6

EJ1

Ratings

* Auxiliary outputs can be allocated using digital output allocations.

Characteristics

Communications Characteristics: Port C

*1. The communications method can be switched between RS-485 and RS-232C. A separate model must be used for RS-422 communications.

*2. For the number of Units that can be connected, refer to “Connection Precautions” on page 11.

HFU Unit/EJ1

N-HFU@-NFL@

Power supply voltage

24 VDC

Operating voltage range

85% to 110% of rated voltage

Power consumption

2 W max. (at maximum load)

Auxiliary outputs

*

Outputs

4

Transistor outputs

Max. operating voltage: 30 VDC, Max. load current: 50 mA

Event inputs

Inputs

4

Contact inputs

ON: 1 k

Ω max., OFF: 100 kΩ min.

Transistor inputs

ON: residual voltage of 1.5 max., OFF: leakage current of 0.1 mA max.

Outflow current: Approx. 4 mA (per contact)

Programless

connection

Downloading

(EJ1 reads data from a PLC)

Number of parameters that can be set: 1200

Uploading

(EJ1 writes data to a PLC)

Number of parameters that can be set: 1200

Applicable PLCs

OMRON: CS/CJ/NJ Series

Mitsubishi Electric: MELSEC-An/AnS/FX3UC Series

Mitsubishi Electric: MELSEC-Q/QnA/QnAS Series

Ambient temperature range

Operating:

−10°C to 55°C

Storage:

−25°C to 65°C (with no icing or condensation)

Ambient humidity range

Operating: 25% to 85% (with no condensation)

Insulation resistance

20 M

Ω min. (at 500 VDC)

Dielectric strength

600 VAC, 50/60 Hz for 1 min between current-carrying terminals of different polarity

Vibration resistance

10 to 55 Hz, 20 m/s2 for 2 hours each in X, Y, and Z directions

Shock resistance

150 m/s2, 3 times each in 6 directions

Weight

160 g

Degree of protection

Rear case: IP20, Terminal section: IP00

Memory protection

EEPROM (non-volatile memory) (number of writes: 100,000)

Standards

Approved standards

UL61010C-1, CSA C22.2 No.1010-1

EMC Directive

Refer to page 3.

Transmission path connection

RS-485/RS-422: Multi-point, RS-232C: Point-to-point

*1

Communications method

RS-485/RS-422 (two-wire, half duplex), RS-232C

Synchronization method

Start-stop synchronization

Communications protocol

• OMRON PLC protocol (Connectable PLCs: SYSMAC CS/CJ/CP Series)

• AnA/AnU CPU common commands (Connectable PLCs: MELSEC-An/AnS/FX3UC Series)

• MC protocol (form 5) (Connectable PLCs: MELSEC-Q/QnA/QnAS Series)

Baud rate

9.6, 19.2, 38.4, 57.6, or 115.2 kbps

Transmission code

Binary

Data bit length

8 bits

Stop bit length

1 bit

Error detection

Depends on protocol selected for the programless communications protocol.

Flow control

None

Interface

RS-485, RS-422, RS-232C

*1

Retry function

Available

Communications response wait time

0 to 99 ms (default: 5 ms)

Number of Basic Units that can be connected in

parallel

*2

32 Units (model numbers with TC4:128 channels max., model numbers with TC2:64 channels max.)

Number of HFUs that can be connected

• CS/CJ/NJ-series PLCs: 8 (EJ1-HFU@-NFLK)

• MELEC Q/QnA/QnAS-series PLCs: 8 (EJ1-HFU@-NFL2)

V1.2

V1.2

V1.1

V1.1

V1.1

V1.1