Preset Counter/Timer H8GN
Preset Counter/Timer
H8GN
World’s Smallest Compact Preset
Counter/Timer
1/32-mm DIN with Communications
Only 48 x 24 x 83 mm (W x H x D)
Switch between 4-digit preset counter and 4-digit
timer operation.
While using the preset counter, it is possible to
switch the display to monitor the totalizing count
value (8 digits).
Built-in prescaling for counter operation.
RC
ON/OFF-duty adjustable flicker mode that can be
used to perform cyclic control is available for timer
operation.
Four preset values that can be changed by the front
panel key (SV-bank).
Finger protection
VDE0106/P100.
terminal
block
to
meet
Panel surface compatible with NEMA4X/IP66.
Conforms to UL, CSA, and IEC safety standards as
well as CE Marking.
Six-language instruction manual provided.
Ordering Information
Supply
Supp
y voltage
o age
Communications
Output
Ou
pu
No communications
24 VDC
Contact output (SPDT)
H8GN-AD
RS-485
H8GN-AD-FLK
Model Number Legend:
H8GN-AD-j
1
1.
4
2
Supply Voltage
D: 24 VDC
2.
Communications Output Type
None: Communications not supported
FLK: RS-485
H8GN
H8GN
Specifications
Ratings
Rated supply voltage
24 VDC
Operating voltage range
85% to 110% of rated supply voltage
Power consumption
1.5 W max. (for max. DC load) (Inrush current: 15 A max.)
Mounting method
Flush mounting
External connections
Screw terminals (M3 screws)
Terminal screw tightening torque
0.5 N⋅m max.
Attachment
Waterproof packing, flush mounting bracket
Display
7-segment, negative transmissive LCD; time display (h, min, s); CMW, OUT, RST, TOTAL
Present value (red, 7-mm-high characters); Set value (green, 3.4-mm-high characters)
Digits
PV: 4 digits
SV: 4 digits
When total count value is displayed: 8 digits
(Zeros suppressed)
Memory backup
EEPROM (non-volatile memory) (number of writes: 100,000 times)
Counter
Maximum counting
speed
30 Hz or 5 kHz (See note.)
Counting range
–999 to 9,999
Input modes
Increment, decrement, individual, quadrature inputs
Output modes
N, F, C, or K
Time ranges
0.000 to 9.999 s, 0.00 to 99.99 s, 0.0 to 999.9 s, 0 to 9999 s, 0 min 00 s to 99 min 59 s, 0.0 to
999.9 min, 0 h 00 min to 99 h 59 min, 0.0 h to 999.9 h, 0 h to 9999 h
Timer modes
Elapsed time (Up), remaining time (Down)
Output modes
A, B, D, E, F, or Z
Timer
Inputs
Input signals
For Counter: CP1, CP2, and reset
For Timer:
Start, gate, and reset
Input method
No-voltage input (contact short-circuit and open input)
Short-circuit (ON) impedance:
1 KΩ max. (Approx. 2 mA runoff current at 0 Ω)
Short-circuit (ON) residual voltage: 2 VDC max.
Open (OFF) impedance:
100 kΩ min.
Applied voltage:
30 VDC max.
Start, reset, gate
Minimum input signal width: 1 or 20 ms (selectable)
Power reset
Minimum power-opening time: 0.5 s
Control output
SPDT contact output: 3 A at 250 VAC/30 VDC, resistive load (cos φ = 1)
Minimum applied load
10 mA at 5 VDC (failure level: P, reference value)
Reset system
External, manual, and power supply resets (for timer in A, B, D, E, or Z modes)
Sensor waiting time
260 ms max. (Inputs cannot be received during sensor wait time if control outputs are turned
OFF.)
Note:
The figures given for maximum counting speed are for incrementing or decrementing operation with a prescale value of ×1. If prescaling is used and 5 kHz is set, the maximum counting speed will be reduced to about half. The maximum counting speed will also be
reduced to about half when the up/down mode is selected.
5
H8GN
H8GN
Characteristics
Timer function
Accuracy of
operating time and
setting error
(including
temperature and
voltage effects)
Signal start: ± 0.03% ± 30 ms max.
Power-ON start: ± 0.03% ± 50 ms max.
