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External Connections
• A voltage output (control output 1, for driving SSR) is not electrically insulated from the internal circuits. When using a grounding thermocouple,
do not connect any of the control output terminals to ground. If the control output terminals are connected to ground, errors will occur in the
measured temperature values as a result of leakage current.
The voltage output (control output 2, for driving SSR) has basic insulation provided for the internal circuit.
• Consult with your OMRON representative before using the external power supply for the ES1B for any other purpose.
Controllers
• 100 to 240 VAC
• 24 VAC/VDC (no polarity)
Control output 1
Relay output
250 VAC, 5A
(resistive load)
Input power supply
Voltage output
(for driving SSR)
12 VDC, 40 mA
Current output
Control output 1
0 to 20 mA DC
4 to 20 mA DC
Load: 600 Ω max.
Auxiliary output 3
Control output 2
Voltage output
Auxiliary output 2
(for driving SSR)
12 VDC, 21 mA
Long-life relay output
250 VAC, 3 A
Auxiliary output 1
(resistive load)
Auxiliary output
1, 2, 3
Relay outputs
250 VAC, 3 A
(resistive load)
Event Inputs
1
11
EV2
2
12
EV1
3
13
CT1/CT2 Control Output 2
+
4
14
CT1
Control output 2
5
15
-
CT2
DO NOT
6
16
USE
DO NOT
7
17
USE
A
DO NOT
DO NOT
8
18
USE
USE
B
9
19
B
10
20
TC/Pt multi-input
Option Units
E53-EN01
RS-232C
SD
11
RD
12
SG
13
External Power Supply
+
External power supply
12 VDC, 20 mA
-
DO NOT
USE
mA
A heater burnout alarm, heater short alarm,
V
DO NOT
heater overcurrent alarm, or input alarm is
USE
sent to the output to which the alarm 1
Analog input
function is assigned.
E5AN/E5EN
Communications
E53-EN03
E53-AKB
RS-485
Event inputs
B (+)
11
11
EV2
A (−)
12
12
EV
DO NOT USE
13
13
CT1/CT2
27
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