1. GENERAL DESCRIPTION
1
−
3
1.1 System
Configuration
1.1.1
A172SHCPUN/A171SHCPUN System overall configuration
Motion slot
PLC module slot
Manual pulse generator/
synchronous encoder
interface module
L
imit
s
wit
c
h
o
u
tp
ut
mo
dul
e
Battery
Emergency stop input
A1S input module or
special function module
Extension cable
(A1SC B for
A1S6 B
and A168B)
(A1S NB
for A6 B)
P
o
w
e
r suppl
y
m
odul
e
CPU base unit(A178B-S1/A17 B)
IBM PC
(DOS)
Manual pulse generator 1
(MR-HDP01)
Teaching unit
A31TU-E/A30TU-E
External input signals
SSC I/F card/board
(A30CD-PCF/A30BD-PCF)
Electromagnetic brake command output
SSCNET cable
Termination
resistance
A6BAT
100/200VAC
Motion CPU
A172
SENC
A1S
Y42
P
E
Serial absolute synchronous encoder cable
(MR-HSCBL M)
Serial absolute synchronous encoder 1
(MR-HENC)
TRA tracking
FLS upper stroke limit
RLS lower stroke limit
STOP signal
DOG/CHANGE near-zero point dog/
changeover between speed and position
8
1
RS422
RS422
IBM PC (DOS,Windows)
SSCNET2
SSCNET1
d1
d2
d3
dn
M
E
M
E
M
E
M
E
MR-H-BN/MR-J2S-B/MR-J2-B model
Servo amplifier
(Note-2)
(Note-2):n:No. of control axes (max.)
A171SHCPUN 4
A172SHCPUN 8
A171SHCPUN A172SHCPUN
4
1
PLC extension base
Up to one extension base unit for A1S6 B
Up to one extension base unit for A168B
(GOT compatible)
Up to one extension base unit for A6 B
GOT
(Note-1)
(Note-1):No. of motion slots
A17 B 1
A178B-S1 2
Communication cable
(A270CDCBL M/
A270BDCBL M)
SSCNET:Servo System Controller NETwork
POINTS
(1) When using the PLC extension base and bus connection type GOT,
select the A168B as the PLC extension base. When not using the PLC
extension base, you can connect the bus connection type GOT directly to
the extension connector of the CPU base unit.
(2) When using a teaching unit A31TU-E with a dead-man switch, a
dedicated connecting cable A31TUCBL03M is required between the CPU
unit and A31TU-E connector. If the A31TU-E is connected directly to the
RS422 connector of the CPU without using a dedicated cable, the
A31TU-E will not operate at all. After disconnecting the A31TU-E, attach
a short-circuit connector A31SHORTCON for A31TUCBL.
(3) In a motion module, a PLC A1S I/O modules can also be installed.
(4) Though the external input signals of A172SENC are reserved for eight
axes, for A171SHCPUN, set those for the first half four axes (PX0 to
PX0F).
(5) When the power supply to the servo system CPU is switched ON and
OFF, erroneous process outputs may temporarily be made due to the
delay between the servo system CPU power supply and the external
power supply for processing (especially DC), and the difference in startup
times.
For example, if the power supply to the servo system CPU comes on
after the external power supply for processing comes on at a DC output
module, the DC output module may temporarily give erroneous outputs
when the power to the servo system CPU comes on. Accordingly a
circuit that ensures that the power supply to the servo system CPU
comes on first should be constructed.
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