Siemens TPS3 11 - Manual (Page 9)

Operation
Diagnostic Indication
Phase indicator LEDs (Green)
Each phase is equipped with a Green LED. Should complete loss of surge
protection occur on each phase, the Green LED will extinguish and the
Red Service LED will flash. Every suppression element is monitored.
Note that the Green LED indicators will drop out due to loss of power
or severe under voltage.
Service LED (Red)
Flashes in the event of a problem. The Red Service LED is slaved to
the Green LEDs via logic and will illuminate when any Green LED
extinguishes.
Audible Alarm Option
If equipped with optional Dry Contact and Audible Alarm, these options
are slaved via logic to the Green LEDs. In the event of a problem, the
dry contacts will chage state and the audible alarm will sound. The
audible alarm may be silenced by deenergizing the SPD.
CAUTION V DANGER
Conducting
dielectric and/or
hi-potential testing
will cause internal
damage to the unit.
Hazardous Voltage
will cause severe
injury or death.
Turn off power
before removing
cover.
Do not perform any
tests while installed.
SERVICE
TYPE 1 SURGE PROTECTIVE DEVICE
1-888-333-3545 WWW.SIEMENS.COM
Figure 7: Diagnostic Display
Dry Contact Option
Two sets of Form C dry contacts are included with the Dry Contact
option. Dry Contacts change state during inoperative conditions,
including loss of power. Any status change can be monitored elsewhere
via Dry Contacts.
A Terminal Block includes two sets of Normally Open (N.O.) and
Normally Closed (N.C.) contacts. Both sets of contacts operate the
same. This is shown in Figure 8.
A typical application using a Normally Closed configuration would
connect to one set of the N.C. and Common terminals. During an
inoperative condition, the SPDs dry contact would change state from
normally closed to open. We generally suggest the Normally Closed
configuration because it will detect a wiring defect, such as cut wire(s),
where N.O. will not.
Please note:
Dry Contacts are designed for low voltage or control signals only.
Maximum switching current is 5A
Maximum switching voltage is 240V DC or AC.
Higher energy applications require additional relay implementation
outside the SPD.
An optional Remote Monitor accessory is available to provide visual
and audible status. The Remote Monitor will consume one of the two
sets of Dry Contacts.
Remote Monitor Accessory Option
A Remote Monitor is available for remote annunciation. It requires a
standalone 120V power source (wall plug transformer) and uses one
set of Form C dry contacts. The Remote Monitor can be configured
to monitor several Siemens TPS3 SPDs simultaneously. Installation is
detailed in a separate document. Contact factory as appropriate.
Figure 8: Dry Contact Pin Configuration
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