CommScope ATC300-2000 - Manual (Page 32)

ATC300-1000/2000 Teletilt ® RET System Section 2–Installation Instructions and Safety Precautions
Bulletin 639544 • Revision L August 2014 2-3
2.5 Controller Chassis Power
The ATC300-1000/2000 controller chassis provides two powering options, –48 V battery or +24 V
power supply. The controller needs only one of these power options to operate.
Input voltage operating ranges:
+24 Vdc Supply: +19 Vdc to +30 Vdc
–48 Vdc Supply: –36 Vdc to –72 Vdc
Ensure that the operating voltage meets the range specified above.
Warning!
To avoid shocking hazard, open the circuit breaker protecting the power distribution
for the mounting rack.
Connecting to the +24 V Power Supply:
1. Open +24 V circuit breaker at the mounting rack.
2. Using a flat-blade screwdriver, remove the 2-pin power connector from the controller’s chassis.
3. Attach the power and return the wires to the connector as shown in Figure 2-3.
4. Attach the power and return the wires to the +24 V power distribution point at the mounting
rack.
5. Close the +24 V circuit breaker at the mounting rack.
6. Replace and secure the 2-pin power connector to the controller’s chassis.
Figure 2-3. +24 V Power Installation.