Omron E5EC User Manual

4 Basic Operation
4 - 42
E5@C Digital Temperature Controllers User’s Manual (H174)
 What Is an HS Alarm?
An HS alarm is detected by measuring the heater current with a current transformer (CT) when the
control output is OFF. If the measured heater current is higher than the setting of the HS Alarm
parameter, an alarm is output.
This alarm cannot be used for the cooling control output. With the default settings, the HS alarm is
output on auxiliary output 1. You can use the output assignment parameters to change the output.
You can use an integrated alarm to output an OR of alarms 1 to 4 and the other alarms. For details
on the integrated alarm, refer to 5-9 OR Output of Alarms.
• Checking the Heater Current
1 Press the M Key several times in the Adjustment Level to
display ct1 (Heater Current 1 Value Monitor).
Adjustment Level
2 Check the heater current from the CT input that is used to
detect heater burnout.
The monitoring range is 0.0 to 55.0 A.
• Setting Heater Burnout Detection
1 Press the M Key several times in the Adjustment Level to
display hb1 (Heater Burnout Detection 1).
Adjustment Level
2 Press the U or D Key to set the set value to 2.5
Refer to 4-12-4 Calculating Detection Current Values when you set
the value.
4-12-2 HS Alarm
Control output
(heating)
Power to heater HS alarm output
OFF
Yes (HS alarm) ON
No (normal) OFF
0.0
ct1
Heater Current 1
Value Monitor
0.0
ct1
Heater Burnout
Detection 1
0.0
hb1
2.5
hb1
Temperature sensor
E5@C
SSR
Voltage output (for driving SSR)
CT
Current value
Auxiliary output
(assigned to an HS alarm)
×
HS alarm

Omron E5EC Specifications

General

Brand	Omron
Model	E5EC
Category	Temperature Controller
Language	English