Signals-R-Me
Pole mount traffic signal cabinet
The traffic signal pole has two mastarms, the electrical service, Western Systems NEMA TS2-1 stretch M traffic signal cabinet, Alpha Sidemount 6 battery backup, pedestrian indications PTZ camera, two Opticom detectors, and one Polara Navigator APS pedestrian pushbutton.
This intersection includes a Polara 4-wire APS pushbutton system. The 4-wire system does not include the CCU device in the signal cabinet. During design, I found that the Polara CCU2EN device was too large to fit inside the M or stretch M cabinet. The connection harness for the CCU2EN stuck out so far, that the door would not close because the connection harness would conflict with the door switches. The 4-wire system does not allow for Ethernet communications to the APS system. The 4-wire system has a card that resides in the ped head, which has two wires connected to the Don't WALK. The other two wires function as the contact closure to the ped inputs on the cabinet.
A HUGE NOTE. Do not, under any circumstances, connect the 4-wire ped pushbuttons to a CCU2EN. If you connect the 4-wire pushbuttons to the CCU2EN, the CCU2EN will damage a resistor in the 4-wire button, rendering them useless. Found out the hard way on that.
Pole mount traffic signal cabinet
The traffic signal pole has two mastarms, the electrical service, Western Systems NEMA TS2-1 stretch M traffic signal cabinet, Alpha Sidemount 6 battery backup, pedestrian indications PTZ camera, two Opticom detectors, and one Polara Navigator APS pedestrian pushbutton.
This intersection includes a Polara 4-wire APS pushbutton system. The 4-wire system does not include the CCU device in the signal cabinet. During design, I found that the Polara CCU2EN device was too large to fit inside the M or stretch M cabinet. The connection harness for the CCU2EN stuck out so far, that the door would not close because the connection harness would conflict with the door switches. The 4-wire system does not allow for Ethernet communications to the APS system. The 4-wire system has a card that resides in the ped head, which has two wires connected to the Don't WALK. The other two wires function as the contact closure to the ped inputs on the cabinet.
A HUGE NOTE. Do not, under any circumstances, connect the 4-wire ped pushbuttons to a CCU2EN. If you connect the 4-wire pushbuttons to the CCU2EN, the CCU2EN will damage a resistor in the 4-wire button, rendering them useless. Found out the hard way on that.