DMS-40PC-4 MURATA-PS [Murata Power Solutions Inc.], DMS-40PC-4 Datasheet - Page 3

• Manufacturer Part Number: DMS-40PC-4
• Manufacturer: MURATA-PS [Murata Power Solutions Inc.]

(4) Input Grounding: Except for the “-I” suffix models which feature
Table 2. Decimal Point Settings
SW3
DP1
Since the DMS-40PC-4/20S uses extremely-stable thin-film chip resis-
tors, periodic re-calibration is typically required only in environmentally
demanding applications where shock, vibration and temperature
extremes may have a detrimental affect on the 20-turn potentiometers.
isolated current loop inputs, all other DMS-40PC-4/20S meters are
supplied with their 4-20mA negative-input terminals (TB1-2, “-”) inter-
nally 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-40PC-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 is 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 connection scheme 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.
Display Reading
1. 0000
2. 0000
3. 0000
4. 0000
5. 0000
6. 0000
7. 0000
8. 0000
9. 0000
10. 0000
11. 0000
12. 0000
13. 0000
14. 0000 11000-12000
15. 0000 12000-13000
16. 0000 13000-14000
17. 0000 14000-15300
18. 0000 15300-16300
19. 0000 16300-17800
20. 0000 17800-20000
4mA
SW4
DP2
2500-2800
2800-3200
3200-3850
3850-4300
4300-4900
4900-5600
5600-6200
6200-6800
6800-7750
7750-8600
8600-9850
9850-11000
2250-2500
20mA
Switch S2
SW5
DP3
SW1
Off
Off
Off
Off
On
On
On
On
Off
Off
On
On
On
On
On
On
On
On
Off
Off
www.murata-ps.com
SW2
On
On
On
On
Off
Off
Off
Off
Off
Off
On
On
On
On
Off
Off
Off
Off
Off
Off
Table 1. DIP-Switch Settings
SW6
DP4
SW3
Switch S1
On
On
On
On
On
On
On
On
On
On
Off
Off
On
On
Off
Off
On
On
On
On
SW4
On
On
On
On
On
On
On
On
On
On
On
On
Off
Off
On
On
Off
Off
Off
Off
OPERATING AND SETUP INSTRUCTIONS
Using the Decimal Point Settings Table as a guide, the DMS-40PC-
4/20S's decimal points can be enabled to suit the user's particular readout
requirements. Place the selected decimal point's DIP switch to the ON po-
sition (up) to illuminate the decimal point. The decimal points are merely
placeholders, that is, they can all be illuminated or all turned off; they have
no affect on the meter's operation and/or display readings.
The following procedure must be performed as the first re-calibration step
every time DIP switches S1 and S2 are changed to select a new display
range. The following procedure also assumes the DMS-40PC-4/20S is
initially completely mis-adjusted, i.e., both potentiometers and both DIP
switches S1 and S2 are randomly set. When performing switch settings,
make sure that the DIP switch's small actuator is pushed up as far as it
will go to ensure that the switch is truly set to the ON (closed) position.
1. Set R7 (gain/span adjust) and R3 (zero/offset adjust) fully
2. Apply a precision 4mA input with proper polarity and adjust R3
3. Apply a precision 20mA input and adjust R7 (bottom 20-turn
SW5
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
Off
Off
Off
Off
On
On
On
On
clockwise, roughly 20 turns, then using the settings found in the
selected range, place the DIP switches on S1 and S2 to the
appropriate positions for the desired display reading.
(top 20-turn potentiometer) until the meter's display reads "0000".
potentiometer) until the display reads the maximum desired reading.
Repeat steps 2 and 3 to make sure the adjustments did not affect
one another.
4½ Digit, 4-20mA Input, LED Display Meters
SW6
Technical enquiries email: [e-mail], tel:
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
DMS-40PC-4/20S
SW1
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
Switch S2
MPM_DMS-40PC-420.D02 Page 3 of 6
SW2
On
On
Off
Off
On
On
Off
Off
On
On
On
On
On
On
On
On
On
On
On
On
[phone]