Cisco Systems 12406 series manual Color, 1-46, LED Label, Function, DC-input PEM LED Indicators

Chapter 1 Product Overview

Power Subsystems

•Three LEDs on the faceplate to provide status information. Table 1-7summarizes the function of these indicators.

Table 1-7	DC-input PEM LED Indicators
LED Label		Color	Function
OUTPUT OK		Green	PEM is operating normally in a powered-on
			condition.
INPUT OK		Green	DC power is present at the PEM input and
			within the specified limits.
MISWIRE		Amber	Indicates input is wired backward at the PDU
			input.

•Each PEM weighs 10.5 pounds (4.76 kg), and can deliver up to 1400 W at –48 VDC.

•Only a DC power source that complies with the safety extra-low voltage (SELV) requirements in UL1950, CSA 950, EN 60950, and IEC950 can be connected to a PEM.

•Cisco 12006 and Cisco 12406 routers with a DC PDU and DC-input power entry modules (PEMs) require an external DC circuit breaker for each DC power source:

–Original series Cisco 12006 and Cisco 12406 router input power shall not draw more than 45A max. @ 40.5VDC form each DC power source.

–Enhanced series Cisco 12006 and Cisco 12406 router input power shall not draw more than 60A max. @ 40.5VDC from each DC power source.

This circuit breaker should protect against short-circuit and overcurrent faults in accordance with United States National Electrical Code NFPA 70 (United States), Canadian Electrical Code, part I, CSA C22.1 (Canada), and IEC 364 (other countries).

Note Cisco Systems recommends that you install an uninterruptable power source (UPS) as a safeguard against power loss.

	Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
1-46	OL-11497-03