Omron H8BM Series User manual

1
Multi-maintenance Counter H8BM
Nine Built-in Counters/Timers to
Measure Equipment Utilization
Up to nine Counters can be used as counters or
accumulative timers.
Can be used as a multi-stage preset counter.
Individual outputs to indicate maintenance timing.
Pre-forecast/Forecast and machine stoppage
output provided.
IP54F enclosure rating for resistance to oil and
water.
Compact, short-body: 72 x 72 x 79 mm (DIN).
Directly connectable to 2-wire DC sensors. RC
Ordering Information
Number of stages Output Model
3-stage setting
NPN H8BM-B
3 s age se g
PNP H8BM-BP
1-stage setting
NPN H8BM-BD
s age se g
PNP H8BD-BDP
Accessories (Order Separately)
Replacement Parts
Name Model
Hard Protective Cover Y92A-72C
Rubber Packing Y92S-25
A Hard Protective Cover and Rubber Packing are supplied with the
Counter.
Short Bar
Short Bar Y92S-26
When the Counter is used as a multi-stage preset counter, wiring
will be facilitated if Counter inputs 1 through 9 are short-circuited
with
the following Short Bar .
5-pole
4-pole
Both the 5-pole and 4-pole Short Bars are used to short-circuit the 9
Counter inputs.

H8BM H8BM
2
Specifications
Item H8BM-B, H8BM-BP H8BM-BD, H8BM-BDP
Classification 3-stage setting 1-stage setting
Mounting method Flush mounting
External connections Screw terminals
Enclosure ratings IP54F (panel surface)
Display mode Up display
Output mode F mode
Reset system External, manual resets
T iming function Yes
Input signal method V oltage inputs: High and low signal voltages (count, reset, re-monitor , counter select, I/O inhibit)
Control output No-contact outputs: NPN outputs (RUN, forecast,
machine stoppage) (PNP outputs for -BP)
No-contact outputs: NPN outputs (RUN, forecast)
(PNP outputs for -BDP)
Display Count, preset value, counter number , and error codes displayed on 7-segment LCD Power-ON, mode,
reset, I/O inhibit, and re-monitor modes displayed on LCD characters
Output indication on LCD characters and LEDs
LCD with backlight Yes
Built-in counter number 9 (counters 1 to 9) (see Note 1)
Number of stages 3 stages (see Note 2) 1 stage (see Note 5)
Digits Forecast value: 6 digits (999999)
Pre-forecast value: –5 digits (see Note 3)
Machine stoppage: +5 digits (see Note 4)
6 digits (999999)
Max. time settings Forecast value: 99999.9 hr (0.1 hr or more)
Pre-forecast value: –9999.9 hr (see Note 3)
Machine stoppage: +9999.9 hr (see Note 4)
99999.9 hr (0.1 hr or more)
Memory backup Backup time for power interruption: Approx. 10 years at 25 °C
Approved standards UL508, CSA C22.2 No.14
Note: 1. Each channel operates on an separate I/O.
2. Pre-forecast: Displayed only on LCD (No external output is provided.)
Forecast: Displayed on LCD and LED and output (Output for each Counter)
Machine stoppage: Displayed on LCD and LED and output
(Output when the count value of one or more of Counters 1 to 9 has reached its machine stoppage value.)
3. The pre-forecast value is set as a negative offset in respect to the forecast value.
4. The machine stoppage value is set as a positive of fset in respect to the forecast value.
5. This model operates on the forecast value only .
Ratings
Rated voltage 24 VDC
Operating voltage range 85% to 1 10% of rated voltage (see Note 1)
Power consumption Approx. 1.8 W (at 24 VDC) (see Note 2)
Max. counting speed 30 cps (ON:OFF = 1:1)
Min. input signal width Counter No. selection input: 16.7 ms max.
Reset input: 100 ms max.
Re-monitor input: 30 ms max.
Output number request input: 30 ms max.
I/O inhibit input: 16.7 ms max.
One-shot output time 20 ms (see Note 3)
Count, reset, re-monitor ,
output number request, and
I/O inhibit input
V oltage input (see Note 4) (input resistance: approx. 2.2 k Ω)
High level: 16 to 30 VDC
Low level: 0 to 3 VDC
Control output Open-collector output: 100 mA max. at 30 VDC max.
Case color Light gray (Munsell 5Y3/1)
Note: 1. Ripple content: 20% max.
2. On power application, an inrush current of approx. 1.2 A flows into the Counter .
3.
This signal is output as a carry signal when the Counter is used as a totalizing counter .
4.
This signal can also be used as a no-voltage input signal depending on the wiring (refer to Input Connections).

