Mitsubishi Electric MELSEC ST Series User manual

MELSEC ST Series
Modular Input/Output System
Installation Manual
Head Station
Power Feeding Modules
Digital I/O-Modules
Analog I/O-Modules
Art.no.: 163534
21042005
Version A INDUSTRIAL AUTOMATION
MIT
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About this Manual
The texts, illustrations, diagrams, and examples contained in this manual are
intended exclusively as support material for the explanation, handling and
operation of the componenets of the MELSEC ST Series.
If you have any questions concerning the programming and operation of the
equipment described in this manual, please contact your relevant sales office
or department (refer to back of cover).
Current information and answers to frequently asked questions are also
available through the Internet (www.mitsubishi-automation.com).
MITSUBISHI ELECTRIC EUROPE B.V. reserves the right to change the
specifications of its products and/or the contents of this manual at any time
without prior notice.
©MITSUBISHI ELECTRIC EUROPE B.V. 04/2005
2MITSUBISHI ELECTRIC
Installation Manual
MELSEC ST Series
Article No.: 163534
Version Changes/Additions/Corrections
A 04/2005 pdp-dk First edition

MELSEC ST Series 3
1 Introduction
1.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Special Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 System Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3.2 Components of the MELSEC ST Series . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3.3 Notes on System Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2 Specifications
2.1 General Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Specifications of the Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.1 Head Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.2 Power Distribution Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.3 Digital Input Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.4 Transistor Output Modules (Source Type) . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.5 Contact Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.6 Analog Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2.7 Analog Output Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3 Description of the Modules
3.1 Head Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1.2 LEDs of the Head Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1.3 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2 Base Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.3 Power Distribution Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3.2 LEDs of the Power Distribution Modules . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.3.3 Terminal Layout and External Connections . . . . . . . . . . . . . . . . . . . . . . 24
3.4 I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.4.2 LEDs of the I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4.3 Terminal Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4MITSUBISHI ELECTRIC
4 Installation
4.1 Handling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.2 Mounting the DIN Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.3 Mounting the Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.3.1 Mounting of the Head Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.3.2 Mounting of the Base Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.3.3 Mounting the End plate and the End Bracket . . . . . . . . . . . . . . . . . . . . . 34
4.3.4 Mounting the Electronics Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4.4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.1 Connecting the Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.4.2 Connecting the I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.5 Connection of the PROFIBUS/DP Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.6 Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
5 Trouble Shooting
5.1 Checking the System Set-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.2 Head Station Self-Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.3 Error Diagnostics using the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
A Appendix
A.1 External Dimensions of the Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
A.1.1 Head station ST1H-PB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
A.1.2 Base Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
A.1.3 Power Distribution Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
A.1.4 I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Safety Information
For qualified staff only
This manual is only intended for use by properly trained and qualified electrical technicians who
are fully acquainted with automation technology safety standards. All work with the hardware
described, including system design, installation, setup, maintenance, service and testing, may
only be performed by trained electrical technicians with approved qualifications who are fully
acquainted with the applicable automation technology safety standards and regulations.
Proper use of equipment
The moduls of the MELSEC ST Series are only intended for the specific applications explicitly
described in this manual. Please take care to observe all the installation and operating parame-
ters specified in the manual. All products are designed, manufactured, tested and
documentated in agreement with the safety regulations. Any modification of the hardware or
software or disregarding of the safety warnings given in this manual or printed on the product
can cause injury to persons or damage to equipment or other property. Only accessories and
peripherals specifically approved by MITSUBISHI ELECTRIC may be used. Any other use or
application of the products is deemed to be improper.
Relevant safety regulations
All safety and accident prevention regulations relevant to your specific application must be
observed in the system design, installation, setup, maintenance, servicing and testing of these
products. The regulations listed below are particularly important. This list does not claim to be
complete; however, you are responsible for knowing and applying the regulations applicable to
you.
쎲VDE Standards
–VDE 0100
(Regulations for electrical installations with rated voltages up to 1,000V)
–VDE 0105
(Operation of electrical installations)
–VDE 0113
(Electrical systems with electronic equipment)
–VDE 0160
(Configuration of electrical systems and electrical equipment)
–VDE 0550/0551
(Regulations for transformers)
–VDE 0700
(Safety of electrical appliances for household use and similar applications)
–VDE 0860
(Safety regulations for mains-powered electronic appliances and their accessories for
household use and similar applications)
쎲Fire prevention regulations
쎲Accident prevention regulations
–VBG No. 4 (Electrical systems and equipment)
Safety Information
MELSEC ST Series 5

