Wavetronix SMARTSENSOR 105 Guia do Utilizador descarregar pdf (Página 41)

40 CHAPTER 3  CONTACT CLOSURE COMMUNICATION

NEMA TS2, 2070 and other advanced trac cabinet systems usually allow software pro-

gramming of the detector card channel outputs to trac phases via a channel-to-phase

mapping grid in the controller menu. Figure 3.9 illustrates how the detector channels 1 to

16 of a NEMA TS-2 rack can be assigned to the standard eight phases using four Click

114 cards. e rack card slots are numbered across the top and the controller’s detection

channels are represented by the gray labels C1–C16.

↓

C10

↓

C11

↓

C12

↓

C13

↓

C14

↓

C15

↓

C16

↓

Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6 Slot 7 Slot 8

Figure 3.12 – NEMA TS-2 Type 1 Rack Channel to Trac Phase Example

In Figure 3.9, four channels are used from each SmartSensor Matrix. In this example,

channel 1 from the rst sensor is mapped to trac phase 1 (left-turn phase on main street).

Channels 2, 3 and 4 from the rst sensor are mapped to trac phase 6. is represents a

case where detections from three through-movement lanes are brought in separately. is

type of lane-by-lane detection can be benecial in some situations. Wavetronix typically

recommends the use of 4-channel cards because it oers greater exibility of signaling

contact closures.

Note

With NEMA TS1 and other legacy systems, the programming is often done via a

wiring panel on the side of the controller cabinet. With wired systems, you will need

to verify that the wiring on the detector programming panel provides the proper

mapping from the rack channel outputs to the controller input wires dedicated for

ф1–ф8 detector calls.

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