Xylem Aquavar, Instruction Manual

Page: 80 / 172

Motor check In [1–80] Function at Stop, Motor Check was selected. A
stop command is active. To ensure that a motor is
connected to the controller, a permanent test current is
applied to the motor.
OVC control Overvoltage control was activated in [2–17] Over-voltage
Control, [2] Enabled . The connected motor is supplying
the controller with generative energy. The overvoltage
control adjusts the V/Hz ratio to run the motor in
controlled mode and to prevent the controller from
tripping.
PowerUnit Off (For controllers with an external 24 V power supply
installed only.) Mains supply to the controller is removed,
but the control card is supplied by the external 24 V.
Protection md Protection mode is active. The unit has detected a critical
status (an overcurrent or overvoltage).
• To avoid tripping, switching frequency is reduced to
4 kHz.
• If possible, protection mode ends after
approximately 10 s
• Protection mode can be restricted in [14–26] Trip
Delay at Inverter Fault
QStop The motor is decelerating using [3–81] Quick Stop Ramp
Time.
• Quick stop inverse was chosen as a function for a
digital input (parameter group [5–1]* Digital Inputs).
The corresponding terminal is not active.
• The quick stop function was activated via serial
communication.
Ramping The motor is accelerating/decelerating using the active
Ramp Up/Down. The reference, a limit value or a
standstill is not yet reached.
Ref. high The sum of all active references is above the reference
limit set in [4–55] Warning Reference High.
Ref. low The sum of all active references is below the reference
limit set in [4–54] Warning Reference Low.
Run on ref. The controller is running in the reference range. The
feedback value matches the setpoint value.
Run request A start commend has been given, but the motor is
stopped until a run permissive signal is received via
digital input.
Running The motor is driven by the controller.
Sleep mode The energy saving function is enabled. This means that at
present the motor has stopped, but that it will restart
automatically when required.
Speed high Motor speed is above the value set in [4–53] Warning
Speed High.
Speed low Motor speed below the value set in [4–52] Warning
Speed Low.
Standby In Auto On mode, the controller will start the motor with
a start signal from a digital input or serial
communication.
Start delay In [1–71] Start Delay, a delay starting time was set. A start
command is activated and the motor will start after the
start delay time expires.
5 Electrical Installation
78 Aquavar ® Intelligent Pump Controller - 150 HP to 600 HP INSTRUCTION MANUAL