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NX-ECS[][][]
NX-series SSI Input Unit
![NX-ECS[][][]](/Images/l_3191-25-171606-198x198.jpg)
Synchronous Serial Interface (SSI) to connect external axes to the Sysmac system
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last update: February 6, 2020
General Specification
| Item | Specification | |
|---|---|---|
| Enclosure | Mounted in a panel | |
| Grounding method | Ground to less than 100 Ω | |
| Operating
environment |
Ambient operating
temperature |
0 to 55°C |
| Ambient operating
humidity |
10% to 95% (with no condensation or icing) | |
| Atmosphere | Must be free from corrosive gases. | |
| Ambient storage
temperature |
-25 to 70°C (with no condensation or icing) | |
| Altitude | 2,000 m max. | |
| Pollution degree | Pollution degree 2 or less: Meets IEC 61010-2-201. | |
| Noise immunity | Conforms to IEC61000-4-4, 2 kV (power supply line) | |
| Overvoltage category | Category II: Meets IEC 61010-2-201. | |
| EMC immunity level | Zone B | |
| Vibration resistance | Conforms to IEC 60068-2-6.
5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz, acceleration of 9.8 m/s2, 100 min each in X, Y, and Z directions (10 sweeps of 10 min each = 100 min total) |
|
| Shock resistance | Conforms to IEC 60068-2-27. 147 m/s2, 3 times each in X, Y, and Z directions | |
| Applicable standards * | cULus: Listed (UL508) or Listed (UL 61010-2-201),ANSI/ISA 12.12.01,
EU: EN 61131-2, C-Tick or RCM, KC Registration, NK, LR |
|
* Ask your OMRON representative for the most recent applicable standards for each model.
SSI Input Unit Specifications
SSI Input Unit 1 channel NX-ECS112
| Unit name | SSI Input Unit | Model | NX-ECS112 |
|---|---|---|---|
| Number of channels | 1 channel | Type of external
connections |
Screwless push-in terminal block
(12 terminals) |
| I/O refreshing method | Free-Run refreshing, synchronous I/O refreshing or task period prioritized refreshing *1 | ||
| Indicators |  |
Input signals | External inputs: 2 Data input (D+, D-)
External outputs: 2 Clock output (C+, C-) |
| I/O interface | Synchronized serial interface (SSI) | ||
| Clock output | EIA standard RS-422-A line driver levels | ||
| Data input | EIA standard RS-422-A line receiver levels | ||
| Maximum data length | 32 bits (The single-turn, multi-turn, and status data length can be set.) | ||
| Coding method | No conversion, binary code, or gray code | ||
| Baud Rate | 100 kHz, 200 kHz, 300 kHz, 400 kHz, 500 kHz, 1.0 MHz, 1.5 MHz, or 2.0 MHz | ||
| Dimensions | 12 × 100 × 71 mm
(W × H × D) |
Isolation method | Digital isolator |
| Insulation resistance | 20 MΩ min. between isolated
circuits (at 100 VDC) |
Dielectric
strength |
510 VAC between isolated circuits for
1 minute with leakage current of 5 mA max. |
| I/O power supply
source |
Supplied from the NX bus.
20.4 to 28.8 VDC (24 VDC +20%/-15%) |
Current capacity
of I/O power supply terminals |
IOV: 0.3 A max. per terminal
IOG: 0.3 A max. per terminal |
| NX Unit power
consumption |
• Connected to a CPU Unit
1.20 W max. • Connected to a Commu- nications Coupler Unit 0.85 W max. |
Current
consumption from I/O power supply |
20mA |
| Maximum transmission
distance *2 |
Baud Rate | Maximum transmission distance | |
| 100 kHz | 400m | ||
| 200 kHz | 190m | ||
| 300 kHz | 120m | ||
| 400 kHz | 80m | ||
| 500 kHz | 60m | ||
| 1.0 MHz | 25m | ||
| 1.5 MHz | 10m | ||
| 2.0 MHz | 5m | ||
| Weight | 65g | ||
| Circuit layout |  |
||
| Installation orientation
and restrictions |
Installation orientation:
• Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions |
||
| Terminal connection
diagram |
 |
||
| Failure detection | None | Protection | None |
*1. The I/O refreshing method is automatically set according to the connected Communications Coupler Unit and CPU
Unit.
