MTH-103D Microprocessor-Based Tachometer/Hourmeter/Trip INSTALLATION AND OPERATION MANUAL 3690 N.W. 53rd Street • Fort Lauderdale, FL 33309 U.S.A. Phone 954.739.4300 • Fax 954.484.3376 www.dynalco.com • mailbox@dynalco.com 145F-11753.r3.
Overview This manual contains a general product description of the MTH-103D™ Microprocessor-Based Tachometer/Hourmeter/Trip. It also supplies information about the MTH-103D features, functional design, specifications, and configuration. 1.0 Product Description The MTH-103D 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 pickup or dc powered.
1.2.1 Terminal Connections and Dimensions Figure 1–1, Terminal Connections and Dimensions 1.2.2 Specifications The MTH-103D tachometer specifications are as follows: Mounting: Panel mounted. Power: Magnetic pickup or 9–30 Vdc. Display: 5 active digits (0 to 99999), non-blinking liquid crystal display (LCD), 0.4 inch (10.2 millimeter) character height. Input Signal Frequency: From 10 to 13,000 Hz.
1.3 Tachometer Accuracy: Quartz crystal-controlled, 1 RPM resolution, within ±0.2% under all combined environmental conditions. Environment Temperature: Operating: –5ºF to +175ºF (–20ºC to +79ºC) Storage: – 40ºF to +195ºF (– 40ºC to +90ºC) Vibration: Military Standard 810C, Method 514.2, Curve P, to 500 Hz. Hourmeter: 100,000 hour range (99,999), 1-hour increments. Display is visible and time accumulates only when the signal is applied to terminals A and B. Hourmeter accuracy is ±0.2% of reading.
1.3.1 Power Up – Signal or dc-powered Apply power from either: a. A signal frequency generator or a pickup (minimum 4.0 Vrms; maximum 15 Vrms) connected to terminals (A) and (B) (no polarity). or... b. A 9–30 Vdc source connected to terminals (1)(+) and (4)(–). (1.5 Vrms nominal signal required). The software revision number will display for one second when power is initially applied. Note If flashing colons appear on the display, there is insufficient power being applied to the unit. 1.3.
1.4.1 Configuration Method Figure 1–2, MTH-103D Setup Flow Chart Reapply power as explained in 1.3.1. Press and hold the select push button (for more than ten (10) seconds).
The following are instructions to configure the parameters of the MTH-103D in the CONFIGURATION mode: Note There are three (3) push button actions to communicate the necessary information to the unit: a. Momentary press and release within ½ second. b. Press, then hold for more than one (1) second. c. Press, then hold for more than ten (10) seconds. Reapply power as explained in 1.3.1. Press and hold the select push button (for more than ten [10] seconds.
To select the desired option, press and hold the select push button for at least one (1) second. The digit will increment and roll over from 9 back to 0. When the desired value is obtained, release the push button. If the correct value was not obtained, again press and hold for at least one (1) second; the digit will increment until the correct value is obtained. WARNING Use only digits 1, 2, or 3 in this step. Any other digit may cause the unit to malfunction.
WARNING To select option HSEL 3 or HSEL 4, the SSEL option selected in 1.5 MUST have been SSEL 4 since the trip can only operate on either speed or hours, not both. The desired option is selected in the same manner as in 1.5, the SSEL option. To move to the next screen after selecting the desired HSEL option, momentarily press and release the push button. 1.5.3 Preset/Reset Hours (HOUrS) Screen The next screen will be “HOUrS”.
1.5.5 ProG? (Configuration or Run) Screen The next screen will display “ProG?”. This screen allows the user to enter the CONFIGURATION mode or the RUN mode. a. To set, momentarily press and release the push button to return to the CONFIGURATION mode or … b. Press and hold the push button for at least ten (10) seconds to enter the RUN mode. 1.
MTH-103D Installation and Operation Manual 11
MTH-103D Installation and Operation Manual
