H7EC-NFV Omron, H7EC-NFV Datasheet - Page 32

• Manufacturer Part Number: H7EC-NFV
• Description: COUNT TOTALIZER 7-SEG LCD 20HZ
• Manufacturer: Omron
• Series: H7ECr

Specifications of H7EC-NFV

• Count Rate: 20Hz
• Number Of Digits/alpha: 8
• Input Type: Voltage
• Voltage - Supply: None Required (Battery Included)
• Display Type: LCD Non-Backlit
• No. Of Digits / Alpha: 8
• Digit Height: 8.6mm
• Operating Temperature Range: -10°C To +55°C
• Svhc: No SVHC (15-Dec-2010)
• Count Speed Max: 20Hz
• External Depth: 48.5mm
• External Length / Height: 24mm
• External Width: 48mm
• Display Scan Rate Max: 20Hz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: H7ECNFV; H7ECNFVQ

Inputs
Do not route the wiring of the count, timer, or reset inputs in the vicin-
ity of, or in parallel to the wiring of high-voltage or inductive load cir-
cuits (such as motors and relays). Also, keep the wiring as short as
possible.
Be careful not to apply voltages exceeding the following values to the
count, timer, or reset terminals, otherwise the internal circuit may be
damaged.
No-voltage input: 3 VDC
General Information
Finish soldering under the conditions below.
Solder the terminals within 5 seconds, at a solder iron tip tempera-
ture of 250°C ± 10°C when using lead solder, and within 3 seconds,
at a solder iron tip temperature of 350°C ± 10°C when using lead-
free solder.
Since the Counter is not flux-tight, do not use flux when soldering.
Avoid automatic and dip soldering. Manually solder the Counter onto
a PC board, and avoid cleaning as much as possible.
When mounting the Counter on a PC board with components which
consume higher current than the H7E@-N@P, observe the following
precautions.
1. Minimize the wiring (less than 50 mm) from the H7E@-N@P to the
2. Avoid placing the H7E@-N@P power, timer, counter, or reset input
power supply section.
circuit in parallel with circuits that consume large currents, partic-
ularly on the positive side.
H7E@-N@P
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
In the interest of product improvement, specifications are subject to change without notice.
When using the Counter in an environment where the Counter is
subject to frequent occurrences of vibration or shock, or when
mounting the Counter facing downwards or sideways, it is suggested
that the Counter be directly soldered to a PCB instead of using sock-
ets.
To Conform to EN/IEC Standards
Input terminals have no insulation from power supply terminals. The
power supply terminals must be supplied from a SELV source in
accordance with IEC61010-1 Annex H. SELV (separated extra-low
voltage) source is a power supply having double or reinforced insula-
tion between the primary and the secondary circuit and having out-
put voltage of 30 V rms max. and 42.4 V peak max. or 60 VDC max.
Cleaning
To prevent damage, the exterior of the Counter must not be exposed
to organic solvents (3.g. paint thinner or benzine), strong alkalis, or
strong acids.
Others
• No user-serviceable parts.
• Return to OMRON for all repairs.
PC Board (Bad Example)
Power supply
Placed far away from
the power supply.
Wired in parallel
with large-
current-carrying
components.
Large-current-
consuming
components
H7E@-N@P
Bypass
capacitor
PC Board (Good Example)
Power supply
H7E@-N@P
Large-current-
consuming
components
H7E@-N@P
Bypass
capacitor
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