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ERC3 Gateway Unit
First Step Guide First Edition
Thank you for purchasing our product.
Make sure to read the Safety Guide and detailed Instruction Manual (CD/DVD) included with the product in addition to
this First Step Guide to ensure correct use.
This Instruction Manual is original.
• Using or copying all or part of this Inst ruction Manual without permission is prohibited.
• The company names, names of products and trademarks of each company shown in the sentences are registered
trademarks.
• DeviceNet and CompoNet are a registered mark of ODVA.
• CC-Link is a registered trademark of Mitsubishi Electric Corporation.
• PROFIBUS is a registered trademark of PROFIBUS Association.
• MECHATROLINK is a registered trademark of MECHATROLINK Members Association.
• EtherCAT® is a registered mark of Beckoff Automation GmbH.
• EtherNet/IP is a trademark used under the license of ODVA.
Product Check
This product is comprised of the following parts if it is of standard configuration.
If you find any fault in the contained model or any missing parts, contact us or our distributor.
1. Parts
No.
Part Name Model Remarks
1 Gateway Unit Main Body
Refer to “How to read the model plate”, “How to
read the model No.”
Accessories
2 Power Connector
FMCD1.5/8-ST-3.5
(Supplier : PHOENIX CONTACT)
• Emergency Stop
Recommended cable
size
0.5mm
2
(AWG20)
• Power Supply
Recommended cable
size
1.25 to 0.5mm
2
(AWG16 to 20)
3
CC-Link Connector
(For CC-Link Type)
MSTB2.5/5-STF-5.08 AU
(Supplier : PHOENIX CONTACT)
Terminal Resistance
(130Ω1/2W, 110Ω1/2W)
enclosed one unit each
4
DeviceNet Connector
(For DeviceNet Type)
SMSTB2.5/5-ST-5.08AU
(Supplier : PHOENIX CONTACT)
Prepare a terminal
resistor separately if this
controller is to be
allocated at the terminal.
5 Absolute Battery Box (Option) EGW-ABB (Battery AB-7)
For Simple Absolute
Type
6
First Step Guide
7
Instruction Manual (DVD)
8
Safety Guide
2. Teaching Tool (Please purchase separately)
A teaching tool such as PC software is necessary when performing the setup for position setting, parameter setting, etc.
that can only be done on the teaching tool.
Please prepare either of the following teaching tools.
No. Part Name Model
1
PC Software
(Includes RS232C Exchange Adapter + Peripheral Communication Cable)
RCM-101-MW
2
PC Software
(Includes USB Exchange Adapter + USB Cable + Peripheral
Communication Cable)
RCM-101-USB
3
Teaching Pendant (Touch Panel Teaching) CON-PTA
4
Teaching Pendant (Touch Panel Teaching with deadman switch) CON-PDA
5
Teaching Pendant
(Touch Panel Teaching with deadman switch + TP Adapter (RCB-LB-TG))
CON-PGA
3. Instruction manuals related to this product, which are contained in the instruction manual (DVD).
No. Name Manual No.
1 ERC3 Gateway Unit Instruction Manual ME0302
2 ERC3 Actuator with Integrated Controller Instruction Manual ME0297
3
PC Software RCM-101-MW/RCM-101-USB Instruction Manual ME0155
4
Touch Panel Teaching CON-PTA/PDA/PGA Instruction Manual ME0295
4. How to read the model plate
5. How to read controller model code
• Gateway unit model
RCM – EGW – DV
• Battery box model
EGW – ABB – □ - □
Basic Specifications
List of Specifications
Number of Controlled Axes 4 axes MAX.
