Figure 14. ECUTS-16001 Back Exterior
2
3
4
5
1
1. Panel Pneumatic Air Port
2. Rear Cable Entry Brush Panel
3. Removable Rear Panel Door
4. Air Intake and Filter
Power States
Table 5. Power States
Power State
PEP
PDU
Temperature Controller
On
On
On
On
Off
Off
Off
Off
Standby
On
Off
On
EPO
DC Power Only
Off
On
•
On
—A change to this state begins the ECUTS main power on sequence. All PDUs receive AC power and enable outlets to other
instruments.
•
Off
—The ECUTS is entirely disabled with no power passing through the line filter or any internal test rack components.
•
Standby
—AC and DC power is passing out of the PEP and into the thermostat on the EPO panel and the PDU. AC power is not passing
out of the PDU. When the ECUTS is in standby, MAINs power is connected to the PEP and the main breaker on the PEP is in the on
position, but the main power switch on the EPO panel is off.
•
Emergency power off (EPO)
—Pressing the EPO button immediately cuts AC power from the PEP and PDU(s). The ECUTS will power
back on once the EPO button is released unless the main power switch or main breaker are turned off.
The ECUTS enters the emergency power off state automatically if the following conditions occur:
•
The temperature controller on the EPO panel is reading a higher temperature than the programmed shutoff value. The system will
power back on when the over-temperature condition clears.
•
The safety shutoff thermostats have detected unsafe air exit temperature. Refer to
Powering on After Thermal Shutdown
information.
ECUTS-16000/16001 User Manual
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© National Instruments Corporation
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