ABB AI880-1 3BSE028587R1 Pulse processing module

This chapter contains general installation instructions for the 2301A Speed Control. Power requirements, environmental precautions, and location considerations are included to determine the best location for the control. Additional information includes unpacking instructions, electrical connections, and an installation check-out procedure. Unpacking Before handling the control, read page ii, "Electrostatic Discharge Awareness". Be careful when unpacking the electronic control. Check the control for signs of damage such as bent or dented panels, scratches, and loose or broken parts. Notify the shipper of any damage.

Selection of Speed Range

 A 4-pole mini-switch is located on the lower left-hand quarter of the printed circuit board. This switch sets the controlling speed range as sensed by the MPU. The speeds are related to the MPU frequency, which is proportional to engine rpm. The control is shipped with Switch 3 on for 2000 to 6000 Hz. Switch 1 provides 500 to 1500 Hz, Switch 2 provides 1000 to 3000 Hz, and Switch 4 provides 4000 to 12 000 Hz. Select only one switch on to match the control to the MPU frequency.

Power Requirements 

Power supply output must be low impedance (for example, directly from batteries). DO NOT power low-voltage versions of the control from high-voltage sources with resistors and zener diodes in series with the control power input. The 2301A control contains a switching power supply which requires a current surge to start properly. To prevent damage to the control, do not power low-voltage versions of the control from high-voltage sources. High and low voltage models of 2301A Speed Controls are available. Low voltage models require a supply of 10 to 40 Vdc, 12 W. High voltage models require a supply of 88 to 120 Vac or 90 to 150 Vdc., 12 W. The ac supply may be 50 to 400 Hz.

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