Emerson Process Management ControlWave EFM 3808 - Manual (Page 119)

CI-ControlWave EFM Service / 3-3
4. Press down on the Cover’s built-in top latch (with one hand) and up on the Cover’s
built-in bottom latch (with the other hand).
5. Carefully slide the I/O Module out of the front of the Housing. If binding occurs,
gently rock the I/O Module up and down to free it.
6. To replace an I/O Module, power must be off. Carefully align the I/O Module with
the applicable I/O Slot and insert the unit into the Housing. When the assembly is
fully seated, its cover should be latched to the Housing.
7. Connect local termination cables to I/O Module connectors TB1 and TB2 or remote
termination cables to I/O Module connectors P3 and P4.
8. Apply power and test the unit.
3.2.6 Removal/Replacement of an Expansion Comm. Module
1. If the ControlWave EFM is running, place any critical control processes under
manual control and shut down the unit by disconnecting power to the System
Controller Module (SCM).
2. Disconnect any Expansion Comm. Module Communication Cables, making sure they
are identified so they can be returned to their assigned Comm. Ports.
3. Press down on the Cover’s built-in top latch (with one hand) and up on the Cover’s
built-in bottom latch (with the other hand).
4. Carefully slide the Expansion Comm. Module out of the front of the Housing. If
binding occurs, gently rock the module up and down to free it.
5. To replace a Expansion Comm. Module, power must be off. Carefully align the Ex-
pansion Comm. Module with ControlWave EFM Slot 3 or 4 (as required) and insert
the unit into the Housing. When the assembly is fully seated, its cover should be
latched to the Housing.
6. Replace any Comm. Cables and then apply power and test the unit.
3.2.7 Removal/Replacement of a Rechargeable Lead-acid Battery
1. If the ControlWave EFM is running, place any critical control processes under
manual control and shut down the unit by disconnecting power to the System
Controller Module (SCM).
2. Disconnect the power cables from the battery terminals (remove screw and nut on
each terminal).
3. Loosen the two 11/32” nuts on the ends of the Battery Clamp. Lift the Battery
Clamp and rotate it rearward.
4. Carefully lift up and remove the Rechargeable Lead-acid Battery.
5. To replace the Rechargeable Lead-acid Battery, align the unit such that the negative
battery terminal is oriented to the top and right as illustrated in Figure 3-1 and
place the battery into the Battery Mounting Bracket (Battery Clamp must be in the
released position. Note: Make sure the Lead-acid Battery is fully charged
before installing it.
6. Raise the Battery Clamp and rotate it forward until it can be lowered to secure the
Rechargeable Lead-acid Battery. Tighten the two 11/32” nuts on the ends of the
Battery Clamp.
7. Replace the power cables to the battery terminals (black/NEG, Red/POS).
8. Apply power (replace SCM Power Connector - TB1) and test the unit.