User guide

The main technical data of the device are presented in Table.

By operational completeness, the device belongs to second-order products.

Isolation of live circuits of the device meets the requirements of GOST R 52931.

The electrical insulation resistance of the current-carrying circuits of the device among themselves in accordance with GOST R 52931 is as follows:

• 20 MΩ (under normal environmental conditions);
• 5 MΩ (at the upper temperature value of the operating conditions);
• 1 MΩ (at the upper value of the relative humidity of the operating conditions).

The device is designed for operation in the following conditions:

• closed explosion-proof rooms without aggressive vapors and gases;
• ambient temperature: from -20 to +70 °С;
• relative humidity: max. 95 % (at ≤ 35 °C, non-condensing);
• atmospheric pressure: from 84 to 106.7 kPa.

In terms of resistance to mechanical influences during operation the device corresponds to group of performance N2 in GOST R 52931.

In terms of resistance to electromagnetic influences (interference resistant), the device corresponds to class A equipment according to GOST 51522.

By the level of radiation of radio interference (interference emissions), the device corresponds to class B equipment according to GOST 30804.6.4.

Notice

Requirements in terms of external influencing factors are mandatory as related to safety requirements.

To connect Device:

1. Fasten the bracket with three M4 × 20 screws on the surface intended for mounting (see Figure).
   Notice

   Screws for the bracket mounting are not included.
2. Hook the fixing bracket from the back panel of Device to the upper edge of the wall bracket.
3. Attach Device to the bracket with the supplied screw.

Demount Device in the reverse order.

Notice

Remove the cover before wiring. Fasten the base of Device to the bracket with a supplied screw.

Notice

The bushings need to be cut according to the diameter of the lead-in cable.

To connect Device:

1. Prepare a place for mounting on the control panel (see Figure).
2. Install the gasket on the frame of Device to ensure degree of protection IP54.
3. Insert Device into a specially prepared hole on the front of the control panel.
4. Insert the supplied retainers into holes on the sides of Device.
5. Tighten supplied screws M4 x 35 in the holes of each retainer so that Device is firmly pressed to the front of the control panel.

To ensure the reliability of electrical connections it is recommended to use copper stranded cables, the ends of which should be carefully cleaned and tinned. Otherwise use cable lugs before connection. Cable conductors should be stripped so that their bare ends do not protrude beyond the terminal strip after connecting to the device. The cable cross section must be not more than 1 mm².

General requirements for connection lines:

• During the cabling, communication lines that connect the Device with sensors must be isolated to a separate circuit (or several circuits) and placed separately from power cables or other sources of high-frequency and impulse interferences;

• To protect the Device inputs from the effects of industrial electromagnetic interference, the communication lines between Device and sensors should be shielded. Special cables with shielding or grounded steel pipes of suitable diameter can be used. The cable shielding should be connected to the functional ground terminal (FE) in the control panel;

• Network interference filters should be installed in the power supply lines;

• Spark-fighting filters should be installed in the switching lines of power equipment.

When installing the system in which the Device operates, you should follow the rules for effective grounding:

• all grounding lines must be laid in Y-connected circuit, ensuring good contact with the grounding element;

• all earthing circuits must be made with wires of the largest possible cross-section;

• it is forbidden to connect the device terminal "Common" with grounding lines.

Caution

After unpacking the device, make sure that the device has not been damaged during transportation.

If the device was kept for a long time at a temperature below minus 20 °С, then before turning it on and starting work, it should be kept in a room with a temperature corresponding to the operating range for 30 minutes.

To connect the device:

1. Connect the Device to a power source.

   Danger

   Before applying power to the Device, check that the supply voltage and its level are correct.
2. Connect primary transducers to the device inputs.
3. Apply power to the device.
4. Set up the device.
5. Make a test run of the device algorithm to verify that the settings are correct.
6. Power off the device.
7. Connect operating mechanisms to the device outputs.

Screw terminals are located on the back wall (panel-mounting) or inside the device (wall-mounting). The terminal block contacts assignment is shown in Figure.

