Dynalco MTH-103E User Manual

5450 NW 33rd Ave, Suite 104

Fort Lauderdale, FL 33309

3211 Fruitland Ave

Los Angeles, CA 90058

MTH-103E

Tachometer/Hourmeter/Trip

Installation and Operation Manual

Rev. E

P/N145F-13048

(c) Copyright 2014, Dynalco Controls

All Rights Reserved

Published: March 18, 2014

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.

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 at [phone] or [phone] or send email to

[e-mail]

•

Additional manuals and CSA certificates are available at www.dynalco.com

•

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.

1

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

- 40 to + 70 Deg C
Range
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.

2

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.

3