CY-A Series intelligent electric isolation transducer can be easily used to measure many kinds of useful electrical parameters of single-phase, 3-phase-3-wire, 3-phase-4-wire power lines and in various industrial control and monitoring systems. One sensor/transducer can replace many kinds of single parameter transducers such as current, voltage, frequency, power, power factor and energy transducers etc. It can reduce the system cost and is easy for wiring at work site. Especially, its advanced isolation technology improves greatly the system performance and helps to carry the system reliability and stability to a higher level. CY-A Series is able to connect to any industrial digital control system with RS-485 bus communication technology and ASCII order set. So it is convenient to program and to extend the system. You can use it to build up your own control system easily.

The default configuration of each CY-A transducer before delivery: transducer address is set to "01"(hex), and baud rate is 9600bps.

• Transducer address is programmable. It can be set from 0 through 255(00-FFH) optionally.

• Five programmable baud rates can be used: 1200bps, 2400bps, 4800bps, 9600bps and 19200 bps.

• The configuration data will be stored in EEPROM after the transducer address and baud rate were revised.
  Set the baud rate: code of communication baud rate: 03---07

Measuring Range Selection:

You may select Series CY-A products with their measuring range of voltage (0~500V), current (1~25A). Usually 1.2 times of the maximum value of measuring range can be measured correctly.
The transducer could not be damaged when the inputs are less than 2 times of the maximum value of the voltage measuring range and 10 times of the maximum value of the current measuring range. Pay attention to connect the power polarity correctly with right rated voltage.

RS-485 Network:

Up to 31 transducers can be connected with a RS-485 bus; the maximum communication distance can reach 1.2km. The transducers can be connected directly to digital industrial control system with RS-485 interface. If the system has only RS232C interface available, RS-232C/RS-485 converter have to be used for data handshaking.

Configuration:

Each CY-A sensor/transducer must be configured before it is connected to a network. The baud rate of transducer must be conformed to that of the net. The address of transducer is not overlapping the address of any other device in the net (no address collision). To configure a transducer you need RS-485/RS232C converter, computer with RS-232C interface and the application software of intelligent transducer. The configuration can be completed easily by CY-A sensor/transducer application software. You should configure it by programming according to the order set of the transducer.

Data Acquisition:

When the computer sends one of read orders, the transducer will return (respond) the measured data to the computer. The data inside the EEPROM of the CY-A sensor/transducer will be refreshed every 250ms (the values of voltage and current etc. are RMS during the 250ms). Energy data is accumulated since powered-on and is cleared after received a clear order.
Output data is in the form of a percentage of the maximum value of its measurable range. Its format consists of 1 place of sign "+" or "-" and 5 digits of decimal data value and a decimal point. The frequency data is a real value of the frequency measured. Its conversion formula is as follows: