CUB4I020 Red Lion Controls, CUB4I020 Datasheet - Page 3

• Manufacturer Part Number: CUB4I020
• Description: DC Current Meter W/Red Backlighting
• Manufacturer: Red Lion Controls
• Type: Ammeterr

Specifications of CUB4I020

• Accuracy: ±0.1% (199.9 µA to 19.99 mA)
• Application: Used in Industrial Environments
• Bezel: NEMA 4X⁄IP65 Sealed Front Panel
• Brand/series: CUB
• Connection Type: Screw-Clamp
• Current, Rating: ±199.9 mAdc (Max.)
• Cut Out, Panel: 2.68×1.3 "
• Digit Height: 0.6
• Dimensions: 2.95"L×2.11"W×1.54"H
• Display Digit Height: 0.6 "
• Display Type: LCD
• Function: Ammeter
• Humidity: 85% (Max.) @ 60 °C (Non-Condensing)
• Indicator Type: 3-1⁄2 Digit
• Material, Casing: Plastic
• Measuring Range: ±199.9 μADC to ±199.9 mADC
• Meter Type: DC Current
• Number Of Digits: 3-1/2
• Primary Type: Electronic
• Range, Measurement: ±199.9 μADC to ±199.9 mADC
• Special Features: programmable
• Standards: cULus Recognized
• Temperature, Operating: 0 to 60 °C
• Voltage, Supply: 9 to 28 VDC
• Panel Cutout: 2.68" × 1.30"
• Lead Free Status / Rohs Status: RoHS Compliant part

EMC Installation Guidelines
ElectroMagnetic Interference (EMI), proper installation and wiring methods
must be followed to ensure compatibility in each application. The type of
electrical noise, source or coupling method into the unit may be different for
various installations. Cable length, routing and shield termination are very
important and can mean the difference between a successful or a troublesome
installation. Listed below are some EMC guidelines for successful installation
in an industrial environment.
1. The unit should be mounted in a metal enclosure, which is properly
2. Use shielded (screened) cables for all Signal and Control inputs. The shield
3. Never run Signal or Control cables in the same conduit or raceway with AC
4. Signal or Control cables within an enclosure should be routed as far away as
5. In extremely high EMI environments, the use of external EMI suppression
The following EMI suppression devices (or equivalent) are recommended:
6. Long cable runs are more susceptible to EMI pickup than short cable runs.
WIRING CONNECTIONS
the back of the unit. When wiring the unit, use the label to identify the wire
position with the proper function. All conductors should meet voltage and
current ratings for each terminal. Also cabling should conform to appropriate
standards of good installation, local codes and regulations. It is recommended
that power supplied to the unit be protected by a fuse or circuit breaker. Strip
the wire, leaving approximately ¼" bare wire exposed (stranded wires should
be tinned with solder). Insert the wire into the screw-clamp terminal and tighten
the screw until the wire is clamped tightly. Each terminal can accept up to two
#14 AWG wires.
DECIMAL POINT SELECTION
1000ths. The decimal point position is DIP switch selectable for one of three
locations. If all the DIP switches are set to the “OFF” position, then NO
decimal point will appear in the display. The DIP switches are located at the rear
of the unit.
Although this unit is designed with a high degree of immunity to
connected to protective earth.
(screen) pigtail connection should be made as short as possible. The
connection point for the shield depends somewhat upon the application.
Listed below are the recommended methods of connecting the shield, in
order of their effectiveness.
a. Connect the shield only at the panel where the unit is mounted to earth
b. Connect the shield to earth ground at both ends of the cable, usually when
c. Connect the shield to common of the unit and leave the other end of the
power lines, conductors feeding motors, solenoids, SCR controls, and
heaters, etc. The cables should be run in metal conduit that is properly
grounded. This is especially useful in applications where cable runs are long
and portable two-way radios are used in close proximity or if the installation
is near a commercial radio transmitter.
possible from contactors, control relays, transformers, and other noisy
components.
devices, such as ferrite suppression cores, is effective. Install them on Signal
and Control cables as close to the unit as possible. Loop the cable through the
core several times or use multiple cores on each cable for additional protection.
Install line filters on the power input cable to the unit to suppress power line
interference. Install them near the power entry point of the enclosure.
Ferrite Suppression Cores for signal and control cables:
Line Filters for input power cables:
Note: Reference manufacturer’s instructions when installing a line filter.
Therefore, keep cable runs as short as possible.
The electrical connections are made via screw-clamp terminals located on
The CUB4 Volt and Current Meters can be set-up to read in 10ths, 100ths, or
ground (protective earth).
the noise source frequency is above 1 MHz.
shield unconnected and insulated from earth ground.
Fair-Rite # 0443167251 (RLC #FCOR0000)
TDK # ZCAT3035-1330A
Steward #28B2029-0A0
Schaffner # FN610-1/07 (RLC #LFIL0000)
Schaffner # FN670-1.8/07
Corcom #1VR3
3
CUB4V SIGNAL INPUT
for the desired input voltage. The unit will indicate the direct readout for the
range selected.
Note: Only one Voltage Range switch (S1-S4) should be selected (ON).
when it is necessary to scale the display to indicate other engineering units.
The Scale switch should be left in the “OFF” position when the application
requires direct voltage readout on the display.
adjusted unless the unit is being re-calibrated with an accurate voltage source.
at the same screw terminal marked COMM. The power supply common,
and the signal common must be at the same voltage potential. The voltmeter
cannot measure a voltage with a reference that is different than the power
supply common.
The voltage range is selected by setting one of the DIP switches S1 to S4
The SCALE DIP switch (S5) and the Scaling Potentiometer are used
The Calibration Potentiometer has been set at the factory and should not be
The power supply common and signal common are connected internally
Caution: The Maximum Voltage for each switch position must not
Caution: 9 to 28 VDC power circuit is not isolated from the
be exceeded or the unit may be damaged (See Specifications).
signal circuit.