ST950S Plus+ Installation and Commissioning Manual
Figure 19. CPU Secondary LED
The function of each LED is described below.
SEC – SEC Status
Table 17. SEC - SEC Status
LED Pattern
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
+
)
Table 18. FF - Fail Flash Status
LED Pattern
Status
Green flash, equal on and off
Normal operation
3.9.3. Links, Switches and Fuses
Before the controller is switched on, the switches and links on the CPU Card must be checked to
ensure they are set correctly. Also, the firmware should be checked to ensure that the correct version
(as specified on the IC4 printout) is loaded.
Link Functions
PL18 - Enable Remote Reboot. This link must be in place to enable the remote reboot function. If the
user does not wish this function to be available, the link should be removed.
PL17 - RTC Backup capacitors - This link should always be in place.
Switch Functions
S1 – Level 3 push button – used to gain level 3 access on the controller.
S2 – Program push button used to invoke the programming sequence to update firmware and/or
controller configuration. This button is only active when the lamps are switched off.
S3 – Enable Fail Flash switch; not used on Plus+.
S4 – Reset EFC push button. This push button is reserved for engineering use and should NOT be
pressed.
3.9.4. 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:
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