FANUC Power Mate i-MODEL H CONNECTION MANUAL (HARDWARE)

5. POWER SUPPLY UNIT CONNECTION
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Apply the following poweroff sequence. Alternatively, turn off the
power to all the units simultaneously.
1 Power to the FANUC I/O Link master (such as a CNC) <24
VDC or 200 VAC>
Power to the Power Mate i <24 VDC>
Power to the FANUC I/O Link slaves (such as an I/O card)
of the Power Mate i <24 VDC>
2 Power to the separate detector interface unit <24 VDC>
Power to the FSSB I/O module <24 VDC>
Power to the servo amplifier <200 VAC>
3 Power to the entire machine <200 VAC>
Simultaneously, as used here, refers to the following: The units
described in items 2 and 3 may be turned off within 500 ms before the
units described in item 1 are turned off.
OFF
OFF
ON
ON
Power to the units described
in item 1
<24 VDC or 200 VAC>
Power to the units described
in items 2 and 3
<24 VDC, 200 VAC>
500 ms or less
NOTE
1 The units described in item 1 are connected to a FANUC I/O
Link. If some of the units connected to a FANUC I/O Link
are turned off first, the Power Mate i generates system
alarm 930 or 973.
2 When the power to the servo amplifier is turned off more
than 500 ms before the Power Mate i is turned off, the
operation of turning off the servo amplifier is recorded in the
alarm history of the Power Mate i.
The poweron sequence of a setting and display unit supporting the
display link is undefined in the poweron sequence of the Power Mate i
control unit.
When the power is turned off or when the power is momentarily
disconnected, motor control is disabled. Problems that may be generated
from the motor control disabled state should be handled from the
machine, as necessary.
For example, when movement along a vertical axis is controlled, a brake
should be applied to prevent falling. Usually, the brake clamps the motor
when the servo is not activated or when the motor is not turning. The
clamp is released only when the motor is turning. When servo axis control
is disabled by poweroff or momentary power disconnection, the brake
usually clamps the servo motor. In this case, before the relay for clamping
operates, the controlled axis may fall. So, also consider whether the
distance the axis is likely to fall will cause a problem.
5.4
POWEROFF
SEQUENCE

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