Omron EJ1G Datasheet page 13

Connection
■ External Connection
• Functional insulation is applied between the power supply and the I/O sections. If reinforced insulation is required, connect the input
and output terminals to devices without any exposed current-carrying parts or to devices with reinforced insulation suitable for the
maximum operating voltage of the power supply and I/O sections.
• To comply with the standards for noise terminal voltage for class A in EN 61326, install a noise filter (Densei Lamda MXB-1206-33 or
the equivalent) to the DC power line as close as possible to the Temperature Controller.
• Use a SELV power supply. An SELV circuit is one separated from the power supply with double insulation or reinforced insulation,
that does exceed an output voltage of 30 V r.m.s. and 42.4 V peak or 60 VDC max. The OMROM S8VS Series is recommended for the
power supply.
EJ1G-TC4
OUT2
12 VDC
B1
Circuit 1
OUT1
B2
12 VDC
B3
A
CH2 B4
mA
B
B5
V
B
B6
A
CH1 B7
mA
B
B8
V
B
B9
Analog Pt Thermo-
input couple
EJ1G-HFU
B1
B2
SUB4
SUB3
B3
B4
SUB2 B5
SUB1
B6
RDB B
B7
RDA A
Port C
B8
DO NOT
DO NOT
B9
USE
USE
RS-422
RS-485
RS-485 for port C and RS-232C
can be switched.
Another model must be used for
RS-422 communications.
Note: 1. To connect to the G3ZA, connect a G3ZA Connecting Cable (EJ1C-CBLA050, sold separately) to the G3ZA connection port (CN1) on
the EJ1.
2. To connect to a computer using the port A connector, use an E58-CIFQ1 USB-Serial Conversion Cable (sold separately). The
Temperature Controller can be connected to a computer using USB.
3. Terminals A10 and B10 are not used on models with screw-less clamp terminals. Do not connect anything to these terminals.
OUT4
12 VDC
A1
OUT3
A2
Circuit 1
12 VDC
A3
A
A4 CH4
mA
B
A5
V
B
A6
A
A7
CH3
mA
B
A8
V
B
A9
CN1 G3ZA connection port
A1
Circuit 2
EV4
A2
EV3
A3
A4
Circuit 2
EV2
A5
EV1
A6
SDB
SD
A7
SDA
RD
A8
Port C
SG
A9
DO NOT
USE
RS-232C RS-422
Modular Temperature Controller for Gradient Temperature Control
EJ1G-TC2
OUT2
DC12V
B1
OUT1
B2
DC12V
B3
A
CH2 B4
mA
B
B5
V
B
B6
A
CH1 B7
mA
B
B8
V
B
B9
Analog Pt Thermo-
input couple
EJ1C-EDU
Port A connector
B
1
RS-485
Port A
A 2
3
4
SUB2
SUB1
5
B
6
RS-485
Port B
A
7
8
24 VDC
9
Input power supply
OUT4
A1
Circuit 1
A2 OUT3
Circuit 2
A3
DO NOT USE
A4
DO NOT USE
A5
DO NOT USE
A6
A7
A8 CT2
CT1
A9
CN1 G3ZA connection port
These two ports
cannot be used
at the same time.
Circuit 2
Used for distributed
placement.
EJ1G
13