Safety warnings in this manual
In this manual special warnings that are important for the proper and safe use of the products are
clearly identified as follows:
PDANGER:
Personnel health and injury warnings. Failure to observe the precautions described
here can result in serious health and injury hazards.
ECAUTION:
Equipment and property damage warnings. Failure to observe the precautions
described here can result in serious damage to the equipment or other property.
General safety information and precautions
The following safety precautions are intended as a general guideline for using the PLC together
with other equipment. These precautions must always be observed in the design, installation
and operation of all control systems.
PDANGER:
Safety Information
6MITSUBISHI ELECTRIC
쎲
Observe all safety and accident prevention regulations applicable to your spe-
cific application. Installation, wiring and opening of the assemblies, compo-
nents and devices may only be performed with all power supplies discon-
nected.
쎲
Assemblies, components and devices must always be installed in a shock-
proof housing fitted with a proper cover and protective equipment.
쎲
Devices with a permanent connection to the mains power supply must be inte-
grated in the building installations with an all-pole disconnection switch and a
suitable fuse.
쎲
Check power cables and lines connected to the equipment regularly for breaks
and insulation damage. If cable damage is found, immediately disconnect the
equipment and the cables from the power supply and replace the defective ca-
bling.
쎲
Before using the equipment for the first time check that the power supply rating
matches that of the local mains power.
쎲
Residual current protective devices pursuant to DIN VDE Standard 0641 Parts
1-3 are not adequate on their own as protection against indirect contact for in-
stallations with positioning drive systems. Additional and/or other protection
facilities are essential for such installations.
쎲
EMERGENCY OFF facilities pursuant to EN 60204/IEC 204 VDE 0113 must re-
main fully operative at all times and in all control system operating modes. The
EMERGENCY OFF facility reset function must be designed so that it cannot
cause an uncontrolled or undefined restart.
쎲
You must also implement hardware and software safety precautions to prevent
the possibility of undefined control system states caused by signal line cable
or core breaks.
쎲
All relevant electrical and physical specifications must be strictly observed
and maintained for all the modules in the installation.

1 Introduction
The most important characteristics of the MELSEC ST series are summarized in this installation
description. This description is designed to help the experienced user quickly start-up the mod-
ules. Additional information and a detailed mounting and wiring description is in the MELSEC ST
series operating manual. This documentation is provided solely as a quick reference.
1.1 General Description
The MELSEC ST series is a modular input and output system which is connected as slave sta-
tion to a PROFIBUS/DP network. An ST series station consists of
쎲a head station to which the PROFIBUS is connected.
쎲Power supply modules.
쎲Digital and analog I/O modules.
The I/O modules can be combined as desired according to the requirements.
1.2 Special Features
Reduced wiring effort
– External voltages
for supplying sensors and actuators are connected to the power distribution modules of
the ST series only.The other system modules are supplied with power via internal connec-
tions. Wiring requirements are significantly reduced because the supply voltage does not
need to be connected to each individual module.
– PROFIBUS connection
Only the head station is connected to the PROFIBUS/DP network.
–Connection of the I/O modules
Peripherals are connected either via spring clamp terminals, (into which the wires are just
inserted), or via conventional screw clamp terminals.
Flexible System Set-up
The number of inputs and outputs can be adapted easily to the application. Digital modules with
2, 4, and 16 inputs, and with 2 and 16 outputs are available. Up to 63 I/O modules (max. 26 ana-
log I/O modules) can be connected to one head module.
Simple Service
The electronics modules are plugged into a base module to which the peripheral signals are
connected. The base module is mounted on a DIN rail. Electronic modules can be replaced in
operation. No tool is required to do this. The GX Configurator DP is available to configure the
system.
Introduction
MELSEC ST Series 7

