Phase A, B & c:
Green LED indicators—one per phase. Green is good.
Extinguished green LED indicates loss of protection. Every suppression
element in this SPD is monitored. N-G suppression element monitoring
is logic-connected to Phase A.
Service leD (red):
LED illuminates in the event of problems. This
indicator is logic-connected to the Phase LEDs. Should a Phase LED
go out the Service LED will illuminate and the Audible Alarm will
sound.
Test:
Tests red Service LED and Audible Alarm, and changes state
of Dry Contacts.
Alarm Silence:
turns Audible Alarm off. (Alarm is deactivated when
the Silence LED is illuminated.)
Surge counter count:
(if equipped) Increments optional surge
counter by one (+1)
Surge counter Reset:
(if equipped) Resets optional surge counter
to zero (0)
Operation
Figure 8: Horizontal Display
(Shown with Surge Counter)
Figure 9: Vertical Display
(Shown with Surge Counter)
Diagnostic Display Panel
All indicators and controls are located on the diagnostic panel. The
diagnostic panel is located on the front of the SPD enclosure or behind
the door on certain optional enclosures. Each phase features a Green
LED indicator. Green LEDs indicate correct operation.
If an inoperative condition were to occur,
the built-in audible alarm
will sound and the red
Service
LED will illuminate. This indicates
that the unit needs evaluation by a qualified electrician or technician.
Until a qualified person evaluates the unit, press
Alarm Silence
to silence the alarm. (The LED above
Alarm Silence
illuminates
when the alarm is deactivated. Normal operation occurs with the
Alarm Silence
LED extinguished.) The red Service LED will remain
illuminated even though the Audible Alarm has been silenced.
Test
tests the red Service LED, the Audible Alarm, and changes the state
of Dry Contacts (if equipped).
If LEDs are illuminated in a manner that suggests contradictory
information, there may be an internal logic problem and the unit
needs replaced. If none of the LEDS are illuminated, the unit may not
be installed correctly. For troubleshooting assistance, please contact
Siemens TPS Tech Support at 888.333.3545.
Surge Counter Option
The surge counter registers the number of transient overvoltages on
all L-N and L-G modes since the counter was last reset. The counter
is inductively coupled from each mode of protection. It increments
upon significant current change in a short time period (large di/dt).
The surge counter includes
Test
and
Reset
buttons on the touchpad
display. Pressing
Test
adds one count. Pressing
Reset
clears the
counter’s memory and sets the display to zero.
The counter includes an Eprom memory chip to store the surge count
in the event of a power loss. The Eprom requires no maintenance
giving it an advantage over replaceable batteries. The surge counter
display will be blank if all power is lost to the SPD but will retain the
last count shown on the display once power is returned.
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