H8BM H8BM
3
Characteristics
Insulation resistance 100 M Ω min. (at 250 VDC) (between current-carrying terminals and exposed non-current-carrying
metal parts)
Dielectric strength 1,000 V AC, 50/60 Hz for 1 min (between current-carrying terminals and exposed non-current-carrying
metal parts)
Impulse withstand voltage 1 kV (between power terminals)
1.5 kV (between current-carrying terminals and exposed non-current-carrying metal parts)
Noise immunity ± 1 kV (between power terminals) and ± 600 V (between input terminals), square-wave noise via noise
simulator (pulse width: 100 ns/1 µs, 1-ns rise)
Static immunity Malfunction: 8 kV ; destruction: 15 kV
V ibration resistance Destruction: 10 to 55 Hz with 0.75 mm single amplitude in three directions
Malfunction: 10 to 55 Hz with 0.5 mm single amplitude in three directions
Shock resistance Destruction: 294 m/s
2
Malfunction: 196 m/s
2
Ambient temperature Operating: –10° C to 55 ° C (with no icing)
Storage: –25° C to 65 ° C (with no icing)
Ambient humidity Operating: 35% to 85%
Weight Approx. 290 g
Block Diagram
Counter clock
generator
Function
setting circuit ROM RAM LCD driver
Count
circuits
System clock
generator LCD reference voltage generator
Key switch
circuits
Input circuits
(count 1 to 9,
reset, re-monitor,
output number
request, I/O inhibit)
Count
circuits One-chip microcomputer
LCD
Output circuits
(Output 1 to 9,
RUN, machine
stoppage)
LED
Battery Power failure
detector
Power circuits*
(DC) input
Although the input terminals are electrically insulated from the internal circuit, do not conduct an insulation resistance test on these terminals.
I/O Functions
Inputs
Count (1 to 9) Input count values.
Used as time count input signals when Counter is used as timer .
Maximum counting speed: 30 Hz (minimum signal width: 16.7 ms)
Reset Resets displayed count (timing) value of a specified Counter .
Counter under reset does not operate ad its output is turned OFF .
Reset signal input during re-monitor input restores reset count (timing) value of the specified Counter .
While reset signal is ON, RST indicator lights.
Re-monitor Reset count (timing) value of specified Counter can be re-monitored, and restored by reset input.
While re-monitor signal is ON, RCV indicator lights.
Counter No. select Specifies Counter whose count (timing) value is to be displayed.
I/O inhibit Inhibits count inputs of all Counters.
T urns OFF all forecast outputs, RUN outputs, and machine stoppage outputs.
While I/O inhibit signal is ON, INHB indicator lights.