1.3 System Configuration
1.3.1 Overview
A slave station set-up with the MELSEC ST series is connected to a PROFIBUS/DP network.
Use is not limited to networks with a MELSEC PLC as master station, but is also possible in net-
works with devices from “third-party” manufacturers.
Populating the stations with ST modules is based on the requirements of the application. Analog
modules for capture or output of voltages or currents are available, in addition to digital input and
output modules.
“ST” means “Slice Type terminal”, and refers to the narrow width of the modules (only 12.6 mm!).
In addition to the narrow modules, cost-saving modules with 16 digital inputs or outputs are also
available.
An ST series slave station always consists of a head station, which establishes the connection
to the PROFIEBUS/DP network. At least one power distribution module, and the digital and/or
analog I/O modules are connected to the head station.
The I/O modules consist of an electronics module and a base module, which establishes the
connection to the head station via screw clamp terminals, or spring clamp terminals. The elec-
tronics modules are simply plugged onto the base module, which in turn is mounted on a DIN
rail. It is not necessary to disconnect the wiring when swapping out a module because the sig-
nals are connected to the base module.
Introduction
8MITSUBISHI ELECTRIC
Q
Y10
QX4 0
Q
61
P-A2
X1X10
X1X10
X1X10
X1X10
GX Configurator DP
GX Configurator ST
Master station (QJ71PB92D
Slave station Slave station
Slave station
Slave station
Slave station (MELSEC ST series)
Bus terminator
Slave station
(MELSEC ST series)
Bus terminator

1.3.2 Components of the MELSEC ST Series
NOTE A base module is required for mounting each ST series electronics module, except for the
head station.
*Base modules with screw clamp terminals and base modules with spring clamp terminals
cannot be used together in one system. Use either one of them.
1.3.3 Notes on System Setup
Operation of the ST1PSD power distribution module is possible in two different modes: In “H”
mode, 24 V DC is made available to supply the head station and the I/O modules, as well as 5 V
DC for the backplane bus. In “R” mode only the internal backplane bus is supplied with 5 V DC.
The mode (H or R) is selected by using different base modules that are identified by the letters
“H” or “R” in the type designation.
At least one ST1PSD is required in “H” mode in order to operate an ST series station. This is
installed on the right side of the head station. Additional power supplies ( with the “R” base mod-
ule) are only required if power consumption of the installed ST modules exceeds the capacity a
single power distribution module.
Introduction
MELSEC ST Series 9
Product Elektronic
module Description
Applicable base modules*
Spring clamp
terminals
Screw clamp
terminals
Head station ST1H-PB For connection to the
PROFIBUS Not necessary Not necessary
Power
distribution
modules
Bus refreshing module ST1PSD
For powering the head
station
(Supply of 5 V DC and
distribution of 24 V DC)
ST1B-S4P2-H-SET ST1B-E4P2-H-SET
For increasing the capac-
ity of the 5 V DC supply ST1B-S4P2-R-SET ST1B-E4P2-R-SET
Power feeding module ST1PDD Distribution of 24 V DC to
the I/O modules ST1B-S4P2-D ST1B-E4P2-D
Digital
I/O modules
Input modules
(Negative common type)
ST1X2-DE1 2 inputs, 24 V DC ST1B-S4X2 ST1B-E4X2
ST1X4-DE1 4 inputs, 24 V DC ST1B-S6X4 ST1B-E6X4
ST1X16-DE1 16 inputs, 24 V DC ST1B-S4X16 ST1B-E4X16
Output modules
ST1Y2-TE2 2 transistor outputs, 24 V
DC, 0,5 A, source type ST1B-S3Y2 ST1B-E3Y2
ST1Y16-TE2
16 transistor outputs,
24 V DC, 0,5 A, source
type
ST1B-S3Y16 ST1B-E3Y16
ST1Y2-TPE3
2 transistor outputs,
24 V DC, 1 A, source
type, short circuit
protected
ST1B-S3Y2 ST1B-E3Y2
ST1Y16-TPE3
16 transistor outputs,
24 V DC, 1 A, source
type, short circuit pro-
tected
ST1B-S3Y16 ST1B-E3Y16
ST1Y2-R2 2 contact outputs
240 V AC / 24 V DC, 2 A ST1B-S4IR2 ST1B-E4IR2
Intelligent func-
tion modules
Analog input modules
ST1AD2-V 2 voltage inputs
ST1B-S4IR2 ST1B-E4IR2
ST1AD2-I 2 current inputs
Analog output modules
ST1DA2-V 2 voltage outputs
ST1DA1-I 1 current output

