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Preset Counter/Timer (48 × 24)


A DIN 48 × 24 Preset Counter. Compact, Yet Equipped with Communication.


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
0.5 Nm 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 *
Counting range -999 to 9,999
Input modes Increment, decrement, individual, quadrature inputs
Output modes N, F, C, or K
Timer 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
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 (cosφ = 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.)

* 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.


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)
Static immunity ± 8 kV (malfunction), ± 15 kV (destruction)
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) *1
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): EN61326-1 *2
Emission Enclosure: EN55011 Group 1 Class A
(EMS): EN61326-1 *2
Immunity ESD: EN61000-4-2: 4 kV contact discharge (level 2); 8 kV air
discharge (level 3)
Immunity RF-interference: 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: EN61000-4-6: 3 V (0.15 to 80 MHz) (level 2)
Immunity Burst: EN61000-4-4: 2 kV power-line (level 3); 1 kV I/O signal-line
(level 4); 1 kV communications-line (level 3)
Immunity Surge: EN61000-4-5: 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)
Degree of protection Panel surface: IP66 and NEMA Type 4X (indoors)
Rear case: IP20
Terminal block: IP20
Weight Approx. 80 g

*1. Refer to the Life-test Curve.
*2. Industrial electromagnetic environment (EN/IEC 61326-1 Table 2)

Communications Specifications

Transmission path connections Multidrop
Communications method RS-485 (two-wire, half duplex)
Synchronization method Start-stop synchronization
Baud rate * 1,200/2,400/4,800/9,600 bit/s
Transmission code ASCII
Data bit length * 7 or 8 bits
Stop bit length * 1 or 2 bits
Error detection Vertical parity (none, even, or odd) *
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

* The baud rate, data bit length, stop bit length, and vertical parity can be individually set using the communications
  setting level.