Electronic scale with standing aid, easily manoeuvrable, pre-tara function with three adjustable values, turnable display and operating housing (37 pages)
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Electronic platform scales with high load-bearing capacity and castors for transport When servicing or repairing seca devices according to this service manual, always take note of the instruction manual of the product. To download the latest version of the instruction manual and EMC www.seca.com...
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General information seca Electronics (NEC2) Service Instructions ODEL [374|376|378|703|704|264|274|284|285|634|635|644|645| 656|657|664|665|675|676|677|684|685|954|955|957|959| 963] 14.11.12/RLEU/ARI/MRE 1/40 30-34-00-812c...
General information seca Contents 1 General Information [374|376|378|634|635|644|645|656|657|664|665|674|675|676|677|684|685|70 3|704|264|274|284|285|954|957|959|963] ............5 Type Plates [374|376|378|634|635|644|645|656|657|664|665|674|675|676|677|684|685|70 3|704|264|274|284|285|954|957|959|963]............5 Design and Function of the Scale Part [374|376|378|703|704|634|635|644|645|656|657|664|665|674|675| 676|677|684|685|264|274|284|285|954|957|959|963] ........6 1.2.1 Design [374|376|378|703|704634|635|644|645|656|657|664|665|674|675|676|677|6 84|685|284|285] ..................6 1.2.2 Function [374|376|378|703|704634|635|644|645|656|657|664|665|674|675| 676|677|684|685|284|285]................6 Design and Function of the Head Slider [264|274|284|285] ....7...
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General information seca 2.1.6 Example: Adjusting a Scale with 100g Graduations [703|704|284|285|634|635|644|645|656|657|664|665|675|676|677 |684|685] ....................13 2.1.7 Example: Adjusting a Baby Scale with 10g Graduations [374|376]..................... 13 2.1.8 Overview of Adjusting a Scale with 100g Graduations [703|704] 14 2.1.9 Overview of Adjusting a Baby Scale with 10g Graduations [374|376|378] ....................
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General information seca 4 Measurements [374|376|378|703|704|284|285|634|635|644|645|656|657|664|665|674|675|67 6|677|684|685|954|957|959|963]..............27 Supply Voltage [374|376|378|703|704|284|285|634|635|644|645|656|657|664|665|674|675|67 6|677|684|685|954|957|959|963] ..............27 Load Cell [374|376|378|703|704|284|285|634|635|644|645|656|657|664|665|674|675|67 6|677|684|685|954|957|959|963] ..............27 4.2.1 Measurement Using a Multimeter [374|376|378|703|704|284|285|634|635|644|645|656|657|664|665|674|675| 676|677|684|685|954|957|959|963] ............27 5 Software intended Purpose ................30 Installation and Start ................30 Updating the Radio Module Software..........
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General information seca 1 General Information 374|376|378|634|635|644|645|656|657|664|665|674|675|676|677 |684|685|703|704|264|274|284|285|954|957|959|963 These service instructions are intended for specialist staff responsible for maintenance and repair of the devices. These persons must be familiar with all the relevant electro-technical regulations and must adhere to them any time.
General information seca Design and Function of the Scale Part [374|376|378|703|704|634|635|644|645|656|657|664|665|674|675| 676|677|684|685|264|274|284|285|954|957|959|963] 1.2.1 Design [374|376|378|703|704634|635|644|645|656|657|664|665|674|675|6 76|677|684|685|284|285] The scale consists of the following main parts: the frame with up to four load cells, a display unit, a key panel and a power supply unit.
General information seca Radio module NEC2 Compact module 08-06-18-172 (Weight measurement and display) 08-06-18-167 oder -163 Keyboard DC Supply Load Load Load Load cell cell cell cell Figure 3: Functional diagram [374|376|378|703|954|957|959|963] Design and Function of the Head Slider [264|274|284|285] The head slider uses the measuring method of visual reading off from the insert scale.
Maintenance seca Maintenance [374|376|378|703|704|634|635|644|645|656|657|664|665|674|675 |676|677|684|685|264|274|284|285|954|957|959|963] The following section provides an overview of all maintenance jobs which can be carried out. To call up the Service Menu, start the scale while pressing another key at the same time. This causes the content of the calibration counter (i.e. the number of adjustment operations carried out so far) to be displayed for 24 seconds (flashing).
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Long keypress (any key) o XXX.XX (firmware version, e.g. 290.07) Software identification and check digit: The existing seca firmware version number is retained and can be called up. Firmware software identification Each and every firmware is given its own software identification number.
