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NOVA’s new System Environmental Monitor (SEM) redefines intelligent
monitoring and control. The new SEM, initially introduced in an
embedded board form factor, enables Eurocard, PC and embedded
board-based chassis to report and control on a real-time basis
internal temperatures, input and output voltages, fan speed and
customer-defined I/O.
The SEM continuously monitors the total scope of the chassis
operating environment. If a factory pre-programmed or user-defined
operating parameter is exceeded, the SEM can take several actions: the
system can be RESET or powered down; an audio alarm can sound; fan
speed can be increased, decreased or turned off; or other user-definable
actions can be taken.
As a web-enabled product, the SEM supports both HTTP and SNMP
protocols, and is compatible with popular web browsers (IE, Firefox
2.0, etc.). To prevent unauthorized access to the SEM, the user must
logon with unique credentials. With “administrator rights” the logon
information can be changed locally or remotely.
Communication with the SEM is accomplished via its onboard Fast
Ethernet port (100 Base-T). Changing its IP is done simply and quickly
via the setup utility, as are the operating parameters the user wishes to
monitor and/or control. Already the SEM is an installed option in chassis
supporting our armed forces. Below are two programs employing the
SEM’s advanced capabilities.
SPECIFICATIONS
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Monitored Inputs |
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| System Voltages: |
± 12 VDC
± 5 VDC
+ 3.3 VDC
- 48 VDC
Eight (8) AC to DC positions
available for other voltages,
programmable by the user |
| System Temperature: |
4 digital sensors with accuracy
<1°C |
| System Fan Speed: |
Speed control for three DC fans
with to 3.5A |
| System Fan Power: |
Separate channel to monitor fan
power supply |
| Additional Inputs: |
≤ 20 additional open collector
inputs |
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Monitored Outputs |
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| Power Supply Inhibit: |
Remote start and restart via
opto-isolated outputs |
| Power Isolation: |
Double pole change over relay |
| Alarm Output: |
Audio alarm and up to seven LEDs |
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Functions Controlled |
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Fan speed
Chassis power supply operation
Alarms and alarm outputs
Security Functions including passwords
Analog relay output |
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Functions Monitored |
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System Voltages: 3 Positive ; 1 Negative
Fan Speed
4 Temperature Sensors
Minimum and Maximum Temperature |
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Ordering Table |
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| 51-100001-100 |
Standard SEM; all current
features included |
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The SEM is a highly customizable product. Features that are not
currently off ered may be available, as is private labeling with your
company’s name appearing in the splash screen. Optionally, your
company’s name may appear on the printed circuit board.
Contact NIS for more information. |
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