Modular Temperature Controller EJ10 pages

Modular Temperature Controller

EJ1
CSM_EJ1_DS_E_8_1

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, platinumresistance 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.

Supports DeviceNet Communications.
Refer to the “Safety Precautions” on
page 20.

Ordering Information
Temperature Controller
Standard Control Models
Power
supply
voltage

Name

Basic Unit
(temperature
control) *1

V1.2

No. of
control
points

24 VDC 2
supplied
from the
End Unit
4

2

HFU with
Programless
Communications
*1

None

Control
outputs
1 and 2
Voltage
output:
2 points
(for SSR
drive) *2

Control
outputs
3 and 4
Transistor
output: 2 points
(sinking)

Functions
Auxiliary
output
None

Voltage output:
2 points (for
SSR drive) *2

Current
output:
2 points

None

Communications
functions

2 *3

G3ZA connection
port: RS-485
From End Unit:
Port A or port B:
RS-485

None

Transistor
output: 2 points
(sinking)

None

Heater
Event
burnout
inputs
alarm
2

None

2

Input type

Thermocouple,
platinum
resistance
thermometer,
analog
voltage, and
analog current
selectable for
each channel.

M3 terminal

EJ1N-TC2A-QNHB

Screw-less
clamp

EJ1N-TC2B-QNHB

M3 terminal

EJ1N-TC4A-QQ

Screw-less
clamp

EJ1N-TC4B-QQ

M3 terminal

EJ1N-TC2A-CNB

Transistor
output:
4 points
(sinking)

4

Port C: RS-485 or
RS-232C
selectable.

No input

EJ1N-TC2B-CNB

M3 terminal

EJ1N-HFUA-NFLK

Screw-less
clamp

From End Unit:
Port A: RS-485
Port C: RS-422
From End Unit:
Port A: RS-485

HFU with
DeviceNet
Communications
*1

None

24 VDC

Model

Screw-less
clamp

V1.2

End Unit *1

Terminal

Transistor
output:
2 points
(sinking)

None

None

EJ1N-HFUB-NFLK

M3 terminal

EJ1N-HFUA-NFL2

Screw-less
clamp

EJ1N-HFUB-NFL2

DeviceNet
communications

Screw-less
clamp

Port A or B: RS485
Connector: Port A

M3 terminal

EJ1C-EDUA-NFLK

Detachable
connector

EJ1C-EDUC-NFLK

EJ1N-HFUB-DRT

*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.

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.

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)

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