14

EJ1

Connection

External Connection

• Functional insulation is applied between the power supply and the I/O sections. If reinforced insulation is required, connect the input and output

terminals to devices without any exposed current-carrying parts or to devices with reinforced insulation suitable for the maximum operating

voltage of the power supply and I/O sections.

• To comply with the standards for noise terminal voltage for class A in EN 61326, install a noise filter (Densei Lamda MXB-1206-33 or the

equivalent) to the DC power line as close as possible to the Temperature Controller.

• Use an SELV power supply that provides overcurrent protection. An SELV circuit is one separated from the power supply with double insulation

or reinforced insulation, that does exceed an output voltage of 30 V r.m.s. and 42.4 V peak or 60 VDC max. The OMROM S8VS Series is

recommended for the power supply.

EJ1N-TC4

EJ1N-HFU

@-NFL@

EJ1C-EDUA

Model with Screw Terminals

EJ1N-TC2

EJ1N-HFUB-DRT

DeviceNet Connector

EJ1C-EDUC

Model with Connector Terminal Block

Note: 1. To connect to the G3ZA, separately purchase a G3ZA Connecting Cable (EJ1C-CBLA050) and connect it to the G3ZA connection port

(CN1) on the EJ1.

2. To connect to a computer using the port A connector, use a separately sold E58-CIFQ1 USB-Serial Conversion Cable. The Temperature

Controller can be connected to a computer using USB.

3. Models with screw-less clamp terminals have terminals A10 and B10, but they are not used. Do not connect anything to them.

12 VDC

12 VDC

OUT4

OUT3

12 VDC

12 VDC

OUT2

OUT1

B1

B2

B3

B4

B5

B6

B7

B8

B9

A1

A2

A3

A4

A5

A6

A7

A8

A9

CH4

CN1 G3ZA connection port

Analog

input

Pt

Thermo-

couple

A

B

B

mA

V

CH3

A

B

B

mA

V

CH2

A

B

B

mA

V

CH1

A

B

B

mA

V

RS-485

RS-422

Not used

Not used

Not used

SUB2

SUB1

RS-232C

RS-422

SD

RD

SG

B1

B2

B3

B4

B5

B6

SUB4

SUB3

B7

B8

B9

B (

+)

A (

−)

RDB (

+)

RDA (

−)

SDB (

+)

SDA (

−)

A1

A2

A3

A4

A5

A6

A7

A8

A9

Port C

Port C

RS-485 for port C and RS-232C can be switched.

A separate EJ1 model must be used for

RS-422 communications.

EV2

EV1

EV4

EV3

Port A connector

B (+)

A (

−)

B (+)

A (

−)

+

−

RS-485

RS-485

1

2

3

4

5

6

7

8

9

Input power supply

24 VDC

Port B

Port A

These two ports

cannot be used at

the same time.

These terminals are

used for distributed

placement of Units

when an HFU is used.

SUB2

SUB1

OUT4

OUT3

B1

B2

B3

B4

B5

B6

12 VDC

Models with

pulse outputs

Models with

linear outputs

12 VDC

B7

B8

B9

CN1

OUT2

OUT1

4 to 20 mA DC/0 to 20 mA

4 to 20 mA DC/0 to 20 mA

OUT2

OUT1

A1

A2

A3

A4

A5

A6

EV2

EV1

A7

A8

A9

CT2

CT1

G3ZA connection port

CH2

A

B

B

mA

V

CH1

A

B

B

mA

V

Analog

input

Pt

Thermo-

couple

Not provided

on models

with linear

output.

Provided only

on models

with pulse

output.

V+

CAN H

CAN L

V

−

Power line

Communications line, high

Shield

Communications line, low

Power line

These two ports

cannot be used at

the same time.

These terminals are

used for distributed

placement of Units

when an HFU is used.

RS-485

RS-485

1

2

3

4

5

6

7

8

9

10

SUB2

SUB1

B (+)

A (

−)

B (+)

A (

−)

+

−

Input power supply

24 VDC

Port A connector

Port B

Port A