User's Manual

Corning Optical Communications User Manual I CMA-490-AEN I Page 67
6.1.6.2 DC Models
DC models include two types of terminal block connectors:
• CLASS 2 (default) – two eight pin terminal block connectors for remote feed (see Section 0).
• CLASS 1 – one two pin terminal block for local plant feed. To use CLASS1 user must change default connector mode from
CLASS 2 to CLASS 1 (see Section 0).
Note the following:
CLASS2 Connector (Remote Feed)
• The CLASS2 DC connector supports the following wire pairs (refer to Figure 6-9):
− One pair for each installed PAM (up to five pairs)
− One pair for OPTM + FAM
− One reserved pair (RSV) for future use
• DC CLASS2 connector specs:
− Supported wire AWG:
o Conductor cross-section, solid (AWG/mm²): 30~12 / 0.2~2.5
o Conductor cross-section, flexible (AWG/ mm²): 30~12 / 0.2~2.5
− Wire strip length: 9~10 mm
• DC Power input:
− DC class 1: 48 VDC (40-60 VDC) 9 A max
− DC class 2: 24 VDC / 48 VDC (20-60 VDC)1.75 A maximum per pair
− Power amplifier consumption per pair: 50 W
• Maximum power consumption: 330 W
• Maximum current consumption: 1.75 A per pair
To perform CLASS2 DC connector wiring – for each DC pair:
1. Identify the positive and negative terminals for the DC pair to be wired on the CLASS2 connector feed positions. The wiring
sequence is positive to positive and negative to negative as shown in Figure 6-9.
2. Use a wire-stripping tool to remove the covering from the end of the DC wire pairs.
3. Open the terminal block screw above the negative feed position and then insert the exposed black wire (negative feed) into
the terminal block.
Note: Ensure that no exposed portion of the DC wires extends from the terminal block plug.
4. Torque the terminal block captive screw (above the installed wire lead), using a ratcheting torque screwdriver.
Recommended torque is 0.49N•m.
5. Repeat the same process as in Step 3 and Step 4 for remaining positive feed (exposed red wire).