SQY12-04 Dual channel high-precision intelligent speedometerDetailed product description：

I. Overview
SQY12-04 dual channel high-precision intelligent speedometer, which receives two sensing signals from the rotating body, calculates and displays their respective speeds, as well as the speed difference and speed ratio between them. It is a dual channel digital tachometer. For the input signals of each channel, independent coefficients can be used for correction, with arbitrary settings of 0.0001 99999.9 times. Therefore, it varies depending on the measured object and purpose. In addition to rotational speed, it can also be transformed into any physical quantity. For example, it is possible to measure the speed ratio and speed difference of the conveyor line, as well as parameters such as the reduction rate (elongation rate), tension rate, and sliding rate on the production line in pressing and rolling projects such as steel plates, papermaking, and aluminum plates. In addition, each channel is equipped with independent upper and lower limit comparison relay outputs, as well as two analog signal outputs, which can monitor and control the rotating body. According to different purposes and usage environments, our company has various speed sensors and tachometers that are used in conjunction to form the best measurement and control system.

2、 Characteristics
Can calculate and display the speed of two rotating bodies
By using the coefficient correction function, it can be transformed into any physical quantity proportional to the rotational speed.
Built in 3-stage variable comparison value and logic combinable relay output function (additional function SQY12-04-120)
Dual channel operation function, capable of displaying speed difference, speed ratio, compression rate, sliding rate, and change rate
Wide range, from low speed to high speed (input frequency: 0.005 Hz~20 kHz)
RS-232C communication
Two analog signals of 1-5V (additional function SQY12-04-105)
Easy to install, size according to DIN specifications (160 × 80)
Using a 128 × 64LCM display: displaying measured values, speed differences, and speed ratios

3、 SQY12-04 Dual channel High precision Intelligent Speedometer Specification
Supporting sensors: Our company's supporting sensors include magneto electric sensors, photoelectric sensors, and rotary encoders
Input impedance: above 5 k Ω (at 20kHz)
Number of input channels: Dual channel
Input amplification form: AC/DC (switchable)
Measurement method: fixed pulse operation method or timed operation method
Speed direct reading calculation function: coefficient setting range: 0.0001 to 99999.9
Dual channel calculation function: speed difference (B-A), speed ratio ((B/A) x 100%), rate of change ((B-A/A) x 100%)
Monitor: 128 × 64LCM monitor
Display range: 0 to ± 999999 (0.00 to 9999.99%)
Signal input: Input impedance: above 5 k Ω
AC (alternating current) amplifier
Signal waveform: sine wave or rectangular wave
Signal voltage range: sine wave 0.2~+15 V, rectangular wave 0.6~40 Vp-p
Signal frequency range: 1 Hz to 20 kHz

DC (Direct Current) amplifier
Signal waveform: rectangular wave with a pulse width of 10 μ s or more
Signal voltage range: Hi level+4~30 V, Lo level -1~+1 V
Signal frequency range: 0.005 Hz to 20 kHz
Comparator function (additional function)
Number of segments set: 3 segments
Range: 0 to ± 999999
Output project: on/off
Output method: logical combination
Output form: Relay contacts (DC 30 V, 0.1 A)
Analog signal output (additional function)
Conversion method: 12 bit D/A mode
Voltage range: 1-5 V/F.S (F.S is the full range and can be set arbitrarily)
RS-232 communication
Baud rate: 115200 bps
Parameter settings can be made;
It can also be paired with specialized measurement software for continuous dynamic recording and analysis (additional functions)
Sensor power supply
DC 12 V ± 1 V (maximum 100 mA), sum of channels A and B
Power supply
AC 220 V　50 Hz　20 VA
Temperature range for use: 0-40 ℃
Usage humidity range -10~55 ℃
The maximum humidity range is 95% (but condensation is not allowed)
Dimensions 160 (W) × 80 (H) × 130 (D) mm
Weight approximately 1.5 kg

4、 Instructions for Rear Panel Wiring Terminals

Wiring terminal diagram:

one

two

three

four

five

six

seven

eight

nine

ten

eleven

twelve

VOut2+

VOut1+

Normally Open

J3

normally closed

Normally Open

J2

normally closed

Normally Open

J1

normally closed

Analog output

Relay 3

Relay 2

Relay 1

SQY12-04 Dual channel Intelligent Speedometer Factory Serial Number:

RS232 communication

power feed

Communication signal input

DC signal input

220V,AC

-15V

Com

Rxd

Txd

0V

12V

SA1

SA2

SD1

SD2

N

L

thirteen

fourteen

fifteen

sixteen

seventeen

eighteen

nineteen

twenty

twenty-one

twenty-two

twenty-three

twenty-four

Connect to the power supply AC 220V, 50Hz
Communication signal input: SA1, 0V and SA2, 0V
Magnetic electric sensor input
DC signal input: SD1, 0V and SD2, 0V
NPN type open collector output sensor input
Feed 12V, 0V: Provide 12V DC power to NPN type open collector output sensors
RS232 communication: Setting parameters through a computer via a communication interface
Analog output: Linear voltage output corresponding to two measurement results (additional function) Relay: Three relay outputs, including normally open, normally closed, and common terminals (additional function)

SQY12-04 Dual channel high-precision intelligent speedometer（No image available）