Fincor 2601 Series, Руководство по эксплуатации оборудования

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BOOK 0959
19
SECTION III
OPERATION
POWER ON/OFF
To energize the drive, turn-on the AC supply voltage to the controller. When this occurs, the motor shunt field
energizes with rated field voltage, and potentially hazardous voltage is present at the motor armature terminals.
These
voltages can cause electric shock resulting in personal injury or loss of life.
If the AC supply is interrupted, and the controller is not set up for line starting, the motor will not restart when the
AC supply is restored until the controller is reset by initiating a Stop command and then a Start command. If the
controller is set up for line starting, and the AC supply is interrupted, the motor will restart when the AC supply is
restored, provided the external AC line contactor is pulled in.
RUN
If a RUN-STOP-JOG switch is used, place the switch in RUN position. Otherwise, initiate a Run command. A Run
command will accelerate the motor to the setting of the MOTOR SPEED potentiometer or external speed reference
signal, as applicable. The rate of acceleration is preset by the ACCEL potentiometer on the controller control board.
STOP
If a RUN-STOP-JOG switch is used, place the switch in STOP position. Otherwise, initiate a Stop command. A Stop
command will stop the motor at a rate proportional to the stopping rate of the motor load.
If the controller has dynamic braking, the motor stopping time will be reduced. Dynamic braking provides exponential
rate braking of the motor armature, which occurs when the circuit is opened between the controller and the motor
armature, and one or more resistors connect across the motor armature.
The dynamic braking resistors provide initial braking torque and stops per minute as shown in Table 5.
CONTROLLED STOP
Controlled stop is designed to be used with pushbutton (momentary) control, and should always include an
emergency stop (coast) pushbutton to guarantee removal of the +24V control voltage from the enable input
(TB2:8). When a controlled stop is initiated by momentarily ap24V to TB2:12 input, the drive will
decelerate the motor from set speed to zero speed at the Decel pot setting rate, and then drop out run relay K0 at
zero speed (
≈ 2% or less), determined by armature voltage. Note that if an overhauling load continues to rotate the
motor above ≈ 2% speed, the zero speed detection circuit will not drop out K0.
ZERO SPEED DETECTION
The zero speed detection circuit used for controlled stop is also buffered and brought out to TB2:13 for use as an
active low Zero Speed Output function (
≈ 2% or less). The output is rated at 60V and 50ma @100°C, sufficient
for switching 24Vdc loads (although the drive +24V power supply cannot supply this much current; it must be
customer supplied).