Comtrol ES7528 - Manual (Page 10)

10 - Connect the Power and Ground RocketLinx ES7528 User Guide: 2000509 Rev. C
Hardware Installation
• PWR1 and PWR2 support power redundancy and reverse polarity protection.
• Accepts a positive or negative power source but PWR1 and PWR2 must apply to the same mode.
• If both power inputs are connected, the ES7528 is powered from the highest connected voltage.
• The ES7528 can emit an alarm if PWR1 or PWR2 are no longer receiving power. See the Warning
discussion on Page 123 to configure an alarm.
3. Connect a ground wire between the chassis and earth ground using 12-24AWG wire to ensure that the
ES7528 is not damaged by noise or electrical shock.
a. Loosen the earth ground screw on the back of the ES7528.
b. Insert the ground wire.
c. Tighten the ground screw after the earth ground wire is connected.
Electrical Specifications Value
Power Budget
DC1 400W
DC2 400W
PSU/AC Power 300W
Total Power Budget
Minimum Up to 568W
Maximum Up to 720W
Power Consumption Maximum 28W without PD load
† The ES7528 provides redundant or aggregated power inputs, depending on the
voltage of the power input. If there are more than two power inputs connected with
different voltages, the ES7528 is powered from the highest connected voltage
(redundant power). If the voltages of power inputs are the same, the total power
output is aggregated.
For example, to reach 700W, you can aggregate the power inputs accordingly:
• AC = 300W and DC1/2=400W
• DC1 = 350W and DC2/ = 350W