Device check digit The overall check digit for the device is the total of the individual check digits. Representation on display Hardware module Firmware version with index / internal seca value PTB version number PTB check digit Weight module Display...
The readjustment device must be protected against inadvertent use. Scale adjustment can be carried out manually as described in section 0” or using seca serva 2.0. Manual adjustment will not correct any corner errors. 2.1.2 Calibration Counter / Number of Adjustments...
Contents [284|285] To begin readjustment or to display the calibration counter contents, start the scale and press another key while the display shows seca. The contents of the calibration counter (i.e. the number of adjustment procedures carried out so far) are then displayed for 18 seconds (flashing).
Maintenance seca 2.1.6 Example: Adjusting a Scale with 100g Graduations [703|704|284|285|634|635|644|645|656|657|664|665|675|676|677 |684|685] The selected test weight is 200 kg. The current weight shown on the display is 199.7 kg (max. deviation of 300 g). In this example, you must switch the scale to incrementing mode to carry out readjustment.
Maintenance seca 2.1.8 Overview of Adjusting a Scale with 100g Graduations [703|704 Action carried out by the user Result The scale is switched off. No values or characters on the display. Press the tare/hold key and keep it The contents of the calibration counter pressed while simultaneously pressing flash on the display for 18 seconds.
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Maintenance seca less than 1.5 seconds). change the value on the display due to the low display resolution. Only the rounded value is output. Repeat this step until the measured The display indicates the test weight weight matches the test weight (format: (format: xxx.0 kg).
Maintenance seca 2.1.9 Overview of Adjusting a Baby Scale with 10g Graduations [374|376|378] Action carried out by the user Result The scale is switched off. No values or characters on the display. Press the tare/hold key and keep it The contents of the calibration counter pressed while simultaneously pressing flash on the display for 18 seconds.
Maintenance seca Again briefly press the tare/hold key (for incremented by 1 g. less than 1.5 seconds). Repeat this step until the measured The display indicates the test weight weight matches the test weight (format: (format: xx.000 kg). xx.000 kg).
Maintenance seca Setting the Gravity Factor [374|703|634|644|656|664|674|676|684|284|954]: gravity factor only non-approved models [374|703|634|644|656|664|674|676|684|284|954] Before the gravity factor can be set, the scale must first be switched to adjustment mode (see section 2.1.3 or 2.1.4). While the calibration count is displayed, a key must be kept pressed (for more than 1.5 seconds) to switch the scale to adjustment mode.
Maintenance seca 2.3.1 Example for Gravity Factor Setting [374|703|634|644|656|664|674|676|684|284|954] The current gravity factor shown on the display is 98135 kg mm/s². The target gravity factor is 98150 mm/s². In this example, you must switch the scale to incrementing mode to set the gravity factor.
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Maintenance seca seconds. and then the current gravity factor - also flashing. Decide whether to decrement or to increment: Incrementing: Press the tare/hold key for more than 1.5 Incrementing mode is activated; "inc" seconds. appears on the display. Decrementing: No action required as the No output on the display.
Errors seca 3 Errors [374|376|378|703|704|634|635|644|645|656|657|664|665| 674|675|676|677|684|685|954|957|959|963] The following section provides an overview of possible error symptoms, their causes and the steps required to remedy the error. In addition, the error messages generated by the device and ways to eliminate them are explained.
Errors seca Error Symptoms for Head Slider [264|274|284|285] Error description Possible causes Remedy Battery not inserted or flat Check the batteries See section 4.1 Voltage supply defective Head slider does Check cable not start connections, check Key panel defective or not...
Errors seca Radio Error Symptoms [374|376|378|703|704|284|285|634|635|644|645|656|657|664|665| 674|675|676|677|684|685|954|957|959|963] Error description Possible causes Remedy Device does not transfer any data Repeat teach-in Teach-in phase not when the SEND phase (see operating completed out successfully or PRINT key is instructions) pressed Device beeps...
Scale Error Messages [374|376|378|703|704|284|285|634|635|644|645|656|657|664|665| 674|675|676|677|684|685|954|957|959|963] Display: Er:x:nr Electronics detecting a fault. X : Module number No Fault number Scale displays Cause Remedy seca serva diagnosis: replace load cell or Load cell defective, electronics as Er:X:11 supply lines damaged or required electronics defective...
(if provided) Isolate briefly (60 sec) Er:X:40 EEPROM data faulty Readjust the scale or upload the scale adjustment data to the EEPROM via seca serva 2.0 Er:X:41 Incorrect EEPROM Replace the access electronics Er:X:43 EEPROM defective Replace the electronics...
