Specifications
ST900 Family General Handbook
667/HB/32900/000 Issue 12 Page 63 of 265
3.14.8 Audible Supplies
The ELV Audible Driver Module derives the power to drive the Audible sounders
directly from the green drive of the LSLS card.
Audible sounders used must operate correctly over the voltage range 10 to 24V DC.
The audible units recommended and supplied by STC, which meet this requirement,
are: Highland Electronics type SC628P (was Sonalert Mallory SC628P),
Roxborough type SPCI535A4 and Askari (Tone 22 – variable volume)…
ELV Audible: 667/4/04785/000
3.14.9 ELV Tactile Units
The following tactile units are recommended.
667/7/17390/048
Combined motor and drive module. No enable input. No fault output
667/7/17390/148
Separate motor and drive module. Enable input. No fault output
(note
1)
667/1/17390/248
Combined motor and drive module. Enable input. Fault output
BIC B0302
Combined motor and drive module. No enable input. Fault Output
Note 1
The CU/TU100-48 tactile is not recommended for new installations – use the ITE220
instead.
Where green lamp monitoring is not required, the tactile is driven directly from the
pedestrian green drive.
Where green lamp monitoring is required, the tactiles must be driven from the green
output of a separate pedestrian phase configured to run in parallel with the usual
pedestrian phase.
A number of tactiles may be connected in parallel to each LSLS green output. See
section 3.14.3 “LSLS Output Capability” on page 57.
Tactiles without enable input will run for the entire period that the green drive is on.
For ‘parallel pedestrian phases’, i.e. pedestrian phases that appear at ROW
concurrently with vehicular phases, the pedestrian phases may remain at green for
some time. It is acceptable that Tactile Units are left powered and running in this
state; they do not need to be switched off. However, it is recommended that the
‘terminate after minimum green’ option is considered since this will normally mean
that the longer pedestrian clearance periods have finished before the usually
shorter vehicle-to-vehicle intergreen times finish allowing the new stage to start
earlier.
If it is required that the Tactile Units without enable input are switched OFF while
the pedestrian green drive is still ON, (e.g. during a flashing green man period) then