8AC servo systems
Sigma-5 MECHATROLINK-II Servo Drives
General specifications
I/O specifications
I/O signals (CN1) - input signals
Note: 1. The functions allocated to /DEC, P-OT, N-OT, /EXT1,-/EXT2 and /EXT3 input signals can be changed by using the
parameters.
2. If the Forward/ Reverse run prohibited function is used, the software can be used to stop the Servo drive. If the application does not satisfy
the requirements, add an external circuit for safety reasons as required.
Position/speed/torque control mode
Performance
Speed control range 1:5000
Speed
variance
Load variance During 0 to 100% load ±0.01% max. (at rated speed)
Voltage variance Rated voltage ±10%:0% (at rated speed)
Temperature variance 25 ±25 °C: ±0.1 % max. (at rated speed)
Frequency characteristics 1.6 kHz
Torque control accuracy (Repeatability) ±1%
Soft start time setting 0 to 10 s (acceleration, deceleration can each be set.)
Command input
MECHATROLINK
Communication
MECHATROLINK-II commands
(for sequence, motion, data setting/reference, monitor, adjustment and other commands)
I/O signal
Position signal output A-phase, B.phase, C-phase: line driver output.
Sequence input signal Homing deceleration limit switch, forward/reverse run prohibited, external latch signals, forward/reverse current
limit.
Sequence output signal It is possible to output three types of signal form incl.: positioning complete, speed coincidence detection, servo-
motor rotation detection, servo ready, current limit detection, speed limit detection, brake release, warning, NEAR.
Integrated functions
Communications
USB
Communica-
tions
Interface Personal computer
Communications standard Compliant with USB1.1 standard (12 Mbps)
Function Status display, parameter setting, adjusting functions, utility functions, alarm traceback display, JOG run/autotun-
ing operations and graphing functions for speed/torque command signal, etc
Mechatrolink
Communica-
tions
Communications protocol MECHATROLINK-II
Station Address 41H to 5FH (max. number of slaves: 30)
Transmission Speed 10 Mbps
Transmission Cycle 250 µs, 0.5 to 4.0 ms (multiple of 0.5 ms)
Data length 17-bytes and 32-bytes
Automatic load inertia detection Automatic motor parameter setting. One parameter rigidity setting.
Dynamic brake (DB) Operates during main power OFF, servo alarm, servo OFF or overtravel
Regenerative processing Internal resistor included in models from 500 W to 5 kW. Regenerative resistor externally mounted (option).
Overtravel (OT) prevention function DB stop, deceleration stop or coast to stop during P-OT, N-OT operation
Encoder divider function Optional division pulses possible
Electronic gearing 0,01< Numerator/Denominator<100
Internal speed setting function 3 speeds may be set internally
Protective functions Overcurrent, overvoltage, low voltage, overload, regeneration error
Analog monitor functions for supervision Integrates analog monitor connectors for supervision of the speed and torque reference signals, etc.
Number of channels: 2 (Output volatge: +/-10V DC).
Panel operator Display functions CHARGE, 7-segments LEDX1
Switches Rotary switch: MECHATROLINK-II station address setting (16 channels)
DIP switch: MECHATROLINK-II communications setting (4 channels)
Safety functions Hard wire base block signal and status monitor (fixed output) of safety circuit
Others Reverse connection, zero search, automatic motor discrimination function, and DC reactor connection terminal
for high frequency power suppression function.
Pin No. Signal name Function
9 Common /DEC Homing deceleration limit switch Connects the deceleration limit switch for homing.
7
8
P-OT
N-OT
Forward run prohibited
Reverse run prohibited
Overtravel prohibited: Stops servo motor when movable part travels beyond the
allowable range of motion.
10
11
12
/EXT 1
/EXT 2
/EXT 3
External latch signal 1
External latch signal 2
External latch signal 3
Connects the external signals that latch the current feedback pulse counter.
6 +24VIN Control power supply input for sequence signals: users must provide the +24 V power supply.
Allowable voltage fluctuation range: 11 to 25 V.
14
15
BAT (+)
BAT (-)
Connecting pin for the absolute encoder backup battery.
Do not connect when a battery is connected to the host controller.
13 /SIO General-purpose input signal:
Monitored in the I/O monitor field of MECHATROLINK-II.