before performing any of the following procedures, ensure that power is removed from the dc circuit. to ensure that all power is off, locate the circuit breaker on the panel board that services the dc circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
this product relies on the building's installation or power supply for short circuit (overcurrent) protection. ensure that a listed and certified fuse or circuit breaker no larger than 60 vdc, 15a u.s. is used on all current-carrying conductors. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
the installation must comply with the 1996 national electric code (nec) and other applicable codes.
this product is intended for use with copper conductors only.
if your router has a dc-input power supply, follow the directions in this section for proper wiring. a router with a dc-input power supply has a terminal block for the dc power connections.
depending on the type of router you are installing, refer to one of the following:
. "wiring the dc-input power supply for cisco 3620 and cisco 3640 routers" section on page 3-35
. "wiring the dc-input power supply for cisco 3631 routers" section on page 3-38
. "wiring the dc-input power supply for cisco 3660 routers" section on page 3-40
wiring the dc-input power supply for cisco 3620 and cisco 3640 routers
wire and terminal requirements
cisco 3620 and cisco 3640 routers with a dc-input power supply require size awg 14 (2.0 mm↑2) copper wire for the power connections, and they require a ground connection on the chassis, using size awg 6 (minimum 13 mm↑2) copper wire.
for cisco 3640 routers, dc-input power connections must be made using crimp-type ring terminals, or using spade terminals with upturned lugs.
wiring procedure
perform the following steps to connect the router to a 48 vdc power source:
step 1 turn off the dc power at its source.
step 2 for cisco 3640 routers, crimp appropriate ring terminals or spade terminals to the dc power wires. strip the wires to the appropriate length for the terminals used.
for cisco 3620 routers, strip the wires to the appropriate length for the terminal block on the power supply.
when stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type terminals with upturned lugs. these terminations should be the appropriate size for the wires and should clamp both the insulation and conductor. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
step 3 connect the dc power wires to the terminal block as shown in figure 3-52 or figure 3-53.
the terminal arrangement on your router may not be identical to the arrangement shown in figure 3-52 or figure 3-53. you must connect the positive, negative, and ground wires according to the labels on the terminals.
this warning applies only to units equipped with dc input power supplies. wire the dc power supply using the appropriate terminals at the wiring end. the proper wiring sequence is ground to ground, positive to positive (line to l), and negative to negative (neutral to n). note that the ground wire should always be connected first and disconnected last. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
do not overtorque the terminal block captive thumbscrew or terminal block contact screws. the recommended torque is 8.2 ±?0.4 inch-lb.
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. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
secure all power cabling when installing this unit to avoid disturbing field-wiring connections.
after wiring the dc power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the on position. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
step 4 turn on power to the dc circuit.
voltages might be present on the dc-input power supply terminals. turn off the power source circuit breaker and remove the power supply before accessing the terminals. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
wiring the dc-input power supply for cisco 3631 routers
wire and terminal requirements
a cisco 3631 router with a dc-input power supply requires size awg 18 (1.0 mm2) copper wire for the power connection, and it requires a nebs-compliant ground connection on the chassis.
the connections must be made using crimp-type ring terminals, molex part number 19073-0009 (individual), 19073-0019 (on tape and reel), or equivalent.
wiring procedure
you can connect a single dc power source to either the a input or the b input. if there are parallel dual power sources, connect one source to the a input and one source to the b input. a nebs-compliant chassis ground connection is required with both single source and parallel dual sources.
perform the following steps to connect the router to dc power:
before performing any of the following procedures, ensure that power is removed from the dc circuit. to ensure that all power is off, locate the circuit breaker on the panel board that services the dc circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
step 1 turn off the dc power at its source.
step 2 strip the wires to the appropriate length for the ring terminals. the strip length is 1/8 to 3/16 inch (3 to 5 mm) for molex number 19073-0009 terminals.
step 3 crimp the terminals to the dc power input wires.
when stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type terminals with upturned lugs. these terminations should be the appropriate size for the wires and should clamp both the insulation and conductor. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
step 4 remove the plastic covers from the terminal block. save them for reinstallation after you finish wiring.
do not remove the colored screw at either end of the terminal block. those are the terminal mounting screws.
step 5 connect the dc power input wires to the terminal block as shown in figure 3-54 or figure 3-55. to avoid interference with the on/off switches, and to bring the wires close to the cable-tie attachment point, organize the wires downward from the terminal block. (see figure 3-56).
this warning applies only to units equipped with dc input power supplies. wire the dc power supply using the appropriate lugs at the wiring end. the proper wiring sequence is ground to ground, positive to positive (line to l), and negative to negative (neutral to n). note that the ground wire should always be connected first and disconnected last. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
do not overtorque the terminal block contact screws. the recommended torque is 8.2 ±?0.4 inch-lb.
step 6 install the plastic covers over the terminals. (see figure 3-56.)
the safety cover is an integral part of the product. do not operate the unit without the safety cover installed. operating the unit without the cover in place will invalidate the safety approvals and pose a risk of fire and electrical hazards. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
step 7 secure the wires by using cable ties as shown in figure 3-56. the chassis has a cable-tie attachment below and to the right of the terminal block.
after wiring the dc power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the on position. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
step 8 turn on power to the dc circuit.
voltages might be present on the dc-input power supply terminals. turn off the power source circuit breaker and remove the power supply before accessing the terminals. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
wiring the dc-input power supply for cisco 3660 routers
before performing any of the following procedures, ensure that power is removed from the dc circuit. to ensure that all power is off, locate the circuit breaker on the panel board that services the dc circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
wire and terminal requirements
cisco 3660 routers with a dc-input power supply require size awg 14 (2.0 mm2) copper wire for the power connections, and they require a ground connection on the chassis, using size awg 6 (minimum 13 mm2) copper wire.
wiring procedure
perform the following steps to connect the router to a 48 vdc power source:
step 1 turn off the dc power at its source.
step 2 strip the insulation to expose approximately 0.4 inch (10 mm) of the awg 14 copper wire.
step 3 press the corresponding orange-colored release, and insert the positive, negative, and ground wires into the corresponding receptacles of the dc terminal block. see figure 3-57. the spring-loaded release retains the wires.
to remove wires, press the orange-colored release next to each receptacle.
this warning applies only to units equipped with dc input power supplies. wire the dc power supply using the appropriate lugs at the wiring end. the proper wiring sequence is ground to ground, positive to positive (line to l), and negative to negative (neutral to n). note that the ground wire should always be connected first and disconnected last. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
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. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
step 4 plug the wired dc terminal block into the receptacle on the power supply at the rear of the router. see figure 3-58.
step 5 connect the other end of the power cord to the power source.
step 6 if your router has a second power supply installed, repeat step 1 through step 5 for the second power supply.
secure all power cabling when installing this unit to avoid disturbing field-wiring connections.
after wiring the dc power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the on position. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.
step 7 turn on power to the dc circuit.
voltages might be present on the dc-input power supply terminals. turn off the power source circuit breaker and remove the power supply before accessing the terminals. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.