Control/Motor Power Supply Voltage
24V DC ± 10%
Control Power Capacity MAX. 1A
High output setting valid
(Note 1)
Rated 3.5A/MAX. 4.2A
Load Current
(Per axis)
High output setting invalid
(Note 1)
Rated 1.2A/MAX. 2.0A
Capacity of Brake Release Power Source (Per
axis)
MAX. 0.15A
Control Power Capacity for Simple Absolute Unit MAX. 1.4A
High output setting valid
(Note 1)
2.5W
Heat
Generation
High output setting invalid
(Note 1)
1.9W
In-Rush Current
(Note 2)
MAX. 60A
Transient Power Cutoff Durability 20ms
Motor Control System
Applicable Encoder
Refer to Instruction Manual for the actuator with integrated ERC3 controller
Cable Length Between Actuator and Gateway MAX. 10m (Use the dedicated cable.)
Serial Communication Interface
(SIO Port: Only for teaching)
RS485 1CH (based on Modbus Protocol) Speed 9.6 to 230.4kbps
External Interface
DeviceNet, CC-Link, PROFIBUS-DP, CompoNet,
MECHATROLINK-I/II, EtherNet/IP, EtherCAT
Data Setting and Input PC Software, Touch Panel Teaching, Gateway Parameter Create Tool
Data Retention Memory
Position data and parameters saved in the non-volatile memory of actuator
via Gateway Unit (There is no limitation in number of writing)
Number of Positioning Points
MAX. 512 points (There is no limit for simple direct and direct indication
modes)
(Note) The number of positioning points differs depending on the operation
pattern select by the parameter setting.
LED Display
(Mounted on Front Panel)
1) Gateway status LEDs 6 points
2) Each axis status LEDs 6 points
Electromagnetic Brake Compulsory Release
Can be released with the brake compulsory release switch installed in the
front panel for each axis
Protective functions Overcurrent Protection
Protection Function against Electric Shock Class I basic insulation
Insulation Resistance
500V DC 10MΩ
Cooling Method Natural air-cooling
External Dimensions 35W × 140H × 105D
Weight
Approx. 220g (DeviceNet Type, CC-Link Type, PROFIBUS Type,
CompoNet Type, EtherNet/IP Type)
Approx. 230g (MECHATROLINK Type)
Approx. 240g (EtherCAT Type)
Ambient Air Temperature
0 to 40°C
Ambient Humidity 85%RH or less (non-condensing)
Ambient Environment [Refer to Installation Environment]
Ambient Storage Temperature
-20 to 70°C * 0 to 40°C for absolute battery
Ambient storage humidity 85%RH or less (non-condensing)
Usable Altitude 1000m or lower above sea level
Vibration Durability
Frequency 10 to 57Hz/ Swing width : 0.075mm
Frequency 57 to 150Hz/ Acceleration : 9.8m/s
2
XYZ Each direction Sweep time: 10 min. Number of sweep: 10 times
Shock Resistance 150mm/s2 11ms Semi-sine wave pulse XYZ Each direction 3 times
Environment
Protection Class IP20
Note 1 Refer to the separate booklet Controller Integrated Actuator for the details of the connected
actuator (ERC3).
Note 2 Rush current passes for about 50μs after the power is injected.
<Calculation of 24V DC Power Capacity>
For the calculation of 24V DC power capacity, figure out the numbers for (1) to (5) below, and then follow
Step (6).
(1) Control Power Current Consumption : 1A ·················································································1)
(2) Current Consumption of Motor Power Supply:
Sum total of load current + (Number of actuator axes equipped with brake × 0.15A) ················2)
(3) For Simple Absolute Type : 0.2A + (0.3A × Number of axes)····································3)
(4) Current Consumption at Excitation Phase Detection:
Add the inrush current for all connected axes············································································4)
(5) In-Rush Current : 60A················································································5)
(6) Selection of Power Supply:
Usually, the rated current is to be approximately 1.3 times higher than 1) + 2) + 3) above considering
approximately 30% of margin to the load current. However, considering the current of 4) to 5), even
though it is a short time, select a power supply with “peak load corresponding” type or that with enough
capacity. For the current of 4) to 5), it can be avoided from the current consumption occurred at the same
time by the timing for the emergency stop release (motor power-on) and servo-on being changed. In the
case that the capacity margin is not sufficient, voltage might be dropped in a moment. In particular, be
careful of the power unit with the remote sensing function.