Danger

Do not apply voltage to the device inputs (pins 9 – 12 of the terminal block) that is outside the range from 0 to 24 V.

Notice

Pin 13 is an internal power supply, required for connecting of switching devices and sensors.

If the power consumption of the input devices exceeds the load capacity of the internal power source (24 V), an external source with an output voltage of 12 to 34 V (recommended 24 V) is required.

Scheme for connection of the switching devices to the inputs is shown in Figure.

The connection diagrams of passive sensors with an n-p-n-type transistor with an open collector output are shown in Figure.

The device may not have outputs, have one analog or digital output or two outputs, one of which is analog, and the second is digital.

Danger

The outputs are galvanically isolated from the circuit of the device.

It is possible to use an internal 24 V power supply to power the output, which is used to power active sensors.

Analog outputs

The analog output can operate as a DAC in two modes: “parameter-current” (И) or “parameter-voltage” (У).

For normal operation of devices with an analog output of type И, the DAC must be powered from an independent DC source that provides galvanic isolation of the device’s electrical circuit and “connected mechanisms”. The voltage of the power source is calculated by the formulas:

U_{PS min}\leq U_{PS}\leq U_{PS max}U_{PS min}= 7.5 + I_{DAC max}\times R_{load}U_{PS max}= U_{PS min}+ 2.5

where U_PS is voltage of the power source, V;

U_{PS min} is the minimum allowable voltage of the power source, V;

U_{PS max} is the maximum allowable voltage of the power source, V;

I_{DAC max} is the maximum allowable current of DAC, mA;

R_load is load resistance of DAC, kΩ.

Danger

The U_SP value must be included in the allowable range of the supply voltage (from 10 to 36 V).

If for any reason the voltage of the DAC power supply exceeds the calculated value U_{SP max}, then the limiting resistor should be connected in series with the load, the resistance of which is calculated by the formulas:

R_{limit min} < R_{limit nominal} < R_{limit max}R_{limit min} ={U_{PS}-U_{PS max}\over I_{DAC max}}R_{limit max} ={U_{PS}-U_{PS min}\over I_{DAC max}}

where R_{limit nominal} is nominal value of the limiting resistor, kΩ;

R_{limit min} is minimum permissible value of the limiting resistor, kΩ;

R_{limit max} is maximum permissible value of the limiting resistor, kΩ;

I_{DAC max} is the maximum allowable current of DAC, mA;

U_PS is voltage of the source used to power the DAC, V.

An example of the connection to the output of type И with a power source and load is presented in Figure.

An example of connection to the output of type У is shown in Figure.

Danger

The load resistance R_load connected to the DAC must be at least 2 kΩ.

The voltage of the output power source should be not more than 30 V.

Digital output

The digital output is an electromagnetic relay (type P) (see Figure). This output is used to control the load (on / off) directly or through more powerful control elements, such as starters, solid state relays.

Functional diagram of the device is shown in Figure.

The device has two digital inputs for connecting sensors (pulse counter and operating time counter). To the inputs of the device can be connected:

• sensors with output n-p-n-transistor with an open collector;
• sensors with a dry contact type output (reed switches).

The counting input of the device receives pulses from a sensor that controls one or more marks on the motor shaft.

The levels of the input signals are converted and processed in the matching unit, after which they are sent to the digital processing unit, where it occurs:

• filtering of input signals;
• measuring the instantaneous value of the shaft speed;
• measurement of operating time at the operating time counter;
• conversion of measured values into real physical quantities;
• scaling of values before their output to the display;
• generation of signals for controlling the outputs according to a specified algorithm.

Notice

The parameter-current/voltage conversion is carried out using the built-in output of a ten-digit DAC. The signals obtained after the conversion can be used to register parameters.

Control unit includes buttons for entering parameters and controlling the operation of the device.

Display unit displays the measurement results or operating parameters on the indicators and shows the device status using LEDs.

Internal power supply, depending on the version of the device (with AC or DC power), converts the supply voltage for all units of the device and generates a signal indicating the loss of supply voltage. It also generates a DC voltage to power the sensors connected to the inputs of the device.

