H7EC-N Omron, H7EC-N Datasheet - Page 11

• Manufacturer Part Number: H7EC-N
• Description: TOTALISER, 7DIGIT
• Manufacturer: Omron

Specifications of H7EC-N

• 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: 1kHz
• 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

J INPUT AND POWER SUPPLY
Do not apply voltage on the Counter if the Counter is a model
that operates with no-voltage input, to avoid damaging the
internal circuit of the Counter.
Do not connect any single input signal in parallel to Counter
models operating with no-voltage input and those operating with
voltage input, otherwise the Counters may malfunction.
When connecting a sensor to the Counter that operates with
no-voltage input, make sure that the sensor has open collector
output.
The operation of the Counter may be affected if the line voltage
of the power supply exceeds 500 pF (about 10 m, with parallel
wires of 2 x 2 mm). Keep all wires as short as possible. When
using shielded wire, stray capacitance may occur.
When connecting an open collector input from a transistor to the
Counter that operates with no-voltage input, make sure that the
leakage current of the transistor is 5 µA maximum.
When connecting count input from an SSR to the Counter that
operates with AC/DC voltage input, use OMRON’s G3TA-IA or
G3TA-ID SSR. Otherwise, make sure that the leakage current of
the SSR is 0.1 mA maximum or connect a bleeder resistor in
parallel to the input circuit of the Counter.
J BACKLIGHT POWER SUPPLY
To reduce variation in the brightness of the backlight when using
more than one H7E with a backlight, use the same power supply
for all the backlights.
When connecting the DC power supply for the backlights, be
sure to connect the polarities correctly.
H7EC
Sensor
or
or
*Bleeder resistor
The voltage between terminals 1 and 2 must be
1.5 V maximum when the SSR is OFF.
Leakage current:
0.1 mA max.
or
11
J BATTERY REPLACEMENT
Remove the wiring when replacing the Battery. Do not come in
contact with any item to which high voltage is being applied.
Doing so may result in electric shock.
Before changing the Battery, be sure that you are not carrying
any static electric charge.
Procedure for replacing the Battery (refer to the diagrams below):
When the internal Battery nears expiration, the display may
flicker.
J EN/IEC STANDARDS
The counter input, reset input, and backlight power supply
terminals of the no-voltage input or PNP/NPN universal DC
voltage input models (H7Ej-N,-N1, H7Ej-NV(-H),-NV1(-H)) are
not isolated.
A SELV power supply conforming to Appendix H of IEC61010-1
should be used for the counter input, reset input and backlight
power supply terminals. A SELV power supply is a power supply
for which the input and output have double or reinforced
insulation, and for which the output voltage is 30 Vrems with 42.4
V peak or 60 VDC max. (Only the H7Ej-NVj-H has a
backlight.)
The terminals for counter input and reset input for AC/DC
multi-voltage input models have basic insulation.
Connect the reset input terminals to a device that does not have
exposed current-carrying parts and has basic insulation for
240 VAC.
1. Using the tool, pry open the lift-tab on the case. (1)
2. Pull the body out of its outer case. (2)
3. Lift the Battery up by the edge and remove it. (3)
4. Wipe the back of the new Battery before inserting it.
5. Ensure that the + and -- terminals are correctly oriented.
6. After replacing the Battery, re-insert the body into its case. (4)
7. Press the Reset Key before use (not necessary for
(5)
When removing the Battery, do not come in contact with the
display area or any internal parts.
Check that the case is securely held in by the lift-tab.
H7ER-N,-NV,-NV1). (5)
(1)
(1)
(4)
Tool
(3)
(2)
H7EC