Advanced Wireless Solutions EMO-500 User Manual

FLOW

TRANSMITTERS

EMO-500

Operation Manual rev.4

ELECTRONICS FOR
INSTRUMENTATION

8809 Industrial Drive, Franksville, WI 53126-9337

Tel: [phone] Fax: [phone]

E-Mail: [e-mail] Web: www.awcompany.com

EMO 500 MANUAL TABLE OF CONTENTS

Table of Contents..........................................................................................................................2

Overview of Display Screens .......................................................................................................3

Introduction...................................................................................................................................4

Special Features............................................................................................................................5

Hardware Connections..................................................................................................................6

Hardware for External Resets and Controls .................................................................................7

External Resets and Controls........................................................................................................8

Quick Programming Options........................................................................................................9

Programming the EMO 500 (F2)................................................................................................11

Ratio Programming (F3).......................................................................................................12

Limit Programming (F4).......................................................................................................13

Meters/Units Programming (F5).............................................................................................15

Global Programming (F6)......................................................................................................17

KFR....................................................................................................................................18

KFT....................................................................................................................................19

Units for Rate.....................................................................................................................20

Sample Size .......................................................................................................................20

Gate Time ..........................................................................................................................21

Analog Offset.....................................................................................................................21

Analog Gain.......................................................................................................................21

Analog Rule.......................................................................................................................23

Unit Number......................................................................................................................23

Default Values Throughout the EMO 500..................................................................................24

Ratio Feedback Mode.................................................................................................................25

Serial Port Operations.................................................................................................................26

Protocol Format.....................................................................................................................26

Checksum Calculation...........................................................................................................27

Address Information..............................................................................................................30

Limited Warranty........................................................................................................................33

Appendix
How to hookup external connections - Appendix A thru E

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

2

Overview of Display Screens

The 0 through 9, and F1 keys display these screens except when programming.

0-KEY = = =>

1-KEY = = =>

2-KEY = = =>

3-KEY = = =>

4-KEY = = =>

5-KEY = = =>

6-KEY = = =>

7-KEY = = =>

8-KEY = = =>

9-KEY = = =>

F1-KEY ===>

RATIOA/B = 1.19
W=Y A=N I = 1.00

FLW A=139.3 CCM
FLW B=136.3 CCM

JOB A=10779. CC
JOB B=11703. CC

GR A=300912. CC
GR B=313391. CC

J A+B 614303. CC
G A+B 623476. CC

CURRENT RATIO LI
WAR=005%ALA=010%

SD1: AO=0000
IN=11111OUT=0000

SD2:FA=139FB=136
TA=10779TB=11793

RATIO A/B=1.19
FL A+B 275.6 CCM

L1 L2 L3 L4
OFF OFF ON ON

T A-B= 24321. CC
F A-B= 15.4CCM

= = =>Current Ratio A/B
= = =>Warning, Alarm, Ideal Ratio

= = = > Flow A
= = = > Flow B

= = = > Job Total A
= = = > Job Total B

= = = > Grand Total A
= = = > Grand Total B

= = = > Job Total (A+B)
= = = > Grand Total (A+B)

= = = >Ratio Warning/Alarm Settings
ANo Ratio Mode@ when Limit
2 Rule is not on Ratio

= = = >Analog Out, 0-4095 = 0-20mA
= = = >Inputs pins 1-5, Limits Out

= = = >Frequency A, B .....(Hz)

= = = >Total Impulses A, B

= = = >Current Ratio A/B
= = = >Flow Rate (A+B)

= = = >Limit Status

= = = >Total Differences
= = = >Flow Differences

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

3

Introduction

The EMO-500 is a Two Component Ratio and Flow Computer. It is primarily designed
for use as a two component, ratio monitoring unit but can also be used as a Two Channel
Flow Rate Monitor and Totalizer. The EMO 500 has the added capability of current
(4-20mA) and voltage (0-5V) analog output signals. These outputs can be used as a
representation of a selectable range of functions or in a ratio linked, closed loop mode ­Ratio Feedback Mode.

The unit is powered by 110V AC but can be jumpered for 220V AC.

