Emotron FDU Series, Instruction Manual, Page: 66 / 260

62 Applications CG Drives & Automation 01-7491-01r0
6.1.3 Compressors
6.1.4 Blowers
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Compressor is damaged when cooling media
enters the compressor screw. Overload situation is quickly detected and safety
stop can be activated to avoid breakdown.
411–41A
Pressure is higher than needed, causing leaks,
stress on the equipment and excessive air use.
Load Curve Protection function detects
deviation. Warning is sent or safety stop
activated.
411–419, 41C1–41C9
Motor runs at same speed when no air is
compressed. Energy is lost and equipment
stressed.
PID continuously adapts to the level required.
Sleep function activated when none is needed.
320, 380, 342, 354
Process inefficiency and energy wasted due to
e.g. the compressor idling. Load Curve Protection quickly detects deviation.
Warning is sent or safety stop activated.
411–419, 41C1–41C9
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Difficult to compensate for pressure fluctuations.
Wasted energy and risk of production stop. PID function continuously adapts pressure to the
level required.
320, 380
Motor runs at same speed despite varying
demands. Energy is lost and equipment stressed.
PID continuously adapts air flow to level
required. Sleep function activated when none is
needed.
320, 380, 342, 354
Process inefficiency due to e.g. a broken damper,
a valve not fully opened or a worn belt. Load Curve Protection quickly detects deviation.
Warning is sent or safety stop activated.
411–419, 41C1–41C9