Delta Tau ACC-24E2S, Руководство пользователя

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Accessory 24E2S
Table of Contents 3
INTRODUCTION
The Acc-24E2S Axis Expansion Board provides four channels of PMAC2-style stepper interface and/or
encoder/MLDT circuitry for UMAC and Ultralite/MACRO Station controllers. The Acc-24E2S is part of
the UMAC or MACRO Pack family of expansion cards and these accessory cards are designed to plug
into an industrial 3U rack system. The information from these accessories is passed directly to either the
UMAC or MACRO Station CPU via the high speed UBUS. Other axis or feedback interface accessories
include the following:
Acc-14E Parallel Feedback Inputs (absolute enc. or interferometers)
Acc-24E2 Digital Amplifier Breakout w/ TTL encoder inputs
Acc-24E2A
Analog Amplifier Breakout w/ TTL encoder inputs
Acc-24E2S
Stepper Amplifier Breakout w/ TTL encoder inputs
Acc-28E 16-bit A/D Converter Inputs (up to four per card)
Acc-51E 4096 times interpolator for 1Vpp sinusoidal encoders
Acc-53E
SSI encoder interface (up to 8 channels)
The step and direction outputs are RS422 compatible and are capable of being connected in either
differential mode or single ended configurations for 5V input drivers. Flag input terminals are provided
to allow connection of 12V-24V sensors or limit switches.
Up to eight Acc-24E2S boards can be connected to one UMAC providing up to 32 additional channels of
stepper interface circuitry. Because each MACRO Station CPU can service only eight channels of servo
data, only two Acc-24E2S boards can be connected to the MACRO Station for stepper motor connection.
The Acc-24E2S is also an ideal board to use for dual feedback systems because it can process four
encoders with one single board on the 3U rack.
The Acc-24E2S board contains no processor; it has one highly integrated 4-channel PMAC2-style Servo
IC with the buffering circuitry and connectors around them. The four-axis Acc-24E2S plugs into the
backplane and uses one slot in the Rack.
Features
The Acc-24E2S board can be used with any UMAC or MACRO Station CPU, interfacing through the
Expansion port.
The Acc-24E2S can only support pulse and direction commands from the controller.
Board Configuration
An Acc-24E2S comes standard with one Servo IC providing four servo interface channels, which are
brought out on terminal blocks. Each channel of servo interface circuitry includes the following:

Four output command signal sets, configurable as pulse and direction outputs only:

Four 3-channel differential/single-ended encoder input

Four sets of five input flags and one compare output flag