Max Machinery G Series Quick start guide

High Resolution, Linearized
Frequency Transmitters
Operational Manual
For Models
295, 296 and G Series Transmitters

Max Machinery, Inc. 29X Frequency User Manual © Copyright 2015 Rev. 002Q1 2
Table of Contents
General Description ............................................................................................................ 3
Transmitter Specications ................................................................................................ 4
Installation ............................................................................................................................ 5
High Temperature Operation ........................................................................................... 7
Temperature Limits ............................................................................................................ 8
Limited Warranty ................................................................................................................ 9
Custom Instructions for Hazardous Locations/Explosion Proof Housing:
www.maxmachinery.com/content/explosion-proof-installation-instructions
Additional technical documents regarding transmitter performance and advanced operation are available
at www.maxmachinery.com. Max Machinery, Inc. reserves the right to make changes to the product in this
instruction manual to improve performance, reliability, or manufacturability. Contact Max Machinery Inc. for
the latest available specications and performance data. Although every effort has been made to ensure
accuracy of the information in this instruction manual, Max Machinery Inc. assumes no responsibility for
inadvertent errors.

Max Machinery, Inc. 29X Frequency User Manual © Copyright 2015 Rev. 002Q1 3
The Max frequency transmitters are designed to work with the
entire family of Max Flow Meters to provide extremely precise
ow measurement in a cost effective package. Different options
for electrical connections and temperature ranges cover a wide
range of application environments – from the laboratory to harsh
industrial processes.
This latest generation of transmitters use modern sensor
technology coupled with advanced signal processing to deliver
new levels of performance and reliability. Hall sensors are used to
detect the position of a driven magnet inside a Max Flow Meter.
Changes in position are tracked by a microprocessor, which
generates an output frequency proportional to the ow rate. Advanced signal processing provides both ne
angular resolution (0.36 degrees rotation per pulse) and rapid response (output updated every one ms).
These transmitters are typically mated to a mechanical ow meter, congured, and calibrated at the factory
as a matched set. This ensures accuracy and allows quick setup in the eld. For eld installations where the
transmitter has not been setup with a meter at the factory, an optional serial interface kit provides full access
to all conguration options and parameters.
Transmitter Features
High resolution measurement - Congured output resolution of 1 to 1000 pulses per revolution.
Linearization of up to 16 points to fully describe the ow meter’s output curve and achieve the highest
system linearity over the meter’s entire operating range.
Compensation Algorithm – Compensates for variations in Hall sensor and ow meter characteristics to
provide a stable, undamped output frequency that accurately represents the instantaneous ow rate. This
feature is factory set when the meter and transmitter are mated together. If the transmitter is changed, the
compensation can be performed via a button on the PCA.
Anti-Dither Pulse Buffer - Prevents undesired reverse pulses which can occur at very low ow rates in the
presence of vibration or hydraulic noise. If the meter reverses direction and then resumes forward rotation,
the pulse count will represent only the total forward ow. Reverse ow exceeding the pulse buffer setting will
result in an output frequency proportional to reverse ow rate. The buffer quantity can be set from 1% to
100% of a revolution.
Ex Proof Model 295
Model 295
Model 296
General Description

Max Machinery, Inc. 29X Frequency User Manual © Copyright 2015 Rev. 002Q1 4
Supply Voltage 5-26 Vdc
Supply Current 25-30 mA typical
Output (5.0 Volt Supply) No Load 0.00 / 4.80 Volts
(TTL and CMOS compatible) 2.5K Load to Common 0.00 / 4.60 Volts
2.5K Load to +5 Volts 0.25 / 4.80 Volts
Short Circuit Current (1) 45 mA
Output Impedance 100 Ω
Rise/Fall Time 0.2 μSec
Output Update Rate(2) 1 ms
Min/Max Frequency 0-60 kHz
Resolution 1 - 1000 pulses/rev, Single Phase
1 - 500 pulses/rev/phase, Quadrature
Ambient Temperature Range Transmitter (Storage)–40ºC to 85ºC (–40ºF to 185ºF)
Transmitter (Operation)(3) –40ºC to 80ºC (–40ºF to 175ºF)
Maximum Temperature, Process Fluid
(20ºC Ambient, 5V supply) Standard Model 90ºC (195°F) – Models 295 & 296
High Temp Model – Model 296
Ultra-High Temp Model 225ºC (435°F) – Models 295 & 296
Anti-dither Range 50% of a meter revolution - unidirectional - 2% bidirectional.
(software selectable from 1-100% of 1 revolution)
Signal Filtering Software selectable from 1ms to 250ms time constant
( 1) Continuous Short Circuit is not recommended. The output current should not exceed 10 mA
(2) Events are seen as output transitions 1 ms after they occur
(3) Temperature of metered uid will affect transmitter temperature, see graph
Transmitter Specications

Max Machinery, Inc. 29X Frequency User Manual © Copyright 2015 Rev. 002Q1 5
Mechanical Installation
1. The transmitter is attached to the ow meter’s threaded magnet shield. Hand tighten only. (~ 3 ft-lb)
2. The transmitter lid has four thread paths. To realign the cable, remove the lid and rotate up to 180° and
retighten using an alternate starting point. Tighten to compress the O-ring seal.
Removal
1. Remove electrical connections 2. Unscrew transmitter, using a wrench if necessary.
Removal note: The transmitter does not need to be removed from the ow meter for any eld servicing
or adjustments. Normally, the ow meter and transmitter are shipped back to the factory for calibration
or service as a unit. If the transmitter needs to be removed from the ow meter for installation, be sure to
retighten the transmitter snugly in order to ensure proper sensor alignment.
Moisture Protection
On all models, the housing is designed as a liquid and vapor-tight enclosure. There are O—ring seals at the lid
and possibly also the base of the housing — these need to be fully seated. A properly sealed transmitter will
prevent the formation of damaging moisture inside the housing.
Turck connector Model: The connector is sealed to the lid at the factory and is ready for use.
NPT Model: To ensure a moisture-tight seal, apply appropriate sealant to the threads at installation.
Electrical Installation — Wiring
The electrical connector versions are pre-wired inside the transmitter and ready to accept a mating cable
(available from the factory). The liquid-tight, NPT models need to be wired during installation as shown in the
table below:
Models
295 & 296 Mating Cable
Wire Color
Turck
Pin #
Case Ground Case Blue 3
Common Com Black 4
Power 5-26 Vdc V+ Brown 1
Output Phase A Ph A White 2
Output Phase B Ph B Grey 5
Frequency
Single Phase
Wiring
Models
295 & 296 Mating Cable
Wire Color
Turck
Pin #
Case Ground Case Blue 3
Common Com Black 4
Power 5-26 Vdc V+ Brown 1
Pulse Output Ph A White 2
N/A NC Grey 5
Frequency
Single Phase
Frequency
Quadrature
* A current sinking device produces an output pulse which is the opposite of a
sourcing device. A positive DC voltage must be applied to the wire running between
PhA and your PLC. When the output is triggered, this voltage will be grounded to
zero volts. Note: use a 5k ohms resistor to limit the current ow in the signal line.
Current Sinking* Wiring
(models 29X-6XX)
PLC
Digital
Input
V+
V+
Out
0V
Transmitter
Turck Pin #2
Turck Connector
21
4
5
3
Installation

Max Machinery, Inc. 29X Frequency User Manual © Copyright 2015 Rev. 002Q1 6
LED Rotation/Output Indicators
All of the microprocessor based transmitters incorporate a LED to indicate that they are producing a pulse
output and/or detecting magnet rotation in the meter.
An alternating red/green or blue/green LED indicates that the circuit is detecting a rotating magnet and
should provide an output. Additional LED’s are present for setup, programming and troubleshooting and are
not intended for general use.
Error Codes
Flashes 8x a second to indicate that the magnet is not detected
Note: There are no selections or adjustments to be made on the circuit board. The only method of altering the
setup parameters is through the serial interface program. Contact the factory regarding P/N 294-100-050,
user interface software.
Field Compensation of transmitter
When a new transmitter is attached to a ow meter, the compensation routine should be performed to
optimize the performance of the system. This routine requires a steady ow rate which turns the meter at
between 15 and 1000 RPM. For the Model 295 and 296, the sequence is as follows:
1. Stabilize the ow rate
2. Push the compensation button on the PCA
3. The blue/green LED will change to solid blue for 6 to 8 revolutions of the meter
4. A green indicator light indicates a successful update of the compensation, a red indicator light
indicates that the previous compensation has been retained.
Installation continued...

