Explosion-protection safety precautions
12
EBS852, EBS862 (Contrac) 42/68-831-EN
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2 Explosion-protection safety precautions
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2.1
Operation via frequency transformer
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• The frequency converter (electronic unit) may not installed or used within the hazardous
area.
• Check whether the electronic unit is loaded with the parameters of the actuator it is
connected to.
• Check the electronic unit for proper connection to the correct actuator.
• Setpoint monitoring is activated as default setting when the electronic unit leaves the
manufacturer. Do not de-activate this setting.
• Rapid traverse mode is not allowed on Ex actuators, and the feature cannot be activated
from the user interface.
• The Contrac power electronic unit must be upstream from the motor temperature monitoring
unit SD241-B or similar, certified tripping unit.
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2.2
Using the engineering software Save & Restore and ECOM688
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Reinstalling the electronic unit software or individual data sections with the engineering software
Save & Restore or ECOM688 may only be performed in compliance with the relevant basic
conditions. It must be ensured, specifically, that the data record imported belongs to the
actuator type. After importing a data record, always check that all parameters for the application
such as speed and torque/force are configured accordingly.
Downdating the actuator operating system (UAPM software version) is not permitted.
Refer to the valid operating instructions for the engineering software ECOM688. The operating
instructions are available for download on the internet.
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