User manual

Chapter 1 Introduction to the 2762-17

ADVANCED MICRO CONTROLS INC.

2762-17 DC Outputs

The 2762-17 has a total of eight DC motor control outputs, four per channel. Each channel

has the following outputs.

Motor Forward -

Turns on to rotate the motor in one direction.

Motor Reverse -

Turns on to rotate the motor in the opposite direction of Motor

Forward.

High Speed -

Turns on when motor can be driven at high speed.

Low Speed -

Turns on when the motor should be driven at low speed.

The outputs are sourcing type and are rated at 40 volts, 2 amps DC. Surge rating is 4 Adc

for 10 mSec per output. Each channel (four outputs) has its own power supply connections and

fuse. Fused with a 7 amp fast blow fuse, the suggested maximum output current per channel is

5 amps. Each output has a LED indicator. Two blown fuse indicators are also present.

The output names

Motor Forward

and

Motor Reverse

are completely arbitary and

do not imply the direction of travel of the load. Depending on your setup, turning

the Motor Forward output on will produce increasing position counts or

decreasing position counts.

Transducer Setup Parameters

Transducer setup for each channel consists of nine parameters that define the

transducer, the relationship between transducer position and load position, and

the upper and lower position limits for the load. They can be programmed from

the keyboard or processor. Programming from the processor is disabled when

the keyboard is in use.

Transducer Type

This parameter must be set to the type of transducer attached to the channel, 100 turn or 180

turn. The 2762-17 needs this information to decode the multiturn position from the difference

in positions of the two resolvers.

Count Direction

By default, the transducer position increases with CW rotation of the shaft, when looking at

the shaft. Changing this parameter reverses the rotation for increasing position. In application

terms, if the position of the load is increasing and the transducer position is decreasing, simply

change this parameter.

Decimal Point

This parameter sets the position of a decimal point on many of the modules' displays and is

for the user only. It does not affect the data sent over the backplane. For example, your travel

is measured in inches and your resolution is one thousandth of an inch. Setting a decimal point

at three forces many of the displays to show 'nnn.nnn' where nnnnnn is the present value.