Powering The Phase Selector; Powering On 120 Vac 60 Hz; Powering On 24Vdc - OPTICOM 764 Installation Manual

4 Powering the Phase Selector

The phase selector operates on either 120VAC 60Hz or 24 VDC. The phase selector then powers the rest of
the Opticom intersection equipment. Powering the phase selector requires one of the following inputs:
If the phase selector detects both 24 VDC and 120 VAC, it will use 120 VAC
See figure 5-20 for locations of pins A, B, L, M, N
Current Draw:
•
When powered by 120VAC 60Hz, the Model 764 phase selector current draw is 80 mA
o Add 100 mA for the radio/GPS unit
o Add 15 mA for each 711 detector
o Add 30 mA for each 721or 722 detector
o Add 15 mA for the 768 AIP
•
When powered by 24 VDC, the Model 764 phase selector current draw is 110 mA
o Add 500 mA for the radio/GPS unit
o Add 15 mA for each 711 detector
o Add 30 mA for each 721or 722 detector
o Add 40 mA for the 768 AIP

4.1 Powering on 120 VAC 60 Hz

Plug the phase selector into a card rack or slot that will provide 120 VAC on pins M and N.
Voltage range is 89-135 VAC 57-63Hz.

4.2 Powering on 24VDC

Plug the phase selector into a card rack or slot that will provide 24 VDC on pins A and B.
Voltage range is 22-26 VDC.
It is also possible to power the phase selector on 24 VDC by providing power through the front DC
connector. This connector is only used to provide power if neither 120 VAC nor 24 VDC is available on the
card edge connector. The label on the removable 24 VDC connector shows the proper polarity. This
connector is an input only it does not provide a 24VDC output.
Intersection Equipment Installation Instructions
Pin
A
B
L
M
N
Table 4-1 Phase Selector Power Input
Input
DC-
DC+ (24 VDC)
AC Ground
AC Neutral (AC-)
AC Hot (AC+)
20