Specifications
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Name Model Measuring method  | 
Speedmeter/Counter [Switchable]
SPD-4801 PeriomaticTMB method Cycle calculation method  | 
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| Input | Number of input points Input frequency Input resolution Input Signal Input method  | 
1 point 0.0006Hz to 1.0MHz Approx. 10.4ns (96MHz) 5V logic, zero cross, NPN open collector, 12V logic, input customized signal Single-phase signal  | 
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| [*] General-purpose input option  | 
Input Level and Sensitivity | 5V logic Zero-cross NPN open collector 12V logic Customized input  | 
Trigger level 2.5V 0V 2.5V 6V 0-9.0V in 10mV units  | 
Hysteresis ±0.4V ±0.03V ±0.4V ±0.4V Small:±0.03V, Medium : 0.4V, Large: ±1.3V, trigger level 4.7V or lower/ ±2.6V, trigger level 4.7V or higher  | 
| Input pulse Input resistance Input withstand voltage  | 
[Small] [Medium] 0.2 μs or more   [Large] 0.3 μs or more, for both H and L levels 5V logic, zero cross, NPN open collector, and Input customized signal (trigger level 4.7V or lower): 10kΩ 12V logic, input customized signal (trigger level 4.71V or higher): 5kΩ ±30V *Inputs and outputs are not insulated for the general-purpose input option.  | 
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| [D] Line driver input option  | 
Input signal Input withstand voltage Recommended line driver Termination resistance  | 
Line driver signal ±25V (differential voltage) Equivalent to AM26LS31 300Ω (standard specification) *Input and output are isolated for the line driver input option.  | 
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| [W] 2-Phase(A/B) input option  | 
Input Level and Sensitivity | 5V logic Zero-cross NPN open collector 12V logic Customized input  | 
Trigger level 2.5V 0V 2.5V 6V 0 / 2.5 / 6V  | 
Hysteresis ±0.4V ±0.03V ±0.4V ±0.4V Small:±0.03V, Medium : 0.4V  | 
| Input pulse Input resistance Input withstand voltage  | 
[Small] [Medium] 0.2 μs or more, for both H and L levels 10kΩ ±30V  | 
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| Input low-pass filter Trigger edge Input withstand voltage Input connector Sensor Power supply output[Option]  | 
Select from OFF, 500Hz, 5kHz, 120kHz, or 800kHz Fall ±30V Terminal block 7.62mm pitch M3 free terminal screw [H] DC +12V±5% 60mA max / [L] DC +5V±5% 150mA max  | 
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| Calculation | Measurement mode Calculation rate Frequency divider ratio Output moving average Dynamic PredictiveTM Control input [Setting contents] [Operation Method] [Data communication] Low cut function  | 
Velocity meter/Frequency meter/Period meter (seconds only) /Counter Set the reference pulse number, reference change, and speed unit time with respect to the input frequency. 1 to 60000 1 to 99 8 levels (including continuous and stop prediction) None or 1 point (depending on model), [D2] Option to add 2 points. Set a function for each control input (CTL) and control from outside Functions: hold (current/max./min. value, max. fluctuation range), zero/span shift (Count), stop Count (stop, start) Control input ON logic (normally open, normally closed) can be set ON when control input (CTL*) pin (ON logic) is shorted (open) to GND; setting is reflected when open (shorted). Command control is possible via communication (USB, CAN, RS-485) Commands set via communication cannot be released by terminal input. Reset execution is always required. Low cut function Stop judgment at a speed lower than the set value  | 
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| Display | Display Color Indicator (Numerical Display) Decimal point position  | 
[Standard] SPD-4801 Red LED / [Option] SPD-4801-G Green LED 6-digit, 7-segment LED Character height 14.2mm / Display range:-199999 to 999999 Polarity indication: Reverse rotation -Lighted / Over indication: OL / Zero indication: Leading zero suppress Semi-fixed Decimal point position is set in program mode. [0] ******, [1] *****.* to [4] **.**** 0.3 sec (settable from 0.1 to 9.9 sec) 5ppm ± 1 digit – IND Pulse Input Indicator [Single-phase pulse] Flashes at falling edge of pulse High-speed pulse lights up continuously [UP/DOWN signal] Flashes at falling edge of UP/DOWN signal. Flashing at falling edge of UP/DOWN signal [Phase A/B signal] Flashes at the rise/fall edges of phase A and B. Continuous lighting with high-speed pulses – HI: HIGH comparator output ON – LO: LOW comparator output ON  | 
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| USB communication  | 
Communication specification Communication function Output update time  | 
USB2.0 (Serial port communication by USB virtual COM 230.4kbps) Writing/reading of set values/continuous output of measured values 1 to 9999.9ms, settable in 0.1ms increments (No output when output update time is set to 1 to 9)  | 
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| General Information  | 
Operating temp./humidity Power supply voltage Power consumption  | 
-10°C to +50°C / 35 to 85%RH (non-condensing) SPD-4801-AF: AC100-240V (Maximum rated AC85-264V) 50/60Hz SPD-4801-DF: 12-30V DC with reverse connection protection 3W or less Power Supply/Other Input/Output Power supply/other input/output: 500V DC between each terminal for 1 minute Approx. 340g  | 
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| CAN Option | Communication specifications Communication function Setting item Output update time  | 
CAN2.0B 10 k / 20 k / 50 k / 100 k / 250 k / 500 k / 1M bps, [Format] INTEL/MOTOROLA, [Frame] 11bit/29bit Writing/reading of set values/continuous output of measured values CAN transmit ID, CAN receive ID 1 to 9999.9 ms (settable in 0.1 ms increments) (When output update time is set to 1 to 9, instantaneous values are output every 1 ms.)  | 
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| RS-485 communication option  | 
Number of connected units Communication format Communication method Communication standard Communication speed Data format Communication code Communication function  | 
32 units (max.) 2-wire multi-drop serial communication Asynchronous RS-485 9,600 /19,200 /38,400bps Set in program mode Start bit: 1 bit / Stop bit: 1 bit / Data length: 8 bits / Parity bit: None ASCII Writing/reading set values/measurement value output (response to request command) Modbus RTU support is available upon request.  | 
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| Analog output option  | 
Output signals D/A conversion method Output resolution Load resistance Output accuracy Temperature fluctuation Output scaling Output update time Input/output delay time  | 
[E1] 0 to 10 V, [E5] 0 to 5 V, [R1] ±10 V, [R5] ±5 V, [I1] 4 to 20 mA    [Select a model] DAC conversion method 16bit (50,000 or more) [Voltage output] 4.7kΩ or more / [Current output] 300Ω or less [Voltage output] ±0.1% of FS @ 23°C / [Current output] ±0.1% of FS @ 23°C ±200ppm/℃ or less Arbitrary scaling is possible by full scale and zero scale settings 0.1 to 9999.9ms settable in 0.1ms increments Output update time + analog rise time 150 μs max.  | 
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| Alarm [Comparator] output option  | 
Setting method Number of outputs Output form Output load voltage Update time  | 
Set in program mode 2 points (or 1 point) Depends on model selection conditions. 1 point for line driver input and analog output with comparator output specification. Isolated non-contact output (photo-MOS relay) No polarity. When comparator operating condition is ON, resistance between COMP and COM 50 Ω or less for C2 option (2 comparator) / 100 Ω or less for C1 option ( 1 comparator) Peak AC/DC280V 100mA (resistive load) / ON resistance 50Ω or less Comparison is made with polarity (0 is greater than minus) [Over] ON when set value or more / [Under] ON when set value or less Depends on analog output update time setting. Response time 1ms (max)  | 
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