Structure And Functions; Nk8237 Hardware; Front Panel - Siemens NK8237 MP4.70 Installation Function & Configuration Commissioning Safety Regulations

Structure and functions

3

NK8237 hardware

3 Structure and functions
3.1
3.1.1
14
Building Technologies
Fire Safety & Security Products
NK8237 hardware
The NK8237 is composed of an electronic board installed in a compact and robust
plastic box.
NK8237 gateway unit

Front panel

The front panel houses 9 LED's.
Left Side LED's
The five LED's on the left side are, from top to bottom:
Power (LED green)
Power (hardware – controlled).
Vital functions (LED green)
Software vitality:
Blinking (1 flash)
: core software running.

Blinking (2 flash)
: core software running and logging function active.

Tamper (LED bicolor)
Unit tamper:
Red
means tamper alarm (hardware controlled).

Green
means tamper disabled (from management station).

Download (LED red)
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.

Diagnostics (LED yellow)
Internal interface diagnostics:
Off
: status OK.

Blinking (fast)
: booting operating system after restart.

.
A6V10403182_a_en
30.09.2014