19
Self-powered Tachometer New H7ER
Revolutions displayed up to five digits.
Dual revolution display according to encoder
resolution
used; 1000 s
–1
/1000 min
–1
or 1000.0 s
–1
/1000.0 min–1
Switchable dual revolution display type available
(-NV1 models); extended up to 10000 min–1
Ordering Information
Tachometers
Count
input
Display
Max. revolutions displayed (applicable encoder resolution)
Cou pu
sp ay
1000 s
–1
(1 pulse/rev
.),
1000 min
–1
(60 pulse/rev
.)
1000.0 s
–1
(10 pulse/rev
.),
1000.0 min
–1
(600 pulse/rev.)
←→
10000 min
–1
(60 pulse/rev
.) (switchable)
Light-gray body
Black body
Light-gray body
Black body
PNP/NPN
universal DC
lt i t
7-segment LCD
with backlight
H7ER-NV-H H7ER-NV-BH H7ER-NV1-H H7ER-NV1-BH
voltage input
7-segment LCD
H7ER-NV H7ER-NV-B H7ER-NV1 H7ER-NV1-B
No-voltage input
7-segment LCD
H7ER-N H7ER-N-B --- ---
Model Number Legend
H7ER - N -
12
1. Count Input
None:
No-voltage input
V:
PNP/NPN universal DC voltage input
2. Number of Digits
None:
4 digits
1:
5 digits
3. Case Color
None:
Light gray
B: Black
4. Display
None:
7-segment LCD without backlight
H:
7-segment LCD with backlight
3 4
Accessories (Order Separately)
Lithium
Battery
Y92S-36
Wire-wrap T
erminal (Set of two T
erminals) Y92S-37
Flush Mounting Adapter
26 mm
45 mm
Y92F-75
us ou g dap e
24.8 mm
48.8 mm
Y92F-77B
New H7ER New H7ER
20
Specifications
General
Item H7ER-NV-j
H7ER-NV-jHH7ER-N-jH7ER-NV1-j
H7ER-NV1-jH
Operating
mode
Up type
Mounting method
Flush mounting
External connections
Screw terminals, Wire-wrap T
erminals (see note 3)
Display
7-segment LCD with or without backlight (character height: 8.6 mm) (see note 4)
Number of digits
4 5
Count input PNP/NPN universal
DC voltage input
No-voltage input
PNP/NPN universal DC voltage input
Max. counting speed
1 kHz 10 Hz
Max. revolutions displayed
(see note 5) 1,000 s
–1
(When encoder resolution of
1 pulse/rev is used.)
1,000 min
–1
(When encoder resolution of
60 pulse/rev is used.)
1,000.0 s
–1
(When encoder resolution of
10 pulse/rev is used.)
1,000.0 min
–1
(When encoder resolution of
600 pulse/rev is used.)
←→
10,000 min
–1
(When encoder resolution of
60 pulse/rev is used.)
(Switchable with switch)
Attachment W
aterproof packing, flush mounting bracket, revolution unit labels (see note 5)
Approved standard
UL508, CSA C22.2 No.14, Lloyds
Conforms to EN61010-1/IEC61010-1 (Pollution degree2/overvoltage category
III)
Conforms to VDE0106/P100
Note: 1.
Reset is not available.
2.
When there is no input, the display will be 0.0 or 0.
3.
Separately ordered Wire-wrap T
erminals (Y92S-37) are required.
4.
Only PNP/NPN Universal DC voltage input models have a backlight.
5. “rpm”, “rps”, “s–1
” and “min
–1
” labels are included.
Ratings
Item H7ER-NVj-j
H7ER-NVj-jHH7ER-N-j
Supply
voltage
Backlight model: 24 VDC (0.3 W max.) (for
backlight lit)
No-backlight model: Not required (powered by
built-in battery)
Not required (powered by built-in battery)
Count input
High (logic) level: 4.5 to 30 VDC
Low (logic) level: 0 to 2 VDC
No voltage input
Maximum short-circuit impedance: 10 k
Ω
max.
Reset input
Low
(logic)
level:
0
to
2
VDC
(Input impedance: Approx. 4.7 k
Ω)
Maximum
short circuit
im edance:
10
k
Ω
max
.
Short-circuit residual voltage: 0.5 V max.
Minimum open impedance: 750 k
Ω
min.
