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参数资料
| 型号： | HWK70000 |
| 厂商： | Red Lion Controls |
| 文件页数： | 2/4页 |
| 文件大小： | 0K |
| 描述： | CABLE ASSEM FOR MDM SERIES |
| 标准包装： | 1 |
| 系列： | * |
| 附件类型： | 缆线 |
| 适用于相关产品： | MDMU 系列 |
| 产品目录页面： | 2853 (CN2011-ZH PDF) |
| 其它名称： | RLC70 |
SPECIFICATIONS (Cont’d)
13. COMMON MODE REJECTION RATIO : 70 dB.
14. INPUT IMPEDANCE : 1000 M ?
15. TEMPERATURE EFFECTS:
Operating Range : 0 ° to 70 ° C
Storage Temperature : -40 ° to 80 ° C
Temperature Coefficient : 100 ppm/ ° C
16. CONSTRUCTION: High impact black plastic case. (Mounting clip
included with panel mount models.)
17. RELATIVE HUMIDITY: Less than 85% RH.
18. WEIGHT:
Reflective Panel Mount : 0.76 oz (11 g);
Reflective PCB Mount : 0.54 oz (7.8 g)
Backlit Panel Mount : 0.96 oz (13.6 g);
WIRING CONNECTIONS
The electrical connections are made via
terminal pins located on the back of the
unit. The terminal pins are on 0.100"
center lines and can be mated with the
RLC Model HWK7 cable assembly or
many standard 0.100" center line
connectors. When wiring the unit, refer to
Figure 3 to identify the wire position with
the proper function.
There are certain considerations that
should be observed when running the
signal wires. A length of wire can act like
an antenna, and the closer it is to a source
Backlit PCB Mount : 0.75oz (10.4 g)
of electrical noise, the more it becomes
susceptible to that noise.
FIGURE 3
Remove burrs and clean
INSTALLATION
The MDMV meters are available in either a panel mount or printed circuit
board mount design. The panel mount units are provided with a mounting clip
to securely hold the unit in the panel cutout.
Panel mount installation:
1. Cut panel opening to
specified dimensions. EXISTING PANEL THICKNESS
.031" to .125"
(.79 to 3.18)
panel opening.
These are a few rules that should be followed when running these wires.
1. Never run signal wires in the same conduit or raceway with A.C. power lines,
conductors feeding motors, solenoids, SCR controls, heaters, etc.
2. Signal wires within enclosures should be routed as far away as possible from
contactors, control relays, transformers, and other noisy components.
3. When shielded wire is used, connect the shield to the common of the MDMV
unit, and leave the other end of the shield disconnected and insulated from
machine ground.
4. Connect common of the MDMV to machine ground at one point only.
2. Install MDMV unit through
panel cutout as shown in
Figure 1.
LOCKING
TAB
PIN FUNCTIONS
+5 V -
COMMON -
+5 VDC Positive Supply Terminal.
Negative Supply Terminal.
3. Slide mounting clip over rear
of unit until clip is against
back of panel. The unit has
slots for the locking tabs to
hold it in the panel opening.
Note: Hold the MDMV front
bezel in place when sliding
the mounting clip in to
BEZEL
MOUNTING CLIP
FIGURE 1
COMMON
INPUT LO
INPUT HI
BACK PLANE
BACK PLANE
DP3
-
-
-
-
-
-
Negative Supply Terminal.
Signal Input Low Terminal.
Normally connected to Common.
Signal Input High Terminal.
Back Plane Not Terminal. Any annunciator and/or
decimal point will appear when its terminal is
connected to this terminal.
Back Plane Terminal. Any annunciator and/or decimal
point NOT in use must be connected to this terminal.
Thousandths decimal point position. *
position.
PCB mount installation:
1. Prepare printed circuit board hole pattern to the specifications.
2. Unit should be hand soldered using good soldering techniques and hand
cleaned if necessary.
DP2
DP1
BAT
m
μ
V
A
-
-
-
-
-
-
-
Hundredths decimal point position. *
Tenths decimal point position. *
Low battery annunciator. *
Milli annunciator. *
Micro annunciator. *
Volt annunciator. *
Ampere annunciator. *
MDMV SIGNAL INPUT
The MDMV signal input range is from 0 to ±199.9 mVDC with automatic
zero adjustment. Signal inputs are not floating. The calibration does not require
adjustment, since the unit has been calibrated at the factory.
If the input signal exceeds 200 mV, the module will go into an overrange
condition. The unit will display a minus sign when the input high terminal is
negative with respect to the input low terminal.
BLOCK DIAGRAM
+5V
BACKPLANE
* Note: All annunciators must be tied to either BACK PLANE or BACKPLANE
HANDLING PRECAUTIONS: This assembly contains electronic circuits
that are damaged by static electricity. Before handling the assembly,
discharge stray static electricity on your body by touching an earth ground
point. It is also important to handle the unit by the bezel assembly only.
Additionally, if it is necessary to handle a circuit board, be certain that hands
are free from dirt, oil, etc., to avoid circuit contamination that may lead to
malfunction.
BACKPLANE
INHI
INLO
1M Ω
PROCESS
CIRCUITRY
+5V
BATTERY
A
V
m
μ
DP1
DP2
COMMON
DP3
COMMON
FIGURE 2
Note: Incorrect supply polarity may permanently damage the unit.
2
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