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EJ1

Modular Temperature Controller

EJ1

Implement a Multi-Point Control System Easily with Space Saving and Wire Saving by Connecting Modules

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
output
Functions Com-
muni-
cations
func-
tions
Input
type
Ter-
minal
Model
Heat-
er
burn-
out
alarm
E-
vent
in-
puts
Basic
Unit
(tem-
perature
control)
*1
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
con-
nection
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
End
Unit
*1
24 VDC None None None Tran-
sistor
output:
2 points
(sinking)
None Port A
or B:
RS-485
Con-
nector:
Port A
No input 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, E54-CT1L, E54-CT3 or E54-CT3L)
      separately.
Note: Products for the EtherCAT master are also available. Ask your OMRON sales representative for details.

Refer to the following manual for precautionary information and other information necessary to use the EJ1:
EJ1 Modular Temperature Controllers 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
5.8 dia. E54-CT1L
12.0 dia. E54-CT3
12.0 dia. E54-CT3L

Note: If UL certification is required, be sure to purchase the E54-CT []L (with lead wire) for use. Note that the E54-CT[]
         (without lead wire) cannot be used if UL certification is required.

G3ZA Connecting Cable

Cable length Model
5 m EJ1C-CBLA050

Rail Mounting Equipment

Name Model
DIN Track PFP-100N
PFP-50N

CX-Thermo Support Software

Model
EST2-2C-MV4

USB-Serial Conversion Cable

Model
E58-CIFQ1