APG LOE Operating Manual

APG

LOE Ultrasonic Level Sensors

User Manual

Web Enabled Controller, Series B

R

Doc #9004258

Rev C, 04/16

Table of Contents

Introduction ................................................................................................................ iii

Warranty and Warranty Restrictions .................................................................... iv

Chapter 1: Specications and Options.....................................................................1

Dimensions ........................................................................................................................................1

Specications ............................................................................................................................... 2-3

Model Number Congurator .......................................................................................................... 3

System Wiring Diagrams ........................................................................................................... 4-6

Chapter 2: Installation and Removal Procedures and Notes ..............................7

Tools Needed .....................................................................................................................................7

Connection Notes ............................................................................................................................. 7

Electrical Installation .....................................................................................................................7

Installation Notes ............................................................................................................................8

Mounting Instructions ................................................................................................................... 8

Software Setup ............................................................................................................................9-13

Removal Instructions ................................................................................................................... 13

Chapter 3: Programming with Modbus TCP/IP ................................................... 14

Modbus Polling via Ethernet with Modbus TCP/IP ...........................................................14-15

LOE Generic Modbus Register List .............................................................................................15

Modbus Programming of Individual Sensors .......................................................................... 16

Chapter 4: LOE Embedded Web Server ..................................................................16

Accessing the LOE Embedded Web Server ............................................................................. 16

Navigating the LOE Embedded Web Server ........................................................................16-17

LOE Sensor Input Conguration Submenus .......................................................................18-32

Modbus Sensor Conguration Registers ............................................................................ 33-35

LOE Utility Menus ................................................................................................................... 36-39

Chapter 5: Maintenance .......................................................................................... 40

General Care ....................................................................................................................................40

Troubleshooting ............................................................................................................................. 40

Calibration ....................................................................................................................................... 41

Repair and Returns ........................................................................................................................ 41

ii

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Introduction

Thank you for purchasing an LOE Ultrasonic Level Sensor and Web Enabled Controller from APG. We
appreciate your business! Please take a few minutes to familiarize yourself with your LOE and this manual.

The LOE Ultrasonic Level Sensor and Web Enabled Controller oers a wide degree of integrated, exible,

remote and local control and monitoring for your system. The LOE can control up to 10 APG Modbus

sensors--any combination of level, pressure, magnetostrictive and ultrasonic--and two input or output

relay terminals. All readings are available for control and monitoring via TCP/IP for local or remote network

access. The LOE also had exible power options: it can use either POE or an independent 12-28 VDC power

source.

Reading your label

Every APG controller comes with a label that includes the controller’s model number, part number, and
serial number. The LOE label also indicates the default IP address, subnet mask, and mac address. Please

ensure that the model number on your label matches your order.

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iii

Warranty and Warranty Restrictions

This product is covered by APG’s waranty to be free from defects in material and workmanship under

normal use and service of the product for 24 months. For a full explanation of our Warranty, please visit

https://www.apgsensors.com/about-us/terms-conditions. Contact Technical Support to recieve a Return

Material Authorization before shipping your product back.

Scan the QR code below to read the full explanation of our Warranty on your tablet or smartphone.

iv

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Chapter 1: Specications and Options

• Dimensions

LOE-2126, LOE-6126

2.40”

61.0mm

2.30”

58.4mm

4.00”

101.6mm

2.00”

50.8mm

4.00”

101.6mm

6.05”

153.7mm

2” NPT

5.50”

139.7mm

LOE-3136

6.05”

153.7mm

2.40”

61.0mm

3.86”

98.0mm

3” NPT

3.00”

76.2mm

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5.50”

139.7mm

1

• Specications

Performance

Operating Range 0.6 - 15.0 ft. / 7 in. - 180 in. / 178mm - 4572mm (6126)

1.0 - 25.0 ft. / 12 in. - 300 in. / 305mm - 7620mm (2126)

1.5 ft. - 40 ft. / 18 in. - 480 in. / 458mm - 12192mm (3136)
Beam Pattern 9° o axis
Transducer Frequency 43 kHz (3136) / 69 kHz (2126, 6126)
Response Time Programmable, 5 Hz maximum (200 ms)

Communications

Digital Output Ethernet TCP/IP Modbus
Ethernet TCP/IP via embedded webserver (LAN only)

Ethernet TCP/IP to APG-provided website

0-2 Isolated Solid State Relays
Inputs RS-485 Modbus (up to 10 slave sensors)
0-2 Discrete Switches

Electrical

Operational Supply Voltage (at sensor) 48 VDC via POE (requires injector or switch)
12-28 VDC
Current Draw 40 mA @ 48 VDC
80 mA @ 24 VDC
Power Rating (LOE) 2.0 W Max
Isolated SS Relays 120V, 120 mA Max

Accuracy

Accuracy ±0.25% of detected range
Resolution 0.1 inch (2.54 mm)

Environmental

Operating Temperature -40 to 60°C (-40 to 140°F)

Internal Temperature Compensation Yes
Enclosure Protection IP65

Materials of Construction

Transducer Housing PVDF
Upper Housing PC/PET
Transducer Type Ceramic, PVDF faced

2

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Mounting

LOE-2126 2” Ø NPT
LOE-3136 3” Ø NPT
LOE-6126 2” Ø NPT

Compatible APG Modbus Senors

Ultrasonic MNU
Magnetostrictive MPX-E1, MPX-R1
Pressure PT-400-L5, PT-400-L31, PT-500-L5, PT-500-L31
Controllers DCR-1006A, MND