H8BM H8BM
4
Outputs
Forecast (1 to 9) Each of these outputs turns ON when its forecast value has been reached.
When Counter is used as totalizing counter , output one-shot signals as carry signals.
Retain outputs until count values are reset.
RUN T urns ON when Counter is operating normally .
Machine stoppage T urns ON when count value of one Counter has reached set machine set machine stoppage value.
Retains output until count value is reset.
Note: The input and output signals are enabled when power is applied to the Counter . During a power failure, the input signals are disabled,
and the output signals are turned OFF .
Nomenclature
I/O Inhibit Indicator
Indicates that the input/output
inhibit input signal is ON.
Re-monitor Input Indicator
Indicates that the re-monitor
input signal is ON.
Reset Input Indicator
Indicates that the reset input
signal is ON.
Counter No. Indicator
Indicates the number of the
Counter whose data (count
value, preset value, etc.) is
currently displayed.
RESET Key
Resets the count value
and output signals.
COUNTER No. Key
Selects the Counter in
sequence each time this
Selector is pressed: (Any
Counter whose forecast value
is set to 0 is skipped in the
RUN mode.)
The following indicators light to show that the count value has reached
the preset value and that the output has turned OFF.
Control Output Indicator (Red LED):
Pre-forecast value: LCD lights
Forecast value: RED LED lights
Control Output Indicator (LCD):
Machine stoppage value: Indicator flashes between red and green
and LCD output indicator flashes.
Count Value
Indicates the current count (current time in
timer mode)
Set Mode Indication : RUN mode
Preset Value
Always indicates the forecast value during
the RUN operation. Indicates the set
value in each setting mode.
Up Keys 1 to 6
Each of these keys increments the preset
value of the corresponding digit, each
time it is pressed.
MODE Key
Selects the mode in sequence each time
this key is pressed: SET Key
Inputs the set or changed data.
RUN Forecast
value Pre-forecast
value Machine
stoppage
value
: Forecast value
: Pre-forecast value
: Machine stoppage value
CNT
No. MODE
Note: Models with only 1-stage setting (H8BM-jDj) are not provided with pre-forecast and machine stoppage output function; only the
forecast output function is provided.

H8BM H8BM
5
Operation
Operation
1. Selecting Counter/Timer Operation
Whether each Counter operates as a counter or a timer can be spe -
cified on a DIP switch provided on the side panel of the Counter.
Open
the lid of the switch compartment on the side of the Counter .
Set
each DIP switch pin as necessary by referring to the following
figure:
Timer
Counter
The setting of the DIP switch is read on power application.
Note: The setting of the DIP switch that is used to select the
counter
or timer operation of each Counter is read on power
application. Setting change of this DIP switch while the
Counter
is operating will be ignored. Power must be turned
off then back on again after changing settings.
DIP switch compartment
2. Changing Mode
Each time the MODE Key is pressed, the mode changes as follows:
RUN mode
Mode
Key
Forecast value mode
Mode
Key
Pre-forecast value mode*
Mode
Key
Mode
Key
Machine stoppage mode*
Flashing
RUN Mode Indication
Forecast Value Setting
Mode Indication
Pre-forecast V alue
Setting Mode Indication
Flashing
Machine Stoppage V alue
Setting Mode Indication
Flashing
Note: 1. The modes marked * are not provided on the 1-stage
type
Counter .
2. I/O operations are always performed regardless of the
mode.
3. If
no key is pressed for 1 minute in each mode, the RUN
mode is automatically restored.
3. Setting/Changing Data (3-stage Type)
Setting/Changing Forecast V alue
1. Press the MODE Key to enter the forecast value setting
mode. The same Counter number as in the RUN mode is
displayed.
2. Press the COUNTER No. Key to select the Counter whose
data is to be set or changed. The Counters are selected in
sequence each time the COUNTER No. Key is pressed. A
Counter can also be selected by inputting the Counter No.
selection.
Flashing
3. Use the Up Keys (1 to 6) to change the values of the digits.
When an Up Key is pressed, the corresponding digit starts
flashing.
The preset value is zero-suppressed. Each time the
Up Key is pressed, the specified value increment as:
Flashing
In the following example, the forecast value of Counter 2 is set
to 35000.
Flashing

