EX-Safety Information
Explosion-safe area
1. Mains Connection
Explosion-risk area Zone 2 or Zone 22
Gas: Group IIC, temperature class T4
Dust: Group IIIC, Tmax 80°C
Ambient temperature: -10°C … +40°C …
Connector from equipment supplied
Use an explosion-protected connector
EX
Protect connector from equipment supplied from being disconnected. Make sure the emergency stop works.
Note 8)
Connection alternatives
Note 16)
Indicator CAIS.
or complete scale
CAW...-......-......
each with option Y2
Equipotential bonding conductor
2. Data Transfer
PC,
Printer,
PLC, etc.
These devices may also be installed in Zone 2 or Zone 22 if they are suitable for
Category 3 as per the ATEX
Directive.
For data transfer only and, if required, supply for the connected device (e.g. printer), there is no supply voltage going from the connected device to the indicator / complete scale
Note 8)
Equipotential bonding conductor
Indicator CAIS.
or complete scale
CAW...-......-......
each with option Y2
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Drawing No.
Safety Information
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65954-750-16
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EX-Safety Information
Explosion-safe area
Explosion-risk area Zone 2 or Zone 22
Gas: Group IIC, temperature class T4
Dust: Group IIIC, Tmax 80°C
Ambient temperature: -10°C … +40°C
3. Connecting Weighing Platforms
Note 8)
Indicator
CAIS. with option Y2
Data output with nominal supply voltage
16 VDC
ADU output with bridge supply voltage
9 VDC (±4.5 VDC)
Note 8)
Analog weighing
platforms from series
CAAP..-......-...... +
Option Y2
or other weighing platforms suitable for Zone 2 or 22 (category 3G or 3D) that can be supplied via a bridge supply voltage of at least
9 VDC (±4.5 VDC).
Note 8)
Digital weighing
platforms that are suitable for Zone 2 or 22
(category 3G or 3D) and can be supplied by at least 16 VDC via the data output.
Equipotential bonding conductor
4. Connecting External Devices
Note 8)
External device with bridge supply voltage
12 VDC (±6.0 VDC)
Note 8)
External device with bridge supply voltage
12 VDC (±6.0 VDC)
Device must be suitable for Zone
2 and/or 22!
Connection alternatives
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Note 8)
Analog weighing platforms (load cells) of series
CAAP..-......-...... + Option Y2
Equipotential bonding conductor
Designation
Drawing No.
Safety Information
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EX-Safety Information
These safety instructions apply to installation, use, maintenance and repair
1.
The device (CAIS. indicator, CAAP weighing platform..-……-……, CAW complete scale…-……-…...) is suitable for use in potentially explosive atmospheres of Zone 2 (Group IIC, temperature class T4 or T6 for weighing platforms) and
Zone 22 (Group IIIC; surface temperature 80°C) according to EU Directive 94/9/EC and applicable harmonized European standards. This does not guarantee compliance with other properties and requirements.
2.
The device may only be used indoors.
3.
Do not use it as a portable instrument.
4.
Installation, operation, maintenance and repairs should only be performed by an authorized specialist, in accordance with applicable laws, rules and regulations, ordinances and standards.
Particular attention should be paid to Standard EN 60079-14 within the scope of validity of EU
Directive 94/9/EC for the installation. Installation, maintenance, cleaning and repair work may only take place with all power disconnected from the device and any connected peripheral devices.
5.
It is essential that recommendations on the installation, operation, maintenance and repair contained in the operating instructions supplied are complied with for all equipment (including connected devices). The temperature ranges of connected devices must also be taken into account.
6.
The device should only be used in a temperature range of -10°C … +40°C, do not expose it to unacceptable sources of heat or cold, direct sunlight, UV radiation, shocks or vibrations, and the installation should ensure that heat can be properly dissipated and external heat sources are kept at a sufficient distance.
7.
Tighten the cable entry glands using a torque of 5 Nm. The cable gland for the power cord should be tightened with a torque of only 3 Nm. Install the external connecting cables firmly to avoid damage and strain. The cable connections inside the explosion-risk area must be secured against loosening.
8.
All metal parts must be electrically connected to the same equipotential bonding conductor (PA) so that any electrostatic charges can be conducted away from the equipment. For this purpose, the equipment operator is obligated to connect a lead with a gauge of at least 4 mm² (cross section) to the equipotential bonding terminal (indicated by the ground symbol) located on the housing. A suitable ring terminal must be attached to the end of the cable. The cable must be laid so that the ground connector cannot come loose. The connection to the equipotential bonding conductor should be checked to see if it is of low resistance at the time of installation and at regular intervals. The indicator and weighing platform must each be connected individually to the equipotential bonding conductor if no metal connection (e.g. support arm) is used between them.
