Siemens TC12 Installation, Commissioning And Maintenance Handbook page 94

Number of Current Sensors
Number of phases (include vehicle, green arrow and pedestrian
phases
Number of pedestrian phases with wait indicators
Number of switched sign drives
Number of separately monitored regulatory sign drives
Add one for each monitored load above 4A rms
Subtract one for each wait indicator to be monitored by the same
current sensor as the pedestrian phase
Subtract one for each pedestrian phase to be monitored by the same
current sensor as the opposing vehicle phase
Number of Voltage Sensors
Number of phases (include vehicle, green arrow and pedestrian
phases
Number of pedestrian phases with wait indicators
Number of switched sign drives.
Subtract one for each phase green state which coincides with a green
confirm reply available from the controller
Note: This is only applicable where Red Lamp Monitoring is not
required.
Subtract one for each wait indicator state that coincides with a wait
confirm reply available from the controller
Add one for each vehicle phase with Red Lamp Monitoring
For export lamp monitoring only:
Add one where the controller can enter flashing red/amber mode
Note: Not needed if a signal indicating flash mode active is available
from the controller.
Add one for each flashing amber signal group
666/HE/43100/000
TC12 Installation, Commissioning & Maintenance Handbook
Total current sensors
Total voltage sensors
Page 84
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Issue 10