SU0502 - Flow sensor IFM - Free user manual and instructions

USER MANUAL SU0502 IFM

process connection G½ / downstream M12 connector 7-segment display display of the current flow velocity

LPH (litre/hour) value = displayed value × 10The flow monitor detects the flow rate of water,

• shows the current flow rate on its display, (max. value displayed: final value of measuring range + 20%)

• and generates 2 output signals according to the set output configuration. Monitoring of cooling waterApplication Measuring and display range Scale drawing Function and features Seite 19 ENGLISH litre/min. 0.0 ... 40.0

For litre/hour, 1/10 of the LPH value is displayed. The displayed value must be multiplied by factor 10. Example: displayed value = 98; real value = 98 * 10 = 980 LPHNormal operating mode With power on and the power-on delay time elapsed* (approx. 10s) the unit is in the Run mode. It monitors and generates output signals according to the set parameters. The display indicates the current flow (can be deactivated, → page 25). The yellow LEDs indicate the switching state of the outputs. *During the power-on delay time the most important parameter values are displayed briefly, then the current measured value is indica- ted. Even if the display is deactivated (diS = OFF), the most important parameter values are indicated, then the current measured value is indicated for 15s, then the display goes out. Both outputs are switched according to the programming: ON with the NO function (Hno/Fno) and OFF with the NC function (Hnc/Fnc). Note: When the hysteresis function is active, the outputs remain in this switching state after the power-on delay time has elapsed if the flow is between SPx and rPx. If output 2 is configured as analog output, the output signal is 20mA or 10V. Indication of parameters and the set parameter values When the "Mode/Enter" button is pressed briefly, the unit passes to the Display mode which allows parameter values to be read. The inter- nal sensing, processing and output functions of the unit continue as if in Run mode.

• The parameter names are scrolled with each pressing of the "Mode/Enter" button.

• When the "Set" button is pressed briefly, the corresponding para- meter value is displayed for 15s. After another 15s the unit returns to the Run mode. Setting of the parameter values While viewing a parameter value pressing the "Set" button for more than 5s causes the unit to enter the programming mode. You can alter the parameter value by pressing the "Set" button and confirm the new value by pressing the "Mode/Enter" button. The internal sensing, pro- cessing and output functions of the unit continue as if in Run mode with the original parameter values unless a new value is confirmed. The unit returns to the Run mode when no button has been pressed for 15s. Run mode Display mode Programming mode Operating modes Page 20Seal the pipe threads (A) with liquid seal. Mount the unit in direction of the flow (arrow)*. Screw the pipes into the adapters (B) and tighten them. Tightening torque: 30Nm. Block the adapters by means of a spanner. Do not turn the 2 adapters (B). This would lead to a faulty sealing inside the housing. To avoid malfunction a minimum distance (5 x pipe diameter) between the flow monitor and bends, valves, changes in cross- section or such like must be observed (This information refers to lami- nar flow). *For certain mounting positions (unit vertical, flow direction horizontal) air bubbles in the system can affect the measurement after mounting. Briefly rinse the system after mounting (rinse flow rate > 3l/min.). Step 1 Step 2 Minimum distance Installation Page 21 ENGLISH Mode/Enter Set SP1 SP2

Mode/Enter Set SP1 SP2 min. 5 x D min. 5 x DThe unit must only be connected by an electrician. The national and international regulations for the installation of elec- trical equipment must be observed. Voltage supply to EN50178, SELV, PELV. Disconnect power before connecting the unit. Wiring: Electrical connection Page 22

2: OUT2 4: OUT1 Core colours of ifm sockets: 1 = BN (brown), 2 = WH (white), 3 = BU (blue), 4 = BK (black). 2 x p-switching

2: OUT2 4: OUT1 1 x n-switching / 1 x analogIf no button is pressed for 15s during the setting procedure, the unit returns to the Run mode with unchanged values. The unit can be electronically locked to prevent unwanted adjustment of the set parameters: Press (in Run mode) both pushbuttons for 10s. As soon as the indication goes out the unit is locked or unlocked. Units are delivered from the factory in the unlocked state. With the unit in the locked state is indicated briefly when you try to change parameter values. After mounting, wiring and setting check whether the unit operates correctly. Adjustable parameters

Mode/Enter Set Mode/Enter Set Mode/Enter Set Press the Mode/Enter button several times until the respective parameter is displayed. Press the Set button and keep it pressed. The current parameter value flashes for 5s, then the value is increased* (incremental by pressing briefly or scrolling by holding pressed). Press the Mode/Enter button briefly (= acknowledgement). The parameter is displayed again, the set parameter value becomes effective.