The back panel provides these features:

< 18V supply plus ground and input lines for two flow meters.
< 4 programmable relay switched limits which can be used for warnings, alarms, or

automatic shut-down control.

< 5 "Ready to Hardwire" function controls. #'s 1 through 4 allow for remote

operation of resets, display, and Quick Programming. # 5 will "enable" the main
programming menu.

< RS-232 and RS-485 serial ports.
< Analog outputs (4 - 20mA) and (0 - 5V).

Programming functions are shown in red on the keypad.

All of the default program variables can be changed to alternative values through
the keypad or by a host computer with an RS-232 serial port. There are security features
to prevent unintended programming changes - for more information review the pages on
Quick Programming and Full Programming. The Quick Programming functions
allocated to certain keys are indicated in red on the keypad. Keys F1 through F6 have
multiple functions and are also used for the main programming purposes. The alternative
function of each key when in Full Programming Mode is indicated by a banner on the
keypad immediately above these specific keys.

When programming is not enabled the F3/F4/F5 serve as Job Resets and keys 0 through9
are used to select from the 11 operating displays shown on page 1.

IMPORTANT----IMPORTANT----IMPORTANT----IMPORTANT The higher flow side should be connected to

flow meter A as the Ratio calculation is A/B

IMPORTANT----IMPORTANT----IMPORTANT----IMPORTANT

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

4

Special Features of the EMO-500

The EMO 500 is especially suited for use in dispensing systems with irregular flow
patterns. The unit employs a user programmable sampling size to govern how often the
ratio display is updated - the operator then has maximum control over the sampling period
and can easily adjust this to suit his own system parameters. The user is often more
interested in the ratio of components dispensed over a period of time, say in a batch,
rather than on an instantaneous basis.

Programming
< There are 3 methods of programming the unit - two have lockout features to

prevent unauthorized access.
Full Programming Enable:

< The full programming menu is accessible by placing a jumper between pin 5

(enable programming) and pin 6 (Common). The F2 key will page through the

menu of programming options - these options are indicated in red lettering on a

banner above the upper function keys.* See Programming the EMO 500 (Pg.8).
Quick Programming Feature:

< Some variables only need to be installed once. With others, such as Gate Time or

Sample Time, the user may wish to experiment to find a preferred value. To make

this easier or make some selected variables permanently available, such selected

programming functions are accessible in the following way:
Simultaneously - Engage the 'Scroll Display' (jump pin #2 to #6) and press one key on the

upper line, F1 through key #1. Note -The variable is highlighted in red on the key. Press
Enter (F6) to exit. (Pg.17).

Serial Port Programming:
< The EMO-500 is fully programmable through the serial port using RS-232 or

RS-485 type communication. Refer to the Serial Port Operations portion of this

manual for complete information.
Sample Size - # of impulses collected for the Ratio Calculation.

< To determine the ratio - the total number of pulses from both flow meters are

separately counted until one of them reaches the programmed Sample Size. The

number of pulses from flow meter A is then divided by the number of pulses from

flow meter B. The governor will therefore be the meter with the slower pulse rate.

The Sample Size determines both the accuracy and response time of the ratio

calculation - reducing the sample size, increases the response time but decreases

the accuracy. A default value of 200 is factory installed. See P.
Gate Time - Time period over which Rate Calculations are made.

< The gate time (in seconds) is the time period the microprocessor collects pulses to

perform rate calculations. A default value of 1.85 is factory installed. See P.15.

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

5

Hardware Connections

Warning: The AC Power should
be wired just as labeled on the
three pin connector

PIN 1-Ground

PIN 2-Line 110v.
PIN 3-Line Neutral

Grounding Considerations

The grounding is a most important consideration in an installation where

microprocessor technology is applied. The EMO-500 is a panel mounted unit and
therefore the casing is connected to the sub-panel. If the sub-panel is metal it should be
grounded. If the sub-panel is non-conductive - PIN 1 of the three pin connector on the
EMO-500 back panel must be grounded

To insure a proper ground we recommend connecting PIN 1 of the three pin
connector to the panel's central ground point.

