
Forced stop
Software stroke limit function
Hardware stroke limit function
Speed change
Acceleration/deceleration processing change
Torque change function
Torque limit value change
Target position change function
Override
Event history function
Logging
Axis emulate (amplifier-less operation)
Touch probe (mark detection)
Monitoring of servo data
Servo system recorder function
CC-Link IE TSN safety communication function
Inter-module synchronization
Number of module occupied slots
5 V DC internal current consumption [A]
Servo amplifier connection method
CC-Link IE TSN Class
Number of occupied I/O points
Maximum distance between stations [m]
PERIPHERAL I/F
Extended memory
Memory capacity Built-in memory
SD memory card
Mass [kg]
Exterior dimensions [mm]
 
Up to 8 axes
250 μs, 500 μs, 1000 μs, 2000 μs, 4000 μs
Linear interpolation (up to 4 axes), 2-axis circular interpolation, helical interpolation (3 axes)
Positioning control, continuous path control, speed control, speed-torque control, synchronous control, continuous operation to torque control
Trapezoidal acceleration/deceleration, S-curve acceleration/deceleration
Backlash compensation, electronic gear, near pass function
Synchronous encoder input, command generation axis, cam, phase compensation, cam auto-generation
mm, inch, degree, pulse
Motion profile table
600 data (positioning data No. 1 to 600)/axis
(Can be set with MELSOFT GX Works3 or a sequence program.)
Parameters, positioning data, and block start data can be saved on flash ROM (batteryless backup)
Driver home position return*2
Linear interpolation control (up to 4 axes)*3, fixed-pitch feed control (up to 4 axes), 2-axis circular interpolation (auxiliary point-specified, central point-specified), helical interpolation, speed control (up to 4 axes), speed-position switching control (INC mode, ABS mode), position-speed switching control (INC mode), current value change
JOG operation, inching operation, manual pulse generator operation (up to 1 module)
Speed control not including position loop, torque control, continuous operation to torque control
Provided (batteryless)
Up to the number of axes of the connected servo amplifiers (via a servo amplifier or a CPU*4)
Speed limit value, JOG speed limit value
Torque limit value same setting, torque limit value individual setting
Valid/invalid setting
Movable range check with feed current value or with machine feed value
Provided
Provided
Acceleration/deceleration time
Provided
Provided
Speed to a target position address and a target position is changeable.
0 to 300 %
Provided
Provided
Provided
Deceleration unit step, data No. unit step
Via a PLC CPU or an external command signal
Provided
Via a CPU (buffer memory) or a servo amplifier
Provided
Continuous detection mode, specified number of detections mode, ring buffer mode
Signals for the number of axes of the connected servo amplifiers
16 settings
Up to 4 points/axis
Safety communication (network connection), DI/O connection of the servo amplifier
Provided*5
Provided
Provided
Bit data: 16 channels, word data: 16 channels*6
Provided
1
1.93
CC-Link IE TSN
B
32 points (I/O allocation: intelligent function module 32 points)
CC-Link IE TSN: 100
Via a CPU module (USB, Ethernet)
SD/SDHC memory card
0.26
106.0 (H) x 27.8 (W) x 110.0 (D)
 
Up to 8 axes
62.5 μs, 125 μs, 250 μs, 500 μs, 1000 μs, 2000 μs, 4000 μs, 8000 μs
Linear interpolation (up to 4 axes), 2-axis circular interpolation
Positioning control, speed control, torque control, synchronous control, cam control
Trapezoidal acceleration/deceleration, jerk acceleration/deceleration, acceleration/deceleration time fixed method
Driver unit conversion
• Module: master axis, cam, gear
• Master axis: real drive axis, virtual drive axis, real encoder axis, virtual encoder axis, virtual linked axis
Unit character string and decimal digit can be defined by users.
(The following are given units: mm, inch, degree, pulse)
• PLC CPU: ladder diagram, function block diagram/ladder diagram, structured text language
• Motion module: structured text language
Parameters and programs can be saved on a flash ROM (batteryless backup)
Driver home position return*2
Linear interpolation control (up to 4 axes), 2-axis circular interpolation (border point-specified, central point-specified, radius-specified circular interpolation), speed control, current value change
JOG operation
Speed control not including position loop, speed control including position loop
Torque control, continuous operation to torque control
Provided (batteryless)
Speed command range
Torque limit value (positive/negative direction)
Valid/invalid setting
Movable range check with an address of the set position or the feed machine position.
Provided
Provided
Acceleration/deceleration, acceleration/deceleration time
Provided
Provided
Target position change, movement distance change
0.00 to 10.00 (0 to 1000 %)
Provided
Data logging, real-time monitor
Provided
Provided
Cyclic transmission, transient transmission
Provided
Provided
Provided
1
1.93
CC-Link IE TSN
B
32 points, 1 slot (I/O assignment: 32 points)
CC-Link IE TSN: 100
Via a CPU module (USB, Ethernet)
SD/SDHC memory card
16 M bytes
Up to 32 G bytes
0.26
106.0 (H) x 27.8 (W) x 110.0 (D)
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(*1)The number of controllable axes varies depending on the operation cycle.

(*2)The home position return method set in a driver (a servo amplifier) is used.

(*3)4-axis linear interpolation control is enabled only at the reference axis speed.

(*4)Use a high-speed counter module.

(*5)The safety extension module can be combined with a Motion module with version 1.001 or later

(*6)Eight channels of each word data and bit data can be displayed in real time.