Siemens ST950 Plus+ User Manual page 40

ST950 Plus+ User Manual
Off
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).
SEC FF
The function of each LED is described below.
SEC – SEC Status
Green flash, long on, short off
Green flash, equal on and off
Green flash, short on, long off
Red
FF – Fail Flash Status (not used for Plus
Green flash, equal on and off
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
Top 1
2
3
4
5
6
7
ST950 Plus+ User Manual
Not under UTC control, pulses on indicate receipt of messages
Awaiting start request from Primary
Normal operation
Shutdown
SEC requested controller shutdown
)
+
Normal operation
Function
Not Used (because +5V on connector 8)
Not Used (because +5V on connector 8)
Signals on/off switch signal input
Signals on/off switch return (0V)
Cabinet Alarm LED Drive + +5V via 150R resistor
Cabinet Alarm LED Drive -
Door Switch signal
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667/HE/53000/000
MOSFET open drain output
Unrestricted
Issue 2