The ST1PDD power feeding module supplies the connected actuators and sensors with a 24 V
direct current.
Use voltages from different sources to connect to the module’s “SYS” and “AUX” terminals. If
multiple ST1PSD are used, then all “SYS” voltage inputs must be supplied by the same power
source.
The power distribution modules and power feeding modules are not overload-protected. It is
strictly required to provide fuses between power supply and module.
Analog modules must be separately supplied with power. Use an ST1PDD to separate the
power supply of digital and analog modules. The ST1PDD is mounted on the DIN rail to the left of
the modules that it will supply.
The DIN rail on which the modules are mounted must be conductive.
Introduction
10 MITSUBISHI ELECTRIC
AC/DC
AC/DC AC/DC AC/DC
SYS. AUX. AUX. AUX.
24 V
24 V
24 V
24 V
Head station
Bus refreshing moduel
Analog modules Power feeding module
Digital modules (excluding contact output modules)
Contact output modules
DIN rail
Power feeding module
Power supply for
voltage SYS
Power supplies for
voltage AUX
ST1H-PB
ST1PSD
ST1AD2-V ST1DA2-V
ST1PDD ST1PDD
ST1Y2-DE1 ST1X2-DE1
ST1Y2-R2 ST1Y2-R2
161
131 151
ST1X16
-DE1
RUN ERR.
21
11 41
31 61
51 81
71 101
91 121 141
111
11 31 51 71 91 111 131 151
21 41 61 81 101 121141161
12 32 52 72 92 112 132 152
22 42 62 82 102122142 162
13 33 53 73 93 113 133 153
23 43 63 83 103123143 163
14 34 54 74 94 114 134 154
24 44 64 84 104 124144164
ST1X2
-DE1
RUN ERR.
21
11
11 21
12 22
13 23
14 24
ST1PSD
RUN ERR.
PW
11 11
21 21
12 12
22 22
13
14
13
14
23
24
23
24
MITSUBISHI
STATION
ST1H-PB
ON
RS-232C
RELEASE
RESET
PROFIBUSI/F
+-
RUN M1
ERR. M2
REL.
DIA SYN.
BF FRE.
80
S
T
A
T
I
O
N
N
O
40
20
10
8
4
2
1
ST1DA2
-V
RUN ERR.
11 21
12 22
13 23
14 24
ST1AD2
-I
RUN ERR.
11 21
12 22
13 23
14 24
ST1AD2
-V
RUN ERR.
11 21
12 22
13 23
14 24
The maximum width of a station consisting
of modules of the MELSEC ST series is
850 mm. Please note that the width of the
head station is not counted.
max. 850 mm

2 Specifications
2.1 General Specifications
ECAUTION:
Please operate the modules of the MELSEC ST Series in the listed conditions only.
If the modules are used under other conditions, electric shock, fire, malfunction, dam-
ages or deterioration may be caused.
햲This indicates the section of the power supply to which the equipment is assumed to be
connected between the public electrical power distribution network and the machinery
within premises. Category II applies to equipment for which electrical power is supplied
from fixed facilities. The surge voltage withstand level for up to the rated voltage of 300 V is
2500 V.
햳This index indicates the degree to which conductive material is generated in the environ-
ment where the equipment is used. Pollution level 2 is when only non-conductive pollution
occurs but temporary conductivity may be produced due to condensation.
MELSEC ST Series 11
Specifications
Item Specifications
Operating ambient
temperature 0 to +55 °C
Storage ambient
temperature −25 to +75 °C
Ambient humidity for opera-
tion and storage 5 to 95 %, relative humidity, non-condensing
Vibration resistance
Conforms to
JISB3501
and
IEC61131-2
Intermittent Vibration
Frequency Acceleration Amplitude
(half)
Sweep count for
X, Y, Z
10 to 57 Hz — 0.075 mm
10 times
(80 minutes in
each direction)
57 to 150 Hz 9.8 m/s2(1 g) —
Continuous Vibration
10 to 57 Hz — 0.035 mm
57 to 150 Hz 9.8 m/s2(1 g) —
Shock resistance Conforms to JIS B3501 and IEC61131-2: 15 g, 3 times in each direction X, Y und Z
Operating environment No dust, soot, corrosive or conductive dust, corrosive or flammable gas
Operating altitude
max. 2000 m above MSL (Main Sea Level)
(Do not use or store the PLC under pressure higher than the atmospheric pressure
at MSL (0 m). Doing so can cause malfunction. When using the PLC under pressure,
please contact your local representative.)
Installation location Inside control panel
Overvoltage category II max.
Pollution level 2 max.