(Note) Make short-circuit on 0V side when separate power sources are used for the control power and
motor power.
(Reference) Selection of Power Supply Protection Circuit Breaker
It is recommended that the power supply protection is conducted on the primary side (AC power side) of
the 24V DC power supply unit.
Pay attention to the in-rush current of 24V DC power supply unit and rated cutoff current of the circuit
breaker.
• Rated Breaking Current > Short-circuit Current = Primary Power Supply Capacity/Power Voltage
• (Reference) In-rush Current of IAI Power Supply Unit PS241 = 50 to 60A, 3msec
● Specifications of DeviceNet Interface
Item Specification
DeviceNet2.0
Group 2 Dedicated Server
Communication Protocol
Network-Powered Insulation Node
Baud Rate Automatically follows the master
Communication System Master-Slave System (Polling)
Number of Occupied
Channels
Refer to “3.4.1 PLC Address Construction by each Operation Mode” in the Instruction Manual for
ERC3 Gateway Unit.
Number of Occupied
Nodes
1 Node
Baud Rate Max. Network Length
Total Branch Line
Length
Max. Branch Line
Length
500kbps 100m 39m
250kbps 250m 78m
Communication Cable
Length
(Note 2)
125kbps 500m 156m
6m
Communications Cable Use the dedicated cable.
Connector
(Note 1)
MSTBA2.5/5-G-5.08AU (Manufactured by PHOENIX CONTACT or equivalent)
Consumption Current of
Communication Power
Supply
60mA
Communication Power
Supply
24V DC (Supplied from DeviceNet)
Note 1 The cable-side connector is a standard accessory. (PHOENIX CONTACT SMSTB2.5/5-ST-5.08AU)
Note 2 For T branch communication, refer to the Instruction Manuals for the master unit and programmable controller (PLC)
to be mounted.
● Specifications of CC-Link Interface
Item Specification
Communication Protocol CC-Link ver1.1 or ver2
Station Type Remote Device Station (MAX. four stations occupied)
Baud Rate 10M/5M/2.5M/625k/156kbps
Communication System Broadcast Polling System
Number of Connectable
Stations
Refer to “3.4.1 PLC Address Construction by each Operation Mode” in the Instruction Manual for
ERC3 Gateway Unit.
Baud Rate (bps) 10M 5M 2.5M 625k 156k
Communication Cable
Length
(Note 2)
Total Cable Length (m) 100 160 400 900 1200
Communications Cable Use the dedicated cable.
Connector
(Note 1)
MSTB2.5/5-GF-5.08 AU (Manufactured by PHOENIX CONTACT or equivalent)
Note 1 The cable-side connector is a standard accessory. (PHOENIX CONTACT MSTB2.5/5-STF-5.08 AU)
Note 2 For T branch communication, refer to the Instruction Manuals for the master unit and programmable PLC to be
mounted.
● Specifications of PROFIBUS-DP Interface
Item Specification
Communication Protocol PROFIBUS-DP
Baud Rate Automatically follows the master
Communication System Hybrid System (Master-Slave System or Token Passing System)
Number of Occupied
Stations
Refer to “3.4.1 PLC Address Construction by each Operation Mode” in the Instruction Manual for
ERC3 Gateway Unit.
MAX. Total Network Baud Rate Cable Type
100m 12,000/6,000/3,000kbps
200m 1,500kbps
400m 500kbps
1000m 187.5kbps
Communication Cable
Length
(Note 2)
1200m 9.6/19.2/93.75kbps
Type A Cable
Communications Cable STP cable AWG18
Connector
(Note 1)
9-pin female D-sub Connector
Transmission Path Format Bus/Tree/Star
Note 1 Please prepare a 9-pin male D-sub connector for the cable-end connector.
Note 2 For T branch communication, refer to the Instruction Manuals for the master unit and programmable PLC to be
mounted.
