OMRON EJ1N-TC2A-QNHB EJ1N-TC2B-QNHB EJ1N-TC4A-QQ EJ1N-TC4B-QQ EJ1N-TC2A-CNB EJ1N-TC2B-CNB EJ1C-EDUA-NFLK EJ1C-EDUC-NFLK Modular Temperature Controller

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