2.2 Specifications of the Modules
2.2.1 Head Station
햲Calculation of the transmission distance [m per network], when repeaters are used:
transmission distance [m per network] = (Number of repeaters +1) x transmission distance [m per segment]
Specifications
12 MITSUBISHI ELECTRIC
Item ST1H-PB
PROFIBUS/DP station type Slave station
Applicable FDL address 0 to 99 (Factory-set to FDL adress 0)
Maximum I/O points Depends on the choosen mode: 32, 64, 128 or 256
I/O data size Varies depending on the maximum I/O points (Refer to the following table)
Number of
connectable
slice modules
32-point mode maximum 14 modules
64-point mode maximum 30 modules
128-point mode maximum 62 modules
256-point mode maximum 63 modules
Transmission
specification
Electrical standards
and characteristics EIA-RS485 compliant
Applicable cable Shielded twisted pair cable
Network configura-
tion Bus type (tree type when repeaters are used)
Data link method Polling
Transmission encod-
ing method NRZ
Transmission speed
and maximum trans-
mission distance 
Transmission speed Transmission distance
[m per segment]
Max. transmission dis-
tance when 3 repeaters
are used [m]
9.6 kbps
1200 4800
19.2 kbps
45.45 kbps
93.75 kbps
187.5 kbps 1000 4000
500 kbps 400 1600
1.5 Mbps 200 800
3 Mbps
100 4006 Mbps
12 Mbps
Repeater per
network Maximum 3 
Number of stations Maximum 32 (including repeater)
Number of
connectable nodes 32 nodes per segment
Programming interface RS232 Mini-DIN socket for diagnostics and configuraton
Diagnostics LEDs RUN, ERR, REL, DIA, BF, SYN., FRE., M0, M1
Number of occupied slices (Width) 2 slots (25.2 mm)
Number of
occupied I/O
points
Inputs 4
Outputs 4
Internal power consumption (5 V DC) 530 mA
Weight 0.1 kg

The volume of data that is exchanged between slave and master station depends on the mode
that has been set:
2.2.2 Power Distribution Modules
Specifications
MELSEC ST Series 13
Item ST1PSD ST1PDD
SYS.
Rated input voltage 24 V DC
—
Rated allowable voltage 24 V DC ±20 %,
ripple ratio within 5 %
Max. rated input current at 24 V DC 0.7 A
Output 5 V DC, maximum 2.0 A
Efficiency ≥80 %
AUX.
Rated input voltage 24 V DC
Rated allowable voltage 24 V DC +20/ -15 %, ripple ratio within 5 %
Max. rated input current at 24 V DC 0.7 A —
Output 24 V DC, max. 8.0 A
Dielectric withstand voltage 500 V AC for 1 minute,
600 V AC for 1 s across SYS. inputs and AUX. inputs
Insulation resistance ≥10 MΩacross SYS. inputs and AUX. inputs
(Checked with 500 V DC insulation resistance tester)
Noise durability
Checked with noise simulator (Peak-to-peak noise voltage: 500 V,
noise width/noise frequency: 1 µs/25 to 60 Hz)
First transient noise compliant to IEC61000-4-4: 2 kV
Indication of operating status
LED "SYS": Indicates that
5 V DC are output —
LED "AUX": Indicates that 24 V DC are output
Number of occupied slices (Width) 2 slots (25.2 mm) 1 slot (12.6 mm)
Number of occupied I/O points 2 inputs and 2 outputs
Internal power consumption (5 V DC) — 0.06 A
Weight 0.06 kg 0.03 kg
Item
32-point mode 64-point mode 128-point mode 256-point mode
Input Output Input Output Input Output Input Output
Bit I/O points 32 bits 32 bits 64 bits 64 bits 128 bits 128 bits 256 bits 256 bits
Word I/O points
(variable)
max.
52 words
max.
52 words
max.
52 words
max.
52 words
max.
52 words
max.
52 words
max.
32 words
max.
32 words
Request/Informa-
tion area 14 bytes 14 bytes 20 bytes 20 bytes 32 bytes 32 bytes 56 bytes 56 bytes
Total max.
122 bytes
max.
122 bytes
max.
132 bytes
max.
132 bytes
max.
152 bytes
max.
152 bytes
max.
152 bytes
max.
152 bytes

