Siemens ST950 Plus+ - Page 40

ST950 Plus+ User Manual
ST950 Plus+ User Manual
Page 40 of 176
667/HE/53000/000
Issue 2
Unrestricted
Off
Not under UTC control, pulses on indicate receipt of messages
BSY – Busy (red)
Flashes to indicate the system is busy performing an operation that must not be interrupted, for example
start up, upgrade, USB "memory stick" style interface is busy. Do not remove USB device or switch off the
controller while this LED is flashing.
BEHIND HANDSET CONNECTOR
The pair of multicolour LEDs behind the handset connector are as shown below (viewed from the
front of the CPU Card).
The function of each LED is described below.
SEC – SEC Status
Green flash, long on, short off
Awaiting start request from Primary
Green flash, equal on and off
Normal operation
Green flash, short on, long off
Shutdown
Red
SEC requested controller shutdown
FF – Fail Flash Status (not used for Plus
+
)
Green flash, equal on and off
Normal operation
3.8.3 Connector Pinouts
Connectors 5 and 8 are fitted with long latches that are suitable for use with Berg housings and
individual wire connections. The four connectors that may require user wiring are detailed below:
Location
Pin
Function
Top
1
Not Used (because +5V on connector 8)
2
Not Used (because +5V on connector 8)
3
Signals on/off switch signal input
4
Signals on/off switch return (0V)
5
Cabinet Alarm LED Drive + +5V via 150R resistor
6
Cabinet Alarm LED Drive - MOSFET open drain output
7
Door Switch signal
SEC FF