Koso REXA Electraulic Xpac, Installation And Operation Manual

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Xpac
Installation Manual -- Version 5.1 (5/08)
46
REXA
Electraulic Actuators & Drives
The Fail Safe feature can be turned of ([CtL:FS] = OFF). In such
instances, E-CS has no meaning and will not occur.
8.4 Bumpless Transfer, E-bt
Please review Section 6.3.3 for complete details.
8.5 Driver Fault, E-dF
The motor drivers for the C and D size power modules have an output
signal and red LED to indicate a fault. The PCP monitors the driver
fault signal and will issue a reset command to the driver. If this fails
to clear the fault, the alarm will change state and the display will
alternate between E-dF and actual position.
DUAL POWER MODULE UNITS (2C OR 2D)
Failure of a single drive does not shut down the actuator. The display
will indicate a driver fault, E-dF, and the alarm will change state, but
the unit will continue to operate on one power module. The stroking
speed is reduced by half.
Potential reasons for the error include: motor lead short, internal
driver power fault, low incoming voltage, no power.
8.6 Incorrect Direction, E-dr
If the actuator moves in the direction opposite to the PCP command,
an incorrect direction error, E-dr, will be indicated. Motion of the
unit will cease, the alarm relay will trip and the display will alternate
between E-dr and actual position.
Potential reasons for the error include: loose wiring, motor driver.
8.7 Triple Power Supply, E-PS
The PCP and feedback operate from a triple power supply (+5 Vdc,
+15 Vdc, -15 Vdc) located on the motherboard. As long as the +5
Vdc is active, the PCP is able to monitor the +15 Vdc and -15 Vdc
outputs. A reduction of 1.5 Vdc in either output will stop motion of
the unit, trip the alarm relay and E-PS will appear on the display.
Potential reasons for the error include: loose wiring, triple power
supply.
E-dF will only clear when the driver
fault signal is removed.
E-bt will automatically clear when the
control signal and actuator position
are within 5%.
E-dr will clear by cycling electric
power, pressing the PCP reset button
(located in the upper left corner) or
entering the LOCAL or SETUP modes.
E-PS will only clear when the power
supply returns to normal range.