2.2.3 Digital Input Modules
Specifications
14 MITSUBISHI ELECTRIC
Item ST1X2-DE1 ST1X4-DE1 ST1X16-DE1
Number of inputs 2 4 16
Isolation method Photocoupler
Rated input voltage 24 V DC
Rated allowable voltage 20.4 tos 28.8 V, ripple ratio within 5 %
Rated input current 4 mA
Voltage for ON ≥19 V
Current for ON ≥3 mA
Voltage for OFF ≤11 V
Current for OFF ≤1.7 mA
Input resistance 5.6 kΩ
Response time
OFF 씮
ON
0.5 ms/1.5 ms or less at 24 V DC
Factory setting: 1.5 ms
The response time of the input module can be set by using the configuration
software of the master station. When the master station is a Mitsubishi Elec-
tric PLC, use GX Configurator-DP.
ON 씮
OFF
Maximum current at 24 V DC
2 A
(During online module change, the maximum inrush current is 2A per input
for approx. 5 ms.)
Inputs per group 2 4 16
Dielectric withstand voltage 500 V AC for 1 minute across DC external terminals and FG
Insulation resistance ≥10 MΩ(across DC external terminals and FG, checked with insulation
resistance tester)
Noise durability
Tested with noise simulator (Peak-to-peak noise voltage: 500 V,
noise width/noise frequency: 1 µs/25 to 60 Hz)
First transient noise compliant to IEC61000-4-4: 2 kV
Protection of degree IP20
Indication of operating status With LEDs RUN, ERR and 1 LED for each input
Number of occupied slices (Width) 1 slot (12.6 mm) 1 slots (12.6 mm) 8 slots (100.8 mm)
Number of occupied
I/O points
Inputs 2 4 16
Outputs 2 4 16
Internal power consumption
(5 V DC) 85 mA 95 mA 120 mA
Weight 0.03 kg 0.03 kg 0.11 kg

2.2.4 Transistor Output Modules (Source Type)
햲The fuse is provided to prevent the external wiring from burning when the output of the out-
put module is shorted. Therefore, the output module may not be protected. The fuse may
not operate if the output module is damaged due to other failure than short circuit.
햳A blown fuse is not detected when the external supply power is off.
Specifications
MELSEC ST Series 15
Item ST1Y2-TE2 ST1Y16-TE2 ST1Y2-TPE3 ST1Y16-TPE3
Number of outputs 2 16 2 16
Isolation method Photocoupler
Rated load voltage 24 V DC
Rated allowable voltage 20.4 to 28.8 V, ripple ratio within 5 %
Maximum load current 0.5 A/output
1.0 A/group
0.5 A/output,
4.0 A/group
1.0 A/output,
2.0 A/group
1.0 A/output,
4.0 A/group
Maximum inrush curren 4 A, ≤10 ms 2 A, ≤10 ms
Leakage current at OFF ≤0.1 mA ≤0.3 mA
Maximum voltage drop at ON typ. 0.2 V DC; max. 0.5 V DC
(at a load current of 0.5 A)
typ. 0.15 V DC; max. 0.25 V DC
(at a load current of 1.0 A)
Response time
OFF 씮
ON ≤1 ms ≤0.5 ms
OFF 씮
ON ≤1 ms (with rated and resitive load) ≤1 ms (with rated and resitive load)
Surge suppressor Zener diode
Protection One 4.0 A fuse
(unchangeable)햲One 6.7 A fuse
(unchangeable)햲
Thermal protection and short circuit
protection
After cooling down resp. elimination
of the short circuit the operation will
continue automatically.
Indication of activated protective
function
When a fuse blows, the ERR. LED is
switched on and a signal is output to
the head station.햳
When a protective function is acti-
vated, the ERR. LED is switched on
and a signal is output to the
head station.
Outputs per group 2 16 2 16
Dielectric withstand voltage 500 V AC for 1 minute across DC external terminals and FG
Insulation resistance ≥10 MΩ(across DC external terminals and FG, checked with insulation
resistance tester)
Noise durability
Tested with noise simulator (Peak-to-peak noise voltage: 500 V,
noise width/noise frequency: 1 µs/25 to 60 Hz)
First transient noise compliant to IEC61000-4-4: 2 kV
Protection of degree IP20
Indication of operating status With LEDs RUN, ERR and 1 LED for each output
Number of occupied slices (Width) 1 slot (12.6 mm) 8 slots
(100.8 mm) 1 slots (12.6 mm) 8 slots (100.8 mm)
Number of occupied
I/O points
Inputs 2 16 2 16
Outputs 2 16 2 16
Internal power consumption
(5 V DC), all outputs ON 90 mA 150 mA 95 mA 160 mA
Weight 0.03 kg 0.11 kg 0.03 kg 0.11 kg

