SSCC APPLICATIONS & PROGRAMMING GUIDELINES
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4-20
SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
CAUTION
WHEN USING TEMPERATURE COMPENSATED BATTERY
CHARGERS:
EXCEEDING 16.5 VDC ON CROSSING CONTROLLER POWER
TERMINALS MAY RESULT IN INTERMITTENT FALSE ACTIVATIONS.
EXCEEDING 18 VDC WILL RESULT IN CONTROLLER DAMAGE.
OBSERVE CORRECT POLARITY WHEN CONNECTING BATTERY
POWER TO THE B AND N CONTACTS ON THE CROSSING
CONTROLLER CONNECTOR(S). INCORRECT POLARITY WILL
RESULT IN SEVERE DAMAGE TO THE A80405 MODULE(S).
4.5.7 Flash Sync Connections to External Controllers
NOTE
Effective with Revision D of the SSCC IIIi, FLASH SYNC is an isolated
two-wire output. If two Revision D or later SSCC IIIi units in the same
chassis are operated by separate batteries, the FLASH SYNC returns are
connected internally and no additional connection is required.
Revision D SSCC IIIi Modules can be identified by:
“D” located at end of the Part Number / Bar Code tag.
Large metal bracket located on the component side of the module.
When using Revision C SSCC IIIi or earlier, or when external SSCC units
are connected to a master SSCC IIIi and operated from a different
battery, the following wiring must be provided for FLASH SYNC Return:
If two Revision C SSCC IIIi units in the same chassis are operated by
separate batteries, the N pins of the SSCC IIIi power and lamp
connectors must be wired together.
If an external SSCC IIIA, SSCC III PLUS, or SSCC IV is connected to a
master SSCC IIIi:
If the SSCC IIIi is Revision C or earlier, the negative terminals of the
master SSCC IIIi and external SSCC must be wired together.
If the SSCC IIIi is Revision D or later, the SSCC IIIi FLASH SYNC
return (-) must be connected to N on the external SSCC.
The terminology for flash sync control differs between a GCP5000 and an
external SSCC device. The GCP5000 terms Master and Slave SSCC,
are called “Flash Sync Out” and “Flash Sync In” respectively in an
external SSCC (Slave = Flash Sync In).
The SSCC IIIi flash sync connection to an external SSCC is located on the CPU connector.
4.6 External Crossing Controllers
An external crossing controller may be used with the GCP5000 (GCE) to replace the internal
crossing controllers or to supplement the lamp current provided by the internal crossing
controllers. An appropriate crossing controller such as the SSCC IIIA, SSCC III Plus, or SSCC
IV may be used.