Refer to information on the I/O refreshing methods in the W524 manual for the communications cycles for each
model.
*2. The maximum transmission distance for an SSI Input Unit depends on the baud rate due to the delay that can result
from the responsiveness of the connected encoder and cable impedance. The maximum transmission distance is
only a guideline. Review the specifications for the cables and encoders in the system and evaluate the operation of
the equipment before use.
Unit.
Refer to information on the I/O refreshing methods in the W524 manual for the communications cycles for each
model.
*2. The maximum transmission distance for an SSI Input Unit depends on the baud rate due to the delay that can result
from the responsiveness of the connected encoder and cable impedance. The maximum transmission distance is
only a guideline. Review the specifications for the cables and encoders in the system and evaluate the operation of
the equipment before use.
SSI Input Unit 2 channel NX-ECS212
| Unit name | SSI Input Unit | Model | NX-ECS212 |
|---|---|---|---|
| Number of channels | 2 channels | Type of external
connections |
Screwless push-in terminal block
(12 terminals) |
| I/O refreshing method | Free-Run refreshing, synchronous I/O refreshing or task period prioritized refreshing *1 | ||
| Indicators |  |
Input signals | External inputs: 2 Data input (D+, D-)
External outputs: 2 Clock output (C+, C-) |
| I/O interface | Synchronized serial interface (SSI) | ||
| Clock output | EIA standard RS-422-A line driver levels | ||
| Data input | EIA standard RS-422-A line receiver levels | ||
| Maximum data length | 32 bits (The single-turn, multi-turn, and status data length can be set.) | ||
| Coding method | No conversion, binary code, or gray code | ||
| Baud Rate | 100 kHz, 200 kHz, 300 kHz, 400 kHz, 500 kHz, 1.0 MHz, 1.5 MHz, or 2.0 MHz | ||
| Dimensions | 12 × 100 × 71 mm
(W × H × D) |
Isolation method | Digital isolator |
| Insulation resistance | 20 MΩ min. between isolated
circuits (at 100 VDC) |
Dielectric
strength |
510 VAC between isolated circuits for
1 minute with leakage current of 5 mA max. |
| I/O power supply
source |
Supplied from the NX bus.
20.4 to 28.8 VDC (24 VDC +20%/-15%) |
Current capacity
of I/O power supply terminals |
IOV: 0.3 A max. per terminal
IOG: 0.3 A max. per terminal |
| NX Unit power
consumption |
• Connected to a CPU Unit
1.25 W max. • Connected to a Commu- nications Coupler Unit 0.9 W max. |
Current
consumption from I/O power supply |
30mA |
| Maximum transmission
distance *2 |
Baud Rate | Maximum transmission distance | |
| 100 kHz | 400m | ||
| 200 kHz | 190m | ||
| 300 kHz | 120m | ||
| 400 kHz | 80m | ||
| 500 kHz | 60m | ||
| 1.0 MHz | 25m | ||
| 1.5 MHz | 10m | ||
| 2.0 MHz | 5m | ||
| Weight | 65g | ||
| Circuit layout |  |
||
| Installation orientation
and restrictions |
Installation orientation:
• Connected to a CPU Unit: Possible in upright installation. • Connected to a Communications Coupler Unit: Possible in 6 orientations. Restrictions: No restrictions |
||
| Terminal connection
diagram |
 |
||
| Failure detection | None | Protection | None |
*1. The I/O refreshing method is automatically set according to the connected Communications Coupler Unit and CPU
Unit.
Refer to information on the I/O refreshing methods in the W524 manual for the communications cycles for each
model.
*2. The maximum transmission distance for an SSI Input Unit depends on the baud rate due to the delay that can result
from the responsiveness of the connected encoder and cable impedance. The maximum transmission distance is
only a guideline. Review the specifications for the cables and encoders in the system and evaluate the operation of
the equipment before use.
Unit.
Refer to information on the I/O refreshing methods in the W524 manual for the communications cycles for each
model.
*2. The maximum transmission distance for an SSI Input Unit depends on the baud rate due to the delay that can result
from the responsiveness of the connected encoder and cable impedance. The maximum transmission distance is
only a guideline. Review the specifications for the cables and encoders in the system and evaluate the operation of
the equipment before use.
