Table of Contents
Advertisement
Advertisement
Table of Contents
Summary of Contents for IFM LT30 Series
- Page 1 Operating instructions Electronic level and temperature sensor LT30xx...
-
Page 2: Table Of Contents
Contents 1 Preliminary note ....................4 1.1 Symbols used ....................4 2 Safety instructions ....................5 3 Functions and features ..................6 3.1 Application area ....................6 3.2 Restriction of the application area ..............6 4 Getting started .....................6 4.1 Example configuration 1 ................7 4.2 Example configuration 2 ................8 5 Function .......................9 5.1 Measuring principle level ................9 5.2 Measuring principle temperature ..............9... - Page 3 8 Operating and display elements ................25 9 Menu ........................26 9.1 Menu structure .....................26 10 Parameter setting ....................27 10.1 Parameter setting in general ..............27 10.2 Basic settings ...................28 10.2.1 Assign process values to the outputs [SEL1] / [SEL2] ......28 10.2.2 Assign process value to the display [SELd] ........28 10.2.3 Define unit of measurement for level [uni.L] ........28 10.2.4 Set the unit of measurement for the temperature [uni.T] ....28 10.2.5 Set the offset [OFS] ................29...
-
Page 4: Preliminary Note
13.1 Setting values [OFS] ..................37 13.2 Setting ranges switching limits for level .............37 13.3 Setting ranges switching limits for temperature .........37 13.4 Setting values [OP] ..................38 13.5 Calculation aids [OP] .................39 13.5.1 Definition "from the cover“ ..............39 13.5.2 Definition "from the bottom“ ..............39 13.6 Setting ranges [ASP2] and [AEP2] ............40 14 Maintenance / cleaning / change of medium ..........40 14.1 Maintenance information for operation without overflow prevention ..40... -
Page 5: Safety Instructions
2 Safety instructions • The device described is a subcomponent for integration into a system. - The manufacturer of the system is responsible for the safety of the system. - The system manufacturer undertakes to perform a risk assessment and to create a documentation in accordance with legal and normative requirements to be provided to the operator and user of the system. -
Page 6: Functions And Features
3 Functions and features 3.1 Application area The unit was especially designed to meet the requirements of machine tool building. It is especially suitable for monitoring coolant emulsions (also dirty) as well as cutting and hydraulic oils. The unit monitors 2 process values: level and temperature. 3.2 Restriction of the application area •... -
Page 7: Example Configuration 1
4.1 Example configuration 1 Unit: LT3022 (probe length L= 264 mm) Medium to be detected: Mineral oil Operating mode: Manual media selection with overflow prevention (factory setting) (→ 5.3.1). Installation environment: Metal tank, installation to Fig. 4-1 ► Install unit. Fig. -
Page 8: Example Configuration 2
4.2 Example configuration 2 Unit: LT3023 (probe length L= 472 mm) Medium to be detected: Coolant emulsion Operating mode: Automatic medium detection (→ 5.3.1) Installation environment: Metal tank, installation to Fig. 4-2. Fig. 4-2 ► Install unit. ► Observe the distances (x), (u) and (c): min. -
Page 9: Function
5 Function 5.1 Measuring principle level The sensor determines the level according to the capacitive measuring principle: • An electrical field [E] is generated Fig. 5-1 and influenced by the medium to be detected. This change to the field causes a measurement signal that is electronically evaluated. -
Page 10: Operating Principle / Features Of The Unit
5.3 Operating principle / features of the unit The unit can be installed in tanks of different sizes. Observe the notes on installation. 2 outputs are available. They can be set separately. OUT1 • Switching signal for level limit value / IO-Link •... -
Page 11: Notes On The Integrated Overflow Prevention
5.3.2 Notes on the integrated overflow prevention With the parameter [OP] (OP = overflow prevention), one of the upper measuring segments is defined as integrated overflow prevention. • If the overflow prevention OP is activated, an adjustment to the installation situation has to be made [cOP]. -
Page 12: Analogue Function
5.5 Analogue function The unit provides an analogue signal proportional to the level / temperature. The analogue output (OUT2) can be configured: • [SEL2] assigns the process value, level / temperature to the analogue output (→ 10.2.1). • [ou2] defines the output function of the analogue output, mA / V, (→ 10.3.2). •... - Page 13 [SEL2] = [LEVL] [OP] = [value ...] (overflow prevention OP activated) [ou2] = [InEG] or [UnEG] Fig. 5-4 Fig. 5-5 OP positioned in the upper segment. OP shifted downward. I [mA] / U [V] I [mA] / U [V] 20 / 10 20 / 10 4 / 0 4 / 0...
