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DMS-EB-ACDC View Datasheet(PDF) - Murata Manufacturing

Part Name
Description
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DMS-EB-ACDC Datasheet PDF : 4 Pages
1 2 3 4
DMS-EB-AC/DC
100-264Vac Power Supply
Accessory Board for DMS-30PC/LCD Panel Meters
APPLICATIONS
Example
Using a DMS-30-1 meter (+/-2V range), Vin is 0-5Vdc and the display
reading must be “000” to “1500”
1. Assume R1 = 1.0MΩ.
2. R2 = (FSI x R1) / ( |Vin| - FSI)
R2 = (1.500 x 1,000,000) / (5.0 - 1.500)
R2 = 428,571Ω or 432kΩ
3. Calibrate the meter using a known voltage source. Adjust R4 to
compensate for tolerances in R1 and R2.
4. DC Current Measurements (Use +/-200mV Range DMS-30-0
Meters):
When using R2 location for a dc current-shunt, please note that the
pc-board copper traces which short out R1 can only carry currents
up to 0.2A (200mA). However, dc currents up to 2A can be accommo-
dated if a 20AWG jumper wire is soldered in location R1. Be sure R2
has a sufficient power rating to safely carry the full load current. Refer
to DMS Application Note 6 for more information on dc ammeters.
1. Install R2: R2 = FSR / (IMAX . x 10000) where FSR is the desired
meter reading (0 up to 1999, disregarding any decimal points), and
IMAX is current in Amperes.
2. Configure the DMS-EB for span adjust using the procedure previ-
ously outlined for the DMS-30-0 (+/-200mV range).
3. Apply the input signal (current) to TB1 (+) HI and (–) LO.
4. Adjust R4 for desired full scale readings.
5. Enable the appropriate decimal point using SG1, SG2, or SG3.
Example
Using a DMS-30-0 meter, a 0.100 Ampere input must read “100.0”
mA on the display.
R2 = 1000 / (0.1 x 10000)
R2 = 1 Ohm
Enable DP3 via SG3 for a display reading of “100.0.”
12
SG10
R5
SG14
SG7
SG8
SG4 DP4
SG13
SG6 TB1
R4
SG11
R3
SG12
SG9
1
2
HI(+) LO(–)
Figure 3. R4 and R5 Installation
R1
12
R2
SG14
SG7
SG8
SG4 DP4
SG13
SG6 TB1
SG11
R3
SG12
SG9
1
2
HI(+) LO(–)
Figure 4. R1 and R2 Installation
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
12/30/08
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.
© 2008 Murata Power Solutions, Inc.
USA:
Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com
Canada: Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com
France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com
Germany: München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com
Japan:
Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com
Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com
China:
Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com
Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MPM_DMS-EB-AC/DC.B01 Page 4 of 4
 

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