ETA Systems ETA-ECS3 Manuel D’Utilisation

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Specifications are subject to change without notice.
1601 Jack McKay Blvd. • Ennis, Texas 75119  U.S.A.
Telephone: 800-321-6699 • Fax: 800-996-3821
ETA-ECS3 
Power Sequencer & Conditioner
6.  AC Mains Function Display 
7.   AC Mains Voltage Display
– This display will illuminate when
the AC Mains power cord is plugged into an AC source.  
Note: the display has a 1.5% tolerance.
Note: If the voltage 
displayed is not between 107 - 128VAC, refer to the 
troubleshooting section and item 12 below.
8. 
 Sequence  Indicator – There are three green LED  
active sequence outlet indicators labeled “SEQ 1”,  
“SEQ 2”, and “SEQ 3”. Their sequence timing is set  
for 3 seconds between Sequence 1-2 & 2-3 while in “On”
mode, and Sequence 3-2 & 2-1 during “Off”  
mode. When the LED is illuminated, the corresponding AC 
outlet on the rear of the chassis will be active or “Live”.
Turned “On”, the order the trigger sequence is “SEQ 1, SEQ
2, SEQ 3”. Turned “Off”, it is “SEQ 3, SEQ 2, SEQ 1”.
9.   AC Mains Wiring Polarity Fault Indicator – The Red LED
will illuminate if the AC Mains Power Cord is plugged into an 
AC Mains outlet that is wired incorrectly, such as when the AC Hot and the AC Neutral are wired backwards.
10.   AC Mains Breaker Indicator – This Red LED will illuminate if the maximum unit current draw is exceeded. The breaker rating is
15A, but will handle higher peaks for a short period of time. The LED will illuminate until the AC Mains Breaker is reset.
11.   AC Fault Indicator – Although the Dual Clamping Suppression (DCS) circuit virtually assures protection from most transient
voltage spikes and surges nature has a way of occasionally creating electrical forces that are beyond the capabilities of any device 
to absorb without some degree of damage. In the rare instance that this occurs and the DCS circuit has been damaged, the Red 
“AC Fault” LED indicator will illuminate and an internal buzzer will sound. The ETA-ECS3 will also shut off permanently until the
unit is repaired. 
Note: If the AC Fault LED is illuminating it is important to have all equipment that was connected to that AC 
Mains Line inspected for proper operation.
12.   AC Mains Abnormal Voltage Indicator – This LED flashes under several AC Mains fault situations that are listed below. Normal
operating voltages for AC Mains voltage is considered to be between 108VAC and 125VAC. Any voltages exceeding those 
parameters are considered a risk to damage equipment plugged into the ETA-ECS3.
 
 High AC Line Mains – The Abnormal Voltage LED will flash between 128VAC – 132VAC indicating possible damage may occur
to equipment due to high AC Mains voltage. The ETA-ECS3 outlets will remain active but the LED will stay flashing even if the 
voltage returns to a normal operating range. To stop the LED from flashing the system activation switch must be cycled “Off”.
Note: It is recommended prior to proceeding to have the AC Mains inspected by an electrician.
 
 Low AC Line Mains – The Abnormal Voltage LED will flash between 101VAC – 107VAC indicating possible damage may occur
to equipment due to low AC Mains voltage. The ETA-ECS3 outlets will remain active but the LED will stay flashing even if the 
voltage returns to a normal operating range. To stop the LED from flashing the System Activation Switch must be cycled “Off”.
Note: It is recommended prior to proceeding to have the AC Mains inspected by an electrician.
 
 Extreme High AC Line Mains – If the AC Mains reach 132VAC, the EVS (Extreme Voltage Shutdown) circuit will be triggered to
shut off the AC outlets while activating the Abnormal Voltage LED. The Red LED will illuminate steady and the AC Mains Voltage 
Meter will flash 
OL (Overload), indicating possible damage may occur to the equipment plugged into the ETA-ECS3 due to high 
AC Mains voltage. The ETA-ECS3 outlets will remain off until the System Activation Switch is cycled “Off”.  
Note: It is recommended prior to proceeding to have the AC Mains inspected by an electrician.
 
 Extreme Low AC Line Mains – If the AC Mains lowers to 100VAC, the EVS (Extreme Voltage Shutdown) circuit will be triggered
to shut off the AC outlets while activating the Abnormal Voltage LED. The Red LED will illuminate steady and the AC Mains 
Voltage Meter will flash 
OL (Overload), indicating possible damage may occur to the equipment plugged into the  
ETA-ECS3 due to low AC Mains voltage. The ETA-ECS3 outlets will remain off until the System Activation Switch is cycled “Off”.
Note: It is recommended prior to proceeding to have the AC Mains inspected by an electrician.
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