-
Page 14: Level Measurement Without Overflow Prevention
5.5.2 Level measurement without overflow prevention [SEL2] = [LEVL] [MEdI] = [Auto] or [OP] = [OFF] (overflow prevention OP deactivated) Fig. 5-6 Fig. 5-7 [ou2] = [I] or [U] [ou2] = [InEG] or [UnEG] I [mA] / U [V] I [mA] / U [V] I [mA] / U [V] I [mA] / U [V] 20 / 10... -
Page 15: Temperature Measurement
5.5.3 Temperature measurement [SEL2] = [TEMP] For temperature measurement the analogue signal can be scaled. The limits of the measuring range for the lower output signal (analogue start point = ASP2) and the upper output signal (analogue end point = AEP2) can be set. Minimum distance between [ASP2] and [AEP2] = 22 C°... - Page 16 Output function voltage output: Fig. 5-10 Fig. 5-11 Maximum measuring range at [ou2] = [U] Scaled measuring range at [ou2] = [U] U [V] U [V] 10.3 10.3 ASP2 AEP2 T [°C/°F] T [°C/°F] MAW = Initial value of the measuring range ASP2 = Analogue start point MEW = Final value of the measuring range AEP2 = Analogue end point...
-
Page 17: Switching Functions
5.6 Switching functions The unit signals via the switching output OUT1 that a set limit value has been exceeded or that the level is below the limit value. The switching output can be configured. • Parameter [SEL1] assigns the process value, level / temperature to the output OUT1 (→... -
Page 18: Offset For Indicating The Real Level In The Tank
In addition communication is possible via a point-to-point connection with a USB adapter cable. The IODDs necessary for the configuration of the unit, detailed information about process data structure, diagnostic information, parameter addresses and the necessary information about the required IO-Link hardware and software can be found at www.ifm.com. -
Page 19: Installation
6 Installation Fig. 6-1 Probe length u ... y: Minimum distances Zone for mounting elements Overflow prevention Maximum outside length Metal object inside the tank Table 6-1 LT3022 LT3023 T3024 [cm] [inch] [cm] [inch] [cm] [inch] L (probe length) 26.4 10.4 47.2 18.6... -
Page 20: Installation Instructions For Operation With Overflow Prevention
6.1 Installation instructions for operation with overflow prevention [MEdI] = [CLW..] or [OIL..] [OP] = [value ...] (overflow prevention OP activated) It is permitted to fix the mounting elements within the mounting zone (M) (Fig. 6-1). ► Observe the maximum permitted outside length (c) according to Table 6-1. ►... -
Page 21: Installation Instructions For Operation Without Overflow Prevention
6.2 Installation instructions for operation without overflow prevention [MEdI] = [Auto] or [OP] = [OFF] (overflow prevention OP deactivated) 6.2.1 Installation in the inactive zone Between the maximum level (b1) and the inactive zone (I1), minimum distance (a1) must be adhered to (see Fig. 6-2 and Table 6-3). ►... -
Page 22: Installation In The Active Zone
6.2.2 Installation in the active zone A minimum distance (a2) between maximum level (b2) and mounting element has to be observed (see Fig. 6-3 and Table 6-4). ► Fix mounting elements in the mounting Fig. 6-3 zone (M) (see Fig. 6-1). Adhere to maximum permitted outside length (c) (see Table 6-1). -
Page 23: Other Installation Notes
In case of automatic medium detection [MEdI] = [Auto] or deactivated overflow prevention [OP] = [OFF], the sensor reinitialises itself each time it is switched on and makes adjustments to the medium and the installation environment. The active zone / measuring range must not be completely covered by the medium. -
Page 24: Electrical Connection
7 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. ► Disconnect power. ► Connect the unit as follows: Core colours black OUT2... -
Page 25: Operating And Display Elements
8 Operating and display elements 3 4 5 6 Mode/Enter 1 to 8: Indicator LEDs LED 1 Indication in cm LED 2 Indication in inches LED 3 Indication in °C LED 4 Indication in °F LEDs 5 - 7 Not used LED 8 Switching status OUT1 (lights when output 1 is switched). -
Page 26: Menu
9 Menu 9.1 Menu structure - - - - 20.0 10.0 19.5 uni.L ASP2 uni.T °C AEP2 - - - - MEdl OIL.2 Lo.T 20.4 - - - - Hi.T donE FOU1 FOU2 SEL1 TEMP SEL2 LEVL LEVL SELd Menu items highlighted in grey, e.g. -
Page 27: Parameter Setting
10 Parameter setting 10.1 Parameter setting in general ► Press [Mode/Enter] until the requested parameter is displayed. To select parameters in the extended Mode/Enter Set menu (menu level 2): ► Select [EF] and briefly press [Set]. ► Press and hold [Set]. >... -
Page 28: Basic Settings
