Compac Micromotion CNG50 User manual

Compac Industries Ltd.
52 Walls Road. Penrose. Auckland 1061, New Zealand.
PO Box 12 417 Penrose. Auckland 1642. New Zealand.
Tel: [phone] Fax: [phone] [email protected]
www.compacngv.com
CNG Dispenser
Micromotion Annex
Version 1.0.0

ii
Conditions of Use
Read this manual completely before working on, or
making adjustments to, the Compac equipment
Compac Industries Limited accepts no liability for
personal injury or property damage resulting from
working on or adjusting the CNG Dispenser
incorrectly or without authorisation.
Along with any warnings, instructions, and
procedures in this manual, you should also observe
any other common sense procedures that are
generally applicable to equipment of this type.
Failure to comply with any warnings, instructions,
procedures, or any other common sense procedures
may result in injury, equipment damage, property
damage, or poor performance of the Compac
equipment
The major hazard involved with operating the
Compac CNG Dispenser is electrical shock. This
hazard can be avoided if you adhere to the
procedures in this manual and exercise all due care.
Compac Industries Limited accepts no liability for
direct, indirect, incidental, special, or consequential
damages resulting from failure to follow any
warnings, instructions, and procedures in this
manual, or any other common sense procedures
generally applicable to equipment of this type. The
foregoing limitation extends to damages to person or
property caused by the Compac CNG Dispenser, or
damages resulting from the inability to use the
Compac CNG Dispenser, including loss of profits,
loss of products, loss of power supply, the cost of
arranging an alternative power supply, and loss of
time, whether incurred by the user or their
employees, the installer, the commissioner, a
service technician, or any third party.
Compac Industries Limited reserves the right to
change the specifications of its products or the
information in this manual without necessarily
notifying its users.
Variations in installation and operating conditions
may affect the Compac CNG Dispenser's
performance. Compac Industries Limited has no
control over each installation's unique operating
environment. Hence, Compac Industries Limited
makes no representations or warranties concerning
the performance of the Compac CNG Dispenser
under the actual operating conditions prevailing at
the installation. A technical expert of your choosing
should validate all operating parameters for each
application.
Compac Industries Limited has made every effort
to explain all servicing procedures, warnings, and
safety precautions as clearly and completely as
possible. However, due to the range of operating
environments, it is not possible to anticipate every
issue that may arise. This manual is intended to
provide general guidance. For specific guidance
and technical support, contact your authorised
Compac supplier, using the contact details in the
Product Identification section.
Information in this manual shall not be deemed a
warranty, representation, or guarantee. For
warranty provisions applicable to the Compac CNG
Dispenser, please refer to the warranty provided by
the supplier.
Unless otherwise noted, references to brand
names, product names, or trademarks constitute
the intellectual property of the owner thereof.
Subject to your right to use the Compac CNG
Dispenser, Compac does not convey any right,
title, or interest in its intellectual property, including
and without limitation, its patents, copyrights, and
know-how.
Every effort has been made to ensure the accuracy
of this document. However, it may contain technical
inaccuracies or typographical errors. Compac
Industries Limited assumes no responsibility for
and disclaims all liability of such inaccuracies,
errors, or omissions in this publication.

iii
Contents
Symbols and Units of Measure........................................................................................................................................ 4
Product Identification ....................................................................................................................................................... 5
Document Control Information ........................................................................................................................................ 6
Safety ................................................................................................................................................................................. 7
Software Changes............................................................................................................................................................. 8
Micromotion CNG50 Meter Setup Connection and Calibration..................................................................................... 9
RS485 Wiring................................................................................................................................................................... 10
C4000 with RS485 Wiring ............................................................................................................................................... 12

Symbols and Units of Measure
Compac Industries Ltd.
Page 4
www.compacngv.com
Symbols and Units of Measure
Symbols
Symbols are used in this manual to highlight information that is critical
to the safety of people and equipment, and for the safe and correct
operation of the Compac equipment
An extreme hazard that may result in death or injury if
proper precautions are not taken.
A reminder of safety practices or unsafe practices that
could result in personal injury or damage to associated equipment.
A reminder of safety practices or unsafe practices that
could result in damage to associated equipment and/or voids the
warranty.
Important information essential to the installation and
operation of the Compac equipment
Units of Measure
The following units of measure are used in this manual:
Unit
Measure
Pressure
Bar (bar)
Temperature
Degrees Celsius (°C)
Volume
Litres (L)
Cubic Metres (m³)
Mass
Kilograms (kg)
Length
Metres (m)
Millimetres (mm)
Microns, Micrometres (m)
Inches (")
Torque
Newton Metres (Nm)
Voltage
Volts (V)
Current
Amps (A)
Frequency
Frequency (Hz)

Product Identification
Compac Industries Ltd.
Page 5
www.compacngv.com
Product Identification
Manual Title
Micromotion Annex
Publication Date
Wednesday, 8 September 2010
Application
Compac CNG Dispensers
Power supply
230 - 240 VAC; 50 Hz; 1 Amp +/- 10%
Related Manuals
CNG Dispenser Service Manual
Validity
Compac Industries Limited reserves the right to revise or change
product specifications at any time. This publication describes the state
of the DCA at the time of publication and may not reflect the product at
all times in the past or in the future.
Manufacturer Contact
Details
The Compac Micromotion unit is designed and manufactured by:
Compac Industries Limited
52 Walls Road, Penrose, Auckland 1061, New Zealand
P.O. Box 12-417, Penrose, Auckland 1641, New Zealand
Phone: + 64 9 579 2094
Fax: + 64 9 579 0635
www.compac.co.nz
Copyright ©2010 Compac Industries Limited, All Rights Reserved

