TM-2030 Technical Manual

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6. Reference section: more technical information:
6.1 TM-2030 Specifications
Main battery (B1): Measures Volts, Amps, Watts, Battery % Full, Amp-hours from full, Days since charged, Timer
for days since Equalized. Also data logging (history data) described below.
Secondary Battery (B2) sharing common negative with main battery: Measures volts only
Battery Volts: From 10.0 – 65.0 volts for main battery. From 0.0 to 100 volts on secondary battery. Resolution 0.1 volt.
Accuracy ± 0.3%
Amps charging or discharging: With 500A/50mV shunt: 00.0 to ± 999 Amps, resolution 0.1A. With 100A/100mV shunt
0.00-300 Amps, resolution 0.01 Amp. ±1% ± least significant digit.
Note: Maximum amps is often limited by the shunt capability: maximum current for a typical 500A/50mV shunt is
about ±400A. For a 100A/100mV shunt about ±70 Amps. (Depending on shunt design and ambient temperature)
Watts: ±20,000 Watts. (With 500A shunt: when “Amps” read greater than 10.0, Watts accuracy ±1.5% ± least significant
digit.) When “Amps” value is lower, watts accuracy depends on “amps” resolution accuracy.
Amp-hours: Measurement accuracy: 0.00 to ±80,000 Amp-hours to same accuracy as amps.
Battery % Full: Measurement accuracy ±1%. Also measures overcharge. Typical system accuracy, if batteries are
charged full at least every 5 days : typical ±5%. With “efficiency” set to suggested 94% the Battery % Full
Display will be conservative (i.e. display a little lower than actual).
Meter Power requirement: About 30 mA when display is on and about 16mA when display turned off.
Efficiency factor adjustable: 60-100%
Battery capacity settable 10 to 10,000 Amp-hrs.
Serial Data: 5V output stream with all TriMetric real time data ASCII coded.
Charge criteria defined by: Filtered voltage above Vset. Filtered amps less than Iset. Time greater than Tset, all three
adjustable. (Filtered time constant: 140 seconds). See Section 6.2 for detailed description.
Power Requirement: Power from main battery B1: 9-65V, 32mA with display lighted. 16 mA with display off.
Size: TM-2030-RV: Box is 4-1/4 high x 3 x 1-3/8 inch depth with 1/2 in. mounting tabs top and bottom. (10.8 x 7.6 x 3.5 cm.)
TM-2030-A: 4-1/2 x 4-3/4 panel with circuit board 1-1/8 (max) in. deep. (11.4 x 12.1 x 2.85 cm.)
History data: retained in memory when power turned off
●Cumulative amps discharged during battery lifetime (0-999,000 amp hours) to measure battery wear
for last 5 charge/discharge cycles the following are recorded:
●Hours ago since end of cycle
●Length of cycle (hours)
●Amp hour efficiency factor for each complete cycle (to show charge efficiency of battery system)
●Minimum voltage for each cycle.
●Minimum battery %Full for each cycle
For the last 5 days:
●Maximum voltage each day
●Amps value: intended to show how close to “charged” the battery system got
When maximum voltage greater than charged setpoint volts: shows minimum amps.
When maximum voltage less than charged setpoint volts: shows amps at maximum voltage
●Maximum value percent charge returned compared to most recent discharge
6.2 How the TriMetric keeps track of battery % full. The TriMetric uses
“Capacity (P3)”, “charged setpoint volts (P1) , “charged setpoint amps percentage” (P2) and “efficiency factor”
(P10).
Initially when the TriMetric is first turned on it does not have any way of knowing how full the battery is. The
“battery % full” display will start out blank : “---” Here are the steps it uses to determine the % full
1.First the battery must be initially charged fully. When the TriMetric is charging, there are two choices you can
select for what defines “full charge”:
A: More common choice, if program P7 is in level L1, L2, L3: Two conditions must be met simultaneously:
(1) while charging, the battery voltage must exceed the “Charged setpoint voltage” (which you set by Program
P1.) and (2) the charge current (amps) must decline to below the “Charged setpoint amps” (which percentage
you set by Program P2). Note that filtered versions of “Battery voltage” and “battery amps” are used,
described in step 5, below.
B: Less common choice if program P7 is in level L4: This is typically a higher level standard for “charged”
than when in Levels 1-3. It allows additional requirements for charging time, and degree of overcharge
percentage required. It is possible to use this to define “charged” with or without the SC-2030 connected. The