Version Information
Connected to a CPU Unit
Refer to the user's manual for the CPU Unit details on the CPU Units to which NX Units can be connected.
| NX Unit | Corresponding unit versions/versions | ||
|---|---|---|---|
| Model | Unit version | CPU Unit | Sysmac Studio |
| NX-ECS112 | Ver. 1.0 | Ver. 1.13 | Ver. 1.17 |
| Ver. 1.1 | |||
| Ver. 1.2 | |||
| NX-ECS212 | Ver. 1.0 | Ver. 1.13 | Ver. 1.17 |
| Ver. 1.1 | |||
| Ver. 1.2 | |||
Note: Some Units do not have all of the versions given in the above table. If a Unit does not have the specified version, support is provided by the oldest available version after the specified version. Refer to the user’s manuals for the specific Units for the relation between models and versions.
Connected to an EtherCAT Coupler Unit
| NX Unit | Corresponding unit versions/versions | |||
|---|---|---|---|---|
| Model | Unit version | EtherCAT
Coupler Unit |
CPU Unit or Industrial PC | Sysmac Studio |
| NX-ECS112 | Ver. 1.0 | Ver. 1.1 *1 | Ver. 1.06 *1 | Ver. 1.07 |
| Ver. 1.1 | Ver. 1.08 | |||
| Ver. 1.2 | Ver. 1.3 *2*3 | Ver. 1.13 | ||
| NX-ECS212 | Ver. 1.0 | Ver. 1.1 *1 | Ver. 1.06 *1 | Ver. 1.07 |
| Ver. 1.1 | Ver. 1.08 | |||
| Ver. 1.2 | Ver. 1.3 *2*3 | Ver. 1.13 | ||
Note: Some Units do not have all of the versions given in the above table. If a Unit does not have the specified version, support is provided by the oldest available version after the specified version. Refer to the user’s manuals for the specific Units for the relation between models and versions.
*1. You can use the following versions if time stamp refreshing is not used.
*2. To use task period prioritized refreshing, you must use the NX-ECC203.
*3. If you do not use task period prioritized refreshing, you can use EtherCAT Coupler Units which support Position Interface Units with unit version 1.1 or earlier.
*4. If you do not use task period prioritized refreshing, you can use EtherCAT Coupler Units with unit version 1.0.
Connected to an EtherNet/IP Coupler Unit
| Model | Unit
version |
Application with an NJ/NX/NY-series Controller
*1 |
Application with a CS/CJ/CP-series PLC *2 | ||||
|---|---|---|---|---|---|---|---|
| EtherNet/IP
Coupler Unit |
CPU Unit or
Industrial PC |
Sysmac
Studio |
EtherNet/IP
Coupler Unit |
Sysmac
Studio |
NX-IO
Configurator *3 |
||
| NX-ECS112 | Ver. 1.0 | Ver. 1.2 | Ver. 1.14 | Ver. 1.19 | Ver. 1.0 | Ver. 1.10 | Ver. 1.00 |
| Ver. 1.1 | |||||||
| Ver. 1.2 | Ver. 1.13 | ||||||
| NX-ECS212 | Ver. 1.0 | Ver. 1.2 | Ver. 1.14 | Ver. 1.19 | Ver. 1.0 | Ver. 1.10 | Ver. 1.00 |
| Ver. 1.1 | |||||||
| Ver. 1.2 | Ver. 1.13 | ||||||
Note: 1. Some Units do not have all of the versions given in the above table. If a Unit does not have the specified version, support is provided by the oldest available version after the specified version. Refer to the user’s manuals for the specific Units for the relation between models and versions.
Note: 2. You cannot connect the relevant NX Unit or use the relevant NX Unit function if “---” is shown in the corresponding unit versions/versions column.
*1. Refer to the user's manual of the EtherNet/IP Coupler Unit for the unit versions of EtherNet/IP Units corresponding to EtherNet/IP Coupler Units.
*2. Refer to the user's manual of the EtherNet/IP Coupler Unit for the unit versions of CPU Units and EtherNet/IP Units corresponding to EtherNet/IP Coupler Units.
*3. For connection to an EtherNet/IP Coupler Unit with unit version 1.0, connection is supported only for a connection to the peripheral USB port on the EtherNet/IP Coupler Unit. You cannot connect by any other path. If you need to connect by another path, use an EtherNet/IP Coupler Unit with unit version 1.2 or later.
last update: February 6, 2020
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