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FlexPI Product Guide
Operation & alarm outputs
The FlexPI processor operates on 12 - 48 VDC, and consumes 1 W max. It reports alarm and
supervision conditions via two Form C relays. The ALARM relay changes state to indicate a
sensor alarm. The SUPERVISION relay changes state to indicate an enclosure tamper condition,
a cable fault condition, or a processor fault condition. FlexPI includes a user-selectable onboard
audio alarm (beeper) that can be enabled or disabled via the configuration switches. When
enabled, the audio alarm follows the state of the ALARM relay (ALARM relay ON = audio alarm
ON). There is also a N.O. output labelled SONALERT that can be used to activate a remote alarm.
The SONALERT output closes to signal a sensor alarm. The FlexPI processor includes an
enclosure tamper switch and supervises the sensor cable, terminator, and lead-in cable (if used).
The processor also runs diagnostic self-tests to monitor its internal electronic operation.
Calibration
FlexPI calibration and configuration adjustments are made with either onboard switches or
Senstar’s Universal Configuration Module (UCM). The UCM is a Windows-based application that
connects directly to the processor via USB and also provides real time diagnostics and sensor plot
modes.
The processor includes an LED bar graph that indicates the received signal strength (from the
sensor cable). Calibration adjustments include two selectable frequency response bands that
optimize the sensor’s response for the protected surface and the expected type of attack. Other
detection parameters include the Climb Alarm Settings (sustained attack) the Cut Alarm Settings
(number of impacts) Time Window (time in which a sustained attack, or the number of impacts
must occur to generate an alarm) Gain Settings (four discrete signal amplification levels).
FlexPI also includes four miscellaneous controls (MISC.) switches that allow you to select the
frequency response band, setup the bar graph display, enable or disable the audible alarm output,
and select the method of system calibration (onboard switches or UCM).
Sensor cable
The FlexPI sensor cable is a thin diameter (3.6 mm, 0.14 in. O.D. nominal) low profile coaxial
cable that is easily mounted on virtually any surface using commercially available fasteners. The
cable picks up minute vibrations in the surface, and converts the vibrations into electrical signals.
The electrical signals are analyzed by the processor, and when the signals indicate a valid attack,
an alarm is declared. Each processor can monitor the signals from up to 600 m (1970 ft.) of sensor
cable.
The basic FlexPI system requires the following
components:
The following optional components can be added to
the basic system:
• FlexPI processor &
enclosure
• power supply/cable
(Customer supplied)
• Universal Configuration
Module
• non-sensitive lead-in
cable
• sensor cable
• alarm annunciator
(Customer supplied)
• metal conduit
(Customer supplied)
• cable splice kit
• cable terminator kit
• data cable (Customer
supplied)
• enclosure mounting
hardware (Customer
supplied)
• cable mounting
hardware (Customer
supplied)
