PENTLAND MPV905 User manual

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PENTLAND SYSTEMS LIMITED
OPERATING MANUAL
MPV905
Pentland Systems Limited
1 Cochrane Square
Brucefield Industrial Park
LIVINGSTON
West Lothian
Scotland
EH54 9DR
Telephone: [phone]
Fax No: [phone]
Additional copies of this manual are available at a nominal charge from Pentland Systems
Limited at the above address. Please state clearly which manual(s) you require.
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PEN1LAND SYSTEMS LIMITED
MPV905 OPERATING MANUAL
Pentland Systems is committed providing products of the highest quality that meet or exceed
customers' requirements. We have taken great care to ensure that this product will perform
satisfactorily.
If you should have any difficulty, Pentland Systems Applications Engineers are
available to assist you. Our address, fax and phone numbers are on the preceeding page.
The information provided in this manual is believed to be helpful, accurate and reliable; however
Pentland Systems Limited assumes no responsibility for errors or omissions. Pentland Systems
has no control over the use of this information, and all such use shall be entirely at the users own
risk. Prices and specifications are subject to change without notice. No patent rights or
licences to any of the cirucits described herein are implied or granted to any third party.
Pentland Systems Limited does not authorize or warrant any Pentland Systems product for use in
life support devices and/or systems.
Should it become necessary to return this product for repair, please refer to the return procedures
at the end of this manual.
CHANGE HISTORY
CN No.
240
120
147
805 10967
DATE
MAR'85
JUN'86
NOV'86 JUL'87
SEP'90
REVISION
1.0
1.1
-
l.A
l.B
** THIS MANUAL APPLIES TO THE MPV905 -Rev 1 ONLY**
Copyright© 1990 Pentland Systems Limited- Edition l.B
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TABLE OF CONTENTS
Page
Chapter 1 - GENERAL INFORMATION 1
101 Introduction oooooooooooooooooooooooooooooooooooooooooooooo 1
1o2
General Description ooooooooooooooooooooooooooooooooooooooo 1
1o3
Specification ooooooooooooooooo00oo000oooooooooo. ooooooo. oo 2
Chapter 2 - INSTALLATION INSTRUCTIONS
3 >'
2 o1 Introduction oooooooooooooooooooooooooooooooooooooooooooooo 3
202
Preparing the board ooooooooooooo• oooooooooooooooooooooooo• 3
2.201 Base Address Selection 0000000000000000000000000000000 6
2o2o2 Output Current Range Selection ooooooooooooooooooooooo 7
2o2o3
Address Modifier Code Response ooo•oooooooooooooooo•oo 7
2 02 o3 o1 Programming
the PROM ooooooooooooooooooooooooooooo 8
2.2.3.2 Programming Examples ............................. 9
Chapter 3 - OPERATING INSTRUCTIONS
11
3. 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3o1o1 Jumpers Setting Checklist oooo•ooooooooooooooooooooooo 11
3 02 Operating Procedure oooooooooooooooooooooooooooooooooooooo 11
302 01 Programming ooooooooooooooooooooooooooooooooooooooooo 11
3o2 o1o1 Address Map ooooooooooooooooooooooooooooooooooooo 12
3o2o2 CoPoUo Instructions 000000000000000000000000000000000 12
3o2o3 Analog Output Section 00 00 00 00 00 00 00 00 oo 00 ..... 00 00 .. 13
3o2o3o1 Analog Output Current & Converter Input Codes 000 13
« 3o2o3o 1
Calculating Output Current from Input Code 000000 14
3o2o3o3 Output Range Selection • ooo0000o0 00 00 o 00000 00 000 o 14
30
2. 3 o4 Out put Check oooooooooooooooo0• ooooooo0oooooooooo 14
3o2o4
Output Calibration 0000 00 00 00 00 00 00 00 00 00 0000 0000 0000 15
3o2o5
Output Loading 00 oo 00 000000 o0 00 00000o 00 00 000000000 00 o 16
3o3 Analog Connector ooooooooooooooooooooooooooooooooooooooooo 17
3o4
Factory Set Configuration •ooooooooooooooooooooooooooooooo 17
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Chapter 4 - FUNCTIONAL DESCRIPTION
18
4. 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2 General Information ...................................•.. 18
4. 3 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3. 1 Address/AM Decoder ...............................••. 18
4. 3. 2 Memory Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3.3 Timing and Control Logic ...................•....•••. 19
4.3.4 Analog Output ....................................... 19
Chapter 5 - PROGRAMMING EXAMPLES
20
5. 1 Introduction ............................................. 20
5. 2 Static Analog Output Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . ••. 20
5. 3 Dynamic Analog Output Check .............................. 21
Chapter 6 - SUPPORT INFORMATION
22
6.1 Components List
6.2 Board Layout
6.3
VMEbus Spec -Address Modifier Codes
6.4 Digital to Analog Converter DAC800 Data Sheet
Precision Voltage to Current Converter/Transmitter XTR110
6.5 Circuit Diagram
Appendix A -
VMEbus Backplane Connectors and VME Board Connectors
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Chapter 1 - GENERAL INFORMATION
1.1 INTRODUCTION
This manual provides general information, installation instructions,
operating instructions, functional description and applications
software examples for the MPV905 analog output board (current source).
