8
AC 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.
Po
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ition/
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d/
to
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con
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l mode
P
e
rf
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rma
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e
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.)
Com
m
and inpu
t
MECHATROLINK
Communication
MECHATROLINK-II commands
(for sequence, motion, data setting/reference, monitor, adjustment and other commands)
I/
O si
g
n
a
l
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.
I
n
te
g
ra
te
d
f
unc
ti
ons
Com
m
unic
a
tions
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.
