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Line Power Module Installation
9 LINE POWER MODULE INSTALLATION
This chapter tells you how to install an optional internal 48V (or 38V) Line Power Module in a
SmartNode 2000 series device. It also describes the installation of the optional external S-Bus 40V
power supply units.
9.1 Safety
Recommendation
Follow these guidelines to ensure general safety:
•
Keep the chassis area clear and dust-free during and after installation.
•
Put the removed chassis cover in a safe place.
•
Keep tools away from walk areas where you or others could fall over them.
•
Do not wear loose clothing that could get caught in the electronic device or chassis.
•
Do not perform any action that creates a potential hazard to people or that makes equipment
unsafe.
•
Before opening the chassis, disconnect all cables to avoid contact with hazardous voltages.
Warning Mains Voltage:
Do not open the case when the power cord is connected. Hazardous
voltages exist in mains-connected cables. Do not touch power supply when the power cord is
connected. Line voltages are present within the power supply when the power cord is connected.
Warning:
Hazardous network voltages are present in WAN and telephone networks ports regardless
of whether power to the device is OFF or ON. Use caution when working near these ports to avoid
electric shock. When detaching cables, detach the end away from the SmartNode first.
Caution Electrostatic Discharge:
Always follow electrostatic discharge (ESD) prevention procedures
when removing and replacing interface cards. Ensure that the SmartNode chassis is electrically
connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good skin
contact. Connect the clip to earth ground to channel unwanted ESD voltages to ground safely. If no
ESD wrist strap is available, ground yourself by touching the metal part of the chassis.
If you place an electronic component down on your bench, lay it on its shielded plastic bag.
9.2
Internal PM-48V-int (or PM-38V-int) Line Power Module
9.2.1 Physical
Specification
•
Input 230VAC
•
Output 48V (or 38V) DC 30W
9.2.2 Module
Installation
The 48V Line Power Module is mounted inside the SN2300, closely adjacent to the existing 12V
power supply. You should not move the 12V power supply module from its existing location. See
Figure 9-1 below.
The SN2400 requires a 38V Line Power Module. The 38V Line Power Module for the SN2400 is
mounted at the same location and in the same way as the 48V Line Power Module for the SN2300.
Warning:
Do not install a 48V Line Power Module into the SN2400!
Hardware Installation Guide, Revision 3.11
