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Summary of Contents for GHM-Martens STL4896
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English Operating manual Safety temperature limiter STL4896 Approved in accordance with: DIN EN 14597 (replacing DIN 3440) SIL 2 Company / brands of GHM www.ghm-messtechnik.de Save for later reference.
Intended use (areas of application) Refer to the chapter 'Product description' for detailed specifications for the area of application. The operational safety of the device is only assured when used as intended in accordance with the specifications in the operating manual. Intervention beyond the actions described in the operating manual may only be carried out by personnel authorised by the manufacturer for safety and warranty reasons.
GHM Group – Martens GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany info@ghm-group.de Phone +49-40-670 73-0 www.ghm-group.de 1.2 Safety instructions Read the product description before commissioning the device. Ensure that there are no limitations for use of the product for the relevant applications. The owner is responsible for ensuring the fault-free operation of the device.
Product description The STL4896 safety temperature limiter is used wherever thermal processes must be monitored and the system must be switched to a safe operating state in case of a fault. If the permissible temperature limit value is reached or an error occurs in...
GHM Group – Martens GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany info@ghm-group.de Phone +49-40-670 73-0 www.ghm-group.de Brief information Programming The device is programmed with the buttons on the front side in combination with the graphic display. Operating modes The device can be used as: STB →...
2.7 Electrical installation The device may only be installed by an electrician. Compliance with the national and international regulations for installation of electrical and electronic systems applicable in the respective country of use is DANGER mandatory. Pt100 input: The resistance of 4 Ω per line must not be exceeded. The corresponding line length for copper cable is specified in the table.
GHM Group – Martens GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany info@ghm-group.de Phone +49-40-670 73-0 www.ghm-group.de Controls and functional description 3.1 Operating and display elements 3.2 Operation The device is operated on 2 levels. The desired parameter is opened with the button.
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The device initialises after the supply voltage is connected. The device type and software version appear in the display. After the device is finished initialising, it enters the operating level and the current temperature and all safety-related settings are displayed. The peak value buffer is displayed by briefly pressing the button.
GHM Group – Martens GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany info@ghm-group.de Phone +49-40-670 73-0 www.ghm-group.de 3.3 Operating level Note: Only the resetting of the peak value buffer is possible on the working level Display Description Process display Only Pt100 Only thermocouple...
Note for the display Parameter only appears with appropriate configuration Parameter only appears with appropriate device version 3.4 Configuration level Display Description (entered values are factory settings) STB max. Pt100 Working level 19.2 ° Limit value 20.0 ° Actuate for 2s Language Language of user guidance >...
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GHM Group – Martens GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany info@ghm-group.de Phone +49-40-670 73-0 www.ghm-group.de Display Description (entered values are factory settings) Enter password Entry of the password for the security level (0010 in condition as delivered) 0000 After an incorrect password has been entered three times, the device enters a safety timeout for 60 minutes.
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Display Description (entered values are factory settings) Operating mode Note: Select operating mode STB for ASTB > STB max. Display Operating mode Alarm function STB max. Safety STB min. STB min. Temperature limiter; STW max. Safety Safety temp. limiter STW min. temperature monitor;...
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GHM Group – Martens GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany info@ghm-group.de Phone +49-40-670 73-0 www.ghm-group.de Display Description (entered values are factory settings) Limit value Alarm value (switching point) of the pre-alarm relay Change of the value in the corresponding measuring range. 20.0 °...
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Display Description (entered values are factory settings) Display Background lighting of the display > AUTO AUTO Lighting only goes out after only 2 min. if a button is not pressed. In case of an error and if the relay is switches off, the lighting switches on and remains active.
GHM Group – Martens GHM Messtechnik GmbH | Kiebitzhörn 18 | 22885 Barsbüttel | Germany info@ghm-group.de Phone +49-40-670 73-0 www.ghm-group.de 3.5 Error messages Display Description Caution! The supply voltage does not reach the value that is required for the Suppl. Voltage device to function safely.
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Error messages Display Description Pt100 A cable interruption was detect at the terminals of the Pt100. Broken Check connection lines and Pt100 probes. line Please check Pt100 The measurement exceeds the maximum temperature for Pt100 Measured val. probes. > 650 °...
In case of faults and errors If a fault occurs in the system, the cause must be rectified immediately. If the STL4896 safety temperature limiter is decommissioned for this purpose, the process must be safeguarded in another manner. If there is a device error, we request that you send the device to the factory with a brief description of the error.
24 V DC is connected to the appropriate terminals for an external alarm. After the simulator changes the temperature back to the good range, the STL4896 functions correctly if the relay is reactivated, in safety temperature limiter operating mode,...
Technical data Auxiliary energy Supply voltage 230 V AC ±10%, 115 V AC ±10%, 24 V AC ±15% or 24 V DC ±15% Power consumption < 4 VA Rated voltage 250V AC according to EN60664-1, between input / relay out- put / supply voltage Degree of contamination 2, overvoltage category III Test voltage...
Device transport and storage Gentle and tension-free packaging of the housing must be ensured for transport (no machine wrapping of the package). The device must be stored in the environmental conditions specified in the technical data. Return to manufacturer The legal regulations for environmental protection and our personnel require that devices which are sent back which have come into contact with liquid are handled without risk to people or the environment.
10 Notes Parameters Factory setting User setting Language deutsch Display unit °C Contrast display Password 0010 Input Decimal place Sensor correction 0.0°C Operating mode Limit value Alarm output 20°C Hysteresis Alarm output 2°C Max. Temperature difference 40°C of the thermocouples Pre-alarm function Pre-alarm value 20°C...
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