<Series>
<Type>
EGW : Drive cutoff relay mounted
EGWG : Drive cutoff relay not mounted
<Type of Connected Field Network>
DV : DeviceNet Type
CC : CC-Link Type
PR : PROFIBUS-DP Type
CN : CompoNet Type
ML : MECHATROLINK Type
EP : EtherNet/IP Type
EC : EtherCAT Type
Model
Serial number
Warning : Operation of this equipment requires detailed installation and operation instructions which are
provided on the CD/DVD Manual included in the box this device was packaged in. It should be
retained with this device at all times.
A hardcopy of the Manual can be requested by contacting your nearest IAI Sales Office listed at
the back cover of the Instruction Manual or on the First Step Guide.
<Second Unit Gateway Unit >
Number of Connected Axes for Simple Absolute Type
<First Unit Gateway Unit >
Number of Connected Axes for Simple Absolute Type
● Specifications of CompoNet Interface
Item Specification
Communication System CompoNet dedicated protocol
Communication Type Remote I/O communication
Baud Rate Automatically follows the master
Communication Cable Length Follows CompoNet specifications
Slave Type Word-Mixed Slave
Available Node Addresses for Setting 0 to 63 (Setting conducted on controller parameter)
Number of Occupied Channels
Refer to “3.4.1 PLC Address Construction by each Operation Mode” in the
Instruction Manual for ERC3 Gateway Unit.
Communications Cable
(Note 1)
Round Cable (JIS C3306, VCTF2-core)
Flat cable I (with no sheathed)
Flat cable II (sheathed)
Connector (Controller Side) XW7D-PB4-R (Manufactured by OMRON or equivalent)
Note 1 Prepare the communication cable separately.
● Specifications of MECHATROLINK-I/II Interface
Item Specification
Slave Type Intelligent I/O
MECHATROLINK I 4Mbps
Baud Rate
MECHATROLINK II 10Mbps
Max. Transmittable Distance 50m
Min. Distance between Stations 0.5m
Number of occupied Bytes
Refer to “3.4.1 PLC Address Construction by each Operation Mode” in the
Instruction Manual for ERC3 Gateway Unit.
MECHATROLINK I 15 stations
Number of
Connectable Slaves
MECHATROLINK II 30 stations (Repeater is required for connections of more than 17 stations)
Transmission Frequency 1 to 8ms
MECHATROLINK I 17 byte
Data Length
MECHATROLINK II 17/32 byte
Settable Node Address Range 61 to 7F [hex.]
Communications Cable
(Note 1)
Twist Pair Cable with a Shield (characteristic impedance 130Ω)
Connected Connector on Controller Side DUSB-ARB82-T11A-FA (Manufactured by DDK or equivalent)
Note 1 Prepare the communication cable separately.
● Specifications of EtherNet/IP Interface
Item Specification
Communication Protocol IEC61158 (IEEE802.3)
Baud Rate 10BASE-T/100BASE-T (Autonegotiation setting is recommended)
Communication Cable Length
Follows EtherNet/IP specifications (Distance between hub and each node: 100m
max.)
Number of Connection Master Unit
Available Node Addresses for Setting 0.0.0.0 to 255.255.255.255
Communications Cable
(Note 1)
Category 5e or more
(Double shielded cable braided with aluminum foil recommended)
Connector RJ45 Connector × 1p c
Note 1 Prepare a LAN cable separately for the communication cable.
● Specifications of EtherCAT Interface
Item Specification
Communication Protocol IEC61158 type 12
Physical Layer 100Base-TX (IEEE802.3)
Baud Rate Automatically follows the master
Communication Cable Length Follows EtherCAT® specifications (Distance between each node: 100m max.)
Slave Type I/O slave
Available Node Addresses for Setting
0 to 127 (17 to 80: When connected to the master (CJ1W-NC*82) manufactured by
OMRON)
Communications Cable
(Note 1)
Category 5e or more
(Double shielded cable braided with aluminum foil recommended)
Connector RJ45 Connector × 2pcs (Input × 1, Output × 1)
Connect Daisy chain only
Note 1 Prepare a LAN cable separately for the communication cable.
