Dynalco MTH-103D Tachometer / Hourmeter / Overspeed Trip - Manual (Page 4)

4 MTH-103D Installation and Operation Manual
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 incre-
ments. Display is visible and time accumulates
only when the signal is applied to terminals A
and B. Hourmeter accuracy is ±0.2% of reading.
The hourmeter retains counts in memory when
signal or power is removed.
Trip: Setpoint value is field-settable directly in RPM
or hours (count up or down). Normally open
solid-state contacts at terminals 5(+) and 6(–)
close on trip. Reaction time: 0.1 seconds.
Maximum continuous contact rating: 0.15 amps,
400 Vdc. Trip accuracy is ±1 unit maximum.
Weight: 1lb (0.454 kg).
1.3 User Interface
When the unit is powered up, the software version number of the MTH-103D will
be displayed for one second.
The version number is displayed as follows: X-YY. “X” is the major revision number
and “YY” is the minor revision number.
Use this version number when contacting the factory about any problems with this
unit.
The user interface of the MTH-103D provides two (2) modes of operation: the RUN
mode and the CONFIGURATION mode. A single push button (on the face of the
unit) is used to select the desired mode, display the various parameters, and
program the unit.