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DMS-30PC-4/20S
4-20mA Input 31/2 Digit Panel Meters with Full-Size LED Displays
FEATURES
Full-size, 0.56" (14.2mm), red or green LED's Low-power or high-intensity LED's optional Single +5V or optional +7.5-32V supply +24V Isolated-power models Low power consumption, 15mA from +5V 100 impedance, 2V loop drop DIP-switch selectable range and decimal points Hundreds of different input/readout combinations Vibration-resistant package; Reliable screw-terminal input connections High-quality, 20-turn, gain/span and zero/offset adjust potentiometers Miniature size: 2.17" x 0.92" x 1.02" 55mm x 23mm x 27mm
The DMS-30PC-4/20S Series of 4-20mA current-loop-input, 31/2 digit, LED display panel meters offer an outstanding combination of electrical performance, display readability, ease-of-use, and long-term reliability. Each of the 5 models features a large (0.56"/14.2mm), red or green, LED display. Low-power or high-intensity red models are 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 DATEL's super-reliable, fieldproven, epoxy-encapsulated DMS-30PC digital voltmeters. The entire assembly utilizes 100% soldered connections. These are the most rugged, 4-20mA input, panel meters in the world. Gain (span) and offset (zero) adjustments are both performed with high-precision, 20-turn potentiometers. All decimal point and range-change settings are made on a goldplated, vibration-resistant, DIP switch; there are no cumbersome solder gaps or jumpers to contend with. Connections to the current loop and the power source are both made on a rugged, four-position, screw-type terminal block. The DMS-30PC-4/20S's user-friendly design accommodates virtually hundreds of different input-current/output-reading combinations. This eliminates the majority of requirements for more costly, long-lead-time, factory "specials"- especially in applications requiring several different-range meters. A bezel assembly, featuring secure screw fasteners and an EPDM rubber gasket, is available for applications requiring moisture and/or dust resistance.
+5V
DMS-30PC-1
31/2 DIGIT A/D CONVERTER
DATA
R3 ZERO ADJUST
R7 GAIN ADJUST
DP1
DP2
DP3
BAND-GAP REFERENCE CIRCUIT ON +5V 1 2 3 4 5 6 7
N.C. +5V (SW1) DIP SWITCHES VOLTAGE CONVERTER 1
8
TB1
1
2 SG9
TB2
1
2
+
-
+
-
For full details go to www.murata-ps.com/rohs
4-20mA LOOP INPUT
-V is not connected to meter ground on `-I' suffix models.
+V -V POWER SUPPLY INPUT
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MPM_DMS-30PC-420S.B01 Page 1 of 4
DMS-30PC-4/20S
4-20mA Input 31/2 Digit Panel Meters with Full-Size LED Displays
Performance/Functional Specifications
Typical at TA = +25C, unless otherwise noted. Current Loop Input Full Scale Input Range Input Impedence Voltage Drop Overcurrent Protection Performance Sampling Rate Accuracy (1 minute warm-up) Temperature Drift Power Supply Requirements DMS-30PC-4/20S-5RS DMS-30PC-4/20S-5GS DMS-30PC-4/20S-5RH DMS-30PC-4/20S-5RL DMS-30PC-4/20S-24RL DMS-30PC-4/20S-24XX-I (models) Display Display Type and Size Polarity Indication Overrange Indication Physical/Environmental Operating Temperature Storage Temperature Humidity (non-condensing) Case Material Weight 0 -40 0 - - - +60 +75 95 C C % 31/2 digit, 0.56"/14.2mm high LED "-" for negative readings "-1_ _ _ " for negative inputs "1_ _ _ " for positive inputs +4.75 to +5.25Vdc at 225mA max. +4.75 to +5.25Vdc at 225mA max. +4.75 to +5.25Vdc at 225mA max. +4.75 to +5.25Vdc at 20mA max. +7.5 to +32Vdc at 30mA max. +21.6 to +26.4Vdc at 60mA max. - 2.5 reading per second 0.05%FS 1 Count 0.15 0.3 Cnts/C ACCESSORIES DMS-PS4-C DMS-PS7-C DMS-BZL1-C DMS-BZL2-C DMS-30-CP Min. +3.5 - - - Typ. - 100 - 0.15 Max. +22 - 2.0 0.3 Units mA Ohms Volts mA DMS-30PC-4/20S-5RS-C DMS-30PC-4/20S-5GS-C DMS-30PC-4/20S-5RL-C DMS-30PC-4/20S-5RH-C DMS-30PC-4/20S-24RL-C DMS-30PC-4/20S-24RS-I-C DMS-30PC-4/20S-24RH-I-C DMS-30PC-4/20S-24BS-I-C DMS-30PC-4/20S-24GS-I-C +5V supply, standard-intensity red LED's +5V supply, standard-intensity green LED's +5V supply, low-power red LED's +5V supply, high-intensity red LED's +7.5V to +32V supply, low-power red LED's +24V isolated supply, standard-intensity red LED's +24V isolated supply, high-intensity red LED's +24V isolated supply, high-intensity blue LED's +24V isolated supply, standard-intensity green LED's
Ordering Information
+24V/0.45A AC/DC power supply module +24V/0.7A AC/DC power supply module Panel-mount bezel assembly Panel-mount bezel with sealing gasket Panel cutout punch
A panel-mount retaining clip is supplied with each model.