Errors seca Er:X:43 EEPROM defective Replace the electronics Er:X:45 EEPROM defective Replace the electronics Er:X:57 Quartz does not oscillate Replace the electronics Radio Error Message [374|376|378|703|704|284|285|634|635|644|645|656|657|664|665| 674|675|676|677|684|685|954|957|959|963] Display: Er:x:nr Electronics detecting a fault. X : Module number No Fault number...
The most effective way to identify a defect of the load cell is using the diagnosis function of seca serva 2.0; if this is not available you can alternatively use a multimeter (see 4.2.1). A multimeter measurement, however, is less conclusive so that it should always be second choice.
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Measurements seca Measurement between Ohmic resistance [Ω] and Sig 4 (blue and red) ~250-300 V- and Sig (blue and white) ~250-300 and Sig- (red and black) ~250-300 ~250-300 and Sig- (white and black) /Sig-/V /V- and aluminium > 1000 M...
NEC2 electronics [374|376|378|703|704|284|285|634|635|644|645|656|657|664|665|674|675|676| 677|684|685|954|957|959|963] as well as the seca 360° wireless USB adapter [456] contain software to control wireless communications. This software can be updated using the Windows-based "seca wireless updater" program. Removing or replacing the radio modules is generally not required.
Updating the Radio Module Software Two cases can be distinguished: 1) The customer has a seca 360° wireless USB adapter [456] and has carried out set-up for his seca devices and this wireless USB adapter. In this case you should connect the customer's wireless USB adapter to your service PC and update the entire wireless group from your PC.
Software seca mode (the so-called download kernel). The “Refresh” button refreshes the display. Set-up Process This function corresponds to the set-up process carried out for a device. First of all, select the current wireless group on the left in the main window.
Software seca Updating the Radio Module Software The lower part of the main window is intended for the actual updating of the radio modules. The radio modules in the active wireless group are shown in a list together with a symbol.
The revision contained on the card is given on the sticker on the SD card. For the seca wireless printer 465, revision code 465d or more recent is required (or 465dc, 465dj, 465dr for the Chinese, Japanese or Russian version).
Set-up is not possible in updating mode – it would no longer be possible to identify the corresponding device. In rare cases, updating will fail entirely. The relevant radio module must then be reaced. The radio module can be returned to the seca headquarters for repair. 14.11.12/RLEU/ARI/MRE 35/40...
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ALL RIGHTS CONCERNING THIS DOCUMENT AND ITS HAMBURG CONTENTS RESERVED. Alle Rechte an und aus diesen 07.12.2011 19.11.2012 Unterlagen verbleiben seca gmbh. & co. kg. Schielmann J. Schmidt Nr. / NO. : Maßstab / SCALE : Werkstoff / MATERIAL : Benennung / TITLE :...
Replacement Instructions seca 664, 665 Safety measures Before starting any work on the scale, first disconnect the power supply (mains and batteries). II Safety instructions against electrostatic charging (ESD protection measures) ESD protective measures (electrostatic discharge) must be taken whenever work is performed on electronic components.
Replacement Instructions seca 684, 685 1 Baseframe Please be sure to observe the sequence listed below when removing/fitting the parts! 1.1 Replacing the NEC2 weight module Detach the plug-in connection (A) of the modular cable. Release the four screw connections (B) on the weight module housing (C) and take off the cover (D).
Replacement Instructions seca 684, 685 1.2 Replacing the load cells To replace the load cells (G, Fig. 3), first detach the frame from the platform. Remove the platform mat to do so. Then undo the four screws (H) that connect the platform with the frame.
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Replacement Instructions seca 684, 685 When assembling the load cells (G, Fig. 3), the tightening torque for the four cheese head screws (J, Fig. 3) of M = 12.5 Nm must be observed. Figure 3: Replacing the load cell 13.02.13/MRE...
Replacement Instructions seca 684, 685 1.3 Setting the overload protection devices To protect the scale from overload, four overload protection devices are provided. Set the specified values for the relevant model in accordance with the table (Table 1); use gauges for this purpose.
Replacement Instructions seca 684, 685 2 Display Please be sure to observe the sequence listed below when removing/fitting the parts! 2.1 Removing the display First remove the three screws (R) from the handrail tube / display connection and carefully pull out the display.
Replacement Instructions seca 684, 685 2.2 Replacing the membrane keypad / NEC 2 display / radio module To replace the membrane keypad (U), NEC2 display (V) or radio module (W) you need to undo the four screw connections (T, Fig. 9) at the bottom of the operating and display unit first.
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