Wiring; Board Versions Overview; Figure 18: Communication And Power Ports Pinouts - ABB LevelMaster 7100 User Manual

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Wiring

The following sections describe the LevelMaster wiring for both power and communications. Wiring may involve a single or
multiple LevelMasters in general-purpose or hazardous areas.
IMPORTANT NOTES: Wiring pinout on the LevelMaster depends on the board version. Wiring may involve only
older boards, only newer boards or a combination of both (at sites with previously installed units). The wiring
procedures described in this section illustrate wiring for the newer board (part number 2104836-001). For wiring
drawings for legacy boards, please refer to the Additional information section or contact technical support.
If planning for batteryless float support, upgrading from older board versions is required. Restoring wiring after
upgrading a LevelMaster to a newer board is covered in detail in the LevelMaster upgrade kit application guide
(see the Additional information section). Upgrade procedures are not included in this manual.
CAUTION - Equipment damage. The LevelMaster electronics board, as with any electronics board, is susceptible
to damage by static electricity or improper handling. To prevent this from occurring, wear a grounding strap.
A grounding strap is a conductive device used to make a connection between the person handling the board and a
high quality ground point. Before handling the board, install a ground strap on the body and then connect it to a
grounded point. This discharges electrical static buildup from the body to ground, preventing static from
discharging to the electronics.

Board versions overview

Wiring and configuration of the LevelMaster vary depending on the electronics board version. Installations may involve the same
type of board or a mix (if installing new LevelMasters in a site where older units are already in place). This section describes
pinouts for the available versions, onboard termination jumpers and indicator LEDs.
Port pinout
Depending on the board version, there may be a single port or two separate ports for power and communications. Figure 18
depicts the ports on a legacy board (left) and a newer board (right). Legacy boards have a single port handling both power and
communications (J1), while the newer board version has one port for each (J11 for communications and the power port). The
pinout and labels for the communication ports are also different. Use the appropriate pinout for the board in the LevelMaster
being installed.
The communication and power ports have removable terminal connectors for convenience. If the connectors are plugged in the
ports when shipped, they can be removed for ease in field wiring (Figure 19).
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Figure 18: Communication and power ports pinouts