Insulation resistance
100 MΩ min. (at 500 VDC)
Dielectric strength
1,500 VAC, 50/60 Hz for 1 min between output terminals and non-current-carrying
metal parts
510 VAC, 50/60 Hz for 1 min between current-carrying terminals (except output
terminals) and non-current-carrying metal parts
1,500 VAC, 50/60 Hz for 1 min between output terminals and current-carrying
terminals (except output terminals)
500 VAC, 50/60 Hz for 1 min between communications terminals and current-carrying
terminals (except output terminals)
1,000 VAC, 50/60 Hz for 1 min between contacts not located next to each other
Noise immunity
Square-wave noise by noise simulator;
±480 V (between power terminals), ± 600 V (between input terminals)
± 8 kV (malfunction), ± 15 kV (destruction)
Static immunity
Vibration
b a o resistance
es s a ce
Shock
S
oc resistance
es s a ce
Life
e expectancy
e pec a cy
Ambient
be
t
temperature
t
Malfunction
10 to 55 Hz with 0.35-mm single amplitude each in three directions for 10 min
Destruction
10 to 55 Hz with 0.75-mm single amplitude each in three directions for 2 h
Malfunction
100 m/s2, 3 times each in six directions
Destruction
300 m/s2, 3 times each in six directions
Mechanical
10 million operations
Electrical
100,000 operations min. (3 A at 250 VAC, resistive load)
Operating
–10°C to 55°C (with no icing or condensation)
Storage
–25°C to 65°C (with no icing or condensation)
Ambient humidity
25% to 85%
EMC
(EMI):
Emission Enclosure:
(EMS):
Immunity ESD:
Immunity RF-interference:
EN61326 Class A
EN61326
EN61000-4-2:
4 kV contact discharge (level 2)
8 kV air discharge (level 3)
EN61000-4-3:
10 V/m (Amplitude-modulated,
80 MHz to 1 GHz) (level 3);
10 V/m (Pulse-modulated,
900 MHz ± 5 MHz) (level 3)
Immunity Conducted
Disturbance:
Immunity Burst:
EN61000-4-6:
EN61000-4-4:
Immunity Surge:
EN61000-4-5:
3 V (0.15 to 80 MHz) (level 2)
2 kV power-line (level 3);
1 kV I/O signal-line (level 4);
1 kV communications-line (level 3)
1 kV between lines
(power and output lines) (level 3);
2 kV between grounds
(power and output lines) (level 3)
Approved standards
UL508, CSA C22.2 No.14
Conforms to EN61010-1/IEC61010-1 (Pollution degree 2/overvoltage category II)
Conforms to VDE0106/P 100 (Finger Protection)
Case color
Rear section: Gray smoke; Front section: N1.5 (black)
Enclosure ratings
Panel surface:
Rear case:
Terminal block:
Weight
Approx. 80 g
6
IP66 and NEMA Type 4X (indoors)
IP20
IP20
H8GN
H8GN
Communications Specifications
Transmission path connections
Multidrop
Communications method
RS-485 (two-wire, half duplex)
Synchronization method
Start-stop synchronization
Baud rate (See note.)
1,200/2,400/4,800/9,600 bit/s
Transmission code
ASCII
Data bit length (See note.)
7 or 8 bits
Stop bit length (See note.)
1 or 2 bits
Error detection (See note.)
Vertical parity (none, even, or odd) (See note.)
Block check character (BCC)
Flow control
Not supported.
Interface
RS-485
Retry function
Not supported.
Communications buffer
40 bytes
Reading and writing from H8GN
Reading present value and totalizing count value; reading/writing preset and set values;
switching between SV-banks; switching between communications
write-enabled/write-prohibited; reading/writing other initial and advanced function setting
parameters
Note:
The baud rate, data bit length, stop bit length, and vertical parity can be individually set using the communications setting level.
7
H8GN
H8GN
Nomenclature
No. 1 Display
Displays the present value or parameter type.
When totalizing count is displayed, the
leftmost 4 digits of the 8-digit totalizing count
will be displayed. (Zeros suppressed)
Operation display 2
Indicator
Meaning
CMW
Lit when communications writing is enabled.
RST
Lit during reset using reset input or Reset Key.
OUT
Lit when control output is ON.
TOTAL
Lit when totalizing count value is displayed.
Operation display 1
Displays the time unit when the
timer function has been selected.
Example
No. 2 Display
Displays set value or
set value of the
parameter.
Displays the
rightmost 4 digits of
the count value (8
digits) when the
H8GN is used as a
totalizing counter.
(Zeros suppressed)
5 h 30 min
123.4 s
Flashes while timer is on 0.0 min,
0 h 00 min, 0.0 h, or 0 h.
Level Key
Press this key to select the setup
level. The setup level is selected in
order “operation level” ←→
“adjustment level”, “initial setting
level” ←→ “communications setting
level”.
Mode Key
Press this key to select
parameters within each
level.