DIP-Switch Settings Table
Display Reading
1. 2. 3. 4. 5. 6. 7. 000 to 100-300 000 to 400-600 000 to 700-1999 100 200 to 300 400 to 600 700 to 1999
SW1
On Off On On On On Off
SW2
On On Off On On Off Off
SW3
On Off Off On Off Off Off
SW4
Off Off Off Off Off Off On
Polycarbonate 1 ounces (28 grams)
When looking up DIP-switch settings in the Table and the desired display readings happen to fall between two switch settings, try performing the adjustments with both settings to determine which one offers the better settability. Please keep in mind that the DMS-30PC meter (from which the DMS-30PC-4/20S is derived) has an accuracy specification of 2 counts (max.). Thus, it may not always be possible to obtain the exact desired display reading.
Input Grounding: Except for the "-I"suffix models which feature isolated current 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 ground terminal (TB2-2, "-V"). This single-ended input configuration is compatible with most grounded-referenced 4-20mA transmitters. Applications in which the DMS-30PC-4/20S and its associated 4-20mA transmitter are connected to a common ground and the transmitter drives two or more loads (for example, the meter in series with a PLC) must have the meter connected as the first 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 in the middle of the current loop, then'-I' suffix models must be used to provide the required isolation between the meter's current loop input and the power supply ground ("-V"). See Figures 2, 3, 4, and 5 for typical loop connections.
OPERATING AND SETUP INSTRUCTIONS
As shipped, the DMS-30PC-4/20S is factory calibrated to read "000" for a 4mA input and "1999" for a 20mA input. The following worst-case procedure assumes the DMS-30PC-4/20S is completely mis-adjusted, i.e., both potentiometers and the DIP switches are randomly set. 1. Set R7 (gain/span adjust) and R3 (zero/offset adjust) fully clockwise, roughly 20 turns, and place SW1-SW8 to OFF (down position). 2. Set SW1 to ON (up position). See DIP switch setting #3. 3. Apply a precision 4mA input, with proper polarity, and adjust R3 until the meter's display reads "000". 4. Apply a precision 20mA and adjust R7 until the display reads "1999". 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 than "000" to "1999" is desired, refer to the DIP-Switch Settings Table for SW1-SW4 settings.
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MPM_DMS-30PC-420S.B01 Page 2 of 4
DMS-30PC-4/20S
4-20mA Input 31/2 Digit Panel Meters with Full-Size LED Displays
Examples
1. Desired display readings are: 4mA ="0.00" 20mA = "2.00"
1 2 3 4 ON
+24V
+
(TB1-1)
+V (TB2-1)
+
DMS-30PC-4/20S-24RL
5
6
7
8
LOOP-POWERED TRANSMITTER
Use DIP-switch setting #1 and enable decimal point DP2 via SW6. Apply 4mA and adjust R3 so the display reads "0.00". Apply 20mA and adjust R7 so the display reads "2.00". 2. Desired display readings are: 4mA = "-100" 12mA = "000" 20mA = "100"
ON
-
4-20mA N.C. (TB1-2)
-
-V (TB2-2) 24V GROUND
1
2
3
4
5
6
7
8
Figure 3. Typical Connections for Loop-Powered Transmitters Driving Single-Ended Meters.