H8BM H8BM
6
4. Press the SET Key to determine the set value. If o Key is
pressed within 5 seconds after the SET Key has been
pressed,
the RUN mode is automatically restored. Key inputs
made during the 5 seconds are valid.
After the set forecast value has flashed, the display is
changed
automatically as below .
RUN Mode Indication
4. Resetting Count Value
Resetting V alue for Each Counter
1. Select the Counter whose count value is to be reset by either
pressing the COUNTER No Key or inputting the Counter No.
select. The count value can be reset in any mode.
2. Either press the RESET Key or input the reset signal. The
count
value of the selected Counter will be reset to 0.
5. Re-monitoring Count Value
A count value that has been reset by mistake can e recovered. (ex.
Recover previously reset count value “23456” of Counter No. 3)
1. Turn ON the re-monitor input. The count value which was
reset will be displayed. At this time, the count value is only
displayed and not recovered internally. The Counter whose
count
value is displayed remains in the RUN mode.
2. Press the COUNTER No. Key (or apply the Counter No.
select
input) to access the Counter whose count value is to be
recovered. If the count value does not need to be recovered,
the following operations are not necessary .
3. Press the RESET Key (or apply the reset input). The
recovered value will flash 3 times, and the count value that
was
reset will be recovered for the designated Counter only .
While
the recovery input is ON, the recovered count value will
remain displayed. However, the internal mechanism of the
Counter will continue operating from the count value before
resetting.
4. Turn OFF the re-monitor input to restore normal operation.
6. Checking Count Values (RUN Mode)
Select the Counter whose count value is to be checked by pressing
the COUNTER No. Key in the RUN mode, or by inputting the
Counter No. select. The Counter number changes in sequence
each time the COUNTER No. Key is pressed. However, any
Counter
not used (whose forecast value is set to 0) will be skipped.

H8BM H8BM
7
7. Count Value Display
While the count input is ON, the period on the count value display
flashes.
The timer operation measures time by totaling the ON time
of the count input.
8. Output Indicator
The status of the pre-forecast, forecast, and machine stoppage out -
puts
is displayed as follows:
1. Pre-forecast: The number of the Counter whose count value
has reached the pre-forecast value is displayed on the LCD.
The pre-forecast is only displayed on LCD as a message and
no actual output is issued.
2. Forecast Output: A red indicator lights above the number of
the Counter whose count value is displayed on the LCD.
3. Machine Stoppage Output: The background alternately
lights
in red and green, and the number of the Counter whose
machine stoppage output is issued is flashed on the LCD.
Flashing
Note: When any of the pre-forecast, forecast, and machine stop -
page outputs of a Counter has turned ON, the Counter
number of that Counter is automatically displayed. When
an
attempt to reset the count value is made at this time, the
count value of only the Counter whose count value is cur -
rently displayed is reset (in RUN mode only).
9. Clearing Settings
•The count values of all the Counters can be cleared by
simultaneously holding down the RESET Key and COUNTER
No. Key for 3 seconds.
The
same function is ef fected if the Counter number select input
and reset input are simultaneously applied for 3 seconds.
•The count value, pre-forecast value, forecast value, and
machine stoppage value of all the Counters can be cleared by
simultaneously holding down the RESET and SET Keys for 3
seconds.
10. When Used as Totalizing Counter/Timer
Counter
By setting the forecast value of a Counter to 999999 (99999.9 hr),
the Counter can be used as a totalizing counter/timer . The machine
stoppage output of this Counter is not issued. When used as a total -
izing
counter , the forecast output of this Counter issues a one-shot
output for 20 ms as a carry signal when the count value changes
from
999999 to 0.
11. Self-diagnostic Function
The following displays will appear if an error occurs.
Display Meaning Output
status Recov- ery
Setting after
recovery
E1 CPU
Error OFF Press
RESET
Key
Normal counter
operation is
recovered using
count and set
values from
before the error .
E2 Memory
Error
Factory setting

H8BM H8BM
8
Timing Charts
Machine stoppage value
Counter (3-stage Preset Operation)
Reset input
Count input
999999
Forecast value
Pre-forecast value
0
Count value
Pre-forecast indicator
Forecast output
and indicator
Machine stoppage
output and indicator
Timer (3-stage Preset Operation)
Reset input
Count input
99999.9 hr
Machine stoppage value
Forecast value
Pre-forecast value
0.0 hr
Time value
Pre-forecast indicator
Forecast output
and indicator
Machine stoppage
output and indicator
Totalizing Counter Operation
Reset input
Count input
999999
0
Count value
Forecast output
(indicator)
Totalizing Timer Operation
Reset input
Count input
99999.9 hr
0.0 hr
Time value
Forecast output
(indicator)
One-shot output time: 20 ms One-shot output time: 20 ms
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Hard Protective
Cover (transparent)
Panel Cutouts
Panel cutout is as shown below (according to DIN43700). The
mounting
panel thickness should be 1 to 5 mm.