• Model Number Congurator

Model Number: LOE - _____ - _____

A B

A. Model

□ 2126 1 - 25 ft. (305mm - 7620mm); 69 kHz; 2” NPT threads
□ 3136 1.5 - 40 ft. (458mm - 12192mm); 43 kHz; 3” NPT threads
□ 6126 0.6 - 15 ft. (178mm - 4572mm); 69 kHz; 2” NPT threads

B. Relay Conguration

□ 0000 2 relay outputs
□ 0010 1 relay output, 1 switch input
□ 0110 2 switch inputs

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3

• System Wiring Diagrams

External 12-28 VDC Source Wiring

To 12-28 VDC Power Supply

+

-

ETHERNET
PORT

COM
OK

SEND/
RESET

TR1 TR1 TR2 TR2

24V B A GND

RS-485

POE (Power over Ethernet) Wiring

To

Network

Connection

24V B A GND

RS-485

NOTE: Power terminals for 24V and
GND can only be used to power Modbus
sensors if LOE is powered via POE.
If LOE is powered via 12-28 VDC supply,
Modbus sensors must be powered
independently.

LAN + DCLAN

POWER

POE

Power

Injector

24V B A GND

RS-485

Terminal inside housing
supplies 24 Vdc to power
attached Modbus devices

To AC
power

4

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when powering the LOE
from a POE source.

Modbus Sensor Daisy-chain Wiring

270 Ω terminating

resistor NOT internal

to LOE

RS-485

24VBAGND

NOTE: Power terminals for 24V and
GND can only be used to power Modbus
sensors if LOE is powered via POE.
If LOE is powered via 12-28 VDC supply,
Modbus sensors must be powered
independently.

TR1TR1TR2TR2

Use shielded cable

Note: Terminating resistor size recommended
based on input resistance of LOE. Length
of cable and overall impedence of network may

necessitate a different size resistor.

Trunk Line

Sensor Line Drops

B

A

Sensor 1

GND

V+

B

Sensor 2

270 Ω

terminating

resistor at

last sensor

B

A

V+

GND

A

Sensor 3

GND

V+

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5

System Overview - LOE with Modbus network, SSR’s and Internet Connection

MNU Ultrasonic Sensors MP Magnetostrictive Float Level Sensors

Server Hosting

Website and

Logged Data

Network / Internet Connection

Computer

on

Internet

Computer

on

Local

Network

Connection to
Internet

Modbus
Input

Solid State Relays

6

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Chapter 2: Installation and Removal Procedures and Notes

• Tools Needed

• Flat head screwdriver to remove knockouts for cables.

• If you are using a stand pipe to mount your LOE, you will probably need tools to install the stand pipe.

• For any attached Modbus sensors, please consult each sensor’s user manual for installation notes and

instructions.

 NOTE: For any APG sensor user manual, please visit http://apgsensors.com/support.

• Connection Notes

• Up to 10 Modbus sensors can be connected to the LOE in any combination.

• Output SSR’s are rated for 120V, 120mA max.

 IMPORTANT: Each Modbus sensor must be connected to the network individually and

assigned a unique Sensor Number before the next sensor can be added.

• Electrical Installation

• Use at head screwdriver to remove knockouts on either side of LOE housing.

• Insert included cable ttings in knockout holes.

• Connect any relays rst.

• Connect LOE to Ethernet/network.

• Connect independent 12-28 VDC supply if not using POE.

• Connect and set up one Modbus sensor at a time.

 IMPORTANT: Multiple Modbus sensors added to the network simultaneously are all

assigned the same Modbus address/sensor number: 1. Sensors MUST be added to the
network individually.

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7

• Installation Notes

• Mount your LOE sensor so that it has a clear, perpendicular sound path to the surface being moni­tored. Your sensor should be mounted away from tank or vessel walls and inlets. (See Figure 2.1)

• The sound path should be free from obstructions and as open as possible for the 9° o axis beam

pattern.

• If you are using a stand pipe, please see our guide to stand pipes on our website:

http://www.apgsensors.com/about-us/blog/how-to-install-a-stand-pipe.

Figure 2.1

• Mounting Instructions

Mounting your LOE is easy if you follow a few simple steps:

• Never over-tighten the sensor.

• Always screw in your sensor by hand to avoid cross-threading. Thread failure can be a problem if you

damage threads by over-tightening them or by crossing threads.

 IMPORTANT: Do not over tighten! The sensor should be threaded in only hand tight.

 NOTE: Do not mount the sensor where the beam will intersect objects such as ll

streams, pipes, ladder rungs, wall seams, or corrugated tank walls.

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• Software Setup

Initial setup of the LOE and individual Modbus sensors is done via an embedded web server. The embedded
server can be accessed by using either the serial number or local IP address of the LOE and a web browser

(Internet Explorer, Chrome, Firefox, etc).

 NOTE: Port 6700 must be open on your local network for the LOE to connect.

Accessing LOE Embedded Web Server via Serial Number

The easier way to access the embedded web server is to type loe_xxx into a web browser on a computer
connected to the same local network as the LOE. xxx represents the numeric portion of the LOE’s serial
number. See Figures 2.2 and 2.3.

Figure 2.2

Figure 2.3

 NOTE: If your web browser performs a web search for “loe_xxx” istead of accessing the

server, type “http://loe_xxx”.

Some networks will block this direct access to the LOE. If this is the case, you will need to use the IP address
of your LOE to access the embedded web server. The IP address can be obtained two ways: ask your local
network administrator, or logon to your APG-provided website, www.levelandow.com.

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9

Accessing LOE Embedded Web Server via Local IP Address

Log on to your APG-provided website, and a list of sites will be displayed on your screen (see Figure 2.4).
Select the site where the new LOE is installed. From the list of sensors at thie site, select the sensor with the
serial number that matches the new LOE. (See Figure 2.5)

Figure 2.4

10

Figure 2.5

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