Specifications

Installation and Maintenance Manual
EX12*-SMB1 Series (Mitsubishi MELSEC-A Series,
MELSECNET/MINI-S3 Data Link System)
This manual should be read in conjunction with the current product catalogue
For future reference, please keep this manual in a safe place
Safety Instructions
These safety instructions are intended to prevent a hazardous situation
and/or equipment damage. These instructions indicate the level of
potential hazard by label of “CAUTION”,“WARNING”.
To ensure safety,be sure to observe ISO, JIS and other safety practices.
CAUTION : Operator error could result in injury or
equipment damage.
WARNING: Operator error could result in serious
injury or loss of life.
CAUTION
Thoroughly read this manual and operate the product within the spec-
ified range. Follow the instructions.
Do not drop or impart any impact to the product.
Use within specified voltage range. Use outside of specified voltage
will cause malfunction, damage to unit, electric shock, and fire.
Do not touch the terminals or internal circuit board while they are
energized. It may cause malfunction, damage to unit, and electric
shock.
Use within operating ambient temperature.Do not use where temper-
atures can rapidly change even though it is within the specifications.
Foreign objects should be prevented from entering the product.
Contamination by foreign objects, such as wire chips will cause fire,
breakage, and malfunction.
Use within the operating environment of the protection structure.
Avoid using IP20 where water or oil, etc. can be splashed. IP65 is
achieved by mounting on manifold solenoid valve and process wire
entry correctly.
Carry out regular checks to confirm correct operation. Safety may not
be maintained by unintentional malfunction or incorrect operation.
WARNING
The product specified here is designed to be used in standard factory
automation equipment. Do not use in machinery and/or equipment
where operators may be injured,and malfunction or failure may cause
loss of life.
Do not disassemble to repair or modify the product.
Specifications
Item Specifications
Model EX120- EX121- EX122- EX123- EX124-
SMB1 SMB1 SMB1 SMB1 SMB1
Output point 16 points
Output style Transistor style
(NPN open collector style)
Connecting load DC24V, Solenoid valve with lamp-surge voltage protection circuit of 2.1W or less
Residual voltage 0.4V or less
Occupied station 2 stations
Power Unit DC24V±10%
supply Solenoid DC24V+10%, -5%
DC24V+10%,-5%
voltage valve
Current consumption 0.1A or less (inside unit)
Weight (or less) 110g 140g 130g 240g 240g
Operating 0~+55°C (Max. 8 points ON)
ambient temperature 0~+50°C (All points ON)
Operating 35~85%RH (No dew allowed)
ambient humidity
Vibration resistance 5G (According to JIS C0912)
Impact resistance 10G (According to JIS C0911)
Noise resistance 1000Vp-p pulse width 1µS leading 1nS
Withstand voltage AC1000V 50/60Hz for 1 min.between the terminal and the case
Insulation resistance More than 2M(DC500V) between the terminal and the case
Operating atmosphere No corrosive gas
Protection class IP20 IP65
Outline
This SI unit is able to connect to Mitsubishi Electric Corp. PLC,
MELSEC-A series, MELSECNET/MINI-S3 Data Link system.
This SI unit has 16 output points (2 stations). Maximum is 512 I/O
points (64 stations) per PLC master unit.
Applicable PLC
The following master unit is required to operate MELSECNET/MINI-S3
data link system:
AnS type A1SJ71PT32-S3
A type AJ71PT32-S3
Note:Refer to the Mitsubishi Electric Corporation User Manual for full
details.
Applicable solenoid valves
SI unit Applicable solenoid valve
EX120-SMB1 VQ1000,VQ2000
EX121-SMB1 VQ1000,VQ2000, SX3000, SX5000,
SY3000, SY5000
EX122-SMB1 SX3000, SX5000, SY3000,SY5000
EX123-SMB1 VQ2000,VQ4000
EX124-SMB1 VQ2000,VQ4000
Refer to the catalogues for each solenoid valve for details.
CAUTION
If solenoid valves, other than those stated in the chart above,are used,
SMC offers no guarantee against malfunction of the SI unit,nor if any
load, other than solenoid valves is used.
Terminal block
Terminal name Connected to
24V 24V supply power cable
0V 0V supply power cable
SDA RDA of the next station
SDB RDB of the next station
SG SG of the previous and next station
RDA SDA of the previous station
RDB SDB of the previous station
FG Grounding conductor and shield
0V
(Note 1)
0V supply power cable (for solenoid valve)
24V
(Note 1)
24V supply power cable (for solenoid valve)
Note 1: Only EX124-SMB1 corresponds
Wiring (Fig 1)
CAUTION
Power of the product and all other equipment should be turned off
while wiring.
