AccuLoad IV Installation & Maintenance Manual
Installation 23
The following figure identifies the wiring connections on the THMI electronic module.
3.5.4 A4M Board
The main input/output board for the AccuLoad IV is an A4M board available for the ST, QT, and N4 models,
as well as the SA model’s MMI component. This board provides up to six dual-channel product meter pulse
inputs; any pulse inputs that are not used for product meters can be used for up to four metered injector
pulse inputs.
Figure 13: THMI Module Connections
CN4
CN6
ETH1
1 V+ 12/24 V
2 GND
3 GND
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