Using the RS-485 interface, the device is connected to a PC, which makes it possible to set and edit the configuration of the device, to monitor its current status and readings.

Elements of indication and control are located on the front panel of the device (see Figures and):

• seven-segment six-digit display;
• five LEDs;
• four buttons.

Display function

Operating mode	Displayed information	Refresh rate
Tachometer	The current value of the pulse repetition rate obtained after filtering and averaging, taking into account scaling at the measuring input of the device	≤ 6 s (equal to the duration of the time interval between the leading edges of the pulses at the measuring input of the device)
Notice If the pulse repetition rate is less than 2.5 Hz or the pulse source disappears, then the last measured value is displayed on the digital clock for 6 seconds, after which 0 will be highlighted. If the pulse repetition rate exceeds the maximum value with a positive tolerance of 2 % (FrEQ × 1.02), then the last measured value is displayed on the display for 6 seconds, after which the value recorded in the FrEQ parameter flashes.
Operating time counter	Operating time	1 s
Setup	Parameter name and value	—

Assigning LEDs

LED	State	Value
		Tachometer mode	Operating time counter
	ON	Measurement of operating time is in progress
Ч*	ON	Display scale – rph	Range of operating time (DDDD.HH) – from 10000 h to 9999 days 23 h
М*	ON	Display scale – rpm	Range of operating time (HHHH.MM) – from 100 h to 9999 h 59 min
С*	ON	Display scale – rps	Range of operating time (HH.MM.SS) – from 0 to 99 h 59 min 59 s
Notice * In USER mode, these LEDs are off.
ВЫХ	ON	• The digital output is enabled according to the selected logic. • A digital signal corresponding to the maximum current / voltage value is applied at the analog output
Notice For devices with two outputs (discrete and analog), the LED glows in accordance with the logic of the digital output.

Buttons Assignment

Button	Operating mode of the device	Function
	Operation	Switch to setup mode
	Setup	Switch to editing a parameter value after selecting it
	Operation	Switch to the display of operating hours counter values (hold )
	Setup	• Enter a password to change the settings (if it is not 0). • View parameter values and edit them
	Setup	Selecting an editable digit when changing a parameter value and entering a password (used with the and buttons)

The device can perform following functions:

• tachometer;
• operating time counter.

The signals arriving at the counting input of the device are filtered. The filter is characterized by the minimum allowable pulse and pause lengths (minImp parameter, ms). All pulses and pauses less than the specified duration are perceived as bounce and ignored.

The recommended value for this parameter is calculated as follows:

where MaxFreqRele is the maximum frequency (up to 100 Hz) of switching a dry contact relay.

For input frequencies greater than 100 Hz, set minImp = 10 μs.

The principle of operation of this parameter is shown in Figure:

• 1: pulse duration and pause duration greater than minImp – the signal is passed through the bounce protection system;
• 2: the pulse duration is less than minImp – the signal is not passed by the bounce protection system;
• 3: the pulse duration is greater than minImp, but the pause duration is shorter than minImp – the signal is not skipped by the chatter protection system.

Tachometer mode

When performing the function of a tachometer:

• device measures the instantaneous value of the duration of the time intervals (T) between the leading or trailing edges (in s);
• device calculates the value of N / T, where N is the value determined by the dimension of the display of the measured value;
• device displays the obtained value taking into account the scaling factor.

The tachometer measurement interval is set by the dttA parameter in:

• rps (N = 1);
• rpm (N = 60);
• rph (N = 3600)
• custom values (N = F × 10^-FdP, where F and FdP are variable parameters).

If F × 10^-FdP < 1, the values dependent on dttA (FrEQ, UdAC, dPro, LOR, HIR, UdO, dU) can be less than 1 (for example, 0.25) and displayed on the display as 0. This occurs because fractional display is not supported. But in the operation of the device, values with a fractional part will be used.