1.2 GENERAL DESCRIPTION
The MPV905 analog output board is electrically and mechanically
compatible with, and interfaces directly to the VMEbus. ·
The features of the MPV905 include:-
- 8 current source output channels.
- 12 bit resolution.
- 3 output ranges covering standard industrial requirements.
-Address block selectable in 16 Mbyte memory space.
Dynamic analog outputs (using a single digital to analog converter to
drive all 8 channels) allow the MPV905 to provide high channel density on
a single board. This approach frees system space for other peripherals
and minimizes per channel power requirement.
Digital output data for each channel is stored in on-board RAM and the
corresponding analog output voltage of the DAC is stored in separate
sample and hold circuits. These circuits are continually updated by
refresh circuitry. A voltage to current converter on each channel then
provides the current output.
The host CPU changes data in the on-board RAM, and therefore the output
current, by a write operation to the appropriate channel. Glitch free
operation is ensured as the refresh circuitry is disabled while new data
is being written to the RAM. At power up, all outputs are set to minimum
current output for the selected range.
Address
and Address Modifier (AM) decoding are jumper programmable in the
16Mbyte memory space.
An on-board DC to DC converter powers the MPV905 from the +5V system
supply, the current source outputs being powered from a user supply.
... /
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1.3 SPECIFICATION
ELECTRICAL
Typical at +25°C and rated power supplies unless otherwise stated.
OUTPUT CHARACTERISTICS
Number of Channels
Output Curent Ranges (Jumper Selectable)
Short Circuit Protection, Duration
ACCURACY
Total Error Max [1]
Linearity
Gain Error
Offset Error
ACCURACY OVER TEMPERATURE
Accuracy Drift
8
0 to 20mA, 4 to 20mA, 5 to 25mA
Indefinite to Common
+0.05% FSR [2]
"+0.03% FSR
+0.6% FSR
"+0.4% FSR
+60ppm of FSR/°C
------------------------------------------------------------------------------ ~,'
TRANSFER CHARACTERISTICS
Resolution
Settling Time, max
To 0.1% of FSR
To 0.01% of FSR
POWER REQUIREMENTS
From VMEbus
From user supply (Vee)
ENVIRONMENTAL
Operating Temperature
Storage Temperature
Relative Humidity
[1] Gain and offset adjusted to zero.
[2] FSR means full scale range.
MECHANICAL
12 bits
3.5ms
5.0ms
+5V +5% at 1.5A max
13.5V to 40V at 250mA max
o0c to + 60°C
-25°c to +85°C
5% to 90% noncondensing
Compatible with double-height
VMEbus card-racking systems.
Minimum card spacing 20.34mm (0.8") (VNIEbus specification compatible).
One 37-pin 'D' type connector on board for analog outputs.
Use Cannon 'D' type connector part number DC37P/1A1N or equivalent.
2
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Chapter 2 - INSTALLATION INSTRUCTIONS
2.1 INTRODUCTION
This chapter provides installation instructions and an overview of the
user selectable options on the MPV905.
2.2 PREPARING THE BOARD
This section describes the hardware preparation of the MPV905 prior to
installation in a VMEbus system. Following the instructions described in
this section will ensure that the board is configured as desired and will
function as expected when installed.
MPV905 boards are factory calibrated and tested prior to shipment with>
jumpers in pre-determined positions.
Figure 2.1 indicates the physical position of the jumpers on the board.
Table 2.1 lists each jumper, its function and the factory set
position.
A detailed description of each jump2r is given in sections 2.2.1 through
2.2.3.
To alter the address modifier code response from the factory set values,
the user must program the decoding PROM as described in section
2.2.3.1.
Before installation, the user should verify the configuration of the
jumpers and, if necessary, alter the configuration to suit particular
system requirements.
The board should not be installed or removed while power is applied to
the VMEbus system.
3
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