Use DIP-switch setting #4. Apply 12mA and adjust R3 so the display reads "000". Apply 20mA and adjust R7 so the display reads "100". Apply 4mA and the display should read "-100". For these display readings, no decimal points are used. Set SW5, SW6 and SW7 to OFF. 3. Desired display readings are: 4mA = ".000" 12mA = ".250"
1 2 3 4 ON
+24V +V (TB2-1) DMS-30PC-4/20S-24RL-I (TB2-2) -V
5
6
7
8
+ +
SINGLE-ENDED TRANSMITTER
This example is not as straightforward as the previous two. Notice that 12mA is exactly halfway between 4mA and 20mA. If we assume the input could go up to 20mA, the display reading would be: 2 x .250 or ".500". From the table, we can select DIP-switch setting #2 and enable DP1 via SW5. Apply 4mA and adjust R3 so the display reads ".000". Apply 12mA and adjust R7 so the display reads ".250".
+ (TB1-1)
4-20mA
(TB1-2)
-
+
PLC or OTHER SINGLE-ENDED DEVICE
-
24V GROUND
4-20mA
-
Figure 4. Typical Connections for Isolated-Supply Meters in Series with an Auxiliary Device
CONNECTION DIAGRAMS
+24V
+24V
+5V
+ +
SINGLE-ENDED TRANSMITTER (TB1-1) 4-20mA
+V (TB2-1)
+ +
LOOP TRANSMITTER (TB1-1) 4-20mA
+V (TB2-1)
+
DMS-30PC-4/20S-24RL
+
DMS-30PC-4/20S-24RL
-
24V GROUND
(TB1-2)
-
-V (TB2-2)
-
24V GROUND
(TB1-2)
-
-V (TB2-2) 5V GROUND
Figure 2. Typical Connections for Single-Ended Transmitters Driving Single-Ended +24V Powered Meters.
Figure 5. Typical Connections for +5V Powered Meters. Note that 5V Ground and 24V Ground are Tied Together Inside the Meter.
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MPM_DMS-30PC-420S.B01 Page 3 of 4
DMS-30PC-4/20S
4-20mA Input 31/2 Digit Panel Meters with Full-Size LED Displays
MECHANICAL DIMENSIONS: Inches (mm) TOLERANCES: WIRE SIZE: STRIPPING LENGTH: 2 PL DEC 0.02 (0.51) 3 PL DEC 0.010 (0.254) 18 to 26 AWG (Solid or stranded) 0.20" (5.08mm)
1 1.02 (25.9)
1.33 (33.8)
0.040 (1.02)
2.09 (53.09) 2.17 (55.12)
Zero/Offset Adjust
DIP Switches
ON
1 Depth dimension for the DMS-30PC-4/20S-24RL model only.
Back View
12
R3 Zero Adjust
D1 R10
1 SW1
R12 R6
1
2
3
4
5
6
7
8
SG10 R9 R1 R8
TB1 + -
TB2 + -
U2
R7 Gain Adjust
SG9
1
R5 R4 R2
2
1
2
Gain/Span Adjust
+-+-
Loop Input
Power Input
DP1 (SW5)
DP2 (SW6)
OPTIONAL BEZEL (DMS-BZL1 and DMS-BZL2)
#2-56 INSERT 0.156 (3.96) DEEP 0.187 (4.75)
FRONT VIEW
2.55 (64.77)
BEZEL
RECOMMENDED DRILL AND PANEL CUTOUT DIMENSIONS
INTERNAL CORNER RADII: 0.032 (0.81) MAX. 0.116 (2.95)
RETAINING CLIP INSTALLATION
1.07 (27.18)
PANEL CUTOUT
0.878 (22.30)
2.118 (53.80)
(R) (R)
2.35 (59.69) 0.093 (2.362) DIAMETER (4 REQUIRED) ONLY WHEN USING OPTIONAL BEZEL ASSEMBLY 0.096 (2.44)
A panel-mount retaining clip is supplied with all models
USA: Canada: UK: France: Germany: Japan: China: Singapore: Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Munchen, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 and 14001 REGISTERED
11/25/08
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. (c) 2008 Murata Power Solutions, Inc.
www.murata-ps.com
MPM_DMS-30PC-420S.B01 Page 4 of 4
(R)
(R)
MADE IN USA
MADE IN USA
1.270 (32.26)
DMS-30PC-4/20S
DP3 (SW7)
(R)
(R)
MADE IN USA
0.04 (1.02)
0.84 (21.34) 0.92 (23.37)
Front View
PANEL
OPTIONAL GASKET
PANEL

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