H7EC-NFV Omron, H7EC-NFV Datasheet - Page 25

• 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

Input Connections
Input Connection Contact Input
When the H7EC-NP is used, relay chattering may be counted. Use
the H7EC-NLP, one of the low-speed input models.
Operation
■ Operating Modes
H7EC Total Counter
Incrementing Operation
(Up)
Counting display values
Relay
Count input
Reset
Or
Reset input
H7E@-N@P
(Full-scale
−1)
Count/Timer input
Full-scale
Or
Relay
H7ET Time Counter
Incrementing Operation
(Up)
Solid State Input
Use a transistor for input that satisfies the following conditions:
Use a diode (D) having a forward voltage as small as possible (0.1 V
max. at I
TTL or C-MOS IC Input
Open-collector Transistor Input
TTL or C-MOS IC
Timer display values
Collector breakdown voltage ≥ 50 V
Leakage current < 1 µA
Reset input
Internal clock
timer value
F
Timer input
of 20 µA).
Reset
H7E@-N@P
Reset input
Count/Timer input
H7E@-N@P
Count/Timer input
(Full-scale
−0.1
Full-scale
H7E@-N@P
TTL or C-MOS IC
25