Omron E5AC User Manual

4 - 49
4 Basic Operation
E5@C Digital Temperature Controllers User’s Manual (H174)
4-12 Using Heater Burnout (HB) and Heater Short (HS) Alarms (Not
Supported for Position-proportional Models.)
4
4-12-5 Application Examples
(c) V Connecting Lines
Example: Using Two 200-VAC, 2-kW Heaters
The heater burnout current when there is a burnout at the common is as follows:
Heater burnout detection current = (10 + 5) / 2 = 7.5 [A]
The heater burnout current when there is a burnout at the load is as follows:
Heater burnout detection current = (10 + 0) / 2 = 5 [A]
To enable detection in either case, use 7.5 A as the heater burnout detection current.
Normal
Normal Burnout
Current when there is a burnout =
10 A × (1/2) = 5 A
Current when there is a burnout = 0 A
CT
CT
Load
Load
10 A
17.3 A
10 A
200 V
200 V
200 V
Product
To CT input
Product
To CT input
CT
CT
Load
Load
5 A
5 A
200 V
200 V
200 V
Product
To CT input
Product
To CT input
Burnout
CT
CT
Load
Load
10 A
10 A
200 V
200 V
200 V
Product
To CT input
Product
To CT input
Burnou
t

Omron E5AC Specifications

General

Mounting Type	Panel Mount
Sampling Period	50 ms
Protection structure	IP66 (front panel)
Control Method	ON/OFF
Input Type	Thermocouple, RTD
Supply Voltage	100 to 240 VAC
Output Type	Relay, Voltage, Current
Control Output	Relay, voltage, current
Dimensions	96 x 96 mm
Display Type	LCD
Number of Displays	2
Alarm Output	Relay
Communication	RS-485
Ambient Operating Temperature	-10 to 55°C
Ambient Operating Humidity	25% to 85% RH