Max Machinery, Inc. 29X Frequency User Manual © Copyright 2015 Rev. 002Q1 7
8/23/11
MAX MACHINERY
1
2
3
4
5
6
7
8
A
B
C
D
A
B C
D
1
2
3
4
56
7
LOAN. NEITHER THIS DOCUMENT NOR THE
1
Wiring Diagram for Remote 295/296 Xmtrs
8
1:1
DRAWING
SIZE
33A HEALDSBURG AVE
DESIGNER
CONSISTENT WITH THE PURPOSE OF THE
.003
.XXX
LOAN WITHOUT PRIOR WRITTEN CONSENT OF
.010
DRAWN IN INCHES
.XX
.05
MAX MACHINERY INC.
BREAK ALL EDGES
UPON COMPLETIONS OF PURPOSE OF THE
INFORMATION IT CONTAINS MAY BE USED BY
.XXXX
TO .010 - .015
OR DISCLOSED TO PERSONS NOT HAVING A
NEED FOR SUCH USE OR DISCLOSURE
TOLERANCES
1°
*** COPYRIGHT ***
DESCRIPTION
HEALDSBURG, CA 95448
SHEET
SCALE
DATE
FINISH 64
ANGULAR
D
MAX SURFACE
TM
.0005
3RD ANGLE PROJ.
bsnyder
1
OF
REV
-1
FINISH MATERIAL
FRACT.
1/64
MACHINED STANDARD
.X
THIS DOCUMENT IS THE PROPERTY OF
MAX MACHINERY INC. AND CONTAINS
CONFIDENTIAL AND TRADE SECRET DATA
OF MAX MACHINERY INC. THIS DOCUMENT
MAY BE TRANSFERRED FROM THE CUSTODY
OR CONTROL OF MAX MACHINERY INC. ONLY
AS AUTHORIZED BY MAX MACHINERY INC.
AND THEN ONLY BY WAY OF LOAN FOR
LIMITED PURPOSES. IT MAY NOT BE
REPRODUCED IN WHOLE OR IN PART AND
MUST BE RETURNED TO MAX MACHINERY
INC. UPON REQUEST AND IN ALL EVENTS
FOR FEATURES WITHOUT
DIMENSIONS, REFER TO
ELECTRONIC MODEL FILE.
UNLESS OTHERWISE
NOTED, TOLERANCE ON
THESE FEATURES IS
.010
Black Brown Blue G re y White
For Pulse PhB -- Grey
Ret - - White
Sig -- Grey For Analog PhA -- White
Rb Case 5v Ra Com
G re y Blue Black White Brown
Com
Case
5v
Ra Rb
Shield
shield with shrink wrap or tape
Remote to Receiver Pigtail Connector from
and connect to Brown/Com. receiver box end. MUST cover
Com Case Ph B/ Re t PhA/Sig V+
Blue
Receiver Box Wiring
Brown
Meter Side Wiring
*** *** Bla c k
Shield is only connected at the
NOTE:
For ha za rd ous
location installations, customer
must supply the ir
ow
n ca bling and conduit
between
the me te r side
a
nd the receiving box.
The
receiving box must be
in a SAFE z o n e!
Use Standard Cable for Connection to Instrumentation

Max Machinery, Inc. 29X Frequency User Manual © Copyright 2015 Rev. 002Q1 8
Operation Above 65°C (150°F)
The operating limit of the meter/transmitter is a function of both the ambient and the metered uid
temperature, as shown in the following graphs. Although the electronic components are rated to 80°C
(175°F), additional heat can be conducted from the ow meter into the transmitter housing requiring a lower
ambient temperature limit for high uid temperatures.
To prolong the life of the transmitter and reduce the risk of component related failures over time, high
ambient temperatures >65°C (150°F) should be avoided if possible. It is a good idea to locate the transmitter
away from hot spots such as steam pipes, ovens and heaters. When working with elevated uid temperatures
>65°C (150°F), insulating the ow meter is required to reduce heating of the electronics by convection of hot
air off of the meter (especially for larger meters). The upper temperature limits shown in the curves rely on
ambient convection to remove heat from the transmitter housing, cooling the electronics. For this reason,
if operating near the upper temperature limit, the transmitter should not be insulated. At these elevated
temperatures, the transmitter will be very hot — exercise appropriate caution.
Model 29X Transmitter Series
-25
0
50
20
40
60
80
100
120
100 150 200 250 300
Process Temperature °C
Ambient Temperature °C
225
110
Ultra High
temperature
2 part pickup
Standard High
temperature
2 part pickup
295 & 296 296 295 & 296
Temperature Limits
High Temperature Operation

Max Machinery, Inc. 29X Frequency User Manual © Copyright 2015 Rev. 002Q1 9
The Seller warrants all equipment manufactured by it to be free from defects in materials and workmanship in normal
service for a period of twelve (12) months from the date of shipment. When given prompt notice by the Purchaser, the
Seller shall, in complete fulllment of its liabilities under this warranty, correct by repair or replacement any such defect
without charge F.O.B. the Seller’s factory, with the following stipulations:
1. Product is not to be returned to Seller without rst obtaining a product-evaluation quote number from our
Customer Service Department at [phone].
2. Seller assumes no liability for charges incurred for repairing, removal or replacement, or for repairs made
outside of its factory.
3. Seller reserves the right to inspect products claimed defective under warranty and is the nal authority on the
validity of the warranty claim. (Actions that void the warranty include, but are not limited to, disassembly of the
meter, failure to install recommended ltration or passing incompatible liquids through the meter.)
IT IS EXPRESSLY AGREED THAT THIS WARRANTY OR ANY OTHER WARRANTY STATED OR REFERRED TO ON THE
SALES ORDER DOCUMENT IS EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY OF MERCHANTABILITY, FITNESS OF
PURPOSE, OR ANY OTHER WARRANTY OF QUALITY, EXPRESS OR IMPLIED.
Limited Warranty