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Chapter 2 Specifications; Performance Specifications - Mitsubishi Electric RD77MS2 User Manual

Melsec iq-r series simple motion module.
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This chapter describes the performance specifications of the RD77MS.

Performance Specifications

This section lists the performance specifications of the RD77MS.
Number of controlled axes
Operation cycle
Interpolation function
Control system
Control unit
Positioning data
Execution data backup function
Positioning system
Positioning range
Speed command
Acceleration/deceleration process
Acceleration/deceleration time
Sudden stop deceleration time
2.1 Performance Specifications
2 axes
4 axes
0.444 ms/0.888 ms/1.777 ms/3.555 ms
2-axis linear
2-, 3-, or 4-axis linear interpolation, 2-axis circular interpolation, 3-axis
interpolation, 2-axis
helical interpolation
circular interpolation
PTP (Point To Point) control, path control (linear, arc, and helix can be set), speed control, speed-
position switching control, position-speed switching control, speed-torque control
mm, inch, degree, pulse
600 data/axis
Parameters, positioning data, and block start data can be saved on flash ROM. (battery-less backup)
PTP control: Incremental system/absolute system
Speed-position switching control: Incremental system/absolute system
Position-speed switching control: Incremental system
Path control: Incremental system/absolute system
In absolute system
• -214748364.8 to 214748364.7 (m)
• -21474.83648 to 21474.83647 (inch)
• 0 to 359.99999 (degree)
• -2147483648 to 2147483647 (pulse)
In incremental system
• -214748364.8 to 214748364.7 (m)
• -21474.83648 to 21474.83647 (inch)
• -21474.83648 to 21474.83647 (degree)
• -2147483648 to 2147483647 (pulse)
In speed-position switching control (INC mode)/position-speed switching control
• 0 to 214748364.7 (m)
• 0 to 21474.83647 (inch)
• 0 to 21474.83647 (degree)
• 0 to 2147483647 (pulse)
In speed-position switching control (ABS mode)
0 to 359.99999 (degree)
0.01 to 20000000.00 (mm/min)
0.001 to 2000000.000 (inch/min)
0.001 to 2000000.000 (degree/min)
1 to 1000000000 (pulse/s)
Trapezoidal acceleration/deceleration, S-curve acceleration/deceleration
1 to 8388608 (ms) (Four patterns can be set for each of acceleration time and deceleration time.)
1 to 8388608 (ms)
8 axes
16 axes


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