2.2.5 Contact Output Module
Specifications
16 MITSUBISHI ELECTRIC
Item ST1Y2-R2
Number of outputs 2
Isolation method Photocoupler
Rated load voltage 24 V DC/
240 V AC
Rated switching current
At 24 V DC: 2 A (resitive load) per output
At 240 V AC: 2 A (cosϕ= 1) per output
4 A max. per group
Minimum switching load 5 V DC (1 mA)
Maximum switching voltage 125 V DC/264 V AC
Response time
OFF 씮
ON ≤10 ms
ON 씮
OFF ≤12 ms
Outputs per group 2
Life of the contacts
Mechanical ≥20 million times
Elektrical
≥100000 times at the rated switching voltage/current load
≥100000 times at 200 V AC, 1,5 A; 240 V AC, 1 A (cosϕ= 0.7)
≥100000 times at 200 V AC, 1 A; 240 V AC, 0.5 A (cosϕ= 0.35)
≥100000 times at 24 V DC, 1 A; 100 V DC, 0.1 A (L/R = 7 ms)
Maximum switching frequency 3600 times/hour
Surge suppressor Not provided
Fuse Not provided
Dielectric withstand voltage 2830 V AC rms for 3 cycles (operation altitude 2000 m)
Insulation resistance ≥10 MΩ(across external terminals and FG,
checked with insulation resistance tester)
Noise durability
Tested with noise simulator (Peak-to-peak noise voltage: 500 V,
noise width/noise frequency: 1 µs/25 to 60 Hz)
First transient noise compliant to IEC61000-4-4: 2 kV
Protection of degree IP20
Indication of operating status With LEDs RUN, ERR and 1 LED for each output
Number of occupied slices (Width) 1 slot (12.6 mm)
Number of occupied
I/O points
Inputs 2
Outputs 2
Max. current consumption (24 V DC) 35 mA (when both relays are switched on)
Internal power consumption
(5 V DC), all outputs ON 90 mA
Weight 0.04 kg

2.2.6 Analog Input Modules
Specifications
MELSEC ST Series 17
Item ST1AD2-V ST1AD2-I
Number of input channels 2 (1 when differential input signals are used)
Input characteristics Single-End or differential connection
Analog input
-10 to +10 V
0 to 10 V
0 to 5 V
1 to 5 V
0 to 20 mA
4 to 20 mA
Input resistance at Single-End 1.0 M⏲125 ⏲
at differential 2.0 M⏲250 ⏲
Resolution 12 bit + sign
Conversion time max. 0.1 ms per channel
Maximum input ±15 V ±30 mA
Total error ±0.2 % (ambient temperature: 20 °C to 30 °C),
±0.4 % (ambient temperature: 0 °C to 20 °C and 30 °C to 55 °C)
Digital output 16 bit
Isolation method The input channels are isolated against the backplane bus by
photocouplers. There is no isolation between the channels.
Dielectric withstand voltage 500 V AC for 1 minute across the external DC terminals and FG
Insulation resistance ≥10 MΩ( (across external DC terminals and FG,
checked with insulation resistance tester)
Noise durability
Tested with noise simulator (Peak-to-peak noise voltage: 500 V,
noise width/noise frequency: 1 µs/25 to 60 Hz)
First transient noise compliant to IEC61000-4-4: 2 kV
Indication of operating status With LEDs RUN and ERR
Number of occupied slices (Width) 1 slot (12.6 mm)
Number of occupied
I/O points
Inputs 2
Outputs 2
Internal power consumption
(5 V DC) 110 mA 110 mA
Weight 0.03 kg

