Omron EJ1N-TC4 Operation Manual page 20

I/O Devices
■ Examples of EJ1-series Temperature Controllers/Output Devices
Input device/sensor
Analog quantities, such as temperature,
flow rate, and concentration
Converters, Digital Panel Meters, Flow Meters,
Infrared Thermosensors, Displacement Sensors
ES1B
Infrared Thermosensor
ES2-HB Humidity Sensor
ES2-THB Temperature/Humidity Sensor
Thermocouple/Platinum
Resistance Thermometer E52
• Concept behind the Number of SSRs That
Can Be Connected in Parallel
(A): The maximum load current for the voltage
output (to drive SSRs) for the Temperature
Controller is 21 mA.
(B): The input impedance for SSRs is 7 mA
(G3NA).
In this case, the number of SSRs that can
be connected in parallel is (A) ÷ (B),
therefore 3.
The maximum load current in the connection
example is 21 mA.
20
Modular Temperature Controller
Temperature controller
Voltage output
terminal
(for driving SSR)
Can be directly
connected.
EJ1
EJ1N-TC2@-QNHB
PWR COM1 PWR COM1
RUN EJ1-TC2 COM2 RUN EJ1-TC2 COM2
ERR COM3 ERR COM3
ALM ALM
SW1 SW1
ON ON
SW2 SW2
Two-channel SSR outputs can be
connected to models with TC2@-
QNHB.
The number of SSRs that can be
connected for each channel is listed
on the right.
EJ1N-TC4
PWR COM1 PWR COM1
RUN EJ1-TC2 COM2 RUN EJ1-TC2 COM2
ERR COM3 ERR COM3
ALM ALM
SW1 SW1
ON ON
SW2 SW2
Four-channel SSR outputs can be
connected to models with TC4.
The number of SSRs that can be
connected for each channel is listed
on the right.
EJ1N-TC2@-CNB
PWR COM1 PWR COM1
RUN EJ1-TC2 COM2 RUN EJ1-TC2 COM2
ERR COM3 ERR COM3
ALM ALM
SW1 SW1
ON ON
SW2 SW2
Two current output channels can be
connected to the TC2@-CNB.
Special Cable
(Communication)
G3ZA
Multi-channel Power Controller
SSR SSR SSR SSR
G3ZA
READY
SD/RD
SW1
OCC
SW2
ERROR
Eight Units max.∗
∗The G3ZA is available with 4 or 8 control
points.
EJ1
SSR
INPUT LOAD
Number of SSRs That Can
G3PC (SSR with failure detection)
be Connected in Parallel
3
Rated input voltage:
12 to 24 VDC
Ultra-compact and slim
model combined with a
heat radiator
240 VAC, 15 A, 25 A, 35 A, or 45 A
480 VAC, 15 A, 25 A, 35 A, or 45 A
3
Rated input voltage:
12 to 24 VDC
Ultra-compact and slim
model combined with a
heat radiator
240, 400, or 480 VAC, 15 A, 25 A, 35 A, or 45 A
2
Rated input voltage:
12 to 24 VDC
Three-phase batch
control combined with
heat radiator
240 VAC, 10 A, 20 A, 40 A, or 60 A
400 or 480 VAC, 20 A, 30 A, or 50 A
Rated input voltage:
3
240 V: 5 to 24 VDC
400/480 V: 12 to 24 VDC
Ultra-compact and slim
model combined with a
heat radiator
240 VAC, 5 A, 10 A, 20 A, 40 A, 75 A, or 90 A
480 VAC, 10 A, 20 A, 40 A, 75 A, or 90 A
3
Rated input voltage:
5 to 24 VDC
Four 480-V
models
Standard model
One 240-V
with screw terminals
model
(75 A/95 A)
1
Rated input voltage:
12 VDC
Compact low-cost
models with quick-
connect terminals
240 or 440 VAC, 75 A or 150 A
4
Rated input voltage:
5 to 24 VDC
For high-power
heater control
2
Load
Heater
Load
power
supply
240 VAC, 20 A
G3PB (Single Phase)
G3PB (Three Phase)
G3PA
G3NA
G3NE
240 VAC, 5 A, 10 A, or 20 A
G3NH
G3PX
Power Controller