Max. counting speed
4-digit models: 1 kHz
5-digit models: 10 kHz
1 kHz
Minimum signal width
10 Hz: 0.05 ms
1 kHz: 0.5 ms
T
erminal screw tightening
torque
0.98 N
S
m max.
Ambient temperature
Operating: –10°
C to 55
°
C (with no condensation or icing)
Storage: –25°
C to 65
°
C (with no condensation or icing)
Ambient humidity
Operating: 25% to 85%
New H7ER New H7ER
21
Characteristics
Item H7ER-NVj-j
H7ER-NVj-jHH7ER-N-j
Insulation
resistance
100 M
Ω
min. (at 500 VDC) between
current-carrying metal parts and exposed
non-current-carrying metal parts, and between
the backlight power supply and count input
terminals/reset terminals for backlight models
100 M
Ω
min. (at 500 VDC) between
current-carrying metal parts and exposed
non-current-carrying metal parts
Dielectric strength
1,000 V
AC, 50/60 Hz for 1 min between
current-carrying metal parts and exposed
non-current-carrying metal parts and between
the backlight power supply and count input
terminals/reset terminals for backlight models
1,000 V
AC, 50/60 Hz for 1 min between
current-carrying metal parts and exposed
non-current-carrying metal parts
Impulse withstand voltage
4.5 kV between current-carrying terminal and exposed non-current-carrying metal parts
Noise immunity
Square-wave noise generated by noise simulator (pulse width: 100 ns/1
µs, 1-ns rise)
ose u y
±
600 V (Between count input terminals)
±
480 V (Between the backlight power supply
terminals for backlight models)
±
500 V (Between count input terminals)
Static immunity
±
8 kV (malfunction)
V
ibration resistance
Malfunction: 0.15-mm single amplitude at 10 to 55 Hz for 10 min each in 3 directions
Destruction: 0.375-mm single amplitude at 10 to 55 Hz for 2 hrs each in 3 directions
Shock resistance
Malfunction: 200 m/s
2
3 times each in 6 directions
Destruction: 300 m/s
2 3
times each in 6 directions
EMC (EMI) EN50081-1
Emission Enclosure: EN55022 class B
(EMS) EN50082-2
Immunity ESD:
EN61000-4-2:
4-kV contact discharge (level 2)
8-kV air discharge (level 3)
Immunity RF-interference from AM Radio W
aves:
ENV50140:
10 V/m (80 MHz to 1 GHz) (level 3)
Immunity RF-interference from Pulse-modulated Radio W
aves:
ENV50204:
10 V/m (900 MHz
±
5 MHz) (level 3)
Immunity Conducted Disturbance:
ENV50141:
10 V (0.15 to 80 MHz ) (level 3)
Immunity Burst:
EN61000-4-4:
2-kV power line (level 3)
2-kV I/O signal line (level 4)
Enclosure rating
Front panel:
IP66, NEMA4 with waterproof packing
T
erminal block:
IP20
W
eight (see note)
No-backlight model: Approx. 60 g
Backlight model: Approx. 65 g
Note: W
eight includes waterproof packing and flush mounting bracket.
Reference Value
Item Value Note
Battery
life
7 years min. with continuous input at
25°
C (lithium battery)
The battery life is calculated according to the conditions in the left column
and therefore is not a guaranteed value. Use these value as reference for
maintenance or replacement.
New H7ER New H7ER
22
Nomenclature
Front view
Bottom view
Counting speed switch
For H7ER-NV1-jj
Counting
speed
switch setting
(see note)
Front panel
10000
min
–1
(default setting)
1000.0 min
–1
Terminal block
H7ER-NV1-jj
Max.
revolutions
displayed
60 pulse/rev
.
Applicable encoder
resolution
1000.0 s
–1
Applicable unit
label
“min–1
” or “rpm”
“min–1
” or “rpm”
600 pulse/rev
.
10 pulse/rev
.“s–1
” or “rps”
1000 s
–1
H7ER-N-j
H7ER-NV-jj
60 pulse/rev
.“min–1
” or “rpm”
1 pulse/rev
.
No setting is
required
1000 min
–1
“s–1
” or “rps”
Counting Speed Switch Settings and Unit Label Application
Model
Not
used
H7ER
Note:
Perform switch setting before mounting to a control panel.