External Dimensions
Gateway Unit Main Bod y
Absolute Battery Box
Installation Environment
This product is capable for use in the environment of pollution degree 2*1 or equivalent.
*1 Pollution Degree 2 : Environment that may cause non-conductive pollution or transient conductive
pollution by frost (IEC60664-1).
1. Installation Environment
Do not use this product in the following environment.
• Location where the surrounding air temperature exceeds the range of 0 to 40°C
• Location where condensation occurs due to abrupt temperature changes
• Location where relative humidity exceeds 85%RH
• Location exposed to corrosive gases or combustible gases
• Location exposed to significant amount of dust, salt or iron powder
• Location subject to direct vibration or impact
• Location exposed to direct sunlight
• Location where the product may come in contact with water, oil or chemical droplets
• Environment that blocks the air vent [Refer to 1.7 Noise Elimination and Mounting Method]
When using the product in any of the locations specified below, provide a sufficient shield.
• Location subject to electrostatic noise
• Location where high electrical or magnetic field is present
• Location with the mains or power lines passing nearby
2. Storage and Preservation Environment
• Storage and preservation environment follows the installation environment. Especially in a long-term storage,
consider to avoid condensation of surrounding air.
Unless specially specified, moisture absorbency protection is not included in the package when the machine is
delivered. In the case that the machine is to be stored in an environment where dew condensation is anticipated, take
the condensation preventive measures from outside of the entire package, or directly after opening the package.
Installation and Noise Elimination
1. Noise Elimination Grounding (Frame Ground)
2. Precautions regarding wiring method
1) Wire is to be twisted for the 24V DC power supply.
2) Separate the signal and encoder lines from the power supply and
power lines.
3. Noise Sources and Elimination
Carry out noise elimination measures for electrical devices on the same
power path and in the same equipment.
The following are examples of measures to eliminate noise sources.
1) AC solenoid valves, magnet switches and relays
[Measure] Install a Surge absorber parallel with the coil.
2) DC solenoid valves, magnet switches and relays
[Measure] Mount the windings and diodes in parallel. Select a diode
built-in type for the DC relay.
4. Cooling Factors and Installation
Design and Build the system considering the size of the controller box, location of the Gateway Unit and cooling factors to
keep the ambient temperature around the Gateway Unit below 40°C.
Pay a special attention to the battery unit since the performance of it would drop both in the low and high temperatures.
Keep it in an environment in the room temperature as much as possible. (Approximately 20°C is the recommended
temperature.)
For the Gateway attachment, affix it on the DIN rail. For the attachment of the battery box, use the 4
attachment holes on each corner of the unit or affix it on the DIN rail.
Rear View
Earth Terminal
Class D grounding (Formerly Class-III grounding :
Grounding resistance at 100Ω or less)
Copper wire: Connect a ground
wire with a diameter of 1.6 mm
(2mm2: AWG 14) or larger.
Connect the ground line
to the FG terminal block
on the controller unit.
Gateway
Unit
φ
5 fixture hole
φ
5 fixture hole
φ
5 fixture hole
DIN rail
Lever for attachment to DIN rail
(5)
36
140
5.9
1.9
2
(3)
105
4
35.4 (Width of 35mm DIN rail)
65 from DIN rail center
Do not share the ground wire with or connect
to other equipment. Ground each controller.
Controller
Other
equipment
Controller
Other
equipment
Other
equipment
Surge absorber
Relay
coil
Relay coil
R
C
+24V 0V
+24V 0V
+-
111
108
59 from DIN rail center
10.5
φ5
φ
5
5
5
(4)
4
123
115
98
20mm
or more
50mm
or more
50mm
or more
30mm
or more
20mm
or more
30mm
or more
20mm
or more
Ensure
enough
space for
wiring.
Absolute Battery Box
Ensure
enough
space for
wiring.
50mm
or more
50mm
or more
100mm
or more
Gateway Unit
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