14
Silent Test LED Indicators
LED
STATUS
INFORMATION
COLOR
AC
On
AC site power
Red
DC
On
DC power > 19 VDC
Red
PART
On
Partial Speaker Driver/Amplifier Operation
Red
FULL
On
Full Speaker Driver/Amplifier
Red
The diagnostic routine of the IPS is processed for each inaudible or full power activation of the system, and the
diagnostic LED indicators represent the results of the most current activation.
The complete results of the inaudible test are collected and encoded by the ESC-864 PC board for transmission back to
the central control point. In addition to the status information mentioned in the table, the ESC-864 also reports the
following information via its RF or landline communication link.
•DC Voltage (system battery voltage)
•AC Voltage
•Ambient Temperature, a 2-digit representation
•Receiver Link S/N , a 2-digit representation
•Activation Count
If all of the SI TEST® LED indicators are illuminated following a test, then all diagnostic routines have been
successfully completed, verifying proper station operation. The LED display of the IPS may be programmed to remain on
until cleared, or to extinguish after a predetermined time period.
4.3.3 Power Saving Logic
The system driver board also features a power saving device. In the event of a loss of incoming power from an AC
source, the system will power itself down after thirty (30) seconds to conserve the batteries by using less energy for
standby operation. When AC is restored, the IPS automatically reverts to full power-up mode and the battery charger re-
charges the batteries.
4.3.4 DC Voltage Regulator
The system driver board produces 12 volts DC, from the 24 VDC supply, to power the ESC-864 PC board and the
optional radio. A 3 amp fuse is in line with the 12 volt DC supply.
4.4 Battery Charger Operation
The battery charger has the primary function of maintaining the system battery supply to full capacity. The battery
charger provides 5 Amps of charging current to the batteries. The operational status of the battery charger can be viewed
by the DC LED during warning signal tone, activation of the SI TEST®, or when the system is powered up. In addition,
a green LED on the charger, indicates proper charging. To maintain optimum battery capacity, the IPS should be
exercised on a frequent basis using SI TEST® and full-power activations.
4.5 Batteries
The batteries are located in the lower compartment of the IPS. Two 12 VDC, 31 AH Gel type batteries are required to
operate an IPS-400, while two 12 VDC 55 AH batteries are required to operate an IPS-800. Detailed installation
information for the batteries is provided in Section 5.
Содержание IPS 400
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