CSM_EJ1_DS_E_12_4

1

Modular Temperature Controller

EJ1

In-panel Temperature Controller with Flexible

Modular Design and Wide Integration with Host

Devices

• The compact modular structure enables construction of temperature

systems optimally suited to the application.

• Connection can be made to a Programmable Controller without any

programming required, reducing the number of steps required in ladder

programming design.

• One fully universal-input Unit includes a thermocouple, platinum-resistance

thermometer, and analog input for easy selection and reduced inventory

requirements.

• Connect directly to the G3ZA Multi-channel Power Controller using

optimum cycle control for high-accuracy regulation with minimal noise.

• Autotuning (AT) can be used for independent heating/cooling PID control.

• Self-tuning (ST) can be used to calculate the PID constants with the step

response method.

• Up to 16 Temperature Controllers can be connected to a single DeviceNet

Communications Unit.

Ordering Information

Temperature Controller

Standard Control Models

*1. An End Unit is always required for connection to a Basic Unit or an HFU. An HFU cannot operate without a Basic Unit. External communications cannot be performed when using a Basic

Unit only.

*2. For heating/cooling control applications, control outputs 3 and 4 on the 2-point models are used for the cooling or heating control outputs.

On the 4-point models, heating/cooling control is performed for the two input points.

*3. When using the heater burnout alarm, purchase a Current Transformer (E54-CT1 or E54-CT3) separately.

Note: Products for the EtherCAT master are also available. Ask your OMRON sales representative for details.

Functional Upgrades

Refer to page 17 for details.

Upgrade functions are supported by the indicated version ("V1.1" or "V1.2") or a higher version of the software.

Supports DeviceNet Communications.

Refer to the “Safety Precautions” on

page 20.

Name

Power

supply

voltage

No. of

control

points

Control

outputs

1 and 2

Control

outputs

3 and 4

Auxiliary

output

Functions

Communications

functions

Input type

Terminal

Model

Heater

burnout

alarm

Event

inputs

Basic Unit

(temperature

control)

*1

24 VDC

supplied

from the

End Unit

2

Voltage

output:

2 points

(for SSR

drive)

*2

Transistor

output: 2 points

(sinking)

None

2

*3

2

G3ZA connection

port: RS-485

From End Unit:

Port A or port B:

RS-485

Thermocouple,

platinum

resistance

thermometer,

analog

voltage, and

analog current

selectable for

each channel.

M3 terminal

EJ1N-TC2A-QNHB

Screw-less

clamp

EJ1N-TC2B-QNHB

4

Voltage output:

2 points (for

SSR drive)

*2

None

None

M3 terminal

EJ1N-TC4A-QQ

Screw-less

clamp

EJ1N-TC4B-QQ

2Current

output:

2 points

Transistor

output: 2 points

(sinking)

2M3 terminal

EJ1N-TC2A-CNB

Screw-less

clamp

EJ1N-TC2B-CNB

HFU with

Programless

Communications

*1

None

None

None

Transistor

output:

4 points

(sinking)

4

Port C: RS-485 or

RS-232C

selectable.

From End Unit:

Port A: RS-485

No input

M3 terminal

EJ1N-HFUA-NFLK

Screw-less

clamp

EJ1N-HFUB-NFLK

Port C: RS-422

From End Unit:

Port A: RS-485

M3 terminal

EJ1N-HFUA-NFL2

Screw-less

clamp

EJ1N-HFUB-NFL2

HFU with

DeviceNet

Communications

*1

None

None

DeviceNet

communications

Screw-less

clamp

EJ1N-HFUB-DRT

End Unit

*1

24 VDC

Transistor

output:

2 points

(sinking)

None

Port A or B: RS-

485

Connector: Port A

M3 terminal

EJ1C-EDUA-NFLK

Detachable

connector

EJ1C-EDUC-NFLK

V1.2

V1.2

Refer to the following manual for precautionary information and other information necessary to use the EJ1:

EJ1 Modular Temperature Controller User’s Manual (Cat. No. H142)

EtherCAT is registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.