Signal and Shielding

The two flow meter pick-ups should be supplied with their respective 18v. supply
voltages and referenced to their respective grounds. This will insure that the input signals
from the flow meters are referenced to the ground connections on pins 2 and 5. Most
applications require some signal shielding. A solid aluminum wrap shielding will work
fine. The shield should be connected to pins 2 and 5 on the flow meter connector. DO

NOT connect the shielding at the flow transmitter.

.

.

IMPORTANT! NEVER CONNECT THE SHIELD TO GROUND AT BOTH ENDS!!
DOING SO CAN PRODUCE UNWANTED OSCILLATIONS IN THE SIGNAL WIRES.

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

6

Hardware for External Resets and Controls

There are 5 inputs to the 15 pin connector to provide extra control capability without
having to go through the keyboard. To
activate the external resets and controls the
user should simply connect the respective
pin to the common 1 - 5 pin. Pins 1 - 4 are
edge triggered, therefore momentary
contact switches should be used to activate
them. Pin 5 (enable programming) is an
on/off function and single pole toggle
switch is recommended

.

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

7

External Resets and Controls

1. Reset All

This reset is the most powerful on the EMO 500.
When activated it will reset:

Ratio : A/B
Job Vol A, Job Vol B & Job Vol A+B
Warning & Alarm Limits
Limits 3 & 4
Grand Totals
Analog Outputs to start point

2. Scroll Display

When activated, this input will scroll the display through all of the 11 screens available. It
also allows access to the Quick Programming functions which are highlighted in red on
the upper keypad line. (See pg 8. for more details on Quick Programming).

3. Reset Job B - resets OFF-RATIO WARNING/ALARM (LIMIT 1 & 2).

When activated, this input will reset the Job B totalizer. This also resets the A/B RATIO
to the IDEAL setting, which simultaneously resets the WARNING & ALARM LIMITS.

4. Reset Job A - resets OFF-RATIO WARNING/ALARM (LIMIT 1 & 2).

When activated this input will reset the Job A total. This also resets the A/B RATIO to
the IDEAL setting, which simultaneously resets the WARNING & ALARM LIMITS.

Note: Simultaneously pressing and holding RESET JOB A and RESET JOB B on the
keyboard, or through the back-panel connections, implements a HOLD TOTAL
function.

5. Enable Full Programming

When activated, this input enables the F2 through F6 keys to perform the programming
functions shown in red on the banner strip above the keypad.

NOTE: F3, F4, F5 will serve as Job Resets in the Job Totals screen when the
Enable Programming switch is off.

.

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

8

The Quick Program Options

While many programming variables such as KFR or meter selection may only require a
"one time" setting - others may require some experimentation to find maximum efficiency
settings. It may also prove desirable to allow an operator in the field some limited ability
to make some quick adjustments. To accommodate these circumstances a method of
jumping directly into some limited programming functions has been made available. This
method is called "Quick Programming" The functions available are noted in red on the
top line of keys -F1-F6 Function Keys & 0-1 keys.

F1..........................................................................................................................Ideal Ratio

F2.......................................................................................................................... Gate Time

F3............................................................................................................... Ratio Warning %

F4...................................................................................................................Ratio Alarm %

F5.................................................................................................................... Decimal Point

F6...................................................................................................................................Enter

0 ......................................................................................................................... Sample Size

1 ...................................................................................................................Specific Gravity

Connect the Scroll Line Input (Pin 2) and the Common 1 - 5 (Pin 6) of the 15 Pin
connector on the back panel of the EMO 500 -a momentary contact switch is
recommended. While this connection is made, simultaneously push any one of the keys
shown above. NOTE: This will not work if full programming is enabled.

*NOTE See Appendix D for a circuit drawing.

To activate a Quick Programming Option.

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

9

F1 Ratio Default Value = 1.00

This function is the address of the IDEAL RATIO which represents the desired ratio
of FLOW A/FLOW B. The default is 1.00 which represents a 1 to 1 ratio.

