Rice Lake LaserLight Series, Руководство по установке, Страница: 32 / 46

LaserLight Series
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4.5.1 Dry Contact Wiring
The DIG 0 and DIG 1 pins on the traffic light board (pin 2 and pin 3 on connector J1) have pull up resistors to ensure the
operation of the traffic light can be controlled by switching the DIG 0 or DIG 1 (or both) to ground.
A reset to the LaserLight CPU board sets the D0 and D1 pins on the LaserLight CPU (pins 5 and 6 on J1) to a high
pulled up state therefore, the default state of the traffic light is a stop light (red).
4.5.2 Single Switch Wiring
If a single switch is used for controlling the traffic light, the user must select which two states (out of the four possible) to use.
4.5.3 Two Switch Wiring
If two switches are used for controlling the traffic light it is possible for the user to obtain all combinations of the four possible
states. Both switches with contacts closed give the OFF condition, both switches with contacts open give the STOP condition,
and one switch open and the other closed gives either the Go or Arrow condition.
Connect the wires using the following procedures below.
An example procedure for connecting DIG 1:
1. Disconnect the wire connecting D1 (pin 6 on J1) of the CPU to DIG 1 (pin 3 on J1) of the traffic light pcb at the CPU connector.
2. Solder the wire going to DIG 1 on the traffic light board to the wire going to the switch.
3. Place the wires back into the connector on the CPU board (pin 6 on J1).
4. Connect the other end of the switch wire to one pole of the switch.
5. Connect the remaining switch pole to the digital ground of the indicator (if a common ground between the indicator and
the LaserLight does not exist.
Example: fiber optic communication is used then an additional wire is needed for connecting the switch to the
ground on the LaserLight CPU).
This connection does not harm the CPU board. The digital outputs on the CPU board are designed to be pulled low.
Signal Dig 1 Signal Dig 0 Signal
Stop Open (H) Open (H)
Arrow Open (H) Closed (L)
Go Closed (L) Open (H)
Off Closed (L) Closed (L)
Table 4-4. Traffic Option Wiring
Note
Note