Do not use the shield of the connection cable for the equipotential bonding conductor.
9.
Before opening devices, switch off the supply voltage, or make sure that the area is not potentially explosive. Do not connect or disconnect any live cables inside an explosion-risk area.
10. When closing, make sure the cover screws are tightly secured.
11. The device should only be operated for the first time when it is certain that the area is not potentially explosive.
12. Data lines to connected devices and the connection cable to the weighing platform should be secured against accidental disconnection and may only be connected and disconnected when the power supply is turned off. Block unused outlets to guarantee the IP 65 level of protection.
Keep any transitory voltage phenomenon away from the device.
13. Data cables are for data transfer only and may not supply any power from the connected device to the indicator / complete scale. However, one digital weighing platform suitable for use in Zone
2 or 22 connected to the data output can be supplied via direct voltage if it can be supplied by direct voltage of at least 16 VDC via the data output.
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Drawing No.
Safety Information
65954-750-16
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EX-Safety Information
14. During installation, take suitable steps to prevent stray electrical interference (e.g. due to magnetic fields). Keep any voltage transients away from the device.
15. The indicator (indicator of the complete scale) should be installed so that there is only a low risk of mechanical danger to the IP protection. The IP protection rating of the device is IP6x according to EN 60529 / IEC 60529. The device is designed for clean environments and must be handled carefully according to the IP protection rating.
16. The power connection must be made in accordance with the regulations applicable in the country of operation. A correct power connection must be ensured. The power supply cable should be protected against damage and properly connected to the power supply ( 100 - 240 VAC, ± 10%,
50-60Hz) or 24 VDC (± 10%) for Option L8. The indicator and/or complete scale is approved for circuits up to 1500 A. Only use the power supply connection cable in the hazardous area with a suitable and approved explosion-protected plug. Alternatively: Protect connector from being disconnected or attach the power supply connection cable directly. Be sure to provide a suitable emergency shut-off switch.
17. Avoid generating static electricity. Only use a damp cloth to clean the device. This is especially true when using a dust cover. The equipment operator assumes responsibility for preventing any risks caused by electrostatic charging.
18. If cables are connected subsequently, make sure that the connections are not corroded. The grounding conductor of a mains connection cable must have the same cross section as the current-carrying wires (N and L).
19. All external cables (even cables between load cells / weigh cells and connection box / junction box) are only suitable for fixed placement and must be laid fixed. Otherwise, use screwed connections designed according to EN60079-0 and rounded at an angle of 75º (minimum) and a radius at least equal to one-quarter of the diameter of the cables, but without exceeding 3 mm.
20. Cables from third-party manufacturers (subject to the user’s responsibility) must be tested for suitability according to Appendix A EN 60079-0. Pay attention to the pin assignment. Pay attention to the wiring diagram. Remove unneeded connections.
21. Unused openings must be sealed using suitable cover caps (dummy plugs) to ensure their IP protection rating. Do not remove while it is carrying current.
22. When using external devices in Zone 2 hazardous areas, pay attention to the gas group and temperature class. The outputs must include the Ex nA electrical circuits. Pay attention to the maximum surface temperature and group for Zone 22.
23. Chemicals that can attack housing gaskets and cable sheathings must be kept away from the device. These include oil, grease, benzine, acetone, and ozone. If you are uncertain, contact the manufacturer.
24. The installation must be inspected for correct function and safety by a trained and qualified person at appropriate intervals.
25. If the installation does not operate properly, disconnect it from the supply voltage immediately and secure it against further use.
26. In the event of repair, use only original spare parts supplied by the manufacturer.
27. Any modifications to the instrument (except by persons authorized by Sartorius) cause loss of conformity for use in Zone 2 and Zone 22 explosion-risk areas and invalidate all guarantee claims. Similarly, the device may only be opened by qualified and authorized personnel.
28. Modifications (also those by Sartorius personnel) are subject to written approval.
29. These instructions are given in addition to those in the instruction manuals and do not release the operator from his responsibilities for the installation, operation and inspection of the equipment in compliance with any applicable regulations in the country of use.
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Designation
Drawing No.
Safety Information
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