Omron E5CN User Manual

29
Wiring Terminals Section 2-2
• Control output 1 (voltage output for driving SSR) and control output 2
(voltage output for driving SSR) are not isolated. For the E5AN/EN, how-
ever, the internal circuits are functionally isolated.
• Long-life relay outputs use semiconductors for switching when closing
and opening the circuit, thereby reducing chattering and arcing and
improving durability. However, if high levels of noise or surge are imposed
between the output terminals, short-circuit faults may occasionally occur.
If the output becomes permanently shorted, there is the danger of fire due
to overheating of the heater. Design safety into the system, including
measures to prevent excessive temperature rise and spreading of fire.
• Take countermeasures such as installing a surge absorber. As an addi-
tional safety measure, provide error detection in the control loop. (Use the
Loop Burnout Alarm (LBA) and HS alarm that are provided for the E5@N.)
Select a surge absorber that satisfies the following conditions.
Control Output 2 • Outputs are sent from terminals 11, 12, 14, and 15 with the E5CN, and
from pins 14 and 15 with the E5AN/EN. The following diagrams show the
available outputs and their internal equalizing circuits.
• The following table shows the specifications for each output type.
E5CN
E5AN/EN
• Always connect an AC load to a long-life relay output. The output will not
turn OFF if a DC load is connected.
Voltage used Varistor voltage Surge resistance
100 to 120 VAC 240 to 270 V 1,000 A min.
200 to 240 VAC 440 to 470 V
1
2
Long-life
relay output
Varistor
Varistor
Inductive
load
+
v
L
+
v
L
+
v
L
E5AN/EN
Relay Voltage (for driving SSR)
GND
Voltage (for driving SSR) Voltage (for driving SSR)
E5CN
or
GND
GND
14
15 15
14
14
15
11
12
Output type Specifications
Voltage (for driv-
ing SSR)
PNP type, 12 VDC ±15%, 21 mA (with short-circuit protec-
tion)
Output type Specifications
Long-life relay
(using a triac)
250 VAC, 3 A (resistive load), electrical durability: 1,000,000
operations
Voltage (for driv-
ing SSR)
PNP type, 12 VDC +15%, 21 mA (with short-circuit protec-
tion)

Omron E5CN Specifications

General

Communication	RS-485 (optional)
Mounting	Panel Mount
Control Method	ON/OFF
Input Type	Thermocouple, RTD
Supply Voltage	100 to 240 VAC
Output Type	Relay, Voltage (for driving SSR), Current
Display Type	7-segment LED
Size	48 x 48 mm
Control Output	Relay, Voltage (for driving SSR), Current
Alarm Output	1 or 2 outputs
Dimensions	48 x 48 x 78 mm
Ambient Operating Temperature	-10 to 55°C
Protection Rating	IP66