3
www.etna.com.tr
2. General Specifications
• 0 - 25A measurement range with internal current transformer (ETR-DT)
• 10 - 300A measurement range with external current transformer (ETR-HT)
• Password protection against unauthorized interventions
• User-friendly, easy-to-use menu
• 3-digit / 7-segment LED display
• 8-bit microprocessor-based design
• Operating frequency: 16Mhz
• Operating voltage: 220V 50Hz AC
• Operating temperature: -10 … +50°C
• Net relay weight: 150g
• Protection class: IP20
• 7 configurable parameters
• Measuring current and monitoring on LED display
• On and Error status LEDs
• On and Error dry contact relay outlets
• Adjustable low and high current limit values
• Adjustable delay time based on low and high current protection
• Adjustable maximum number of switches allowed per hour
• Enabling/disabling low and high current automatic reset programs
• Monitoring all error codes on LED display
• Tracking old error codes via error history menu
3. Front Panel Description
• Up / Down Buttons:
Used to navigate in the menu on LED display and to increase/decrease the
numerical values. Moreover, the device can be manually reset by pressing and holding 'Up/
Down' buttons simultaneously for 2 seconds.
• Set Button:
Used to access the menu and save the adjusted parameters.
• On LED:
Green LED lights up when ETNA electronic thermal relay is on or “on” relay is activated.
• Error LED:
Red LED lights up along with an error code on LED display when one of the activated
programs such as Low Current, High Current, Number of Switches is triggered. After the failure,
if there is an active automatic reset program for low/high current failure and the electronic relay
receives the 'start' command, red LED flashes to indicate that the error will be reset automatically
and the electronic motor will start after the set delay time. If there is no active automatic reset
program, red LED continuously lights up until the error is reset manually. If there an active
automatic reset program but the electronic relay does not receive the 'start' command, red LED
continuously lights up until the end of the period defined in the automatic reset program. The
error is reset automatically at the end of this period and red error LED is turned off, waiting in
standby until the 'start' command is received. While the error LED is on, the 'error' relay remains
active.
4. Maintenance
Disconnect the power before maintenance and use the required personal protective
equipment.
• Etna electronic thermal relay must be checked for any loose electrical connections.
• Ensure there is no abrasion, puncture or color change resulting from heating in the electrical
cables.
