AccuLoad IV Installation & Maintenance Manual
Installation 35
3.6 General Wiring Information
3.6.1 AC Input Power
The AccuLoad A4M board has two AC power inputs, as follows:
• The first AC power input is for instrument power, which powers the AccuLoad’s electronics and is
connected to the A4M board at TB1 (see Figure 21: AC Power Inputs to AccuLoad A4M Board). The
instrument power should be clean and must meet the requirements listed in the AccuLoad IV
specifications (SS06200).
• The second AC power input is used to drive external AC equipment (such as solenoids) and should be
supplied to the AccuLoad by a separate circuit from the power panel.
During initial installation of the AccuLoad and anytime an electronic module is installed, the two
calibration numbers (Cal 1 and Cal 2) written on the top of the module should be configured in
AccuMate for AccuLoad IV to ensure optimum accuracy.
Figure 21: AC Power Inputs to AccuLoad A4M Board
Power
Distribution
Panel
Separate
Circuits
Field I/O
Power
AccuLoad
Instrument
Power TB1
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