DMS-20PC-0/5-5RH-C View Datasheet(PDF) - Murata Power Solutions

Part Name

Description

MFG CO.

DMS-20PC-0/5-5RH-C

0-5V and 0-10V Input 3½ Digit, LED Display Process Control Monitors

Murata Power Solutions 

1 2 3 4

Performance/Functional Specifications

Typical at TA = +25°C, unless otherwise noted.

Inputs

Min. Typ. Max. Units

Full Scale Input Range~

4.9

5.0

5.1 Volts

Input Impedence

100

–

140 kΩ

Overvoltage Protection 

–

–

±40 Volts

Performance

Sampling Rate

2.5 reading per second

Accuracy (1 minute warm-up):

±0.05%FS ±1 Count

Temperature Drift (0 to +60°C)

– ±0.15 ±0.3 Cnts/°C

Power Supply Requirements

DMS-20PC-0/5-5RS (@90mA max.) +4.75 +5.00 +5.25 Volts

DMS-20PC-0/5-5GS (@120mA max.) +4.75 +5.00 +5.25 Volts

DMS-20PC-0/5-5RL (@15mA max.) +4.75 +5.00 +5.25 Volts

DMS-20PC-0/5-5RH (@90mA max.) +4.75 +5.00 +5.25 Volts

DMS-20PC-0/5-24RS (@15mA max.) +4.75

– +40.0 Volts

Display

Display Type and Size

3½ digit, 0.37"/9.4mm high LED

Polarity Indication

"–" for negative VIN

Overrange Indication

"–1_ _ _ " for negative inputs

"1_ _ _ " for positive inputs

Physical/Environmental

Operating Temperature

0

–

+60

°C

Storage Temperature

–20

–

+75

°C

Humidity (non-condensing)

0

–

95

%

Case Material

Polycarbonate

Weight

0.6 ounces (17 grams)

~ The DMS-20PC-0/5 can also be used in most 0-10V applications. See the section

on 0-10V inputs for more information. See Note 3 on Table 1.

 INPUT LO (TB1 "–LO") is internally connected to the power return (TB2 "–V").

Overvoltage specifications apply to the INPUT HI (TB1 "+HI") connection.

Ordering Information

DMS-20PC-0/5-5RS-C +5V supply, standard-intensity red LED's

DMS-20PC-0/5-5GS-C +5V supply, standard-intensity green LED's

DMS-20PC-0/5-5BS-C +5V supply, bright blue LED's

DMS-20PC-0/5-5RL-C +5V supply, low-power red LED's

DMS-20PC-0/5-5RH-C +5V supply, high-intensity red LED's

DMS-20PC-0/5-24RL-C +5V to +40V supply, low-power red LED's

DMS-PS1-CM-C

+5V/1.0A AC/DC power supply module

DMS-PS4-CM-C

+24V/0.45A AC/DC power supply module

DMS-PS7-CM-C

+24V/0.7A AC/DC power supply module

DMS-20-CP

Panel cutout punch

Note: A DMS-BZL4 bezel assembly with a sealing gasket is supplied with each meter.

DMS-20PC-0/5 Series

0-5V and 0-10V Input 3½ Digit, LED

Display Process Control Monitors

TECHNICAL NOTES

1. Input Configuration: The DMS-20PC-0/5 has its input low terminal

(TB1 "LO") internally connected to the power supply ground terminal

(TB2 "–V"). This connection effectively places the meter's input in a

single-ended configuration. In some applications, single-ended inputs

can cause ground-loop induced errors (the meter's display becomes

unstable or bounces). This occurs because the LED drive currents

flow through both the –V terminal and the signal LO terminal.

If suspected ground-loop errors are encountered, and the input signal

LO terminal is externally connected to –V somewhere else in the

system, try removing the connection to TB1 "LO". Inputs which have

no ground-return connection to –V (commonly referred to as "floating

inputs") must have their most negative potential tied to TB1 "LO".

Please consult DATEL for more information.

Applications which require electrical isolation between the input

signal source and the system power supply must use a separate

transformer-isolated supply to power the meter.

2. Panel Mounting: In most standard through-the-panel installations,

the DMS-20PC-0/5 must be secured to the panel with DMS-BZL4

bezel assemblies (see the Mechanical Specifications section for more

information).

OPERATING AND SETUP INSTRUCTIONS

As shipped, the DMS-20PC-0/5 is factory calibrated to read "000" for

a 0.0V input and "1999" for a 5.0V input. The following worst-case

procedure assumes the DMS-20PC-0/5 is completely mis-adjusted, i.e.,

both potentiometers and the DIP switches are randomly set.

1. Set R7 (full scale span/gain adjust) and R3 (zero/offset adjust) fully

clockwise, roughly 22 turns, and place SW1-SW8 to OFF (down

position).

2. Select DIP switch setting #1 in Table 1.

3. Apply a precision 0.0V input and adjust R3 until the meter's display

reads "000".

4. Apply a precision 5.0V input and adjust R7 until the meter's display

reads "1999". Repeat steps 3 and 4 to make sure the adjustments

do not affect one another.

5. Select the appropriate decimal point by setting SW6, SW7 or SW8 to

ON (DP1, DP2 or DP3 respectively).

NOTE: The "000" to "1999" display readings referred to in the

instructions above are for illustrative purposes only. If other display

readings such as "000" to "1200" are desired, refer to the DIP-

Switch Settings Tables for SW1-SW4 settings. (SW5 is reserved for

future use, it has no affect on display operation.) The initial setting

of R3 and R7 fully clockwise is recommended in the adjustment

procedure for all the following examples.

www.murata-ps.com

Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000

MPM_DMS20pc_5V.B04 Page 2 of 4

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