DMS-30PC-4/20S www.murata-ps.com 4-20mA Input 3 Digit Panel Meters with Full-Size LED Displays The DMS-30PC-4/20S Series of 4-20mA current-loop-input, 3 digit, LED display FEATURES panel meters offer an outstanding combination of electrical performance, display read- Full-size, 0.56 (14.2mm), red or green LED s ability, ease-of-use, and long-term reliability. Each of the 5 models features a large Low-power or high-intensity LED s optional (0.56 /14.2mm), red or green, LED display. Low-power or high-intensity red models are Single +5V or optional +7.5-32V supply optional. Power supplies can be a single +5V or an optional, wide-range +7.5-32V (24V nominal). All DMS-30PC-4/20S meters are constructed using Murata Power Solutions +24V Isolated-power models super-reliable, eld-proven, epoxy-encapsulated DMS-30PC digital voltmeters. The entire Low power consumption, 15mA from +5V assembly utilizes 100% soldered connections. These are the most rugged, 4-20mA input, 100 impedance, 2V loop drop panel meters in the world. DIP-switch selectable range and decimal points Gain (span) and offset (zero) adjustments are both performed with high-precision, Hundreds of different input/readout combinations 20-turn potentiometers. All decimal point and range-change settings are made on a gold- plated, vibration-resistant, DIP switch there are no cumbersome solder gaps or jumpers Vibration-resistant package Reliable screw-terminal to contend with. Connections to the current loop and the power source are both made on a input connections rugged, four-position, screw-type terminal block . High-quality, 20-turn, gain/span and zero/offset adjust The DMS-30PC-4/20S s user-friendly design accommodates virtually hundreds potentiometers of different input-current/output-reading combinations. This eliminates the majority of Miniature size: 2.17 x 0.92 x 1.02 requirements for more costly, long-lead-time, factoryspecial especially in applications 55mm x 23mm x 27mm requiring several different-range meters. A bezel assembly, featuring secure screw fasten- ers and an EPDM rubber gasket, is available for applications requiring moisture and/or dust resistance. +5V DMS-30PC-1 3 DIGIT A/D DATA CONVERTER R3 R7 ZERO GAIN DP1 DP2 DP3 ADJUST ADJUST BAND-GAP REFERENCE CIRCUIT N.C. +5V ON (SW1) DIP +5V SWITCHES 1 2 34 5 6 78 VOLTAGE CONVERTER 1 TB1 TB2 1 2 1 2 SG9 + + +V V For full details go to 4-20mA V is not connected to meter ground POWER SUPPLY www.murata-ps.com/rohs LOOP INPUT INPUT on -I suf x models. www.murata-ps.com/support MPM DMS-30PC-420S.C01 Page 1 of 4DMS-30PC-4/20S 4-20mA Input 3 Digit Panel Meters with Full-Size LED Displays Performance/Functional Speci cations Ordering Information Typical at TA = +25C, unless otherwise noted. DMS-30PC-4/20S-5RS-C +5V supply, standard-intensity red LED s DMS-30PC-4/20S-5GS-C +5V supply, standard-intensity green LED s Current Loop Input Min. Typ. Max. Units DMS-30PC-4/20S-5RL-C +5V supply, low-power red LED s Full Scale Input Range +3.5 +22 mA DMS-30PC-4/20S-5RH-C +5V supply, high-intensity red LED s Input Impedence 100 Ohms DMS-30PC-4/20S-24RL-C +7.5V to +32V supply, low-power red LED s DMS-30PC-4/20S-24RS-I-C +24V isolated supply, standard-intensity Voltage Drop 2.0 Volts red LEDs Overcurrent Protection 0.15 0.3 mA DMS-30PC-4/20S-24RH-I-C +24V isolated supply, high-intensity red LEDs DMS-30PC-4/20S-24BS-I-C +24V isolated supply, high-intensity blue LEDs Performance DMS-30PC-4/20S-24GS-I-C +24V isolated supply, standard-intensity Sampling Rate 2.5 reading per second green LEDs See www.murata-ps.com/dpm-availability for model-speci c availability. Accuracy (1 minute