Wheelock SAFEPATH SAPE-1AB, Operation And Installation Manual

Page: 17 / 79

SAFEPATH Manual Sheet 18 of 78
Rev. C April 1999
Back-Up Battery Requirements
Table 1 below shows the amp-hour of battery Back-Up required for various system configurations.
BACK-UP BATTERY REQUIREMENTS
CAPACITY OF BACK-UP BATTERY REQUIRED
NUMBER (IN AMP HOURS)
OF AMPLIFIER 4 HOURS 24 HOURS STANDBY 60 HOURS STANDBY
MODULES INSTALLED STANDBY 15 MINUTES ALARM 15 MINUTES ALARM
1 24AH 48AH (Future)
2 24AH 48AH (Future)
3 24AH 72AH (Future)
4 24AH 72AH (Future)
Table 1.
Password Protection
The SAFEPATH panel configured with a DX-200 incorporates password protection to prevent unauthorized use of the keypad on the DX-
200. Passwords may be any number from 0 to 999. The password must be entered correctly to access any system functions.
The initial password is 111. It is strongly recommended that this password be changed. Instructions for changing passwords are given in
the "Setup" section of Appendix C.
Once the password is entered correctly, the user has access to all system functions. If at any time the user has accessed a system
function, but failed to utilize it for at least five minutes, the accessed system function will cease and the enter password screen will be
displayed. The password then must be re-entered and the system function reaccessed.
Note : The password should only be given to authorized and properly trained personnel who are responsible for the operation, testing,
and maintenance of the SAFEPATH panel.
Memory Retention Battery
SAFEPATH panels configured with a DX-200 contain a memory retention battery to power the DX-200 PSRAM message memory during
periods when both input power and battery back-up power have been disconnected from the SAFEPATH panel. The battery's only function
is to prevent the message files stored in the PSRAM I.C.'s from being lost. The memory retention battery powers no other circuitry.
The DX-200 contains battery charging circuitry to maintain the battery at full charge. The charging circuitry has two charging rates, fast
charge and trickle charge. The fast charge cycle is initiated whenever input power is first connected to the digital voice module and lasts for
24 hours. After 24 hours the fast charge cycle is terminated and the trickle charge cycle is initiated and will remain on as long as input
power or battery back-up power remain connected to the SAFEPATH panel.
The memory retention battery duration times for new fully charged batteries during periods of power loss, is shown in Table 2 below.
Note : The memory retention battery in the SAFEPATH panel is shipped in a completely discharged state.
CAUTION: As batteries age, they lose their ability to charge completely. The memory retention battery should be replaced at least
once per year to ensure optimum battery performance.
MEMORY RETENTION BATTERY BACKUP DURATION
FOR NEW FULLY CHARGED BATTERIES DURING PERIODS OF POWER LOSS
NUMBER OF
MEMORY I.C.'S
MINIMUM
(HRS)
TYPICAL
(HRS)
1 3000 6000
2 1500 3000
3 1000 2000
4 750 1500
5 600 1200
6 500 1000
7 428 857
8 375 750
Table 2.
WARNING: IF THE INPUT POWER AND THE BATTERY BACK-UP POWER ARE DISCONNECTED AND THE MEMORY
RETENTION BATTERY IS OR HAS BEEN DISCONNECTED OR DISCHARGED, ALL MESSAGES IN THE PSRAM
I.C.'S WILL BE ERASED. IF STORED MESSAGES ARE ERASED, THEY WILL NOT BE DELIVERED WHEN INPUT
POWER IS RESTORED. THIS COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO
YOU AND/OR OTHERS.
If for any reason the input power and the battery back-up power are disconnected and the memory retention battery is or has been
disconnected or discharged and all messages in the PSRAM I.C.'s are erased, all messages will have to be reprogrammed into the
SAFEPATH panel once the input power or the battery back-up power is reconnected.