Change more parameters: Start again with step 1. Finish programming: Wait for 15s or press the Mode/Enter button until the current measured value is indicated again. *Decrease the value: Let the display of the parameter value move to the maximum setting value. Then the cycle starts again at the minimum setting value. Operation excess flow (flow > 120% of the final value of the measuring range) flashing: short circuit of the switching output 1 flashing: supply voltage too low (< 19V); the switching outputs are reset, the analog signal is reset to 0V / 0mA. flashing: short circuit of the switching output 2 flashing: short circuit of both switching outputsMenu structure → page 3Adjustable parameters Technical information / Functioning / Parameters Page 24 Switch-on point 1 / 2: Upper limit value at which the output changes its switching status. SP2 is active only if OU2 = Hno, Hnc, Fno or Fnc. Switch-off point 1 / 2: Lower limit value at which the output changes its switching status. rPx is always lower than SPx. The unit only accepts values which are lower than SPx. Changing the switch-on point also changes the switch-off point (the distance between SPx and rPx remains constant). If the distance is higher than the new switch point, it is automatically reduced: rPx is set to the minimum setting value (0.0). rP2 is active only if OU2 = Hno, Hnc, Fno or Fnc. Configuration of output 1 4 switching functions can be set: - Hno = hysteresis / normally open - Hnc = hysteresis / normally closed - Fno = window function / normally open

Fnc = window function / normally closed Configuration of output 2 4 switching functions and 2 analog signals can be set: - Hno = hysteresis / normally open - Hnc = hysteresis / normally closed - Fno = window function / normally open

Fnc = window function / normally closed

SP1 / SP2 rP1 / rP2 in steps of gallons/min litre/hour

ASP AEP in steps of gallons/min litre/hour

gallons/hour cubic metre/hour Lower end of analog output (Explanation → page 27) Measured value for which the output signal is 4mA / 0V. ASP is active only if OU2 = I or U. Upper end of analog output (Explanation → page 27) Measured value for which the output signal is 20mA / 10V. Minimum distance between ASP and AEP = 40% of the value of the measuring range. AEP is active only if OU2 = I or U. Inside pipe diameter Setting the flow monitor to the selected pipe size. Not implemented for this unit version (the preset value is displayed).

LPH (litre/hour) value = displayed value × 10Page 25 ENGLISH Technical information / Functioning / Parameters Enhanced functions This menu item contains a submenu with additional parameters. You can access these parameters by pressing the SET button briefly. Min-Max memory for flow rate:

• HI: displays the highest measured flow range

• LO: displays the lowest measured flow range Erase the memory: - Press the "Mode/Enter" button until HI or LO is displayed. - Press the "Set" button and keep it pressed until “- - -” is displayed. - Then press the "Mode/Enter" button briefly. It is recommended to erase the memory as soon as the unit starts working under normal operating conditions. Customer-specific calibration (Explanation

• page 26) If the function is active, the current flow value is displayed. - Press the SET button to set the requested value (scrolling by holding pressed; incremental by pressing briefly). - Acknowledge with the Mode/Enter button. After calibration the LED “calibration indicator” is lit. Calibration is only possible for values > 25% of the final value of the measuring range. For smaller values LO is displayed, the setting of the parameter is disabled. Setting range: -40% ...+40% of the final value of the measuring range; max. value displayed: final value of the measuring range + 20%. Calibration reset - Press the "Mode/Enter" button until CAr is displayed. - Press the "Set" button and keep it pressed until “- - -” is displayed. - Then press the "Mode/Enter" button briefly. The calibration set by CGA is reset; the LED “calibration indicator” no longer lights. Output polarity 2 options can be selected: - PnP = positive switching - nPn = negative switching This setting applies to both switching outputs. Setting of the display 2 options can be selected:

