YORK, A Johnson Controls Company
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The AYK550 does not include a disconnect device. A means to disconnect input
power must be installed between the AC power source and the AYK550. This branch
circuit protection must:
•
Be sized to conform to applicable safety regulations, including, but not limited to,
both National and local electrical codes.
•
Be locked in the open position during installation and maintenance work.
The disconnect device must not be used to control the motor. Instead use the control
panel, or commands to the I/O terminals for motor control. Cycling the disconnect
device cycles power to the drive’s DC capacitors. These capacitors have a maximum
limit of 5 cycles in ten minutes.
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The following tables provide fuse recommendations for short circuit protection on the
drive’s input power. These recommendations are not requirements if branch circuit
protection is otherwise provided per NEC. UL508A manufacturers are not required to
use the recommended fuses for the purpose of UL listing a panel that includes the
AYK550.
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208/220/230/240 VAC 3-phase (or 1-phase)
+10% -15% for
230 VAC units.
400/415/440/460/480 VAC 3-phase
+10% -15% for 400 VAC units.
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Maximum allowed prospective short-circuit current in the supply is 100 kA
in a second providing that the drive’s input power is protected with
appropriate fuses. US: 100,000 AIC.
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Base drive only or drive with fused DBC.
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48…63 Hz
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Max.
± 3% of nominal phase to phase input voltage
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0.98 (at nominal load)
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90 °C (194 °F) rating minimum.
Содержание York AYK550
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