Application Settings; No-Load Operation; Loaded Operation - YASKAWA Varispeed E7 Instruction Manual And Parameter Description

Application Settings

User constants can be set as required in advanced programming mode (i.e. the ADV indicator lights on the
Digital Operator). All the constants that can be set in quick programming mode can also be displayed and set
in advanced programming mode.
Setting Examples
The following are examples of settings for applications.
To prevent the machine from being operated in reverse, set b1-04 to 1 to disable reverse operation or to 3
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for output phase rotation and reverse disabled.
To increase the speed of a 50 Hz motor by 10%, set E1-04 to 55.0 Hz.
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To use a 0 to 10 V analog signal for a 50 Hz motor for variable-speed operation between 0 and 45 Hz (0%
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to 90% speed deduction), set H3-02 to 90.0%.
To limit the speed range between 20% and 80% set d2-01 to 80.0% and set d2-02 to 20.0%.
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No-load Operation

This section describes trial operation in which the motor is in no-load state, that means the machine is not con-
nected to the motor. To avoid failures caused due to the wiring of the control circuit it's recommended to use
the LOCAL mode. Press the LOCAL/REMOTE key on the Digital Operator to change to LOCAL mode (the
SEQ and REF indicators on the Digital Operator should be OFF).
Always confirm safety around the motor and machine before starting Inverter operation from the Digital
Operator. Confirm that the motor works normally and that no errors are displayed at the Inverter. For applica-
tions, at which the machine can be driven in one direction only, check the motor rotation direction.
Operation with Jog frequency reference (d1-17, default: 6.00 Hz) can be started and stopped by pressing and
releasing the JOG key on the Digital Operator. If the external control circuit prevents operation from the Dig-
ital Operator, confirm that emergency stop circuits and machine safety mechanisms are functioning, and then
start operation in REMOTE mode (i.e., with a signal from the control signal terminal).
Both, a RUN command (forward or reverse) and a frequency reference (or multi-step speed command) must
be provided to start Inverter operation.

Loaded Operation

Connecting the Load
After confirming that the motor has stopped completely, connect the mechanical system.
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Be sure to tighten all the screws when connecting the motor shaft to the mechanical system.
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* Setting 3 for b1-04 will be available in future software versions. For details please contact your Yaskawa representative.
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Trial Operation
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