Reliance electric GV3000SE, Instruction Manual

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5 - V/HZ REGULATION MODE
49'1329 e GV3000/SE 5 - 15
Basic Controller Checks
1. Make sure that the controller interlocks installed around the driven machine are operational.
2. Check that the controller's parameter for electronic Motor Thermal Overload Enable (P.040) is set
ON, and Motor Thermal Overload Type (P.041) are set correctly for non-ventilated or forced cooled
motors. Verify the forced cooling air (blower motor rotating direction) is flowing.
WARNING: The user is responsible for ensuring that driven machinery, all drive-train
mechanisms, and process line material are capable of safe operation at the maximum
operating speed of the drive. Overfrequency detection (Limit in H.022) determines when
the drive shuts down on overspeed, and is normally to be set to 15 Hz above Maximum
Speed (P.004). Failure to observe this precaution could result in bodily injury.
3. Check that Maximum Speed (P.004) is set carefully to the application maximum speed but not
above 200Hz and that Overfrequency Limit (H.022) is set normally to 15 Hz above Maximum Speed
(P.004).
4. Verify settings of selected ramp 1 or 2 acceleration and deceleration times in seconds from / to zero
to maximum speed (ramp 1: P.001 / P.002, ramp 2: P.017 / P.018).
- Too short acceleration time may cause the drive to operate in current limit and actual time to
accelerate from zero to maximum speed will be greater then set time.
- Too short deceleration time may cause the intermediate circuit voltage to reach its limit and
therefore the regulator to suspend deceleration as long as DC Bus voltage is too high. Actual
deceleration time from maximum speed to zero will be greater then set time.
5. Check the direction of rotation of the motor at preselected FORWARD/REVERSE direction and
reference polarity.
NOTE : Forward means clockwise rotation viewing motor drive end, with following conditions:
Phases U,V,W at inverter output in phase with U,V,W of an European type of motor.
For changing rotation direction on V/Hz mode drive:
Turn OFF, lockout or tag input power of the controller.
:
ATTENTION: DC bus capacitors retain hazardous voltages after input power has been
disconnected. Verify with a voltmeter that the DC bus voltage has dropped below
DC 50 V (approx. 60 sec) before touching any internal components. For DC-bus
voltage check and test points refer to Power Units manual 491327, Section 4.
Failure to observe this precaution could result in bodily injury or loss of life.
The direction of rotation can be altered by switching over any two motor leads.
6. Press the START key. The motor should ramp to the pre-set speed at set acceleration rate.
7. While the controller is in RUN mode (the RUNNING LED is lit), check the display data VOLTS,
AMPS, and Hz and verify that they are reading correctly.
Note: VOLTS display can show lower values under no-load (see H.000).
8. For (LOCAL and AUTO) or REMOTE modes: If using a remote speed reference, check - using the
local DISPLAY mode - for correct speed reference (Jumper J4: +/-10VDC, or 0-20mA, or 4-20mA).
Take in account any values set in P.009 (Offset), P.010 (Gain) and P.011 (Inversion) that have
scaled the Analog Signal to Speed Reference.
9. Make sure the correct V/Hz curve (H.018) has been selected for the application.
10. Input Power/Snubber Configuration (H.017) has to be set to 1 or 5, if the Dynamic Braking Unit
option has been installed.