Omron EJ1 User Manual

22
Wiring Terminals Section 2-2
Event Inputs Connect event inputs across terminals A4 and A6 for the TC2 and terminals
A1 and A6 for the HFU.
• The inflow current is approximately 4 mA.
• Use event inputs under the following conditions:
Communications • For communications with the host, connect communications across termi-
nals B7 and B8 or terminals A7 to A9 on the HFU or connect across ter-
minals 1 and 2 or terminals 6 and 7 on the EDU.
Note • If there are problems with communications noise performance when using
the port A connector, connect 110 to 125
Ω of terminating resistance
across terminals 1 and 2 of port A on the EDU.
Contact inputs ON: 1 kΩ max., OFF: 100 kΩ min.
Non-contact
inputs
ON: Residual voltage: 1.5 V max., OFF: Leakage current: 0.1 mA
max.
A1
A2
A3
EV4
EV3
A4
A5
A6
EV2
EV1
A1
A2
A3
EV4
EV3
A4
A5
A6
EV2
EV1
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
HFU
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
TC2
TC2
HFU
Non-contact inputs
Contact inputs
+
+
−
+
+
−
B7
B8
RS-485 RS-232C
DO NOT USE
RS-422RS-422
1
2
6
7
HFU
A7
A8
A9
SD
RD
SG
B1
B2
B3
B4
B5
B6
B7
B8
B9
A1
A2
A3
A4
A5
A6
A7
A8
A9
HFU
1
2
3
4
5
6
7
8
9
EDU EDU
Port C communications
RS-485 port A
communications
RS-485 port B
communications
B (+)
A (−)
B (+)
A (−)
B (+)
A (−)
RDB (+)
RDA (−)
SDB (+)
SDA (−)

Omron EJ1 Specifications

General

Brand	Omron
Model	EJ1
Category	Temperature Controller
Language	English