Components/Connections
22
FIGURE 13. Battery Connections
Backup Time
To calculate the actual backup time you need to estimate the total current draw
per power supply, and provide batteries attached to each power supply.
Here is a rough worst case estimate:
Mag locks – draw 400mA all the time, so 8 locks x .40A = 3.2A
17AHr batteries will give you about 5 hrs (17AHr/4A) at 3.2A.
So you’ll need one battery for 12V locks, and two batteries for 24V locks.
Using 24V locks
Using 24 V locks, you would need 5 17AHr batteries for the whole unit – 2
for each of the two lock power supplies, and one for the board power supply
(which is set to 12V).
You need a battery shelf in the rack.
Note – the CPS 1000 power supplies need 48 hours recharge time for 17AHr
batteries.
Power Supply Troubleshooting
FIGURE 14. Power Supply Troubleshooting
To Next Page
Loading...
Need help?
General