Down Key
Each press of this key decreases
values displayed on the No. 2
display. Hold down this key
continuously to decrease values
quickly. Also returns setting
items.
Up/Reset Key
Each press of this key
increases values
displayed on the No. 2
display. Hold down this
key continuously to
increase values quickly.
Also advances setting
items.
Reset Function
To reset the present
value, press this key
while the present value
is displayed.
If this key is pressed
while the totalizing
count value is
displayed, the totalizing
count value and the
present value will be
reset.
8
H8GN
H8GN
Operation
Block Diagram
Communications
circuit
(Basic
insulation)
Output circuit
(Functional
insulation)
(Basic
insulation)
Display circuit
Input circuit
Internal
control circuit
Key switch
circuit
Power supply
circuit
I/O Functions
Inputs
Counter inputs
CP1/CP2
Reset
Timer inputs
Start
Reset
Gate
Outputs
OUT
•
•
•
•
•
•
•
•
•
•
•
•
Receive count signals.
Receive increment, decrement, individual, and quadrature inputs.
In increment mode and decrement mode, CP1 is used for the count input and CP2
is used for count prohibit input.
Resets the present value. (Totalizing count value is not reset.)
(In increment mode or increment/decrement mode, the present value returns to 0;
in Decrement Mode the present value returns to the set value.)
The count input is not received during resetting.
The RST indicator is lit during resetting.
Starts timing.
Resets the timer. (In elapsed time mode the time returns to 0; in remaining time
mode, the time returns to the set value.)
During resetting, timing stops and the control output turns OFF.
The RST indicator is lit during resetting.
Prohibits timing operation.
Output made according to the output mode setting when the set value is reached.
9
H8GN
H8GN
Initial Setup
The
and
Keys are used to switch between setup menus, and the amount of time that you hold the keys down for determines which
setup menu you move to. This section describes two typical examples.
Note:
In the following sections, “PV” is used to indicate a present value and “SV” to indicate a set value.
1. Using the H8GN as a Counter
Typical Application Examples
1. Changing Set Values
• Setup Procedure
Power ON
Power ON
Operation Level
Set value and selections in each
display can be changed by pressing
the
and
Keys.
Present value (PV)/
set value (SV)
2. Displays
Press the Level Key for at
least 3 s. Operation stops.
No. 1 display
No. 2 display
Initial Setting Level
Typical Application
Input mode
Individual input
Output mode
F (overcount)
Counting speed
30 Hz
Input signal width
20 ms
Decimal point
None
Prescale
None
Check Counter/
Timer selection
Check Counter/Timer
selection
Function:
Set input mode
Use the
and
Keys to set the input mode
to individual mode.
Input mode:
Set output mode
Use the
and
Keys to set the output mode
to F.
Check counting
speed
Check the counting speed.
Check input
signal width
Check the input signal width.
Output mode:
Counting speed:
Input signal width:
Press the Level Key for at
least 1 s.
Operation starts.
Operation Level
Set SV
Reset PV
Press the
and
Keys to change the set
value to 100.
PV/SV:
Press the
PV:
Start operation
Key.
Operate
• Confirming Set Values
Set values are effective two seconds after key operation is stopped or when the
or
Key is pressed.
10
H8GN
H8GN
2. Using the H8GN as a Timer
Typical Application Examples
1. Changing Set Values
• Setup Procedure
Power ON
Power ON
Operation Level
Set value and selections in each
display can be changed by pressing
the
and
Keys.
Present value (PV)/
set value (SV)
2. Display
Press the Level Key for at
least 3 s. Operation stops.
No. 1 Display
No. 2 Display
Typical Application Examples
Time range
0.0 to 999.9 s
Timer mode
DOWN (remaining time)
Output mode
A mode
Output time
Hold
Input signal width
20 ms
Initial Setting Level
Set Counter/Timer
selection
Use the
and
Keys to select the timer
function.
Set time range
Use the
and
Keys to set the time range to
999.9 s
Check timer mode
Use the
and
Keys to set the timer mode to
remaining time.
Timer mode:
Check output mode
Check the output mode.
Output mode:
Check output time
Check the output time.
Output time:
Check input signal
width
Check the input signal width.
Input signal width:
Function:
Time range:
Press the Level Key for at
least 1 s. Operation starts.
Operation Level
Set SV
Use the
and
Keys to set the SV to 10.0.
PV/SV:
Reset PV
Press the
PV:
Start operation
Key.
Operate
• Confirming Set Values
Set values are effective two seconds after key operation is stopped or when the
or
Key is pressed.
11
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