Reinstall The Enclosure On The Casing; Establish Local Communication With Electronics Board - ABB LevelMaster 7100 User Manual

6. Position the connector of the sensor cable so it can fit in the neck of the enclosure. Push the connector gently inside the
neck.
7. Gently pull the cable through the enclosure until completely removed.
8. Place the enclosure in a safe place.

Reinstall the enclosure on the casing

Reinstalling the enclosure after casing or sensor assembly replacement includes reconnection of the board to the sensor cable.
It is assumed that the LevelMaster is still out of the tank.
To reinstall the enclosure on the casing:
1. Position the new casing horizontally on the wooden support blocks.
2. Position the new sensor connector cable to fit through the neck of the enclosure and push the connector through the neck
until the connector is inside the enclosure. Avoid pulling the cable or letting the enclosure hang while the cable is inside.
Continue to hold the enclosure.
3. Reinstall the enclosure back on the casing by carefully rotating clock-wise to avoid twisting the sensor cable.
4. Reconnect the board to the sensor cable. The connector is keyed so it will only plug in one way. Push some of the excess
cable back down through the bottom of the sensor assembly while sliding the electronics board back into position. Allow a
small loop of cable to fold back towards the top of the enclosure.
5. Brace the electronics board inside the housing by using the yellow fiberglass tab inserted into the enclosure.
6. Bend the tab gently into a semicircle using the thumb and forefinger, making sure the apex of the arch is placed against
the board while the ends of the tab are braced to the inside of the housing.

Establish local communication with electronics board

All LevelMaster part replacement procedures require local communication with the electronics board. Connecting to the board
allows access for:
Basic parameter viewing
Configuration backup (save sensor data)
Configuration update (download) after hardware changes
Verification after hardware changes
IMPORTANT NOTE: The electronics board does not have to remain in the enclosure for configuration viewing or
backup. If the board is removed temporarily for local communication, error messages are displayed to indicate
disconnection from the internal sensor assembly. If the board is left connected to the sensor assembly for local
communication, ensure that the connection to the laptop does not cause excessive pulling of the sensor cable
which can cause damage to the cable or connector.
To communicate with the LevelMaster:
1. Remove the cover as described in section 8.1, Remove the enclosure cover.
2. Remove field wiring as described in section 8.2, Remove field wiring.
3. Connect the laptop directly to the electronics board using the correct cable and adapters for the board.
a. When connecting to older boards (2018546-005), use the RS-485-to-RS-232 converter (2100241-002) with the cable
adapter (2100250-001, the cable with a single terminal connector at one end).
b. When connecting to newer boards (2104836-001), use the RS-485-to-RS-232 converter (2100241-005) with the
cable adapter (2100250-002, the cable with two separate terminal connectors at one end).
IMPORTANT NOTE: The cables designed to connect the laptop to the board provide power to the board through
one or two 9 Vdc batteries. Always ensure that the batteries are charged. Make sure to connect the positive
LevelMaster 7100 User manual 2105835 Rev AA | 69