Absolute Digital Encoder

High Resolution in Small Compact Housings:

The ResoCoder is available in two configurations:

Absolute Position Decoding:

The ResoCoder is an absolute encoder. That is, it keeps track of the exact shaft position, even during a power outage or switching-off the machine. At power-up, the ResoCoder will pick up the exact shaft position, even if the machine moved during the power outage.

Field-Selectable CW/CCW Operation:

The ResoCoder is factory-wired for ascending counts with CCW shaft rotation. However, the direction of operation can be easily selected in the field by opening-up the case and simply reversing the resolver input plug. No wires need to be unsoldered or soldered. Also an optional external toggle switch is available for selection of ascending counts direction without opening up the unit.

Ratiometric Resolver-to-Digital Converter:

The AVG Automation ratiometric-tracking converter is practi-cally immune to electrical noise, voltage, frequency, and tem-perature variations, with slew speeds up to 5000 RPM.

Versatile

Choice of Mounting Styles and Enclosures:

To match almost any application, the ResoCoder is available in various mounting styles. The standard, size 252.5" (63.5 mm) dia., NEMA 4 housing is designed for medium-duty applications and is available for flange- or servo-mount with an MS-connector located at the end or on the side.

Variety of Outputs:

The ResoCoder is available with quadrature incremental or Binary, Gray Code, or BCD absolute position output formats. A further flexibility to interface to other devices is provided by TTL (5 V logic), PNP source transistor (50 VDC @ 100 mA), NPN sink transistor (50 VDC @ 100 mA), Open Collector-(7406 or 7407) and complimentary line driver- (75174) types of outputs.

5 VDC or 10-28 VDC Voltage Range:

The standard models can operate from a 5 VDC or l0-28 VDC power supply. This wide voltage range provides an increased flexibility in using the ResoCoder in control systems of different voltage levels without requiring an extra power supply. An existing power supply can be used to power the ResoCoder. That is, if a PLC operates at 24 VDC, a 10-28 VDC ResoCoder model can be connected to the same power supply, thus cutting down the system cost.

Flexible Programming of Counts-per-Turn:

The advanced R-to-D converter used in the ResoCoder makes it possible to order any number of scaled-counts-per-revolu-tion. Outputs with 360, 1000, and 3600 counts-per-turn are standard. However, the unit can be delivered with custom-scaled counts up to 4096 if so desired. Consult the factory for special configurations.

Multiplexing Capability:

The TTL-type output of the ResoCoder is provided with tris-tate capability and can be wired Logic-OR. This allows more than one unit to be connected to the same input of a PLC.

Direction of Rotation:

The direction of rotation is controlled by an input signal on pin "P", with input signal level compatible with the output drivers installed. Low-level for ascending counts with CCW rotation, High-level for ascending counts with CW rotation. Open circuit default is Low for "P"-type outputs, High for others.

SHORT-CIRCUIT-PROOF OUTPUTS

Very often electricians try to make or change connections under power, and that's when various electrical devices are damaged by shorting. The ResoCoder is available with short-circuit-proof PNP (sourcing) or NPN (sinking) transistor out-puts. Any accidental short on output will not damage the unit.