Counters, Panel Meters, Tachometers and Timers
Counters, Panel Meters, Tachometers and Timers
Counters, Panel Meters, Tachometers and Timers
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54.3<br />
<strong>Counters</strong>, <strong>Panel</strong> <strong>Meters</strong>, <strong>Tachometers</strong> <strong>and</strong> <strong>Timers</strong><br />
<strong>Tachometers</strong>/Ratemeters<br />
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General Specifications, continued<br />
Description<br />
Specification<br />
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DC Common (Terminal 1) Rate Inputs<br />
Input B (terminal 2) low speed input designed for<br />
contact closures to DC common<br />
Speed<br />
Min. low time<br />
Min. high time<br />
Input impedance<br />
0 to 20 Hz<br />
10 ms<br />
40 ms<br />
101 kohm<br />
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Voltage thresholds<br />
Low<br />
0–0.4 Vdc<br />
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High<br />
Max. high<br />
Input A (terminal 3) high speed input requiring a voltage<br />
source such as a current sourcing sensor or a current<br />
sinking sensor used with the provided pull up resistors<br />
Speed<br />
2.0–28 Vdc<br />
28 Vdc<br />
0 to 10 Hz <br />
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Min. low time<br />
Min. high time<br />
80 ms <br />
20 ms <br />
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Input impedance<br />
Voltage thresholds<br />
Low<br />
High<br />
Max. high<br />
2 kohm above 5 Vdc<br />
0–1.2 Vdc<br />
2.0–28 Vdc<br />
28 Vdc<br />
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Programmable Enable Input (Terminal 5)<br />
Operation<br />
Level sensitive (maintained)<br />
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Count Accuracy<br />
Operated within specifications 100%<br />
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Dimensions<br />
Approximate Dimensions in Inches (mm)<br />
Courier Series Ratemeter<br />
1.25<br />
(31.8)<br />
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2.95 (74.9)<br />
2.67 (67.8)<br />
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T/R<br />
RST<br />
1.57<br />
(39.9)<br />
Recommended<br />
<strong>Panel</strong> Cutout<br />
1.30<br />
(33.0)<br />
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Note<br />
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Times are with a 0–5.0V swing.<br />
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84 Control Products Catalog CA08102001E—August 2010 www.eaton.com
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