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EJ1

Modular Temperature Controller

EJ1

In-panel Temperature Controller with Flexible Modular Design and Wide Integration with Host Devices

Temperature Controller

Standard Control Models

Name Power
supply
volt-
age
No. of
con-
trol
points
Con-
trol
out-
puts 1
and 2
Con-
trol
out-
puts 3
and 4
Aux-
iliary
out-
put
Functions Commu-
nications
functions
Input
type
Ter-
minal
Model
Heater
burn-
out
alarm
E-
vent
in-
puts
Basic
Unit
(tem-
perature
control)
*1
[V1.2]
24 VDC
supplied
from
the End
Unit
2 Voltage
output:
2
points
(for
SSR
drive)
*2
Tran-
sistor
output:
2 points
(sinking)
None 2
*3
2 G3ZA
connection
port:
RS-485
From End
Unit: Port A
or port B:
RS-485
Thermo-
couple,
platinum
resist-
ance
ther-
mometer,
analog
voltage,
and
analog
current
selecta-
ble 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
2 Current
output:
2
points
Tran-
sistor
output:
2 points
(sinking)
2 M3
terminal
EJ1N-TC2A-CNB
Screw-
less
clamp
EJ1N-TC2B-CNB
HFU with
Pro-
gramless
Commu-
nications
*1
[V1.2]
None None None Tran-
sistor
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
Commu-
nications
*1
None None DeviceNet
communi-
cations
Screw-
less
clamp
EJ1N-HFUB-DRT
End Unit
*1
24 VDC Tran-
sistor
output:
2 points
(sinking)
None Port A or B:
RS-485
Connector:
Port A
M3
terminal
EJ1C-EDUA-NFLK
De-
tachable
con-
nector
EJ1C-EDUC-NFLK

*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 Catalog 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)


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

Accessories (Order Separately)

Current Transformer (CT)

Diameter Model
5.8 dia. E54-CT1
12.0 dia. E54-CT3

G3ZA Connecting Cable

Cable length Model
5 m EJ1C-CBLA050

Rail Mounting Equipment

Name Model
Mounting Rail PFP-100N
PFP-50N

CX-Thermo Support Software Ver. 4.1

Model
EST2-2C-MV4

USB-Serial Conversion Cable

Model
E58-CIFQ1