14
Modular Temperature Controller
EJ1
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 an 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.
EJ1N-TC4
EJ1N-TC2
EJ1N-HFU
EJ1C-EDU
Note: 1.
To connect to the G3ZA, separately purchase a G3ZA Connecting Cable (EJ1C-CBLA050) and connect it to the G3ZA connection port (CN1) on the EJ1.
2.
To connect to a computer using the port A connector, use a separately sold E58-CIFQ1 USB-Serial Conversion Cable. The Temperature Controller can be
connected to a computer using USB.
3.
Models with screw-less clamp terminals have terminals A10 and B10, but they are not used. Do not connect anything to them.
12 VDC
12 VDC
OUT4
OUT3
12 VDC
12 VDC
OUT2
OUT1
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
CH4
CN1 G3ZA connection port
Analog
input
Pt
Thermo-
couple
A
B
B
mA
V
CH3
A
B
B
mA
V
CH2
A
B
B
mA
V
CH1
A
B
B
mA
V
Circuit 1
Circuit 1
OUT4
OUT3
B1
B2
B3
B4
B5
B6
12 VDC
Models with
pulse outputs
Models with
linear outputs
12 VDC
B7
B8
B9
CN1
OUT2
OUT1
4 to 20 mA DC/0 to 20 mA
4 to 20 mA DC/0 to 20 mA
OUT2
OUT1
A1
A2
A3
A4
A5
A6
EV2
EV1
A7
A8
A9
CT2
CT1
Circuit 1
∗
Circuit 2
Circuit 3
G3ZA connection port
CH2
A
B
B
mA
V
CH1
A
B
B
mA
V
Analog
input
Pt
Thermo-
couple
Not provided
on models
with linear
output.
Provided only
on models
with pulse
output.
RS-485
RS-422
Not used
Not used
Not used
SUB2
SUB1
RS-232C
RS-422
SD
RD
SG
B1
B2
B3
B4
B5
B6
SUB4
SUB3
B7
B8
B9
B (
+
)
A (
−
)
RDB (
+
)
RDA (
−
)
SDB (
+
)
SDA (
−
)
A1
A2
A3
A4
A5
A6
A7
A8
A9
Circuit 2
Circuit 3
Circuit 2
Circuit 3
Port C
Port C
RS-485 for port C and RS-232C
can be switched.
A separate EJ1 model must be used for
RS-422 communications.
EV2
EV1
EV4
EV3
Input power supply
Port A connector
Port B
Port A
These two ports
cannot be used
at the same time.
Cannot be used
when an HFU is used.
B
A
B
A
24 VDC
SUB2
SUB1
1
2
3
4
5
6
7
8
9
RS-485
RS-485
Circuit 2