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参数资料
| 型号： | DMS-EB2-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 3/4页 |
| 文件大小： | 0K |
| 描述： | APPLICATION BRD FOR DMS-20 METER |
| 标准包装： | 12 |
| 系列： | * |
| 产品目录页面： | 2856 (CN2011-ZH PDF) |
| 其它名称： | 811-1124 |
DMS-EB2
Multi-Purpose Application Board
for DMS-20PC/LCD Meters
R1
TO-3-style tab
points to left
U1
1
12
R3
SG10
To measure input voltages
greater than ±100Vdc,
open SG10 and also cut
these two etch paths.
SG1
Figure 4. Installing R1
4. Calibrate the meter using a known voltage source. Adjust the internal
Figure 3. Installing U1
4. Calibration Adjustment: The DMS-EB2 has provisions for adjusting the
calibration of the DMS-20 meter. Calibration adjustment is useful when
an input divider (using R1 and R2) is necessary to scale the input voltage.
The calibration potentiometer allows "tweaking" of the display reading.
Using the calibration potentiometer
Adjust the calibration pot on the back of the meter as desired. The
adjustment range is only 3/4 of a turn. Do not force the pot past its end
stops.
5. Differential Input Signals (Signal Referenced to Power Source): Open
SG5. Apply the input signal to pin 1, (+) IN HI, and pin 2, (–) IN LO, of J1.
NOTE: Common mode voltage must not exceed ±2Vdc.
6. Measuring Input Voltages Greater than 1.999Vdc (Use DMS-20PC/
LCD-1 Only):
CAUTION: Do not exceed 250Vdc input signal.
1. Open SG10. For applications in which input voltages exceed ±100Vdc,
also cut the 2 adjoining traces.
2. Calculate values for R1 and R2 as follows:
R2 = (FSI x R1) / ( |V IN | - FSI)
Where:
FSI = The attenuated voltage, between the meter's (–) IN LO and (+) IN
HI pins, needed to achieve the desired display readings
V IN = Input voltage at J1 (beween pins 1 and 2)
A typical value for R1 is 1M . The sum of R1 + R2 should be
between 50k and 10M .
3. Enable DP3 by soldering SG3.
www.murata-ps.com
gain potentiometer to compensate for variations in R1 and R2.
Example
V IN is 199.9Vdc, and the display reading must be "199.9".
1. Assume R1 = 1.0M
2. R2 = (FSI x R1) / ( |V IN | - FSI)
R2 = (1.999 x 1,000,000) / (199.9 - 1.999)
R2 = 10101.01 Ω or 10k Ω
7. Current Measurements (Use 200mV Model, DMS-20PC/LCD-0): The
following instructions are for measuring current derived from the DMS-
20PC/LCD's power source. When measuring current that is ?oating with
respect to J1, pin 6 (GROUND), leave SG5 closed.
CAUTION: Do not exceed 1 Ampere input current.
1. Install R2 (R2 = FSR / (I MAX x 10000)) where FSR is the
desired reading (0 -1999) and I MAX is between 0 -1 Ampere.
2. Open SG5.
3. Apply input signal (current) to (+)IN HI and (–) IN LO.
4. Adjust internal gain pot for desired full scale readings.
5. Enable decimal points using either SG1, SG2 or SG3.
Example
A 1.0 Ampere input must read "1.000" on the display.
R2 = 1000 / (1 x 10000)
R2 = 0.1 Ohm
Enable DP1 via SG1 for reading of 1.000
8. Displaying DMS-20PC/LCD's Power Source
(Use DMS-20PC/LCD-2, 5V-Powered Models Only):
1. If the power source is higher than 5Vdc, be sure to install U1 and cut
SG4. See Battery Operation section and Technical Note 4.
2. Solder a short piece of jumper wire across the two holes labeled J2.
3. Close SG2 to enable DP2.
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MPM_DMS-EB2.E01 Page 3 of 4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DMS-EB-AC/DC | 功能描述:数字面板表 AC Primary Power Application Board RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-EB-AC/DC-C | 功能描述:数字面板表 AC Primary Power Application Board RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-EB-C | 功能描述:数字面板表 Multipurpose board for DMS-30/40 meters RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-EB-DC/DC | 功能描述:数字面板表 DC-DC Converter and Isolation Board RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-EB-DC/DC-C | 功能描述:数字面板表 DC-DC Converter and Isolation Board RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
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