Operation
Operating Modes
Count period
(1 s)
Count period
(1 s)
0.25 s
Internal gate
Display refreshed
Internal count value
Counter reset Refresh
Number display Previous
count
value display
Display refreshed
every 1.25 s Display refreshed
every 1.25 s
H7ER
T
achometer
Incrementing Operation
Within Unit T
ime (Up)
New H7ER New H7ER
23
Dimensions
Note: All
units are in millimeters unless otherwise indicated.
H7ER-N
Dimensions with Flush Mounting Bracket
•When
mounting, insert the Counter
into
the cutout, insert the adapter from the
back and push in the Counter while
making
the
gap between the front panel
and the cutout panel as small as
possible. Use screws to secure the
Counter. If waterproofing is desired,
insert
the waterproof packing.
•When several Counters are installed,
ensure that the ambient temperature
will
not exceed specifications.
•The
appropriate thickness of the panel
is
1 to 5 mm.
Panel Cutout
Separate mounting
Joint mounting
W
aterproofing is not possible
for joint mounting
60 min.
22.2+0.5
0
45+0.5
0
22.2+0.5
0
(48
Units - 2.5)
+1.0
0
New H7ER New H7ER
24
Installation
Terminal Arrangement
Bottom view: V
iew of the T
achometer rotated horizontally 180
°
Backlight Model
No-backlight Model
Backlight
24 VDC
Pulse
input
Pulse
input
Connections
H7ER Tachometer
Note: Select
input transistors according to the following:
Dielectric strength of the collector
y
50 V
Leakage current < 100
µ
A (1
µ
A for no-voltage input model)
No-voltage Input Model
T
ransistor Input (Open Collector of an NPN T
ransistor)
PNP/NPN Universal DC V
oltage Input Models W
ithout Backlight
T
ransistor Input
Open collector of
an NPN transistor Input
Open collector of
an NPN transistor Open collector of
an PNP transistor
Input
or
Open collector of
an NPN transistor Open collector of
an PNP transistor
Input
or
PNP/NPN
Universal DC V
oltage Input Models W
ith Backlight
T
ransistor Input
Backlight
24 VDC
New H7E New H7E
30
Accessories (Order Separately)
New H7E (Except for PCB-mounting Counter)
The
New H7E models are supplied with a mounting bracket and nut. Additionally
, the Flush Mounting Adapters shown here allow the New H7E
models
to be fitted to existing panel cutouts.
Y92F-77B Flush Mounting Adapter
for 24.8 48.8 Rectangular Cutout
Use
mounting bracket supplied with the Counter
Panel cutout
Y92F-75 Flush Mounting Adapter
for 26 45.3 Rectangular Cutout
Use
mounting bracket supplied with the Counter
Panel Cutout
28.8 24.2 22.2
45.2
48.2
53.8
4
24.8
48.8
Y92S-37 Wire-wrap Terminal (Set of Two Terminals) 44.8
24
48 2548.5 17.1
22
Wire-wrap terminal
(1
×
1 mm)
When using the Wire-wrap Terminal, be sure to use the correct
wires
and peripheral devices. (The correct wires, bits and sleeves
are shown in the table on the right.)
Wire Bit Sleeve W
rapped state
AWG22 2-A 2-B Normal
AWG24 1-A 1-B Normal
AWG26 3-A 1-B Normal
Y92S-36 Lithium Battery (3 V) 24.5 dia.
7.7
PCB-mounting Counters
XR2A-2801-N 28-pin Socket Note: When using the Socket, use the PCB processing dimen-
sions
previously provided.
New H7E New H7E
31
Precautions
New H7E (Except for PCB-mounting Counter)
WARNING
This
product has a built-in lithium battery
. Do not short-circuit
the
+ and – terminals, charge, disassemble, deform, or expose
the
battery to fire. The battery may explode
(break), catch fire,
or
cause liquid leakage.
Caution
Do
not use any battery other than the specified one (Y92S-36).
Using
another battery may cause liquid leakage or breakage,
resulting
in malfunction or injury
.
Caution
If a voltage other than the rated one is applied, internal ele-
ments
may be damaged.
Do not use the Counter in the following places:
•
Locations subject to direct sunlight.
•Locations subject to corrosive gases.
•
Locations subject to dust.
Before Use
•An
insulation sheet has been inserted to maintain the quality of
the
T
otalizer in the event of a long period without use. Be sure to
remove
this sheet before attempting to use the product.
Remove the insulation sheet and press the Reset Key on the
front
panel of the Counter
. (With the H7ER-N,-NV(-H),-NV1(-H),
models,
“0” or “0.0” will be displayed after 1 s.)
