• 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.
Supports DeviceNet Communications.
Refer to the “Safety Precautions” on
page 20.
Ordering Information
Temperature Controller
Standard Control Models
Name
Power
supply
voltage
No. of
control
points
Control
outputs
1 and 2
Voltage
output:
2 points
(for SSR
drive)
*2
Control
outputs
3 and 4
Transistor
output: 2 points
(sinking)
Voltage output:
2 points (for
SSR drive)
*2
Transistor
output: 2 points
(sinking)
None
Transistor
output:
4 points
(sinking)
Functions
Auxiliary
output
None
Heater
Event
burnout
inputs
alarm
2
*3
2
Communications
functions
G3ZA connection
port: RS-485
From End Unit:
Port A or port B:
RS-485
Input type
Terminal
Model
Basic Unit
(temperature
control)
*1
V1.2
24 VDC 2
supplied
from the
End Unit
4
None
None
2
Current
output:
2 points
None
2
Thermocouple,
platinum
resistance
thermometer,
analog
voltage, and
analog current
selectable for
each channel.
M3 terminal
Screw-less
clamp
M3 terminal
Screw-less
clamp
M3 terminal
Screw-less
clamp
EJ1N-TC2A-QNHB
EJ1N-TC2B-QNHB
EJ1N-TC4A-QQ
EJ1N-TC4B-QQ
EJ1N-TC2A-CNB
EJ1N-TC2B-CNB
EJ1N-HFUA-NFLK
HFU with
Programless
Communications
*1
None
4
Port C: RS-485 or
RS-232C
selectable.
From End Unit:
Port A: RS-485
Port C: RS-422
From End Unit:
Port A: RS-485
No input
M3 terminal
Screw-less
clamp
EJ1N-HFUB-NFLK
V1.2
M3 terminal
Screw-less
clamp
Screw-less
clamp
EJ1N-HFUA-NFL2
EJ1N-HFUB-NFL2
HFU with
DeviceNet
Communications
*1
End Unit
*1
24 VDC
None
None
DeviceNet
communications
EJ1N-HFUB-DRT
EJ1C-EDUA-NFLK
EJ1C-EDUC-NFLK
Transistor
output:
2 points
(sinking)
None
Port A or B: RS-
485
Connector: Port A
M3 terminal
Detachable
connector
*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.
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.
1
EJ1
Accessories (Order Separately)
Current Transformer (CT)
Diameter
5.8 dia.
12.0 dia.
E54-CT1
E54-CT3
Model
EST2-2C-MV4
CX-Thermo Support Software Ver. 4.1
Model
USB-Serial Conversion Cable
Model
E58-CIFQ1
Model
G3ZA Connecting Cable
Cable length
5m
EJ1C-CBLA050
Rail Mounting Equipment
Name
Mounting Rail
PFP-50N
Model
PFP-100N
Specifications
Basic Unit/EJ1N-TC
Ratings
Item
Power supply voltage
Operating voltage range
Power consumption
Input
*
Input impedance
Voltage output
Transistor output
Control
outputs
Current output
Input points
Event
inputs
Contact input
Non-contact
input
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Number of input and control
Input points: 4, Control points: 4
points
Setting method
Control method
Other functions
Ambient temperature range
Via communications
ON/OFF control or 2-PID (with autotuning, self-tuning)
V1.2
Type
24 VDC
EJ1N-TC4
85% to 110% of rated voltage
5 W max. (at maximum load)
Thermocouple:
ES1B Infrared Thermosensor:
Analog input:
Platinum resistance thermometer:
EJ1N-TC2
4 W max. (at maximum load)
K, J, T, E, L, U, N, R, S, B, W, PLII
10 to 70°C, 60 to 120°C, 115 to 165°C, 140 to 260°C
4 to 20 mA, 0 to 20 mA, 1 to 5 V, 0 to 5 V, 0 to 10 V
Pt100, JPt100
Current input: 150
Ω
max., voltage input: 1 MΩ min.
Output voltage: 12 VDC ±15%, max. load current: 21 mA (PNP models with short-circuit protection circuit)
---
Max. operating voltage: 30 V, max. load current: 100 mA
Current output range: 4 to 20 mA or 0 to 20 mA DC
Load: 500
Ω
max. (including transfer output)
(Resolution: Approx. 2,800 for 4 to 20 mA DC, approx.
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