The unit can be configured before or after installation. Exemption: To adjust the overflow prevention [cOP], the unit must be installed in the tank. 10.2 Basic settings Setting ranges of all parameters: (→ 13) Factory settings of all parameters: (→ 15) 10.2.1 Assign process values to the outputs [SEL1] / [SEL2] ►... -
Page 29: Set The Offset [Ofs]
10.2.5 Set the offset [OFS] The distance between tank bottom and lower edge of the measuring probe can be entered as offset value (→ 5.7). For [OFS] = [0] the reference point = lower edge of the measuring probe. ► Set [OFS] before the values for SP1, rP1 and OP are entered. This avoids unintentional maladjustments. -
Page 30: Set The Overflow Prevention [Op]
10.2.7 Set the overflow prevention [OP] ► Comply with minimum distances and installation instructions. ► Select [OP]. ► Define the position of the overflow prevention OP. The option [OP] = [OFF] deactivates the overflow prevention OP. ► Set [OP] before [SP1] or [FH1]. >... -
Page 31: Setting Of Output Signals
Minimum distance between the overflow prevention OP and the level during adjustment: Table 10-1 [cm] [inch] LT3022 LT3023 LT3024 The position of the overflow prevention OP can be determined by calling up the parameter [OP]. Note the offset if necessary. The current level is to be determined manually since the unit is not yet ready for operation before the adjustment. -
Page 32: Set Output Function [Ou2] For Out2 (Analogue Output)
10.3.2 Set output function [ou2] for OUT2 (analogue output) ► Select [ou2] and set the output function: [I] = current output 4...20 mA [U] = voltage output 0...10 V [InEG] = current output 20...4 mA (inverted) [UnEG] = voltage output 10...0 V (inverted) 10.3.3 Define switching limits [SP1] / [rp1] (hysteresis function) ►... -
Page 33: Set Switching Delay [Ds1] For Switching Output
10.3.6 Set switching delay [dS1] for switching output ► Select [dS1] and set the value between 0.0 and 60 s. The switching delay reacts according to VDMA. 10.3.7 Set switch-off delay [dr1] for switching output ► Select [dr1] and set the value between 0.0 and 60 s. The switching delay reacts according to VDMA. -
Page 34: Notes On Parameter Setting Via Io-Link
11 Notes on parameter setting via IO-Link On delivery the LT30xx-type unit is not operational. First, the integrated overfill prevention OP has to be adjusted. Depending on the application, OP adjustment can be carried out in differ- ent ways: • directly on the display (→ 10). •... -
Page 35: Read The Set Parameters
[UL] Warning: temperature below approx. -30 °C / -25 °F. [OL] Warning: temperature exceeding approx. +100 °C / +215 °F. [----] Level below the active zone. [FULL] + [numerical value] The overflow prevention OP is reached (overflow warning) or alternately the level is above the active zone. -
Page 36: Error Indications
12.5 Error indications Table 11-2 Possible cause Recommended measures [Err] Fault in the electronics. ► Replace the unit. • Interfering sources (e.g. EMC) ► Check electrical connection. [SEnS] • Poor cables ► Check connection between the • Supply voltage disturbed sensor and the tank ground. -
Page 37: Technical Data
13 Technical data Technical data and scale drawing at www.ifm.com. 13.1 Setting values [OFS] Table 12-1 [cm] [inch] Setting range 0...200.0 0...78.8 LT3022 LT3022 LT3024 LT3024 LT3023 LT3023 Step increment The values of the following tables, setting ranges Table 12-2 and setting values Tab 12-4, apply to [OFS] = [0];... -
Page 38: Setting Values [Op]
13.4 Setting values [OP] Table 12-4 LT3022 LT3023 LT3024 [cm] [inch] [cm] [inch] [cm] [inch] 20,4 40,7 16,0 23,9 19,1 38,3 15,1 22,4 17,9 35,8 14,1 21,0 16,7 33,4 13,1 19,5 15,5 31,0 12,2 18,1 14,3 28,5 11,2 16,7 13,0 26,1 10,3 15,2... -
Page 39: Calculation Aids [Op]
13.5 Calculation aids [OP] For proper functioning of the overflow prevention OP a minimum distance (y) (Fig. 12-1) must be observed (→ 6.1). The following applies (Fig. 12-1): B: tank height L: probe length B + c = L + u c: outside length (maximal →... -
Page 40: Setting Ranges [Asp2] And [Aep2]
13.6 Setting ranges [ASP2] and [AEP2] Table 12-5 [°C] [°F] [ASP2] [AEP2] Step incre- ment 14 Maintenance / cleaning / change of medium When removing or installing the unit for maintenance and cleaning work: ► Make sure that the stainless steel tube clip is fixed to the sensor. >... -
Page 41: Factory Setting
90.0 (°C) MEdI OIL.2 OIL.2 OIL.2 20.4 (cm) 40.7 (cm) 61.0 (cm) ---- ---- uni.L uni.T °C Lo.T ---- Hi.T ---- FOU1 FOU2 SEL1 TEMP SEL2 LEVL SELd LEVL Parameter only available for [SEL2] = [TEMP]. More information at www.ifm.com...