Contents 1 Preliminary note ���������������������������������������������������������������������������������������������������4 1�1 Key to the symbols ����������������������������������������������������������������������������������������4 2 Safety instructions �����������������������������������������������������������������������������������������������4 3 Functions and features ����������������������������������������������������������������������������������������4 4 Function ���������������������������������������������������������������������������������������������������������������5 4�1 Process measured signals ����������������������������������������������������������������������������5 4�2 Emissivity of the objects to be measured ������������������������������������������������������5 4�3 Switching function ������������������������������������������������������������������������������������������6 4�4 Analogue function ������������������������������������������������������������������������������������������7 4�5 Delay time for the switching output OUT1 �����������������������������������������������������8 4�6 Simulation function ����������������������������������������������������������������������������������������9...
Page 3
10�2�2 Emissivity for TW2000, TW2100 �����������������������������������������������������22 10�2�3 Emissivities for TW2001, TW2101, TW2011, TW2002 ���������������������23 10�2�4 Settings for limit value monitoring with OUT1 �����������������������������������24 10�2�5 Set the analogue signal for OUT2 ����������������������������������������������������24 10�3 User settings (optional) ������������������������������������������������������������������������������24 10�3�1 Set the standard unit of measurement for temperature ��������������������24 10�3�2 Set delay time for OUT1 �������������������������������������������������������������������24...
1 Preliminary note Technical data, approvals, accessories and further information at www�ifm�com� 1.1 Key to the symbols ► Instructions > Reaction, result […] Designation of keys, buttons or indications → Cross-reference Important note Non-compliance may result in malfunction or interference� Information Supplementary note�...
→ 10.2.3) are approximate values� To determine the temperature precisely a reference value measurement should be made� The reference value for TW2000 / TW2100 up to a temperature of 250 °C can be measured using the enclosed label To compensate environmental influences it may be useful to set a higher emissivity�...
4.3 Switching function OUT1 changes its switching state if it is above or below the set switching limits (SP1, rP1)� NO: [ou1] = [Hno] NC: [ou1] = [Hnc] First the set point (SP1) is set, then the reset point (rP1) with the request- ed difference�...
4.4 Analogue function The unit converts the measured signal into a temperature-proportional analogue signal ranging from 4���20 mA� The measuring range is scalable: • [ASP2] determines at which measured value the output signal is 4 mA� • [AEP2] determines at which measured value the output signal is 20mA� Measuring range in case of factory setting Measuring range in case of scaling I [mA]...
4.5 Delay time for the switching output OUT1 When a delay time is set (→ 10.3.2), OUT1 does not change its switching state right away when the set switching limits (SP1, rP1) are exceeded or not reached but only after the delay time (power-on delay time dS1, power-off delay time dr1) has elapsed�...
(1) Temperature curve of the medium (2) Hno (hysteresis function / normally open) (3) Hno with switch-on and switch-off delay (4) Hnc (hysteresis function, normally closed) (5) Hnc with power-on and power-off delay 4.6 Simulation function The simulation function is helpful when setting up the installation� Via the SIM menu (→...
4.8 Damping function If there are brief fluctuations in the temperature of the object to be measured, the damping function stabilises the measured signal� The higher the selected time constant dAP (→ 10.3.3 Set the measured value damping) the lower the influence of the interfering temperature fluctuations on the measured value�...
For correct orientation observe the measuring segment diameter (1) and the measuring distance (2)� The object to be measured should not be smaller than the measured spot diameter: [mm] 75 167 259 350 442 TW2000 ∞ 300 400 500 600 700 800 900 1000 3000 4000 5000 2000...
Page 13
For types TW21xx: ► Align the measuring head so that the green LED pilot light is visible on the object to be measured as a round light spot� 1 [mm] 21,2 18,1 11,9 17,2 24,9 32,5 10,3 16,6 20,9 25,3 TW2100 ∞...
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� Voltage supply according to EN 50178, SELV, PELV� The unit is supplied with 24 V DC (18���32 V DC) low voltage� The voltage supply must comply with the provisions of protective low voltage EN 50178, SELV, PELV�...
6.1 Screening and grounding The unit housing is connected to the cable screen via the connector� If there are potential differences between the grounding points, a compensation current can flow across the screen connected at both sides� In this case, lay an additional cable for equalisation of the potential�...
6: Alphanumeric display, 4 digits • Display of the temperature value • Display of the parameters and configuration • Error indication 8 Menu 8.1 Menu structure °C / °F EPSI ASP2 S.TMP PhLd AEP2 S.Tim S.On 8.2 Explanation main menu Parameter Function and setting options Emissivity: Correction of the radiation characteristics of the object to be...
Analogue start point with scaled measuring range for the analogue output ASP2 OUT2 Analogue end point with scaled measuring range for the analogue output AEP2 OUT2 Opening the lower menu level "Extended functions" 8.3 Explanation extended functions (EF) Parameters Function and setting options Reset to factory settings Switch-on delay for OUT1: Value in seconds (maximum 10 s in steps of 0�1 s)
9 Set-up When the supply voltage is switched on for the first time or after reset of the pa- rameters to factory setting, [ ] is displayed� The emissivity has to be set: ► Press [Enter]� [EPSI] is indicated in the display� ►...
10.1 Parameter setting in general Select parameter 1� Briefly press [Enter]� Enter 2� Press [▲] or [▼] until the requested parameter is displayed. Changing the parameter value 3� Briefly press [Enter]� Enter > The currently set value is displayed� 4�...
10.1.1 Switching between the menu levels Change to the ► Select [EF] or [SIM] and switch to the submenu by pressing submenu [Enter]� Back to the process ► Change from the submenu to the main menu, from the main value display menu to the process value display with [▲] or [▼] or timeout: ►...
2 s� After that, EPSI is displayed again� Confirm the requested value with [Enter]� TW2000 / TW2100 – Set emissivity with the supplied label (up to maxi- mum 250 °C): Ensure during the following measurements that the temperature of the object to be measured remains constant�...
10.2.4 Settings for limit value monitoring with OUT1 ► Select [ou1] and set the switching function: Menu EF: - Hno = hysteresis function/NO, [ou1] - Hnc = hysteresis function/NC Main menu: ► Select [SP1] and set the value at which the output is set� [SP1] ►...
10.4 Service functions 10.4.1 Reset all parameters to factory setting ► Select [rES]� Menu EF: ► Briefly press [Enter]� [rES] ► Keep [▲] or [▼] pressed. > [----] is displayed� ► Briefly press [Enter]� > [ ] is displayed� The emissivity has to be reset (→ 10.2.1)� We recommend taking down your own settings in a table before carrying out a reset (→...
13 Troubleshooting Display Error [SC1] flashes at 2 Hz Overload switching output LED OUT1 flashes at 4 Hz [ot] and the process value Overtemperature in the unit (> 75 °C) change at 0�5 Hz [ot ] and the process value Overtemperature in the unit (>...
15 Factory setting Parameter Factory setting User setting TW2000 TW2001 TW2002 TW2011 TW2100 TW2101 250 °C 500 °C 1000 °C 550 °C 230 °C 480 °C 960 °C 530 °C ASP2 0 °C 250 °C 500 °C 300 °C AEP2 1000 °C...
Need help?
Do you have a question about the TW2000 and is the answer not in the manual?
Questions and answers