• OFF = The display is deactivated in the Run mode. When one of the buttons is pressed the current measured value is displayed for 15s. When the Mode/Enter button is then pressed, the display mode is opened. The LEDs indicating the switching state and the calibration indicator remain active even if the display is deactivated. Display unit 5 options can be selected: Lit = litre/min.; GAL = gallons/min.; LPH = litre/hour; GPH = gallons/hour; CPH = cubic metre/hour Labels for the different units of display are enclosed with the unit. Stick the respective label on the sensor or fill in the blank label. Select the display unit before setting the switch points (SPx, rPx) or the limits for the analog output signal (ASP, AEP). This avoids rounding errors generated internally during the conversion of the units and enables exact setting of the values. Start-up delay During this time special conditions apply to the switching of the outputs (Explanation

• adjustable in steps of 1s.

• setting range: 0 ... 50s (0 = start-up delay not active). The time applies to both outputs.This calibration changes the slope of the curve of measured values. It influences the display and the analog output. Calibration is only possible for values > 25% of the final value of the measuring range. It can be reset (→ menu item CAr). The hysteresis keeps the switch- ing state of the output stable if the flow varies about the preset value. When the flow is rising, the out- put switches when the switch-on point has been reached (SPx). When the flow is falling again, the output switches back when the switch-off point (rPx) has been reached. The hysteresis can be adjusted: First the switch-on point is set, then the switch-off point with the requested difference. The window function enables the monitoring of a defined accept- able range. When the flow varies between the switch-on point (SPx) and the switch-off point (rPx), the output is switched (win- dow function/NO) or not switched (window function/ NC). Customer-specific calibration (CGA) Hysteresis Window function Technical information / Functioning / Parameters Page 26

A = curve of measured values without calibration A1, A2 = curve of measured values after calibration displayWith the parameter "Lower end of analog output" (ASP) you can select the measuring value for which the output signal is 4mA or 0V. With the parameter "Upper end of analog output" (AEP) you can select the measuring value for which the output signal is 20mA or 10V. Minimum distance between ASP and AEP = 40% of the final value of the measuring range. The output signal is between 0 and 10V in the set measuring range. It is also indicated: Flow above the measuring range: output signal > 10V. The output signal is between 4 and 20mA in the set measuring range. It is also indicated: Flow above the measuring range: output signal > 20mA. Scaling the measuring range (analog output) Voltage output 0 ... 10V Current output 4 ... 20mA Technical information / Functioning / Parameters Page 27 ENGLISH U [V]

AEP ASP0 MEW factory setting measuring range scaled MEW = value of measuring range I [mA]

AEP ASP0 MEW factory setting measuring range scaled MEW = value of measuring rangeIf the start-up delay is active (dSt > 0), the following conditions apply: As soon as the flow has reached the value 3% of the final value (FV)

• the start-up delay starts and

• the outputs are switched according to the programming: ON with the NO function (Hno / Fno), OFF with the NC function (Hnc / Fnc). During the start-up delay 2 cases are possible:

• fast increase of flow, switch point / acceptable range are reached within dSt → outputs remain active.

• slow increase of flow, switch point / acceptable range are not reached (or flow falls below 3%) within dSt → outputs are reset. Start-up delay (dSt) Example dSt with hysteresis function: Technical information / Functioning / Parameters Page 28

Hno Hnc flow reaches 3% of the final value (FV) → dSt starts, the output becomes active dSt has elapsed, flow has reached SP → the output remains active flow falls below SP but remains above rP → the output remains active flow falls below rP → the output is reset flow reaches 3% of the final value again → dSt starts, the output becomes active flow reaches SP → the output becomes active dSt has elapsed, flow has not reached SP → the output is reset