H8BM H8BM
9
Installation
Mounting
To mount the Counter , attach the two fixtures supplied as accesso -
ries
to the left and right sides of the Counter , and securely tighten the
knurled screws on the brackets. If any other screws are used to at -
tach
the brackets, or if the knurled screws are excessively tightened
with a tool, damage may result.
Mounting bracket
(2 sets)
Hard Protective
Cover (transparent)
Rubber packing Mounting
panel Knurled screw
Provide enough space around the Counter when mounting it to en -
sure
a proper working space.
Other components
Terminal Arrangement
22 23 24 25 26 27 28
Reset input Count No.
selection Count input 1
Count
input 2
Count
input 3
Count
input 4
Count
input 5
15 16 17 18 19 20 21
Re-monitor
input
I/O inhibit
input Count input 6
Count
input 7
Count
input 8
Count
input 9
Input COM
8 9 10 11 12 13 14
RUN
output Machine stoppage
output
Forecast
output 1
Forecast
output 2
Forecast
output 3
Forecast
output 4
Forecast
output 5
1 2 3 4 5 6 7
Power
supply: 0 V
Power
supply:
24 V
Forecast
output 6
Forecast
output 7
Forecast
output 8
Forecast
output 9
Output
COM
22 23 24 25 26 27 28
15 16 17 18 19 20 21
8 9 10 11 12 13 14
12 3 4 5 6 7

H8BM H8BM
10
Connections
NPN Output
Count input 1
Count input 2
Count input 3
Count input 4
Count input 5
Count input 6
Count input 7
Count input 8
Count input 9
Count No.
selection
Reset input
I/O inhibit input
Re-monitor input
INPUT COM
16 to 30 VDC
DISPLAY
Count value
Setting value
Count up
6 digit, 3-stage
preset Counter
x 9
Forecast output 1
Forecast output 2
Forecast output 3
Forecast output 4
Forecast output 5
Forecast output 6
Forecast output 7
Forecast output 8
Forecast output 9
Machine
stoppage output
RUN output
OUTPUT COM
+24 V
0 V
24 VDC +10%
–15%
5 V Power
circuit
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
Note: Short-circuit terminals 1 and 7 when the power source of the Counter is shared.
H8BM-BD/-BDP outputs the forecast and machine stoppage values simultaneously .
RUN, machine stoppage,
forecast outputs 1 to 9
30 VDC
Max.
Load
* Connect a diode to suppress Counter surge when an inductive
load is connected.
Note: When the load is short-circuited, the internal circuits may be
damaged.

H8BM H8BM
11
PNP Output
INPUT COM
Count input 1
Count input 2
Count input 3
Count input 4
Count input 5
Count input 6
Count input 7
Count input 8
Count input 9
Count No.
selection
Reset input
I/O inhibit input
Re-monitor input
16 to 30 VDC
DISPLAY
Count value
Setting value
Count up
6 digit, 3-stage
preset Counter
x 9
Forecast output 1
Forecast output 2
Forecast output 3
Forecast output 4
Forecast output 5
Forecast output 6
Forecast output 7
Forecast output 8
Forecast output 9
Machine
stoppage output
RUN output
+24 V
0 V
24 VDC +10%
–15%
5 V Power
circuit
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
Load
OUTPUT COM
Note: H8BM-BD/-BDP outputs the forecast and machine stoppage values simultaneously .
OUTCOM
30 VDC
Max.
Load
All outputs
* Connect a diode to suppress Counter surge when an inductive
load is connected.
Note: When the load is short-circuited, the internal circuits may be
damaged.
Output RUN,
machine stoppage, forecast 1 to 9
Output method Open collector
Applicable voltage 30 V max.
Rated current 100 mA
Residual voltage 2 V max.
Leakage current 100 µ A max.
I/O Connections
39 V
Input Circuits Output Circuits
5 V
Photocoupler
1.2 kΩ
INCOM
Input 1.2 kΩ
430 Ω
The input terminals are electrically
insulated from the internal circuits.
NPN Type PNP Type
10 Ω
39 V
Output
OUTCOM*
The OUT COM and 0 V terminals
are internally connected.
OUTCOM
Output
10
Ω

