DMS-30PC-4/20S
4-20mA Input 3�½ Digit Panel Meters
with Full-Size LED Displays
Performance/Functional Specifications
Typical at T
A
= +25°C, 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
%
3�½ 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 read-
ings 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 sup-
ply 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
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