Document Control Information
Compac Industries Ltd.
Page 6
www.compacngv.com
Document Control Information
Document Information and Revision History
Document Details:
Micromotion Annex
File Name and Location:
G:\Masters\Manuals\Authorised Manuals\Micromotion
Current Revision Author(s):
R Lacey
Authorised By:
A.Kingstone
Released: 21/09/10
Version
Date
Author(s)
Revision Notes
1.0.0
07/09/2010
R Lacey
Added RS485 wiring and document control page
Distribution
Name
Indicator
Location

Safety
Compac Industries Ltd.
Page 7
www.compacngv.com
Safety
You must adhere to the following safety precautions at all times when
working on the Compac equipment. Failure to observe these safety
precautions could result in damage to the dispenser, injury, or death.
Make sure that you read and understand all safety precautions before
operating the Compac equipment
System Design
Ensure the system design does not allow the dispenser inlet
pressure to exceed its rating. The dispenser does not include any safeties
to protect against excessive inlet pressure. If necessary, suitable protective
devices should be fitted prior to the dispenser inlet.
Mechanical Safety
Observe the following electrical precautions:
Never tighten a fitting under pressure, even if a fitting or joint
is leaking. Always depressurise the line first
Never disassemble a fitting under pressure. Always
depressurise the line first
Be very careful when disassembling frozen pipework, as gas
pressure may be trapped and suddenly released. Always depressurise the
lines first.
Never reuse any O-ring seals that have been in a high
pressure gas atmosphere and then exposed to air. These o-rings swell and
cannot be reused. Always make sure you have a new seal kit available to
replace the seals before disassembly
Make sure that all internal surfaces are cleaned and that
sliding surfaces are lightly greased with O-ring lubricant before reassembly.
Dust and dirt entering components reduce the life span of the components
and can affect operation
Make sure the service area is thoroughly cleaned before
starting to service CNG components. Dust and dirt entering components
reduce the life span of the components and can affect operation
Electrical Safety
Observe the following electrical precautions:
Always turn off the power to the CNG Dispenser before
removing the box lid. Never touch wiring or components inside the CNG
Dispenser with the power on.
Never power up the CNG dispenser with the flameproof box
lid removed.
Always turn off the power to the dispenser before removing or
replacing software or memory IC's
Always take basic anti-static precautions when working on
the electronics, i.e., wearing a wristband with an earth strap.

Software Changes
Compac Industries Ltd.
Page 8
www.compacngv.com
Software Changes
Menu Structure in the K factor Menu
Unused menu options have been removed and the following menu
structure is all that will be shown:
Density
Lo Flo
Hi Flo
B
C
Set to the local density value
Normally set to 2.0 for a car dispenser
Normally set to 30.0 for a car dispenser
Normally set to 0000
Normally set to 00062
As calibration is now carried out in the Micromotion meter
and not in the C4000, there is no K-factor setting available.
Solenoid Test Function
To enable the test function, set the b configuration to 0001.
The displays will show Side A/B and the state of the solenoid outputs.
Use the nozzle switch to step through each of the solenoid outputs one
at a time. The display will indicate whether the solenoid number
indicated is off or on.
Error Messages
There are two additional Error Messages Available for the Micromotion
meter
Error 50 - Communications error with CNG50 meter
Error 51 - Meter not ready / Meter error
These codes have not changed from a standard CNG dispenser with
Compac KG80 Meters

Micromotion CNG50 Meter Setup Connection
and Calibration
Compac Industries Ltd.
Page 9
www.compacngv.com
Micromotion CNG50 Meter Setup Connection
and Calibration
Meter Wiring
The Micromotion CNG50 meter is connected to the C4000 Power supply,
not the processor board. The connections are:
C4000 Power Supply J12
DTRP - RS485B
TXDP - RS485A
Meter Calibration
The Micromotion CNG50 is calibrated using a direct connection to the
Modbus terminals and not using the Compac C4000. For information on
calibrating the meter please see the Micromotion manual and supporting
documentation
Meter Setup
For the meter to communicate correctly with the C4000 Processor it must
be set up as shown below:
Address 751 set to code 0(Mass Flow Rate)
Address 752 set to code 4(Mass Inventory)
Address 753 set to code 12 (Status Word 1)
The Modbus device ID at Address 0313 must be set to:
1for side A
2for side B

RS485 Wiring
Compac Industries Ltd.
Page 10
www.compacngv.com
RS485 Wiring
The following changes are made to standard Compac dispensers to allow
the use of RS485 communication with other devices.
C4000 Power Supply
1) An RS485 Board is fitted inside the Power supply flame proof box.
2) The IS cable pinouts will need to be changed as detailed below. An extra
red wire will need to be added to link pin 5 on J1 with pin 4 on J5
Figure 1: J1 RS485
Figure 2: J5 Power Supply
C4000 Processor
1) Special software to support the Micromotion CNG50 meter will need to be
installed. Please contact the Compac Helpdesk for the latest version.
2) The IS cable will need to have The Red / Black / White cable removed
from J2A and put into pin 6 of J2B.

RS485 Wiring
Compac Industries Ltd.
Page 11
www.compacngv.com
Figure 3: J2B C4000 Processor
3) A new plug will need to be made for J13 and the following wires removed
from J2A and inserted into pins 5 and 9.

C4000 with RS485 Wiring
Compac Industries Ltd.
Page 12
www.compacngv.com
C4000 with RS485 Wiring

C4000 with RS485 Wiring
Compac Industries Ltd.
Page 13
www.compacngv.com