Datasheet
NX series I/O 3
Communication coupler unit
EtherCAT communication coupler unit
Item Specifications
Model NX-ECC203
Number of connectable NX units 63 units max.
*1
*1. Refer to the NX-safety control units user’s manual (Cat.No. Z930) for the number of safety control units that can be connected.
Communications protocol EtherCAT protocol
Send/receive PDO data sizes Input: 1024 bytes max. (including input data, status and unused areas)
Output: 1024 bytes max. (including output data and unused areas)
Mailbox data size Input: 256 bytes / Output: 256 bytes
Mailbox Emergency messages and SDO requests
Refreshing methods
*2
*2. This function was added or improved for a version upgrade. Refer to the NX-series EtherCAT coupler unit user’s manual (Cat.No. W519) for information on version
upgrades.
Free-run refreshing
Synchronous I/O refreshing
Time Stamp refreshing
Task period prioritized refreshing
Node address setting range When the settable node address range for the built-in EtherCAT port is 1 to 512
*3
:
Set on switches: 1 to 199
Set with Sysmac Studio: 1 to 512
*3. The range of node addresses that can be set depends on the model of the built-in EtherCAT port. For the node address ranges that can be set for a built-in Ether-
CAT port, refer to the user's manual for the built-in EtherCAT port on the connected CPU unit or Industrial PC.
When the settable node address range for the built-in EtherCAT port is 1 to 192
*3.
:
Set on switches: 1 to 192
Set with Sysmac Studio: 1 to 192
I/O jitter performance Inputs: 1s max. / Outputs: 1s max.
Communications cycle in DC mode 125 to 10,000 s
*4
*5 *6
*4. This depends on the specifications of the EtherCAT master. For example, the values are as follows when you are connected to the built-in EtherCAT port on an
NJ5-series CPU unit: 500 s, 1,000 s, 2,000 s and 4,000 s. For the specifications of the built-in EtherCAT port, refer to the user's manual for the built-in Ether-
CAT port on the connected CPU unit or the Industrial PC.
*5. This depends on the unit configuration.
*6. There are restrictions in the communications cycles that you can set for some of the NX Units. If you use any of those NX units, set a communications cycle that will
satisfy the specifications for the refresh cycles that can be executed by the NX unit. Refer to the appendix of the NX-series data reference manual (Cat. No.
W525-E1-07 or later) to see if there are restrictions on any specific NX units. For information on the communications cycles that you can set, refer to the user’s
manuals for the NX units.
Unit power supply Voltage 24 VDC (20.4 to 28.8 VDC)
Capacity 10 W max.
Efficiency 70%
Isolation method No isolation between NX unit power supply and unit power supply terminals
Unwired terminal current capacity 4 A max.
I/O power supply Voltage 5 to 24 VDC (4.5 to 28.8 VDC)
*7
*7. Use an output voltage that is appropriate for the I/O circuits of the NX units and the connected external devices.
Maximum I/O current 10 A
Terminal current capacity 10 A max.
Unit power consumption 1.25 W max.
Current consumption from I/O power supply 10 mA max. (for 24 VDC)
Dielectric strength 510 VAC for 1 min, leakage current: 5 mA max. (between isolated circuits)
Insulation resistance 100 VDC, 20 M min. (between isolated circuits)
External connection terminals Connector for EtherCAT communications:
RJ45 × 2 (shielded)
IN/OUT: EtherCAT input/output data
Screwless push-in terminal (8 terminals)
For power supply unit, I/O power supply and grounding. Removable.
Peripheral USB port for Sysmac Studio connection:
Physical layer: USB 2.0-compliant, B-type connector
Transmission distance: 5 m max.
Terminal block type Screwless push-in terminal
8 terminals (A + B with FG)
Dimensions (W x H x D) 46 × 100 × 71 mm
Weight 170 g max.
Terminal wiring
NX-ECC203
IOV
UG
UV
IOG
UV
UG
A1
A8
B1
B8
UV
UV
UG
UG
IOV
IOG
DIN track contact plate
UNIT PWR LED
I/O PWR LED
Circuit layout
NX-ECC203
Peripheral
USB port
IN communications
connector
OUT communications
connector
Terminal
block
Internal
circuits
Non-isolated
power supply
circuits
NX unit
power supply +
NX unit
power supply –
I/O power supply +
I/O power supply –
NX bus
connector
Unit power supply
(24 VDC)
I/O power supply
(5 to 24 VDC)
Ground to 100 Ω
or less
Through-wiring
for unwired
terminals.