Counting Timing Voltage Relay

Applications

Single phase voltage monitoring relay widely used in air conditioning units, elevator machine rooms, pumps, fans and so on other motor control applications because of muilt protect function , such as over voltage, under voltage, phase failure, phase sequence , phase unbalance and so on. When the power supply is not normal, turn off power supply immediately to protect the device.

Features:

Digital voltage sensing relay built-in microprocessors, true RMS voltage measurement, voltage measurement accuracy ≤1%. Measuring frequency 45Hz~64Hz, button setting, LCD display voltage and fault information, protection can be turned on or off. Check 3 phase voltage value by button, with counting and timing function. Record number and time of using devices. DIN rail mounting.

Single phase voltage monitor Model Description

12v 240v relay Function Setting Table

240 VAC Relay Code Table

Note: "ON" is protection available, "OFF" is protection unavailable.

Function diagram

Dimensions(mm)

Can a time relay also be called a timer?

The function of the timer in baiPLC is equivalent to a time relay. It has a set value register (one word length), a current value register (one word length) and unlimited contacts (one bit).

The timer accumulates 1ms, 10ms, 100ms, etc. clock pulses in the PLC, and when it reaches the set value, the output contact will act. The timer can use the constant K in the user program memory as the set value, or the content of the data register D described later as the set value. The data register here should have a power-off retention function. The address number and set value of the timer are specified as follows:

(1) Regular timer T0～T245

100ms timer T0～T199 total 200 points, each setting value range is 0.1～3276.7s;

46 points of 10ms timer T200～T245, each set value range 0.01～327.67s.

(2) Totalizing timer T246～T255

1ms totalizing timer T246～T249 has four points, each setting value range is 0.001s～32.767s;

A total of 6 points of 100ms totalizing timer T250～T255, each point setting value range 0.1s～3276.7s.

when

When reset input X2 is turned on, the counter is reset and the output contact is also reset.

(3) Action sequence of contact

The contact action sequence is shown in Figure 3.4. The timer starts timing after its coil is driven. After reaching the set value, when the first coil command is executed, its output contact will act. From driving the timer coil to its contact action is called the timer contact action accuracy time t, t=T+T0-α.

In the formula, T is the timer setting time, the unit is s; T0 is the scan period, the unit is s, α is the timer clock cycle, 1ms, 10ms, 100ms timer corresponds to 0.001, 0.01, 0.1, the unit is s.

Model significance:

ZHRV2-45 LCD display voltage relay, Multi funtion with Timing, Counting,Voltage, Phase and so on. One unit can help you solve many data problem. You can read, set or adjust the data directly by yourself. If you need any special or extra function, please feel free to contact us.We can also OEM , ODM for the customers requirenment.We are waiting for you.