Dynalco MTH-103E Operating instructions

3211 Fruitland Ave

Los Angeles, CA 90058

MTH-103E

Tachometer/Hourmeter/Trip

Installation and Operation Manual

Rev. H

P/N 145F-13048

PCO - 00011342

Published: March 18, 2014

Revised: May 06, 2019

DVNALCO

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1

IMPORTANT - PLEASE READ BEFORE PROCEEDING!

The Dynalco model MTH103E is designed for reliable and rugged operation on

engines, turbines and other rotating equipment. This product has been designed and

tested to meet the demands required in many industrial and hazardous locations

meeting critical CSA standards. The performance is directly related to the quality of

the installation and knowledge of the user in operating and maintaining the instrument.

To ensure continued operation to the design specifications, personnel should read

this manual thoroughly before proceeding with installation, operation and

maintenance of this instrument. If this product is used in a manner not specified by

Dynalco, the protection provided by it against hazards may be impaired.

Dynalco® is a Barksdale® brand.

WARNING

 Failure to follow proper instructions may cause any one of the following

situations to occur: Loss of life; personal injury; property damage; damage to

this instrument; and warranty invalidation.

 For clarification of instructions in this manual or assistance with your

application, contact Dynalco as below:

Tech Support: [email protected] or 1-866-227-8528

Customer Care: [email protected] or 1-800-835-1060

Or by mail:

Barksdale Inc.

Barksdale® and Dynalco® Products

3211 Fruitland Ave

Los Angeles, CA 90058

 Additional manuals and CSA certificates are available at

 Follow all warnings, cautions, and instructions marked on and supplied with the

product.

 Use only qualified personnel to install, operate, program and maintain the

product.

 Educate your personnel in the proper installation, operation, and maintenance of

the product.

 Install equipment as specified in the installation section of this manual. Follow

appropriate local and national codes. Only connect the product to power

sources and end devices specified in this manual.

 Any repair is only to be performed by Dynalco using factory documented

components. Tampering or unauthorized substitution of parts and procedures

can affect the performance and cause unsafe operation of your process.

 All equipment doors must be closed and protective covers must be in place

unless qualified personnel are performing maintenance.

 Shutdown / alarms should be tested monthly for proper operation (see page 8)

 Please see pages 9 & 10 for CSA specific installation instructions.

w

2

System Overview

This manual contains a general product description of the MTH-103E Microprocessor-Based

Tachometer/Hourmeter/Trip. It also supplies information about the MTH-103E features,

functional design, specifications, and configuration.

Basic operation

The MTH-103E is a microprocessor-based 5-digit tachometer, hourmeter, and trip. The trip

can be programmed to activate on overspeed, underspeed (Class C), or hours. The unit may

be magnetic pickup or DC powered. The MTH-103E is CSA approved for Class I, Division 2,

Groups A, B, C & D hazardous locations. When pickup powered the MTH103E is rated Class

I, Division 1, Groups A, B, C & D.

Features

The MTH-103E tachometer provides the following features:

 Both signal and power can be derived from a magnetic pickup.

 High accuracy: 5-digit display; 1 RPM resolution; 100,000 hour range.

 Universal: Can be field configured from front keypad for any number of pulses per

revolution, trip point value, and preset/reset hours.

 Displays speed, hours, and the setpoint on command. Fast overspeed reaction time of

100 milli-seconds.

 Design incorporates hardware and materials creating a weatherproof unit that allows

installation in poorly protected areas. This is ideal for both indoor and outdoor

installations.

 Standard Society of Automotive Engineers (SAE) case fits engine panels with 3-3/8

inch (86 millimeter) openings.

 Unit is highly shock and vibration resistant. Face plate is gasketed and spray proof.

 Unit is highly resistant to electrical noise.

Specifications

Input Signal

Passive (variable reluctance) 2-wire magnetic pickup

Digital Output

TRIAC rated @ 0.15 A / 40 VDC

Input Power

9 – 30 VDC or pickup power

Display

Backlit Graphic Display

Connections

Screw Terminals

Operating Temperature

Range

- 20 to + 70 Deg C

Certification

CSA Class I, Division 1 & 2, Groups A, B, C, D

User Interface

The MTH-103E is configured via the keypad on the front panel which includes a graphical

backlit LCD display capable of displaying alpha numeric values. The keypad implements a

menu system, which is navigated using the up, down, left, right, enter and escape buttons.

The display backlight is enabled only when DC powered.

3

Installation:

The MTH-103E is designed to be panel mounted. The dimensions are shown below.

The MTH-103E includes a bracket for securing into the panel.

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4

Terminal Connections

All connections are made to terminals on the back of the unit.

Terminal screws to be tightened to 8 inch-pounds torque.

See pages 9 &10 for complete wiring information.

Programming Overview

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TERMINALS

5

All programming is accomplished through the front keypad.

Below is a brief description of each key.

Press to enter or exit the configuration screens

Press to enter or accept values or to reset the alarm

Select up

Select down

Go back one screen

Select and advance to next screen

Initial configuration consists of the following steps:

1) Programming the # gear teeth

2) Selecting over / under speed setpoints (if required)

3) Pre-setting hourmeter (if required)

-

D

6

Programming Instructions

Important: The MTH-103E must first be programmed prior to operation.

When initially powering up the unit, the display will first indicate the firmware version and then

go to the operational mode.

To configure each input, first go to the main programming screen by pressing the Menu /

Escape key:

Note: If a screen is displayed showing a keypad, this indicates that a security code has been

enabled. Please see “System Settings” section on page 7 for the description of setting a

security code.

The main configuration screen shows the following icons:

Gear Teeth Settings - for selecting number of gear teeth

Hourmeter Settings - configures hourmeter count up or count down

Alarm Settings - for enabling low / high alarms

Alarm Logs - for accessing alarm log info

System Settings - for selecting default display

Configuration of “Gear Teeth Settings”

Using the arrows on the keypad, select the “Gear Teeth Settings” icon and press enter.

Here, you will need to set the number of gear teeth for proper RPM display. The MTH-103E

will allow any number from 1 to 360 teeth.

Always use the right arrow key for selecting and advancing to the next screen.

Ill

a

7

Pressing at any time during configuration will prompt you to save the changes.

Select “Yes” to save any changes made. Selecting “No” will not save changes.

Configuration of “Hourmeter Settings”

Using the arrows on the keypad, select the “Hourmeter Settings” icon.

The first screen will allow you to configure the hourmeter to either count up or count down by

pressing the up / down arrows to select, then pressing the right arrow to navigate to the

next screen. Here, you will be able to either leave the hourmeter to the current setting or pre-

select any number up to 99999 hours. Following this, you will be asked to save the changes.

Configuration of “Alarm Settings”

Using the arrows on the keypad, select the “Alarm Settings” icon.

Here, you can either enable or disable the RPM Alarm and select both underspeed (RPM

Alarm Low) and overspeed (RPM Alarm High) setpoints. Note that if underspeed is not

required, the parameter should be set to “0.” The next screen to the right will allow

configuration of the “Hourmeter Alarm” if required. This will allow you to preset an hourmeter

value that may be used to alert the user of maintenance required, for example.

System Settings

Using the arrows on the keypad, select the “System Settings” icon.

There are (2) display layouts available, either “Large RPM Digit” or “RPM + Hourmeter.”

Note that you are selecting the default layout type. You will be able to change the layout

during normal operation by pressing the left / right arrows.

After setting the layout type, pressing the right arrow will allow the user to either enable or

disable a “Security Option.” The security option allows the user to set a 4-digit security code

for locking out the programming function. If this is not required, select “Disable” and press the

right arrow. You will then be asked to save any changes.

If you would like to enable the security option, select “Enable” and press the right arrow. The

next screen will allow configuration of any 4-digit security code from 1000 to 9999. Pressing

“Enter” will allow the code to be set. After pressing the right arrow, you will be asked to save

the new settings.

Note that if the security code is enabled, the display will always ask the user to enter the 4-

digit code if the “Menu” key is pressed.

In case the security code is mis-placed or forgotten, there is a master code for gaining access to the programming function. The master

code is “5034381”

I I

0

D

8

Operation

Apply power from either:

a. A signal frequency generator or a magnetic pickup (minimum 4.0 VRMS;

maximum 15 VRMS) connected to terminals (A) and (B) (no polarity).

Or…

b. 9 – 30 VDC power source connected to terminals (1)(+) and (4)(–).

(minimum 1.5V RMS pickup input signal required).

The software revision number will display for one second when power is initially applied.

Alarm / Shutdown Output

The MTH-103E will alarm or shutdown when the RPM is above or below limits as specified. If

an alarm condition is met, an alarm indication on the display will blink and the digital output

will trip. The alarm / shutdown triggers a TRIAC rated at 150 mA for switching either an

annunciator input or an external relay. This TRIAC is similar to the SCR used in the previous

version MTH-103D in that current flow must be removed to reset the TRIAC.

Below are the steps to reset the alarm and TRIAC

1. Lower the rpm below ‘high threshold’ and above the ‘low threshold’.

2. Press the ‘Enter/Fn’ key to reset the alarm.

3. Short ‘Pin 5’ and ‘Pin 6’ at output terminals to reset the TRIAC.

WARNING:

Terminal connection screws to be tightened to 8 inch-pounds torque.

The alarm / shutdown output should be tested monthly for proper operation, especially

if being used for engine overspeed shutdown or other critical function.

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9

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Dynalco MTH-103E Operating instructions

Dynalco MTH-103E Operating instructions

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