WOODWARD 9905-969 Input logic module

The supplemental flags T, U, V, and W, plus the USER flag, for both axes can be brought in through header J3. These 5V CMOS inputs are directly tied to the inputs on the PMAC2 (no isolation), where they have 10 kΩ pull-up resistors. The supplemental flags can be used for fault codes, hall-effect sensors, or sub-count interpolation.

POWER SUPPLY 

The ACC-8E requires a +/-12V to +/-15V power supply provided through TB1. Often, this will be provided from the bias power supply of the amplifier. This supply should be isolated from the PMAC2's 5V supply. The current requirements are under 200 mA for each voltage. A small amount of 5V power referenced to PMAC2's common (GND) is required for on-board circuitry, and commonly for the encoders connected through the ACC-8E. Almost always this power is brought in from PMAC2 by the 100-pin connector and passed through jumper E1 on the ACC-8E. However, if the cable is very long, or the encoders require a lot of power, it is possible to remove jumper E1 and provide 5V locally through TB2. This supply common is tied automatically to PMAC2's common through the ACC-8E.

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