T H E C O N T I N U O U S P O W E R C O M P A N Y
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delay utility power is restored to the cabinet. The battery charger then recharges the
batteries in typically 15 to 20 times the duration of the outage or battery discharge time
(whichever is shorter).
The UPS can be set to force a break in power of 2.5 seconds after utility power returns. This
is optional (not the default) and is used in intersections when a hard-restart needs to be
applied to various devices.
With
Standby
operation, the ONLY required change to cabinet wiring occurs by the
introduction of the PIM. Removal and Replacement (R&R) of the UPS module is quick and
easy even with traffic control devices (TCD’s) connected to the UPS. If no TCD’s are
plugged into the UPS module (i.e. being used for LED flash backup only), R&R of the UPS
module (for upgrades or in the rare event of UPS failure) can be done without powering
down the cabinet or otherwise affecting cabinet operation in any way.
Continuous Operating Mode:
Continuous
operation is used for low power applications such as full LED intersections,
power to the intersection is continuously conditioned and backed up by the UPS. Within the
limitation of the battery capacity, virtually all brownout and power outages are eliminated.
Additional Notes on Operating Modes:
•
A generator can also be connected up and fed through the PIM to provide indefinite
auxiliary backup of the intersection. (OPTIONAL)
•
The SP Series Traffic UPS is designed for compatibility with, and complete
transparency to, all traffic signal cabinet functions including police panel operation.
Flash Operating Modes:( For PIM 30 Model only)
The PIM includes three (3) sets of normally-open (NO) and normally-closed (NC) relay style
contacts. The contacts are intended to connect to the Flash controllers or other devices in
the traffic cabinet. The contacts are actuated at various times as a means of signaling these
devices of important aspects of current operation. These three relay contact sets are labeled
and switched as follows:
Labeled
Usage / Indication
Notes
On-Batt
UPS is operating from battery power.
Timer
UPS has been on battery longer than programmable
threshold. Used as notice of shutdown coming from
low-battery cutoff.
Default time period is 2 hours.
Programmable from 1 to 255
minutes.
Low-Batt
UPS is operating from battery and the battery
voltage has fallen below a programmable threshold.
Used as notice of shutdown coming from low-
battery cutoff.
Default voltage is 92V (about
40% capacity.)