H8BM H8BM
12
Example of Input Connections (Solid-state Switches)
Two-wire Sensors
The count input, counter No. select input, reset input, I/O inhibit in -
put, and re-monitor input signals are enabled when voltage is ap-
plied.
Two-wire sensor
IN COM
All inputs
H8BM
24 VDC
Two-wire sensor
All inputs
IN COM
H8BM
24 VDC
Note: Use the following two-wire sensors:
1. High-level; transistor ON
Min. switching capacity: 5 mA max.
Residual voltage: 4 V max.
2. Low-level: transistor OFF
Leakage current: 1.5 mA max.
3. Power voltage range: 20.4 to 30 VDC
Use of the OMRON TL-XD or E2E-XD-N Sensors is recommended.
Three-wire Sensors
NPN Type PNP Type
Main
sensor
circuit
All inputs
COM
H8BM
Main
sensor
circuit
All inputs
COM
H8BM
Main
sensor
circuit
COM
All inputs
H8BM
Main
sensor
circuit
COM
All inputs
H8BM
Contact Switch Connection
COM
All inputs
H8BM
All inputs
COM
H8BM
*H: Contact ON.
*Use contact that can break 13 mA, 30 V

H8BM H8BM
13
Precautions
Power Supply
•The power supply and input circuits are electrically insulated
inside
the Counter .
•When turning the power on and off, input signal reception is
sometimes not possible as shown in the diagram below. The
unstable period will vary with power supply voltage and the load
conditions on external power supplies.
250 ms
ON 24 V
14 V
Impossible
Input signal
reception
Power supply
OFF 0 V 0 to 50 ms
Count
Unstable
12 V
10 ms to 0.9 s
Impossible
Unstable
•Turn on or off the operating power source all at once by using
switch
or relay contact.
Operating Environment
•The front panel of the Counter is dust-proof and oil-proof.
However,
if the Counter is exposed to a large quantity of water or
oil for a long time, the internal components may be af fected.
•When using the Counter in a location where excessive noise is
generated keep the Counter , input devices, and input wiring as
far away as possible from the noise source and power lines. Use
of shielded cable as input signal lines is recommended.
•Organic solvents (such as paint thinner), as well as strong acids
or strong alkalies can damage the housing of the Counter .
Others
•To conduct a dielectric strength test between the electric circuits
and non-current-carrying metal parts with the Counter installed
in the control panel, either disconnect the Counter from the
circuit,
or short-circuit all the terminals of the Counter (this is to
prevent the test voltage from sneaking into the Counter and
prevent
the internal circuitry of the Counter from being damaged
in case the insulation of some device in the control panel
ruptures.
•The terminal screw is M3 x 5. Use the solderless terminal as
shown
in the following illustration.
Caution
This product contains a lithium battery. Lithium batteries ex-
plode
if incinerated. Dispose of the Counter as a non-combus -
tible
item.
!
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. M042-E1-1D
OMRON Corporation
Industrial Automation Company
Measuring and Supervisory Controls Department
Shiokoji Horikawa, Shimogyo-ku,
Kyoto, 600-8530 Japan
Tel: [phone]/Fax: [phone]
In the interest of product improvement, specifications are subject to change without notice.
Printed in Japan
0101-0.5C (0499)