1 Preliminary note 1.1 Symbols used ► Instructions > Reaction, result […] Designation of pushbuttons, buttons or indications → Cross-reference Important note Non-compliance can result in malfunction or interference� 2 Safety instructions • Please read the product description prior to set-up of the unit� Ensure that the product is suitable for your application without any restrictions�...
3 Functions and features The unit monitors the system pressure of machines and installations� Applications Type of pressure: relative pressure Permissible Order no. Measuring range Bursting pressure overload pressure PY9291 0���250 0���3625 5800 12300 PY9292 0���100 0���1450 4350 9400 PY9293 0���25 0���363 2175...
4.2 Switching function OUTx changes its switching state if it is above or below the set switching limits (SPx, rPx)� The following switching functions can be selected: • Hysteresis function / normally open: [OUx] = [Hno] (→ fig. 1). • Hysteresis function / normally closed: [OUx] = [Hnc] (→ fig. 1). First the set point (SPx) is set, then the reset point (rPx) with the requested difference�...
5 Installation Before installing and removing the unit: make sure that no pressure is applied to the system� ► Insert the unit in a G¼ process connection� ► Tighten firmly� 6 Electrical connection The unit must be connected by a qualified electrician� The national and international regulations for the installation of electrical equipment must be adhered to�...
7 Operating and display elements 3 4 5 6 Mode/Enter 1 to 8: indicator LEDs - LED 1 to LED 3 = system pressure in the unit of measurement which is indicated on the label� - LEDs 4, 5 and 6: not used� - LED 7, LED 8 = switching state of the corresponding output�...
8.2 Explanation of the menu SP1/rP1 Upper / lower limit value for system pressure at which OUT1 switches� SP2/rP2 Upper / lower limit value for system pressure at which OUT2 switches� Output function for OUT1: • Switching signal for the pressure limit values: hysteresis function [H ��] or window function [F ��], either normally open [�...
9 Parameter setting During parameter setting the unit remains in the operating mode� It continues its monitoring functions with the existing parameters until the parameter setting has been completed� 9.1 General parameter setting 3 steps must be taken for each parameter setting: Select parameter ►...
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Mode/Enter Set ► Press [Set] and keep it pressed until the valid code no� is displayed� ► Press [Mode/Enter] briefly� When delivered by ifm electronic: no access restriction� ► Press [Set] briefly� > The first parameter of the submenu is Mode/Enter Set displayed (here: [Uni])�...
• Timeout: If no button is pressed for 15 s during parameter setting, the unit returns to the operating mode with unchanged values� 9.2 Configure display (optional) ► Select [Uni] and set the unit of measurement: - [bar], [MPa], [PSI]� ►...
9.4 User settings (optional) 9.4.1 Set delay for the switching outputs [dS1] / [dS2] = switch-on delay for OUT1 / OUT2� [dr1] / [dr2] = switch-off delay for OUT1 / OUT2� ► Select [dS1], [dS2], [dr1] or [dr2] and set a value between 0�1 and 50 s (at 0�0 the delay time is not active)�...
10 Operation After power on, the unit is in the Run mode (= normal operating mode)� It carries out its measurement and evaluation functions and provides output signals according to the set parameters� Operation indication → chapter 7 Operating and display elements. 10.1 Read set parameters ► Press [Mode/Enter] until the requested parameter is displayed� ►...
12 Factory setting Factory setting User setting 25 % VMR* 23 % VMR* dESI 75 % VMR* 73 % VMR* * = The indicated percentage of the final value of the measuring range (VMR) of the corresponding sensor is set in bar�...
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