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Bangladesh Distributor
CJ-series Position Control Unit with MECHATROLINK-II interface
![CJ1W-NC[]71](../../../images/l_1528-13-118580-198x198.jpg)
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last update: July 15, 2014
| Item | Specifications |
|---|---|
| Model | CJ1W-NC271/471/F71 (-MA) |
| Internal current consumption | 360 mA max. at 5 V DC |
| Dimensions | 31 × 90 × 65 mm (W × H × D) |
| Weight | 95 g max. |
| Ambient operating temperature | 0 to 55°C |
| Approved standards | CE, cULus, and C-tick |
| Item | Specifications | |
|---|---|---|
| Unit classification | CPU Bus Unit | |
| Applicable PLCs | CJ Series | |
| Possible unit number settings | 0 to F | |
| I/O
allocations |
Common Operating
Memory Area |
Words allocated in CPU Bus Unit Area: 25 words (15 output words, 10 input words) |
| Axis Operating
Memory Area |
Allocated in one of the following areas (user-specified):
CIO, Work, Auxiliary, Holding, DM, or EM Area. Number of words allocated: 50 words (25 output words, 25 input words) × Highest axis No. used |
|
| Compatible devices | OMRON G5-series Servo Drives (Built-in MECHATROLINK-II communications)
OMRON G-series Servo Drives (Built-in MECHATROLINK-II communications) |
|
| Control method | Control commands executed using MECHATROLINK-II synchronous communications. | |
| Maximum number of controlled
axes |
CJ1W-NC271: 2 axes, CJ1W-NC471: 4 axes, CJ1W-NCF71: 16 axes | |
| Control
units |
Position command
unit |
Command unit:Depends on the Electronic Gear Setting in the Servo Parameters.
Default setting: Pulses |
| Speed command
unit for position control |
Command units/s | |
| Acceleration/
deceleration speeds for position control |
10,000 command units/s2 | |
| Speed command
unit for speed control |
0.001% of the motor's momentary maximum rotation speed | |
| Torque command
unit for torque control |
0.001% of the motor's momentary maximum torque | |
| Control
command range |
Position command
range |
2,147,483,648 to 2,147,483,647 (command units) |
| Speed command
range for position control |
0 to 2,147,483,647 (command units/s) | |
| Acceleration/
deceleration speeds for position control |
1 to 65,535 (10,000 command units/s2) | |
| Speed command
range for speed control |
-199.999% to 199.999%
The upper limit of the speed command range depends on the specifications of the Servo Drive. |
|
| Torque command
range for torque control |
-199.999% to 199.999%
The upper limit of the torque command range depends on the specifications of the Servo Drive. |
|
| Control
functions |
Servo lock/unlock | Creates (Servo lock) or releases (Servo unlock) the position loop on the PCU. |
| Position control | Positions to an absolute position or relative position according to the target
position and target speed specified from the ladder program. |
|
| Origin
determination |
Origin search: Establishes the origin using the specified search method.
Present position preset: Changes the present position to a specified position to establish the origin. Origin return: Returns the axis from any position to the established origin. Absolute encoder origin: Establishes the origin using a Servomotor that has an absolute encoder, without having to use an origin search. |
|
| Jogging | Outputs pulses at a fixed speed in the forward rotation or reverse rotation
direction. |
|
| Interrupt feeding | Performs positioning by moving the axis a fixed amount when an external interrupt
input is received while the axis is moving. |
|
| Speed control | Performs speed control by sending a command to the Servo Drive speed loop. | |
| Torque control | Performs torque control by sending a command to the Servo Drive current loop. | |
| Stop functions | Deceleration stop: Decelerates the moving axis to a stop.
Emergency stop: Positions the moving axis for the number of pulses remaining in the deviation counter and then stops the axis. |
|
| Auxiliary
functions |
Acceleration/
deceleration curves |
Sets one of the following: a trapezoidal (linear) curve, an exponential curve, or an
S-curve (moving average). |
| Torque limit | Restricts the output torque during axis operation. | |
| Override | Multiplies the axis command speed by a specified ratio.
Override: 0.01% to 327.67% |
|
| Servo parameter
transfer |
Reads and writes the Servo Drive parameters from the ladder program in the CPU
Unit. |
|
| Monitoring
function |
Monitors the control status of the Servo Drive, such as the command coordinate
positions, feedback position, current speed, and torque. |
|
| Software limits | Limits software operation within the positioning range during position control. | |
| Backlash
compensation |
Compensates for the amount of play in the mechanical system according to a set
value. |
|
| Deviation counter
reset |
The position deviation in the Servo Drive's deviation counter can be reset to 0
(unit version 1.3 or later). |
|
| External
I/O |
Position Control
Unit |
One MECHATROLINK-II interface port |
| Servo Drive I/O | Forward/reverse rotation limit inputs, origin proximity inputs, external interrupt
inputs 1 to 3 (can be used as external origin inputs) |
|
| Self-diagnostic functions | Watchdog, flash memory check, memory corruption check | |
| Error detection functions | Overtravel, Servo Drive alarm detection, CPU error, MECHATROLINK
communications error, Unit setting error |
|
| Item | Specifications |
|---|---|
| Communications protocol | MECHATROLINK-II |
| Baud rate | 10 Mbps |
| Maximum transmission distance | 50 m *1 |
| Minimum distance between stations | 0.5 m |
| Transmission media | Shielded, twisted-pair cables |
| Maximum No. of stations | 30 slave stations max. *2 |
| Topology | Bus |
| Transfer cycle | 250 μs to 8 ms |
| Communications method | Master-slave, totally synchronous |
| Encoding | Manchester encoding |
| Data length | 17 bytes/32 bytes selectable *3 |
last update: July 15, 2014
Item list of CJ1W-NC[]71
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