DP-cPCI-5031

KEY FEATURES AND BENEFITS

•Four S/R to digital and two Digital to synchro channels

•400Hz operation(47Hz - 1KHz operation in tandem with rear I/O card)

•16-bit fixed resolution for stimulus channels

•Programmable (10,12,14 or 16 bit) resolution for measurement channels

•Reference loss and over current detection in stimulus channels

•Reference and Signal loss detection in measurement channels

•Transformer isolation

•Velocity output from measurement channel

•Synchro / Resolver output can be a set angle or a ramp at a programmed rate

•0° to 55°C standard operating temperature

•Windows 2000 drivers provided

•RT Linux drivers provided

•Flight instrumentation systems

•Military servo control systems

•Artillery fire control systems

•Avionic systems

•Robotics applications

•Antenna monitoring systems

•Engine controllers

•Coordinate conversion

•Axis transformation

•Process control

APPLICATIONS

DESCRIPTION

SYNCHRO/RESOLVER TO DIGITAL CONVERTER

DIGITAL TO RESOLVER/SYNCHRO CONVERTER

DP-cPCI-5031 is a Resolver to Digital and Digital to Resolver converter module. This module has four S/R to

Digital converters(measurement channels) and two Digital to S/R converter(stimulus channels). This module

is programmable for simultaneous acquisition and generation of the Resolver signal.

The module provides for resolver to digital measurement channels. The input signals for these channels are

resolver format. It is capable of accepting input over a wide frequency range. It requires a fixed resolver input

voltage. The module provides the facility to mount 400 Hz input transformers on the board. For resolver inputs,

the transformers are of a step down type. This allows matching of the field resolver voltage to the

measurement voltage. For synchro type inputs, a Scott T type transformer is used. This converts synchro input

signal to the resolver format required by the measurement channel.

Depending upon the voltage selected the appropriate rating of the transformer are mounted on the

board.Thus the board offers flexibility for interfacing different range of voltages. These transformers can be

only of 400Hz operation. Low frequency transformer cannot be accommodated due to size constraints. The

Resolver input signal is converted to a digital form suitable for reading from the cPCI interface.

The measurement channels provide an analog output corresponding to the velocity signal. Reference and

signal loss indication are available.

The module provides two Digital to Resolver stimulus channels. Digital angle data programed from the cPCI

interface is converted to the Analog form in Resolver format. A Scott T transformer converts this Resolver

output to Synchro format. The available output power from the converter is 2VA The reference voltage for the

Digital to Resolver converter is given using step down transformer. Loss of reference indication for this section

is provided. Over current indication prevents any damage to the converter.

Synchro To Digital & Digital To Synchro Converter

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DP-cPCI-5031

SYNCHRO INPUT (Measurement Channels)

SYNCHRO OUTPUT (Stimulus Channels)

CONNECTORS

No. of Channels Four Resolver to Digital channelReference Input Voltage 115Vrms ± 10%, transformer isolatedFrequency 400Hz without rear I/O card

47Hz - 1KHz with rear I/O cardAccuracy 4.5 arc min.Input Amplitude 90Vrms L-L

Resolution 10,12,14 or 16 bits programmableSettling Time

Bits 10 12 14 16 ms 2 8 20 50

Bandwidth 15Hz for 60Hz carrier signal100Hz for 400Hz carrier signal

No. of Channels Two Digital to Resolver channelReference Input Voltage 115V ± 10%, transformer isolatedrms

Reference Input Impedence 200K ohmsFrequency 400Hz without rear I/O card

47Hz - 1KHz with rear I/O cardAccuracy 4.5 arc min.Resolution 16 bitsOutput Settling Time <40msec for any digital step changeOutput Amplitude 90Vrms L-L

Drive Capability 2VA

Main card 2 x 62 pin ’D’ type male connectorsRear I/O card 62 pin D type male connector

MECHANICAL

ENVIRONMENT

ORDERING INFORMATION

Please consult factory for

Commercial and Rugged version

Factory options specified based on applications

Board 233.35mm (H) x 160mm (D) Module 6U (H), 4T (W)

DP cPCI 5031 3 0 0

3 - Commercial version

6 - Rugged version

1) No. of Synchro/Resolver to Digital converters required (maximum 4 channels of measurement)

2) No. of Digital to Synchro/Resolver channels required(maximum 2 channels of stimulus)

3) To specify the frequency required(400Hz operation is standard)

4) Rear I/O card for 47Hz - 1KHz operation

5) Voltage ratings of the Synchro/Resolver Synchro: 90V is standardrms L-L

Resolver and other voltage ratings optional

SPECIFICATIONS

REAR I/O CARD

SOFTWARE SUPPORT

Rear I/O card is used for accomodating low frequency transformers for 50Hz/60Hz Input or Output. A special purpose Rear I/O board for

accomodating 50Hz/60Hz transformers for one measurement and one stimulus channel is available. This low frequency Synchro/Resolver

signal can be routed to any of the Input and Output channels of the main board. However if any channel is utilised for Rear I/O then the

corresponding Front I/O channel cannot be utilised. In this card the transformers for both the resolver signal and the input reference signal are

suitably selected for low frequency operation.

The module is supplied complete with device drivers in Windows 2000 and RT Linux. Please contact factory for support in any other operating

system such as VxWorks, QNX, INTime, Lynx etc.

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BLOCK DIAGRAM OF DP-cPCI-5031

Synchro Output Channel 2

Synchro Input Channel 4

Synchro Input Channel 3

Synchro Input Channel 2

Synchro Input Channel 1

c P

C I

B

A C

K P L A

N E

c P

C I

I

N T

E R F A

C E

Decode & Control

Logic

Registers

Resolver to Digital

Converter

400 Hz Scott ‘T’ Transformer

400Hz

Step down transformer

SIN

COS

S1

S2

S3

R H

R L

R L R H

Digital Angle

2 x

6 2

P I

N

D

C O N N

E C

T O R

Velocity Output

Synchro Output Channel 1

Digital to Resolver

Converter

400Hz

Scott ‘T’ Transformer

SIN

COS

S1

S2

S3

400Hz

Step down transformer

R H

R L

R L R H

Digital

Angle

Hot Swap Controller

S

w i t

c h

From J5

S w

i t c

h

J u M p e r

From J5

To J5

S w I

t c h

From J5

Rear I/O of S/R to Digital & Digital to Synchro Converter

c P

C I

C

O N

N E

C T

O R

J 5

50Hz Resolver to Synchro

Transformer

50Hz Resolver to Resolver

Transformer

50Hz Step down transformer

Reference for Synchro O/P

50Hz Scott ‘T’ Transformer

50Hz Step down transformer

Reference for Synchro

I/P

COS 2

SIN 2

COS 1

SIN 1

R H

R L

SIN

COS

R H

R L

R H

R L

S1

S2

S3

6 2

P

I N

D

C

O N

N E

C T O

R

R H

R L

Jumper

selection

DP-cPCI-5031

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