10.30
SEL-400 Series Relays Instruction Manual Date Code 20171006
Testing, Troubleshooting, and Maintenance
TiDL Module Replacement
TiDL Module Replacement
To replace a module in the SEL-2240 Axion, perform the following steps:
Step 1. De-energize any power source connected to the power coupler(s) in
the Axion node.
NOTE: The modules are hot
pluggable; however, if a module is
removed, the TiDL system will be
disabled, the same as powering off the
unit.
Step 2. Loosen the chassis retaining screw at the top of the module.
Step 3. Tip the top of the module away from the chassis and lift it from the
bottom lip.
Step 4. Install the new module, inserting the bottom lip first by using the
notch on the module to help with alignment (see Figure 10.20). Then
push in the top of the module to align with the chassis slot and
tighten the retaining screw (see Figure 10.21).
Figure 10.20 Axion Notch Alignment
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