The dttA value affects the upper and lower limits of the FrEQ parameter. That is, the limits are recalculated in accordance with the coefficient N. For example, the values of the FrEQ parameter lie in the range [1; 2500]. With the coefficient N = 60, the boundaries of the FrEQ parameter will be as follows:

• lower limit: 1 × 60 = 60;
• upper limit: 2500 × 60 = 150000.

Counting results are shown on the display. Calculation units are displayed in the form of highlighting of single LEDs (see Table for details).

Notice

1. Rounding of the measurement results is carried out in a standard mathematical way, in a big way. That is, if in a rounded digit a digit is more than or equal to 5, then one is transferred to the next digit. If the measured value lies within 0.2 ... 0.5 Hz inclusively, then a value of 1 is transmitted via Modbus to indicate the presence of a signal.
2. If the digit capacity is not enough to display the selected number of digits after the decimal point, the device automatically shifts the number to the right.

An eighth-order moving average filter is used to damp the signal in the device. The MAV.L parameter defines the minimum time (in seconds) for filling the filter buffer. Adding a new value to the buffer will be done not earlier than in (MAV.L / 8) seconds. At input frequencies less than or equal to (8 /MAV.L), the settling time of the input signal to the digital signal can be longer than MAV.L. By default, this filter is enabled.

Operating time counter

The Setup mode is intended for viewing and editing the device parameters. New parameters are saved to non-volatile memory of the device.

To enter the setup mode, press and hold the button for at least 2 seconds.

Using , and enter the password, and then press and . If the password is 0 (default), press .

Notice

If you forgot your password, you can enter the settings mode using the password 1098! Further password changes are available only on the RS-485 network.

If no button operations are performed within 2 minutes:

• when editing a parameter, the device automatically restores its value and returns to the parameter viewing mode;
• when setting the parameter, the device automatically returns to tachometer mode.

Device settings and the possible values of each of the parameters are presented in Figures– and in Appendix.

Notice

Upon entering the settings menu, the device does not stop functioning in the operating mode (it continues to measure the time interval between pulses, counts the operating time, controls the operation of the output).

To enter the calibration mode, press and hold the and buttons for at least 2 seconds.

Using , and buttons enter the password, and then press and . If the password is 0 (default), press .

To exit the menu in the parameter viewing mode, press the button .

The calibration parameters and the display of the possible values are shown in Figure.

Notice

For calibration, the value of the oUtdAC parameter must be other than 0.

Device digital output (type P) functions as a comparison device (comparator).

The input value of the comparison device:

• tachometer measurement result (SrcC = tACHo) – control mode is selected using the oUtdo parameter;
• measured value of the operating time (SrcC = LiFE_T) – the output is switched on when the setpoint is reached to control the digital output for the operating time UdAY, UHour, UMin, USEc.

When the output is turned on, the ВЫХ LED lights up.

It is possible to work according to one of the following types of logic (see Figures and):

• reverse hysteresis (oUtdo = 1) – output turns on at values F_current > (U+Δ) and turns off at values F_current < (U-Δ);
• direct hysteresis (oUtdo = 2) – output turns on at values F_current < (U-Δ) and turns off at values F_current > (U+Δ);
• П-shaped logic (oUtdo = 3) – output is turned on at values (U-Δ) < F_current < (U+Δ);
• U-shaped logic (oUtdo = 4) – output is turned on with the values F_current < (U-Δ) and F_current > (U + Δ).

Notice

1. With П- or U-shaped logic, to suppress bounce during switching, there is an additional hysteresis of operation of 5 % of the range between the limits (2Δ) (see Figure).
2. When the pulse repetition rate at the counting input is more than FrEQ, the value equal to the value calculated for FrEQ is set at the output.

Recommendations for setting the output:

• set oFFdo = 0 and oUtdo = 0;

• specify values in Udo and dU. It is recommended that Udo, dU, the upper and lower limits do not go beyond 0 and FrEQ;
• set the desired output logic (oUtdo).

Digital output control is disabled when oUtdo = 0. The output status is set using the oFFdo parameter.