F2 Gate Time Default Value = 1.85

The GATE TIME is the period of time, in seconds, during which the flow rate
calculation is made. The accuracy and response time of the flow rate display is therefore
dependent upon this value. To achieve a 1% accuracy, the slowest pulse rate should
deliver at least 100 pulses.

F3 Warning Default Value = 5%

The WARNING variable is available to set as a % deviation from the Ideal Ratio. The
ratio calculation is triggered by the first meter to deliver the number of pulses
programmed under the SAMPLE AMOUNT variable. The calculation compares the
measured ratio to the Ideal Ratio and if the difference in % terms exceeds the
programmed value, the warning is activated.

F4 Alarm Default Value = 10%

The ALARM variable is similar to the warning function.

F5 DP Decimal Point

This key is used to locate the decimal point when
programming.

F6 Enter

Locks in programmed values.

#0 Sample Size Default = 200

To determine the ratio the total number of pulses from both flowmeters are separately
counted until the fastest one reaches the programmed SAMPLE SIZE. The number of
pulses produced by flowmeter A is then divided by flowmeter B, and the result
determines the ratio calculation. The accuracy and response time of the ratio calculation
are therefore dependent upon the SAMPLE SIZE. The flowmeter with the lowest pulse
rate should produce 100 pulses before the ratio calculation is updated to achieve a "1%
accuracy. The display screen #7 is an useful guide for this purpose.

#1 SG Default = 1.0
Specific gravity values may be entered for each metered flow should quick corrections
be required in this value.

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

10

Programming the EMO 500

As a security precaution, access to the full programming section is only possible when pin
5 is "enabled". This can be accomplished by connecting pin 5, on the 15 pin connector, to
the pin 6 Common (See Appendix D). Next, after first hitting F2, each function key, F1
through F6, will then allow access to the programming menu indicated immediately
above it on the red banner strip (The banner strip is labeled 'PROGRAMMING' as
indicated below).

ESCAPE ACCESS RATIO LIMITS METERS GLOBALS

IMPORTANT ACCESS IS DENIED TO F3, F4 & F5 UNTIL F2 IS PRESSED FIRST.
THIS IS A SECURITY MEASURE TO PREVENT UNINTENTIONAL PROGRAMMING
CHANGES

Reminder Note: The other programming functions, indicated in red, on the F1 - F6 and 0

- 1 keys are activated by the Quick Programming Options which are reviewed on page 8.
(Quick Programming is provided for immediate access to a few limited programming
functions only).

AFTER JUMPERING PIN 5 TO PIN 6 - THE ACCESS SEQUENCE IS AS FOLLOWS:

MAIN MENU

F2

OPTIONS

F3 F4 F5 F6
RATIO PRG. LIMIT PRG. METER/UNIT PRG. GLOBALS

PRG.

Enable Prog. --> F2

-->

-->

-->

-->

F3
F4
F5
F6

...

(Access to Ratio Prog)

...

(Access to Limit Prog)

...

(Access to Meter/Units)

...

(Access to Global Prog)

PROGRAMMING

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

11

The F1 key serves as an ESCAPE key to leave the programming functions and return to

the last screen displayed.

The

F2 key will page the user through the programming options shown above AND IS

REQUIRED TO ALLOW FURTHER ACCESS.

The F3 key will call up Ratio Programming.

< Enter the Ideal Ratio. This number represents the desired Ratio of Flow Amount

A to Flow Amount B. The default is 1.00,

meaning a 1 to 1 ratio.
< Enter the Ratio Warning. This number

represents the percentage of error between the

actual measured ratio and the desired ideal ratio.

The default is 5%. Therefore, if the actual and

measured ratio differ by more than 5%, the

Limit 1 relay will close.
< Enter the Ratio Alarm. This number works the

same as Ratio Warning except that after the

warning, the EMO 500 will wait for one more

sample amount before closing the Limit 2 Relay

if the ratio error is greater than the programmed

percentage. The default is 10%.

AW Company 8809 Industrial Drive, Franksville, WI 53126 à web: www.awcompany.com

 Tel: [phone]  Fax: [phone] | Email: [e-mail]

REV. 4 10/05 EMO-500 Manual.DOC

12