DCA-20PC-4-DC1-RL-C Murata Power Solutions Inc, DCA-20PC-4-DC1-RL-C Datasheet - Page 4

• Manufacturer Part Number: DCA-20PC-4-DC1-RL-C
• Description: Digital Panel Meters 0-199.9mA input rge 3 1/2 Digit Red LED
• Manufacturer: Murata Power Solutions Inc
• Type: AC Ammetersr

Specifications of DCA-20PC-4-DC1-RL-C

• Equipment Type: AC Ammeters
• Display Type: 4 - 1/2 Digit LCD
• Dimensions: 46.38 mm L x 32.51 mm W x 4.75 mm H
• Mounting Style: Panel
• No. Of Digits / Alpha: 3-1/2
• Meter Function: DC Milliammeter
• Meter Range: 0mA To 199.9mA
• Digit Height: 9.4mm
• Power Consumption: 75mW
• Operating Temperature Range: 0°C To +60°C
• Meter Signal Input: Current
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DCA-20PC-4-DC1-RL-C

5. Replacing Analog Panel Meters: DCA-20PC ammeters can be used
6. Operation With 36 to 75Vdc Power: As shipped, all ‘-DC1’ models’
TECHNICAL NOTES
Low-side shunts: Applications that employ a single power supply to
power both the load and the ammeter, and the external shunt is located
in the negative side of the supply (commonly referred to as “low side” or
“grounded shunt”) should use ‘-DC1’ non-isolated power DCA-20PC Series
ammeters. Figures 2 and 3 depict typical low-side shunt connections.
High-side shunts: ‘-DC4’ 8-36Vdc isolated-power models must be
used in all applications that employ a single power supply to power
both the load and the ammeter and the shunt is located in the high side
(positive terminal) of the power supply. Figures 4 and 5 depict typical
high-side shunt connections. As shown in Figure 5, ‘-DC4’ isolated-
power models can also be used in applications where one supply
powers the ammeter and a second supply powers the load, but the two
supply-grounds cannot be tied together. ‘-DC4’ models include a built-in
dc/dc converter to provide a minimum 500Vdc isolation between the
shunt (TB1) and power supply (TB2) inputs.
as replacements for analog panel meters if a suitable dc voltage
is available for powering the ammeter. In retrofi t applications, it is
important to determine the shunt’s electrical confi guration (i.e., high or
low side). If any doubt exists as to the shunt’s location, use only ‘-DC4’
isolated-supply models. All rewiring must be performed with the load
and power supply de-energized.
rated operating supply range is +5 to +40Vdc. However, ‘-DC1’
models can be user confi gured for 36 to 75Vdc operation by removing
(opening) jumper J3. Please note that this modifi cation can only be
performed on ‘-DC1’ power models. Also, all ‘-DC1’ models – including
those that have been modifi ed for 36-75Vdc operation – can only be
connected in low-side, grounded-shunt applications. See Figure 3 for
Figure 4. High-Side Shunt Connections for "-DC4"
8-36Vdc Isolated-Power Models
DC4
www.murata-ps.com/dpm
7. Decimal Points: DCA-20PC ammeters’ decimal points are factory con-
fi gured for the respective full-scale input range. However, the decimal
points serve as placeholders only, they have no affect on the ammeter’s
displayed accuracy or resolution.
Figure 5. Using "-DC4" Isolated-Power Models to Maintain Isolation
LED Display, Subminiature DC Ammeters
Figure 6. Using "-DC4" Isolated-Power Models
in Low-Side Shunt Applications
Between Two Power Supplies
29 Mar 2011 MPM_DCA-20PC.B06 Page 4 of 6
DCA-20PC Series
DC4-
DC4
with Built-In Shunts
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