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