Cisco WS-C2950T-24 Hardware Installation Guide - Page 103
Warning, Step 2, Caution, DC Power Connections for Cisco 2911
View all Cisco WS-C2950T-24 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 103 highlights
Chapter 3 Installing and Connecting the Router Connecting Power Warning When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type with upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the insulation and conductor. Statement 1002 Step 2 Step 3 Step 4 Step 5 Strip the wires to the appropriate length for the terminals. The strip length is 5/64 to 1/8 inch (2 to 4 mm) for Amp/Tyco No. 32957 terminals. Crimp the terminals to the power input and safety ground wires. Remove the plastic covers from the terminal block. Save the covers for reinstallation after you finish wiring. Connect the wires to the terminal block, starting with the safety ground wire. Connect each wire to the appropriate terminal as shown in Figure 1. Tighten the terminal screws to 8.0 ± 0.5 in-lb (0.9 ± 0.05 N-m). Warning This unit might have more than one power supply connection. All connections must be removed to de-energize the unit. Statement 1028 Warning The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated. The proper wiring sequence is ground to ground, positive to positive, and negative to negative. The ground wire should always be connected first and disconnected last. Statement 239 Warning An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug. Statement 122 Caution Dual sources with opposite-polarity grounding damage equipment. Caution Caution Do not overtorque the terminal block contact screws. Recommended torque is 5.0 ± 0.5 in-lb (0.56 ± 0.06 N-m) for 2911 series routers, and 9 ± 1.0 in-lb (1.02 ± 0.11 N-m) Figure 3-20 A+ DC Power Connections for Cisco 2911, 2921, and 2951 Routers -DC, input A Return, input A Safety ground Return, input B - DC, input B Safety Ground -DC, input A Return, input A Return, input B -DC, input B +B A+ +B 2911 Terminal block 2921/2951 Terminal block 279991 OL-18712-01 Cisco 2900 and 3900 Series Hardware Installation 3-21