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Structure and functions
4
NK8237 hardware
17
Building Technologies
A6V10854379_a_en
CPS Fire Safety
30.11.2017
6
Structure and functions
6.1
NK8237 hardware
The NK8237 is composed of an electronic board installed in a compact and robust
plastic box.
Note: NK8237 units with build state up to 01 are equipped with the NKM8001-A1
mainboard and NK8237 units with build state 10 or higher are equipped with the
NKM8001-A2 mainboard.
NK8237 gateway unit
6.1.1
Front panel
The front panel houses 9 LEDs.
Left Side LEDs
The five LEDs on the left side are from top to bottom:
Power (green LED)
Power (hardware – controlled).
Vital functions (green LED)
Software vitality:
Blinking (1 flash): core software running.
Blinking (2 flashes): core software running and logging function active.
Tamper (bi-color LED)
Unit tamper:
Red means tamper alarm (hardware controlled).
Green means tamper disabled (from management station).
Download (red LED)
Network diagnostics:
Off: status OK.
Blinking (1 flash): missing identification from NS8xxx.
Blinking (2 flashes): not used.
Blinking (3 flashes): FTP channel open (default mode; for switch settings see
Internal DIP Switches.
On: critical/hardware fault.