dms-eb-rms Murata Manufacturing Co., Ltd, dms-eb-rms Datasheet

dms-eb-rms

Manufacturer Part Number

dms-eb-rms

Description

Ac-to-rms Converter Application Board For Dms-30pc/lcd Meters

Manufacturer

Murata Manufacturing Co., Ltd

Datasheet

1.DMS-EB-RMS.pdf (2 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

dms-eb-rms-C

Manufacturer:

Murata Power Solutions Inc

Quantity:

135

Current page: 1 of 2
Download datasheet (153Kb)

FEATURES

Displays true rms values of ac inputs

±0.5% accuracy for DMS-30PC-0 or DMS-

30LCD-0-5

±2% accuracy for DMS-30PC-1 or DMS-

30LCD-1-5

Also works with DMS-40PC/LCD meters (see Ap

Note 11)

www.murata-ps.com/rohs

For full details go to

(–) INPUT LO

(+) INPUT HI

REF. OUT

REF. IN

SG4

PRODUCT OVERVIEW

5V-powered DMS-30PC/LCD digital voltmeters. The meter/board combination has an input range of

0-750Vac with ±2V meters (1Vac resolution) or 0-199.9Vac with ±200mV meters (0.1Vac resolution).

A built-in screw-terminal block reliably interfaces signal and power connections. The DMS-EB-RMS

now accommodates user-installed modiﬁcations such as input-scaling resistors and isolated +5V dc/dc

converters.

cally isolated from its 5V supply (AC LOW is connected directly to 5V RETURN). When measuring any

input signal which is derived from ac power mains, a dedicated (i.e., it only powers the DMS-EB-RMS),

transformer-isolated +5V supply, with a minimum 1kV breakdown rating, must be used to power the

DMS-EB-RMS board/meter combination. When measuring ac power mains inputs, never connect the

DMS-EB-RMS’s 5V RETURN to chassis/earth ground anywhere in the system. Failing to follow these

instructions could defeat any safety grounding and will place the system +5V power supply, and all its

associated circuitry, at dangerously elevated ac-line potentials. In many applications, the MS-EB-RMS

installation is required to meet electrical code requirements. To ensure safe operation, the DMS-EB-

RMS board should only be installed and serviced by technically qualiﬁed personnel. See DMS

Application Note 11 for more details.

TB1

www.murata-ps.com

CAV

OUT

COM

AC HI

Description: The DMS-EB-RMS board allows the true rms value of ac signals to be displayed on

Power and Safety Precautions: The DMS-EB-RMS’s AC HI and AC LOW inputs are not electri-

C1 100μF

Figure 1. DMS-EB-RMS Schematic Diagram

10μF

AC-to-RMS Converter Application Board for DMS-30PC/LCD Meters

988k

AC LOW

–V

JP1

988k

+5V

1.98k

2.2μF

5V Return

GND 2

OSC

V+

OUT

BOOST

CAP+

CAP–

–V

GND

Technical enquiries email: sales@murata-ps.com, tel:

DC/DC

PS1

–V

OUT

Note: Components are user-supplied

and not part of the standard product.

2.2μF

SG1

SG2

SG3

DMS-EB-RMS

MPM_DMS-EB-RMS.B01 Page 1 of 2

+5V SUPPLY

5V RETURN

DP3

DP2

DP1

+1 508 339 3000

Related parts for dms-eb-rms

dms-eb-rms Summary of contents

Page 1

... Power and Safety Precautions: The DMS-EB-RMS’ and AC LOW inputs are not electri- cally isolated from its 5V supply (AC LOW is connected directly to 5V RETURN). When measuring any input signal which is derived from ac power mains, a dedicated (i.e., it only powers the DMS-EB-RMS), transformer-isolated +5V supply, with a minimum 1kV breakdown rating, must be used to power the DMS-EB-RMS board/meter combination. When measuring ac power mains inputs, never connect the DMS-EB-RMS’ ...

Page 2

... 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: MPM_DMS-EB-RMS.B01 Page 508 339 3000 ...

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