EJ1

7

Ratings

Characteristics

Communications Characteristics

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

HFU Unit/EJ1N-HFUB-DRT

Power supply voltage

DeviceNet power supply

24 VDC (for internal circuits)

EDU power supply

24 VDC (for RS-485 communications circuits and Temperature Controllers)

Operating voltage

range

DeviceNet power supply

11 to 25 VDC

EDU power supply

20.4 to 26.4 VDC

Power consumption (at maximum load)

1 W max. (at maximum load)

Main functions

Remote I/O communications, explicit message communications, CompoWay/F command feed-through

function, parameter backup function, and configuration registration

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

Vibration resistance

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

Shock resistance

150m/s2 max. 3 times each in 3 axes, 6 directions

Weight

70 g max.

Degree of protection

IP20

Memory protection

EEPROM, 100,000 write operations (backup data)

Standards

Approved standards

UL61010-1, CSA C22.2 No.1010-1

EMC Directive

Refer to page 3.

Communications protocol

Conforms to DeviceNet.

Communications

functions

Remote I/O

communications

Master-slave connections (polling, COS, or cyclic)

Conforms to DeviceNet specifications.

I/O allocation

Input and output data can be allocated freely by user with the Configurator.

Allocations can be made to DeviceNet parameters or Temperature Controller parameters.

Two blocks for IN Area, up to 100 words

One block for OUT Area, up to 100 words (The first word is always allocated to the OUT Enable Bit.)

Message communications

Explicit message communications

CompoWay/F communications commands can be sent (commands are sent in explicit message format).

Connection format

Combination of multidrop and T-branch connections (for trunk and drop lines)

Baud rate

DeviceNet: 500, 250, or 125 kbps, or automatic detection of master baud rate

Communications media

Special 5-wire cable (2 signal lines, 2 power lines, and 1 shield line)

Communications distance

The values in parentheses apply when Thin Cables are used.

Communications power supply

11 to 25 VDC

Maximum number of nodes that can be connected

64 (includes Configurator when used.)

Maximum number of slaves that can be connected

63

Error control

CRC error detection

DeviceNet power supply

Power supplied from DeviceNet communications connector

Applicable Temperature Controllers

EJ1 Series (excluding the EJ1G)

TC4: EJ1N-TC4A-QQ and EJ1N-TC4B-QQ

TC2: EJ1N-TC2A-QNHB, EJ1N-TC2B-QNHB, EJ1N-TC2A-CNB, and EJ1N-TC2B-CNB

Maximum number of Temperature Controllers that

can be connected

*

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

Baud rate

Network length

Drop line length

Total drop line length

500 kbps

100 m max. (100 m max.)

6 m max.

39 m max.

250 kbps

250 m max. (100 m max.)

6 m max.

78 m max.

125 kbps

500 m max. (100 m max.)

6 m max.

156 m max.