DCA5-20PC Series www.murata-ps.com 50mV & 100mV Input, LED-Display, Subminiature DC Ammeters Murata Power Solutions new DCA5-20PC Series dc ammeters are speci cally designed to dis- FEATURES play the output of all popular 50mV and 100mV dc-shunts. 25 input ranges provide for precision Scales and displays the output of 5A to measurement of dc currents from 1.000A to 2000A. With the exception of an external shunt, 2000A, 50mV & 100mV shunts the unit is 100% self-contained no calibration or user-supplied components are required. Completely self-contained no additional Available LED-display colors include brilliant blue, bright green, and standard red. Three power components required supply options accommodate all popular dc-supply voltages from 5V to 75Vdc, making these ammeters perfect for automotive, industrial, telecom, and marine applications Wide power supply inputs: 5 to 40Vdc for DCA5-20PC Series ammeters are housed in 1.38 x 0.88 (35mm x 22mm) rugged pack- 12V/24V/28V applications ages that feature a large, 0.37/9.4mm high, LED display. However, display visibility is not com- 48V option for telecom supplies promised in any way: the display can be easily read at distances up to 15 feet (5 meters). All Isolated-supply models for high-side shunts input and power supply connections are made by way of two screw-style terminal blocks. For added exibility, computer-style jumpers are provided for range-speci c decimal point assign- Large, easy-to-read LED display with 0.37 ments. And, to ensure trouble free installation, all models include reverse-polarity protected (9.4mm) high digits power supply inputs. Available in red, blue or green LED displays Two input con gurations are offered: grounded shunt (low-side), 5-40V-powered, red, Subminiature 1.38 x 0.88 package with green or blue LED models for cost-sensitive applications, and 8-36V isolated-supply models screw-style terminal blocks that accept high-side or oating shunts. Isolated-supply models are also available in a choice Factory calibrated to 0.1% accuracy of red, green, or blue LEDs. Since many dc ammeters are used in battery backup applications, Reverse-polarity protection power consumption for 8-36V models is typically 1 Watt, and 75mW for 5-40V models. Miniature size, wide supply inputs, and no-hassles installation make DCA5-20PC Series Over 50 models available ammeters the ideal choice for all your 50 and 100mV shunt ammeter-applications. Digital upgrade for analog meters LED DISPLAY + +5V INPUT A/D POWER CAL AMPLIFIER CONVERTER CONVERTER * 5V ** POWER GROUND 12 12 SIGNAL 12 GROUND TB2 TB1 +V V (GND) IN +IN Not included on all models * Open on isolated power models ** + EXTERNAL DC SUPPLY EXTERNAL 50 or 100mV SHUNT For full details go to www.murata-ps.com/rohs Figure 1. DCA5-20PC Series Simpli ed Schematic www.murata-ps.com/support MPM DCA5-20PC.C01 Page 1 of 6DCA5-20PC Series 50mV & 100mV Input, LED-Display, Subminiature DC Ammeters Performance/Functional Speci cations Typical at TA = +25C, unless otherwise noted. Ordering Information Min. Typ. Max. Units Input (TB1) DCA5-20PC - x - DC1 - R L - C Full Scale Input 49.5 50 50.5 mV Add -C for RoHS 400 mV Overvoltage Rating LED Color: Input Impedance 1K Ohms BL = Low-Power Blue BS = Super Blue Shunt Input to Power Supply Isolation Power Supply: GS = Standard Green DCA-20PC-X-DC4 models only 500 Vdc DC1 = +5-40Vdc, non-isolated power PGL = Low-Power Green (available with -RL, -BL, or -PGL LEDs) RL = Low-Power Red Performance DC4 = +8-36Vdc, isolated power Sampling Rate 2.5 reading per second (available with -RL, -BS, or -GS LEDs) Accuracy 0.15%FS Input Range: Use with these 50mV shunts* or with these 100mV shunts* Zero-Current Reading 001 000 001 Counts 1 5A 50A 500A 10A 100A 1000A Temperature Drift (0 = +60C) 0.2 0.4 Cnts/C 2 1A 10A 100A 1000A 2A 20A 200A 2000A Power Supply Voltage (TB2) 3 30A 300A 60A 600A 4 75A 750A 15A 150A 1500A DCA-20PC-X-DC1-XX +5.0 +40 Vdc 5 15A 150A 1500A DCA-20PC-X-DC4-XX +8 +36 Vdc 6 2A 20A 200A 2000A Power Supply Current 7 25A 250A 5A 50A 500A DCA-20PC-X-DC1-XX ( 5-40V) 10 15 mAdc 8 400A 80A 800A 9 600A 120A 1200A DCA-20PC-X-DC4-XX ( 8V) 100 150 mAdc 10 80A 800A DCA-20PC-X-DC4-XX ( 36V) 25 40 mAdc 11 1200A TB1 and TB2 Terminal Blocks *With respective decimal point user enabled. See technical note 7. Wire Size 16-22AWG, solid or stranded See www.murata-ps.com/dpm-availability for model-speci c availability. Insulation Strip Length 0.250 inches Accessories: DMS-20-CP Panel Cutout Punch Screw Tightening Torque 2.2 lbin (0.25 Nm) 20% Shunt Model Rating Use with Rated Current 20A with 12AWG solid copper wire 3020-01097-0 5A/50mV DCA5-20PC-1 15A with 14AWG solid or stranded 3020-01107-0 10A/100mV DCA5-20PC-1 copper wire 3020-01098-0 20A/50mV DCA5-20PC-6 Display 3020-01096-0 50A/50mV DCA5-20PC-1 3020-01099-0 100A/50mV DCA5-20PC-2 Display Type and Size 3 digit, 0.37 /9.4mm high red, blue or 3020-01108-0 100A/100mV DCA5-20PC-1 green LED 3020-01100-0 150A/50mV DCA5-20PC-5 Overrange Indication1 for negative Vin 3020-01101-0 200A/50mV DCA5-20PC-61 for positive Vin 3020-01102-0 300A/50mV DCA5-20PC-3 3020-01103-0 500A/50mV DCA5-20PC-1 Display Reading/Decimal Point Model dependent 3020-01104-0 800A/50mV DCA5-20PC-10 3020-01105-0 1000A/50mV DCA5-20PC-2 Physical/Environmental 3020-01106-0 1200A/50mV DCA5-20PC-11 Operating Temperature 0 +60 C A DMS-BZL4-C bezel assembly with sealing gasket is supplied with each ammeter. Storage Temperature 20 +75 C On non-isolated -DC1 models, continuous application of single-ended 400mV Humidity (non-condensing) 0 85 % inputs will not damage the ammeter. Single-ended inputs are de ned as those whose TB1-1 (IN) potential is within 0.1V of the potential on TB2-2 (-V). For Case Material Polycarbonate all models, the application of short-duration (5 seconds max.) 1V inputs will not Dimensions 1.38 W x 0.88 x 1.0 nominal damage the ammeter. Breakdown (isolation) voltage applies only to -DC4 isolated-power models. Weight 0.6 ounces (17 grams) Breakdown voltage is tested with TB1-1 tied to TB1-2 (IN shorted to +IN) and TB2-1 tied to TB2-2 (+V shorted to -V). 500Vdc is then applied between the A full-scale input voltage of 50.00mV is used to calibrate all models for their designated two shorted terminal-block pairs the max. allowable leakage current is 5uA. measurement range. The ammeters rear calibration potentiometer compensates for full-scale input variations up to 1% (49.5 to 50.5mV). Zero reading is measured with TB1-1 (IN) shorted to TB1-2 (+IN). Power supply currents noted are measured with the 50mV shunt input (TB1) at Measuring positive and negative currents (bipolar operation): In applications zero volts (display reads 000) and one decimal point enabled. where both positive and negative currents must be measured, Murata Power Solu- tions recommends using -DC4 8-36V isolated supply models. Negative current Each models full-scale display reading with a 50.0mV input is designated by the ow is denoted by the illumination of the displays negative () sign the absence of rst X in the DCA5-20PC-X-XXX model number structure. Decimal point selection a negative sign implies positive current ow. Contact MPS if you have any questions (DP1, DP2, DP3, or none) is performed by the user to suit desired amperage range. regarding bipolar operation of DCA5-20PC ammeters. Input ranges -1, -2, -3, -4, -7, -8 and -9 can accommodate 100mV shunts. For these ranges, the indicated 50mV reading is doubled when a 100mV input is applied. www.murata-ps.com/support MPM DCA5-20PC.C01 Page 2 of 6