warm-up) 0.05%FS 1 Count ACCESSORIES Temperature Drift 0.15 0.3 Cnts/C DMS-BZL1-C Panel-mount bezel assembly Power Supply Requirements DMS-BZL2-C Panel-mount bezel with sealing gasket DMS-30PC-4/20S-5RS +4.75 to +5.25Vdc at 225mA max. DMS-30-CP Panel cutout punch DMS-30PC-4/20S-5GS +4.75 to +5.25Vdc at 225mA max. A panel-mount retaining clip is supplied with each model. DMS-30PC-4/20S-5RH +4.75 to +5.25Vdc at 225mA max. DMS-30PC-4/20S-5RL +4.75 to +5.25Vdc at 20mA max. DIP-Switch Settings Table DMS-30PC-4/20S-24RL +7.5 to +32Vdc at 30mA max. Display Reading SW1 SW2 SW3 SW4 DMS-30PC-4/20S-24XX-I (models) +21.6 to +26.4Vdc at 60mA max. 1. 000 to 100-300 On On On Off Display 2. 000 to 400-600 Off On Off Off Display Type and Size 3 digit, 0.56 /14.2mm high LED 3. 000 to 700-1999 On Off Off Off Polarity Indication for negative readings 4. 100 On On On Off Overrange Indication1 for negative inputs 5. 200 to 300 On On Off Off1 for positive inputs 6. 400 to 600 On Off Off Off Physical/Environmental 7. 700 to 1999 Off Off Off On Operating Temperature 0 +60 C When looking up DIP-switch settings in the Table and the desired display read- Storage Temperature 40 +75 C ings happen to fall between two switch settings, try performing the adjustments Humidity (non-condensing) 0 95 % with both settings to determine which one offers the better settability. Please Case Material Polycarbonate keep in mind that the DMS-30PC meter (from which the DMS-30PC-4/20S is Weight 1 ounces (28 grams) derived) has an accuracy speci cation of 2 counts (max.). Thus, it may not always be possible to obtain the exact desired display reading. Input Grounding: Except for the-suf x models which feature isolated current OPERATING AND SETUP INSTRUCTIONS loop inputs, all other DMS-30PC-4/20S meters are supplied with their 4-20mA negative-input terminals (TB1-2,) internally connected to their power supply As shipped, the DMS-30PC-4/20S is factory calibrated to read000 ground terminal (TB2-2, -V). This single-ended input con guration is compatible with most grounded-referenced 4-20mA transmitters. for a 4mA input and1999 for a 20mA input. The following worst-case Applications in which the DMS-30PC-4/20S and its associated 4-20mA procedure assumes the DMS-30PC-4/20S is completely mis-adjusted, transmitter are connected to a common ground and the transmitter drives two or i.e., both potentiometers and the DIP switches are randomly set. more loads (for example, the meter in series with a PLC) must have the meter 1. Set R7 (gain/span adjust) and R3 (zero/offset adjust) fully clockwise, connected as the rst device in the current loop, that is, closest to the system ground (see Figure 2). If this is not possible and/or the meter must be connected roughly 20 turns, and place SW1-SW8 to OFF (down position). in the middle of the current loop, then -I suf x models must be used to provide 2. Set SW1 to ON (up position). See DIP switch setting 3. the required isolation between the meters current loop input and the power sup- ply ground -). See Figures 2, 3, 4, and 5 for typical loop connections. 3. Apply a precision 4mA input, with proper polarity, and adjust R3 until the meter s display reads000 . 4. Apply a precision 20mA and adjust R7 until the display reads1999 . Repeat 3 and 4 to make sure adjustments do not affect one another. 5. If desired, select the appropriate decimal point by setting either SW5, SW6 or SW7 to ON (DP1, DP2 or DP3 respectively). NOTE: If a display reading other than000 to1999 is desired, refer to the DIP-Switch Settings Table for SW1-SW4 settings. www.murata-ps.com/support MPM DMS-30PC-420S.C01 Page 2 of 4