OCTOBER 2020 2
PRECAUTIONS Prior to installation, use or maintenance activities, carefully read this user manual and follow the provided guidelines. Prior to the first use, carefully read this user manual. Use the weighing device only as intended. Place weighed loads in the centre of the weighing pan. Load the weighing pan with loads of gross weight which does not exceed the maximum capacity. Mind not to leave heavy loads on the weighing pan for longer periods of time.
CONTENTS 1. INTENDED USE ................................................................................................................................................. 5 2. WARRANTY CONDITIONS ............................................................................................................................... 5 3. MAINTENANCE ACTIVITIES ............................................................................................................................ 6 3.1. Cleaning ABS Components.....
1. INTENDED USE WLC/A precision scales enable fast and accurate mass measurements under laboratory and industrial conditions. The devices are equipped with an internal battery which allows their operation in places where there is no access to the mains. The WLC series features a stainless steel weighing pan, and a backlit LCD guaranteeing clear weighing result presentation.
C. RADWAG does not bear any responsibility for damage or losses resulting from unauthorized or inadequate performing of production or service processes. D. The warranty does not cover: mechanical damage caused by product exploitation other than intended, damage of thermal and chemical origin, damage caused by lightning, overvoltage in the power network or other random event, inappropriate cleaning habits. E.
3.2. Cleaning Glass Components Select dissolvent depending on a dirt. Never soak the glass panes in alkaline solutions since they interact with glass and may cause damage. Do not use cleansers containing abrasive substances. For organic dirt use acetone first, next use water or detergent. For other than organic dirt use diluted acid solutions (soluble salts of hydrochloric or nitric acid) or base solutions (ammonium or sodium base).
Avoid using cleanser without water since it may result with damage of the cleaned surface, please mind that large amount of water mixed with cleanser is a must. 3.5. Cleaning Aluminium Components While cleaning aluminium components use products acid by nature, e.g. spirit vinegar, lemon. Do not use cleansers containing abrasive substances. Avoid using hard brush, this may cause scratches. It is recommended to use microfibre cloth. While polishing the surface use circular movements.
6. MECHANICAL DESIGN 6.1.
6.2. Connectors Arrangement Connectors view 12345- power supply socket 12 VDC RS232 (1) connector RS232 (2) connector USB A "host" USB B "device" 6.3. RS232 Connectors RS232 (1) connector DB9/M (male) Pin2 – RxD Pin3 – TxD Pin4 – 5 VDC Pin5 – GND RS232 (2) connector DSUB15/F (female) Pin8 - TxD2 Pin9 - 5 VDC Pin10 - GNDRS Pin13 - RxD2 6.4. Inputs / Outputs Standard C32 scale is equipped with 4 optoisolated inputs and 4 semiconductor outputs (solid-state relays).
IN/OUT connector DSUB15/F (female) Pin1 – GNDWE Pin2 - OUT1 Pin3 - OUT2 Pin4 – COMM Pin6 - IN4 Pin7 - IN3 Pin11 - IN2 Pin12 - IN1 Pin14 - OUT4 Pin15 - OUT3 6.4.1. Technical Specifications Output parameters Output quantity 4 Output type Solid-state relay Cable cross-section 0.14 - 0.5 mm Maximum output current 0.5 A DC Maximum output voltage 30 VDC 2 Input parameters Input quantity 4 Input type Optoisolated Cable cross-section 0.14 - 0.5 mm Input voltage range 524VDC 2 6.4.2.
6.5. Operation panel Operation panel of WLC A1, WLC/A2 precision scale Operation panel of WLC/A1/C/2, WLC/A2/C/2 precision scales Keys: Press to switch the weighing device on/off – hold the key for about 1 second. Function key, press to change the working mode. Press to send the weighing result to a printer or computer. Press to zero the scale. Press to tare the scale.
Press to perform internal adjustment manually (Applies exclusively to WLC/A1/C/2, WLC/A2/C/2 balances). Upon pressing + keys combination, functions of given keys change. Detailed information concerning use of + keys combination is to be found further down this manual. 7. INSTALLATION 7.1. Unpacking and Installation Unpack the device and place it on a flat and even surface. Keep it far away from any sources of heat.
Preparing the scale for the under-pan weighing: 1. Unpack the scale, assembly it following section 7.1 of this user manual. - 2. Put the scale right side down. 3. Remove the hole plug. 4. Mount the hook and put the scale bottom side down. 7.3. Levelling To level the weighing instrument turn its feet.
7.4. Connecting the Scale to the Mains The weighing device can be connected to the mains only with a power supply that comes standard with the particular model. Nominal voltage of the power supply (specified on the power supply data plate) has to be compatible with the mains nominal voltage. Procedure: Connect the power supply to the mains. Plug it to the power supply socket (back side of the scale housing). Press key. The key is also used to switch the scale on/off.
pictogram display mode Meaning No pictogram Battery charged. Regular scale operation. Pictogram displayed continuously Too low battery charge (the scale is about to shut down). Charge the battery immediately. Blinking pictogram, blink frequency: ca. 1 s Battery charge in progress. The device is connected to the power supply charging the battery. Blinking pictogram, blink frequency: ca. 0.5 s Battery error. Battery is damaged. 7.7. Battery Charge Status Check Press and keys combination.
Press to confirm modification. Press to exit, function remains unmodified. Press to move one menu level up. 8.1. Return to the Weighing Mode Introduced menu modifications are automatically saved to scale memory upon return to the home screen. To return to the home screen press repeatedly. key 9. WEIGHING Load the weighing pan. Read the result when stability marker is displayed.
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11. TECHNICAL SPECIFICATIONS For technical specifications of respective scales go to RADWAG website www.radwag.pl. 12. TROUBLESHOOTING Problem Scale start-up fail. Cause Solution Power supply disconnected. Connect the power supply to the scale. Battery discharged. Connect the power supply to the mains, charge the battery. No battery (not installed or Check if the battery is installed correctly installed incorrectly). (polarization). <7.4.
13. ERROR MESSAGES -Err2- Value beyond zero range. -Err3- Value beyond tare range. -Err4- Adjustment weight or start mass out of range (1% for adjustment weight, 10 for start mass). -Err5- Battery error. Battery is damaged. -Err8- Time of the following operations exceeded: taring, zeroing, start mass determining, adjustment process. -null- Zero value from converter. -FULL- Weighing range exceeded. -LH- Start mass error, indication out of range (10% of start mass).
