Omron, NX-ECS Series

• SSI clock frequency up to 2 MHz

• High-speed remote I/O control with communications cycle as fast as 125 μs*1

• Free-run refreshing, synchronous I/O refreshing, or task period prioritized refreshing*2 with the NX1P2 CPU unit or EtherCAT coupler unit

• The MC function modules of the NJ/NX/NY5 controllers allows the encoder to be used as a motion axis

• Choice of SSI coding Methods (No conversion, binary code, or gray code)

• Time Stamping

• Multi-turn and single-turn encoders supported

• Data Refresh Status (Data refreshing can be checked on the host controller.)

• Maximum connecting SSI cable length: 400 m

• Connect to the CJ PLC using the EtherNet/IP^TM bus coupler

*1. When using the NX-EC01[][] together with the NX701-[][][][] and NX-ECC203.
*2. Task Period Prioritized refreshing is available when the NX-ECC203 is used together.

Sysmac is a trademark or registered trademark of OMRON corporation in Japan and other countries for OMRON factory automation products.
EtherCAT® is a registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany. EtherNet/IP™ is a trademark of ODVA.
other company names and product names in this document are the trademarks or registered trademarks of their respective companies.

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: Conforms to JIS B3502 and IEC 61131-2.
	Noise immunity	Conforms to IEC61000-4-4, 2 kV (power supply line)
	Overvoltage category	Category II: Conforms to JIS B3502 and IEC 61131-2.
	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

Maximum transmission distance *2	Baud Rate	Maximum transmission distance
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
	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.

SSI Input unit 2 channel NX-ECS212

Maximum transmission distance *2	Baud Rate	Maximum transmission distance
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
	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

Version information

Connected to a CPU unit

Refer to the user's manual for the CPU unit for details on the CPU units to which NX units can be connected.

NX unit		Corresponding versions *
Model	unit version	CPU unit	Sysmac Studio
NX-ECS112	Ver.1.0	Ver.1.13 or later	Ver.1.17 or higher
	Ver.1.1
	Ver.1.2
NX-ECS212	Ver.1.0
	Ver.1.1
	Ver.1.2

* 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 a Communications Coupler unit

NX unit		*Corresponding versions 1**
Model	unit version	EtherCAT			EtherNet/IP
Model	unit version	Communications Coupler unit	NJ/NX-series CPU unit or NY-series Industrial PC	Sysmac Studio	Commu- nications Coupler unit	Sysmac Studio
NX-ECS112	Ver.1.0	Ver.1.1 or later *2	Ver.1.06 or later *2	Ver.1.07 or higher	Ver.1.0 or later	Ver.1.10 or higher
	Ver.1.1	Ver.1.1 or later *2		Ver.1.08 or higher		Ver.1.10 or higher
	Ver.1.2	Ver.1.3 or later 3 4		Ver.1.13 or higher		Ver.1.13 or higher
NX-ECS212	Ver.1.0	Ver.1.1 or later *2		Ver.1.07 or higher		Ver.1.10 or higher
	Ver.1.1	Ver.1.1 or later *2		Ver.1.08 or higher		Ver.1.10 or higher
	Ver.1.2	Ver.1.3 or later 3 4		Ver.1.13 or higher		Ver.1.13 or higher

*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.
*2. You can use the following versions if time stamp refreshing is not used. EtherCAT Coupler unit: Version 1.0 NJ-series CPU unit: Version 1.05
*3. To use task period prioritized refreshing, you must use the NX-ECC203.
*4. 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.

(Unit: mm)

Screwless Clamping Terminal Block Type

12 mm Width

TITLE	DOCUMENT TYPE	SIZE
NX-EC0 / ECS / PG0	Catalog	6840 KB