2.2.7 Analog Output Modules
Specifications
18 MITSUBISHI ELECTRIC
Item ST1DA2-V ST1DA1-I
Number of input channels 2 1
Analog output
-10 to +10 V
0 to 10 V
0 to 5 V
1 to 5 V
0 to 20 mA
4 to 20 mA
Resolution 12 bit + sign
Conversion time max. 0.1 ms per channel
Maximum output ±12 V ±21 mA
Total error ±0.2 % (ambient temperature: 20 °C to 30 °C),
±0.4 % (ambient temperature: 0 °C to 20 °C and 30 °C to 55 °C)
Resistance of the connected load > 1 k⏲(-10 to +10 V and 0 to 10 V)
> 500 ⏲(0 to +5 V and 1 to 5 V) < 500 ⏲
Isolation method The output channels are isolated against the backplane bus by
photocouplers. There is no isolation between the channels.
Dielectric withstand voltage 500 V AC for 1 minute across the external DC terminals and FG
Insulation resistance ≥10 MΩ( (across external DC terminals and FG,
checked with insulation resistance tester)
Noise durability
Tested with noise simulator (Peak-to-peak noise voltage: 500 V,
noise width/noise frequency: 1 µs/25 to 60 Hz)
First transient noise compliant to IEC61000-4-4: 2 kV
Indication of operating status With LEDs RUN and ERR
Number of occupied slices (Width) 1 slot (12.6 mm)
Number of occupied
I/O points
Inputs 2
Outputs 2
Internal power consumption
(5 V DC) 95 mA 95 mA
Weight 0.03 kg

3 Description of the Modules
3.1 Head Station
3.1.1 Overview
Description of the Modules
MELSEC ST Series 19
MITSUBISHI
STATION
ST1H-PB
ON
RS-232C
RELEASE
RESET
PROFIBUS I/F
+-
RUN M 1
ERR. M 0
REL.
DIA SYN.
BF FRE.
80
S
T
A
T
I
O
N
N
O
40
20
10
8
4
2
1
쐃







쐅
Number Meaning Description
쐃LEDs The LEDs show the operating status of the head station. (refer to the
next page)
쐇Switches for setting the station
number
These switches are used to set the station number and to activate the
self-diagnostics.
Range for the station number: 0 to 99 (factory setting: 0)
Selection of self-diagnostics: 150
Refer to chapter 3.1.3 for a detailed description.
쐋RS232 interface
For diagnostics and configuration a personal computer with the
software GX Configurator DP installed (version 6.0 or later) is con-
nected with this Mini-DIN socket.
쐏Buttons
("-", "+" and "RELEASE") Used to make online module change and to reset the head station..
쐄PROFIBUS/DP interface Connects the PROFIBUS/DP cable to the head module.
쐂Display plate Write the station number of the head station on this plate
쐆Base module connector Connects the next module (always a power distribution module) to the
right of the head station.
쐊Lock lever To remove the head station from the DIN rail, a screwdriver is inserted
in this lever from the front of the module and then pulled downward.
쐎DIN rail mounting groove Mounts the head station to the DIN rail.
쐅FG contact Grounding metal spring on the back of the head station.
FG of all mounted modules ist connected via the conductive DIN rail.

3.1.2 LEDs of the Head Station
Description of the Modules
20 MITSUBISHI ELECTRIC
RUN M 1
ERR. M 0
REL.
DIA SYN.
BF FRE.
LED LED
status Meaning
RUN
ON Normally operating
Flickering
쎲Self-diagnostics are being executed
쎲Forced output test mode is being executed
OFF
쎲The external power is off.
쎲A watchdog timer error has been occured.
ERR.
ON A error occured in the head station or in a slice module.
Flickering
쎲Communication error
쎲The station number has been changed after the head station was powered on.
OFF Normally operating (no error)
REL.
ON During online module change the settings of the selected slice module were saved and the
module can now be remounted.
Flickering After changing a slice module the settings are loaded to the new module.
OFF Online module change has been completed or is not selected.
DIA
ON Extended diagnostic information being sent to master station
Flickering Self-diagnostics of head module being executed.
OFF No extended diagnostic information.
BF
ON PROFIBUS/DP data communication is stopped.
OFF PROFIBUS/DP data communication normal
M1
—
The LEDs M0 and M1 indicate the maximum input/output points setting status of the head
module:
M0
SYN.
ON SYNC mode is activated.
OFF Normally operating
FRE.
ON FREEZE mode is activated.
OFF Normally operating
Maximum I/O
points
LED status
M1 M0
32 OFF OFF
64 OFF ON
128 ON OFF
256 ON ON