Reset Key
Insulation Sheet
•Switch settings on the Counter must be performed before
mounting
it to a control panel.
•
Do not use the Counter in the following locations:
S
Locations subject to severe changes in temperature.
SLocations
subject to condensation as
the result of high humid
-
ity.
Mounting Precautions for Flush Mounting
Although
the operating section is watertight (conforming to NEMA4,
IP66), rubber packing is provided to avoid water leakage through
the
gap between the
Counter and panel cutout. Unless this rubber
packing is tightly squeezed on, water may permeate inside the
panel.
Therefore, be sure to tighten the screws for fixing the Flush
Mounting
Bracket. (Excessive tightening
may also deform the rub
-
ber
packing.)
Screw for the Flush Mounting Bracket
The wider side must
face the panel. Adapter
Panel
Reset Input and Count/Timer Input
•The H7E operates using its built-in Battery. If the H7E is
connected to a device that has +V and OUT terminals that are
connected with a diode as shown in the circuit diagram, the
circuit indicated by the arrow 1 or 2 will be formed when the
device
is turned OFF
. As a result, the H7E
may be reset or count
by
one. It is recommended that such devices not be connected to
the
H7E.
Count/Timer
input
or reset
input
circuit
Internal
H7Ej-N
Devices
•If
an excessive voltage is applied to the count/timer input or reset
input
terminals, the internal elements may be damaged.
Ensure that the following voltages are not exceeded:
S
PNP/NPN universal voltage input model: 30 VDC
S
AC/DC voltage input model:
At count/timer input: 240 V
AC (peak voltage: 338V)
240 VDC
At reset input:
3 VDC (no-voltage input)
S
No-voltage input model: 3 VDC
SA
void wiring close to high-tension or large-current lines.
•
Do not remove the outer
case when voltage is being applied to
the power supply terminals or the input terminals.
•The
input for the H7E
j-NFV-j
is a high-impedance circuit and
so
influence from an induced voltage may result in malfunction.
Therefore,
when the input signal wiring is longer than 10 m (line
capacitance of 120 pF/m, at room temperature), it is
recommended
that a CR filter or a bleeder resistor is connected.
!
!
!
New H7E New H7E
32
Count/Timer Input or Reset Input to More than
One H7E Counter at a Time
•PNP/NPN Universal DC V
oltage Input
or
or
Note:
H (Reset ON) level must be 4.5 V minimum.
H =
4.7 (k
Ω)/N + V
4.7 (k
Ω)/N + R
•
No-voltage Input
or
Note: 1. The
leakage current of the transistor used for input must
be
less than 1
µA.
2. The
forward voltage
of the diode must be as low as pos
-
sible
(i.e., 0.1 V maximum with an I
F
of 20
µ
A) so that the
voltage
between terminals 3 and 4 will be 0.5
V when the
reset
input is ON.
Input and Power Supply
No-voltage
Input Models
•Do
not
impose voltage on the Counter if the Counter is a model
that
operates with no-voltage input, otherwise
the internal circuit
of
the Counter may be damaged.
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. Sensor
•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 1
µ
A maximum.
No-voltage Input and PNP/NPN Universal DC V
oltage Input
Models
•The
operation of the Counter may be af
fected 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,
line capacitance may occur
.
AC/DC Multi-voltage Input Models
•When
connecting count/timer input from an SSR to the Counter
that operates with AC/DC voltage input, use OMRON’s
G3TA-IA/ID
SSR
(for DC) whose leakage current is 0.1 mA max.
or
connect
a bleeder resistor in parallel to the input circuit of the
Counter.
Leakage
current:
0.1 mA max.
or
or
or
*Bleeder resistor
The voltage between terminals 1 and 2 must be
1.5 V maximum when the SSR is OFF.
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
.
Input
V
erification with the H7ET Time Counter
(When
the time range is not set to 0s to 999h59m59s )
The decimal point of the LCD blinks every other second while an
input
signal is being applied. If the decimal point is not blinking, the
input signal is not being received correctly. Check the input signal
connections.
Unit Label for Time Counter and Tachometer
A
unit label has been
packed with the Counter
. Use in accordance
with
the application.
Battery Replacement
Remove
the wiring when replacing the Battery
. Do not come in con
-
tact
with any item to which high voltage is being applied. Doing so
may result in electric shock.