Tighten the wiring with terminal screw completely.The terminal screw
for connection is M3. Use appropriate crimp-style terminal for the
terminal screw. Short circuit, fire, and malfunction will be caused if
terminal screw is not tightened enough.
Avoid incorrect wiring. It may damage the product and/or other
equipment.
Ensure that the FG terminal is correctly earthed.
Power with correct capacity should be prepared by considering the
in-rush current when starting.
Influence of noise should be avoided for the wiring.Wiring should be
separated from power cables and high voltage cables.
Wiring of the signal cables
Wiring of twisted pair cable should follow the drawing shown in Fig
1. Shielding of shield cable should be one point grounding at
receiving side, or sending side. Use cable recommended by Mitsubishi
Electric Corporation.
Wiring of power supply
Ensure that the power is within the specified voltage range.
Ensure that the cable is capable of supporting the solenoid and SI unit
in terms of rating.
Corresponding SI unit output and solenoid valve
1. Standard wiring
The outputs of the SI unit are assigned from the D side (down)
solenoid valve in the order 0,1, 2, etc.
The SI unit can be mounted from the direction of the D side or the U
side (up).
CAUTION
Products exist that can only be mounted from one side of the mani-
fold. Please refer to the current catalogue for each solenoid valve.
When the number of stations on a VQ,SX manifold are 8 or less the
internal wiring will default to DOUBLE solenoid wiring.
2. Non standard wiring (mixed wiring)
Mixed wiring is available as a non-standard option. If mixed wiring is
specified, the positions of the single and double solenoids on the
manifold must be indicated when ordering.
LED display
LED name Content
POWER Lights in case of the power supply input
RUN Lights when the data is normally
communicating with the master station
SD Lights when sending of data (high speed
flashing)
RD Lights when receiving of data (high speed
flashing)
ERR Lights when receiving data error and is out
in normal communication
Address setting
Power should be turned off to set address. Open the SI unit cover,
adjust by turning the address setting switch using a small bladed
screwdriver. Setting range is 1~64. As the SI unit has 2 occupied
stations, the setting will be 1,3,5...63. The address can be set
regardless of the connecting order, however it is not possible to set
with vacant positions. It is not possible to set address overlap.
For additional information please contact your local SMC office, see
below:
057A/Eng
When you enquire about the product, please contact the following
SMC Corporation:
ENGLAND Phone 01908-563888 TURKEY Phone 212-2211512
ITALY Phone 02-92711 GERMANY Phone 6103-402-0
HOLLAND Phone 020-5318888 FRANCE Phone 01-64-76-10-00
SWITZERLAND
Phone 052-396-31-31 SWEDEN Phone 08-603 07 00
SPAIN Phone 945-184100 AUSTRIA Phone 02262-62-280
Phone 902-255255 IRELAND Phone 01-4501822
GREECE Phone 01-3426076 DENMARK Phone 70 25 29 00
FINLAND Phone 09-68 10 21 NORWAY Phone 67-12 90 20
BELGIUM Phone 03-3551464 POLAND Phone 48-22-6131847
Fig 1
Master unit
SI manifold
solenoid valve
Remote I/O unit
Remote I/O unit
Double
Single
Single
Double
Double
SI unit
B
A
Va
A
Va
A
B
A
B
A
9 • • •
8 • • •
7 • • •
6 • • •
5 • • •
4 • • •
3 • • •
2 • • •
1 • • •
0 • • •
5
4
3
2
1
SI unit
Output No.
U
D
Fig 2
Fig 3
SI unit
Double
Single
Single
Double
Double
B
A
Va
A
Va
A
B
A
B
A
9 • • •
8 • • •
7 • • •
6 • • •
5 • • •
4 • • •
3 • • •
2 • • •
1 • • •
0 • • •
5
4
3
2
1
SI unit
Output No.
Station
U
D
Name of each part and dimension
1) EX120-SMB1
LED
LED
LED
LED
LED
Address setting switch
Address setting switch
Address
setting switch
Address setting switch
Address setting switch
Terminal block
Terminal block
Terminal block
2-G(PF)1/2
2-G(PF)1/2
Housing cover
Housing cover
Terminal block
Terminal block
6.2
113
113
6.2
6.2
64
64
1.2
19
19
9.5
9.5
28.8
28.8
(40.3)
(38.3)
2
28.8
(30)
60.8
19.3
19.3
53.8
66
66
53.8
11.6
11.6
60.8
60.8
66.1
66.1
2) EX121-SMB1
3) EX122-SMB1
4) EX123-SMB1
5) EX124-SMB1
Station
Part identification (Fig 3)

Summary of content (2 pages)