Analog output of the device (types И, У) functions as a П-controller and a recorder. The operation mode of the analog output is set using the oUtdAC parameter.

When the output operates as a П-controller, the current value of the measured value is compared with the preset setpoint (UdAC parameter) and the output signal is from 4 to 20 mA (for type И) or 0 to 10 V (for type У) proportional to the deviation. The direct proportionality zone is set by the parameter Δ (dPro). The output signal is generated in accordance with the regulator characteristic set in the oUtdAC parameter, either in direct proportion (1) or inversely proportional (2) regulation law. Graphs explaining the principle of forming the control current and voltage of the П-controller for both characteristics are shown in the Figures and.

When the output works as a recorder (oUtdAC = 3), the following occurs:

• comparing the measured value with the set values of the lower limit of the recording range and the value of the entire recording range;
• issuing an analog signal to the corresponding output in the form of a current from 4 to 20 mA (for output type И) or voltage from 0 to 10 V (for output type У), which can be fed to a recorder or other recording device.

The principle of generating the output signal is shown in Figures and. When the output is working as a recorder, the lower and upper limits of registration should be set in the Lor and Hir parameters.

Notice

When the measured value goes beyond the recording range, the error level is set at the output: 20.2 mA (for type И output), more than 10.5 V (for type У output).

When oUtdAC = 0, the operation control of the analog output is disabled. The output status is set by oFFdAC parameter.

To configure the device with a PC, communication interfaces RS-485 is used. The device supports two communication protocols: MODBUS RTU and MODBUS ASCII. Addresses, names and lengths of the device parameters are given in Appendix.

To go to the device settings from a PC, press and hold the and buttons for at least 2 seconds.

Then use the , and buttons to enter the password, and then press and . If the password is 0 (default), press .

To exit the menu in the parameter viewing mode, press the button .

Settings for communicating with a PC and displaying on the digital indicator the possible values of each of the parameters are presented in Figure.

Caution

Cut off all power before maintenance.

The maintenance includes:

• cleaning of the housing and terminal blocks from dust, dirt and derbis
• checking the device fastening
• checking the wiring (connecting leads, fastenings, mechanical damage)

Notice

The device should be cleaned with a damp cloth only. No abrasives or solvent-containing cleaners may be used.

Calibration is intended to restore the metrological characteristics of the device in case of their change after prolonged use or repair work and consists in selecting the minimum and maximum values of the output signal.

Danger

Calibration of the device should be carried out only by qualified specialists of metrological services.

Calibration is carried out only for analog outputs. To do this:

• connect the load (R_load) and a voltmeter to the output according to Figures (for output of type У) and (for output of type И);
• apply power to the device.

Notice

As R_load, you can use the resistance box P4831 or similar with an accuracy class of not more than 0.05, and as a voltmeter, a device with an accuracy class of not more than 0.05, for example, B1-12.

0 is displayed – the device is in operating mode.

The calibration algorithm for analog output:

1. By changing the DAC code and controlling the current (voltage) at the output of the analog device, to achieve the value of the output signal corresponding to the lower limit of the output current or voltage (in general, 4 mA or 0 V).
2. Commit the current DAC code as the lower desired limit of the signal at the output of the analog device.
3. By changing the DAC code and controlling the current (voltage) at the output of the analog device, to achieve the value of the output signal corresponding to the upper desired limit of the output current or voltage (in the general case, 20 mA or 10 V).
4. Commit the current DAC code as the upper desired current limit at the output of the analog device.
5. Set APPLY parameter to YES.
6. Exit the calibration menu.

Notice

To apply the calibration parameters, you need to edit both LdAC and HdAC.

Calibration can be carried out using the service menu of the device or via the RS-485 network.

The commands used when calibration over the RS-485 network are given in Appendix (section “Calibration”).

Set the LdAC and HdAC parameters to achieve that the value of the output signal corresponds to a lower or upper desired limit of the output current (voltage). The first submission of these commands is considered the implementation of paragraphs 2 and 4 of the calibration algorithm, respectively.