Before
changing the Battery
, the person should ensure that they are
not carrying any static electric charge.
Procedure for replacing the Battery (refer to the diagrams below):
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)
When
removing the Battery
, do not
come in contact with the
display
area or any internal parts.
New H7E New H7E
33
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)
Check
that the case is securely held in by the lift-tab.
7. Press the Reset Key before use (not necessary for
H7ER-N,-NV,-NV1).
(5)
Tool (2)
(1)
(1)
(3)
(4)
(5)
Battery
EN/IEC Standards
The
count or timer input, reset input, and backlight power supply ter
-
minals of the no-voltage input or PNP/NPN universal DC voltage
input
models (H7E
j
-N,-N1, H7E
j-NV(-H),-NV1(-H))
are not isola
-
ted.
A SELV power supply conforming to Appendix H of IEC61010-1
should
be used for the count or timer input, reset input and backlight
power
supply terminals. A SEL
V 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 V
rms with 42.4
V peak or 60 VDC
max.
(Only the H7E
j-NVj
-H has a backlight.)
The
terminals for count or timer input and reset input for AC/DC mul
-
ti-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 V
AC.
Others
If
the indicator keeps flickering or is OFF
, the internal battery may be
close to the end of its service life. In such
a
case, it is suggested that
the
battery be replaced.
Precautions
PCB-mounting Counter
Power Supply
•Use the power supply within the applicable range indicated by
the
following waveform, while considering the ripple and
voltage
fluctuations
of the circuit power source.
3.6 V
2.6 V
Voltage
•The
H7E
j-Nj
P changes its mode as shown below depending
on
the applied supply voltage.
LCD Internal circuit
operation
Beyond
supply voltage
Looks darker
Looks normal
Looks lighter
No display
No operation
Normal operation Battery
life
guideline
Applicable
range
(V)
Normal operation
3.6
3
0
Approx. 2.6
Approx. 2.2
Battery Replacement
To
prevent unwanted reset when replacing the battery
, connect the
new
battery before disconnecting the old one. Otherwise, the
volt
-
age
supplied to the
counter circuit drops, causing the present count
value
to reset.
When
designing the
circuit board, providing two extra terminals for
battery
connection will make the switch must simpler
. See the sche
-
matic
diagram below:
H7Ej-NjP
Wiring
polarity must be carefully observed, in order to prevent
per
-
manent damage to the Counters. Exercise
caution when inserting
the Counter in the socket, to prevent reversed polarity
.
New H7E New H7E
34
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.
H7Ej-NjP
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
The
terminals are solder-plated. Finish soldering the terminals with
-
in
5 seconds, at a solder iron tip temperature of 250
°C
±
10
°.
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
j-NjP
, observe the
follow
-
ing precautions.
1. Minimize
the wiring
(less than 50 mm) from the H7E
j-NjP
to
the power supply section.
2. Avoid
placing
the H7E
j-Nj
P power
, timer
, counter
, or reset
input circuit in parallel with circuits that consume large
currents,
particularly on the positive side.
Power supply Power supply
H7Ej-NjP
Placed far away from
the power supply.
Large-current-
consuming
components
Bypass
capacitor
H7Ej-NjP
Large-current-
consuming
components
PC Board (Bad Example) PC Board (Good Example)
Wired in parallel
with large-current-
carrying compo-
nents.
Bypass
capacitor
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 sug-
gested
that the Counter be directly soldered to
a PCB instead of us
-
ing sockets.
To Conform to EN/IEC Standards
Input
terminals have no insulation from power supply terminals. The
power
supply terminals must be supplied from a SEL
V
source in ac
-
cordance with IEC61010-1 Annex H. SELV (separated extra-low
voltage) source is a power supply having double or reinforced in-
sulation
between the
primary and the secondary circuit and having
output
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.
OMRON Corporation
Industrial
Automation Company
Measuring and Supervisory Controls Division
28th Fl., Crystal T
ower Bldg.,
1-2-27, Shiromi, Chuo-ku,
Osaka 540-6028 Japan
Phone: (81)6-6949-6035 Fax: (81)6-6949-6069
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To
convert millimeters into inches, multiply by 0.03937. T
o convert grams into ounces, multiply by 0.03527.
Cat. No. M064-E1-2 In the interest of product improvement, specifications are subject to change without notice.
Printed
in Japan
0799-2M
a
