D: Reference Settings; D1: Frequency Reference - YASKAWA GA700 Technical Manual

11.5 d: Reference Settings

11.5 d: Reference Settings
d parameters [References] set the frequency reference input method and dead band range. They also set torque
control, field weakening, and field forcing functions.
WARNING! Sudden Movement Hazard. Always check the operation of any fast stop circuits after they are wired. Fast stop
circuits are required to provide safe and quick shutdown of the drive. Prepare to initiate an emergency stop during the test run.
Operating a drive with untested emergency circuits could result in death or serious injury.
WARNING! Crush Hazard. Do not use this drive in lifting applications without installing external safety circuitry to prevent
accidental dropping of the load. The drive does not possess built-in load drop protection for lifting applications. Install electrical
and/or mechanical safety circuit mechanisms independent of drive circuitry. Failure to comply could result in death or serious
injury from falling loads.
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d1: Frequency Reference

The following block diagram shows the frequency reference input method, command source selection method and
priority descriptions.
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Multi-Step Speed Operation
The drive has a multi-step speed operation function capable of assigning several frequency references in advance.
Assign frequency references to d1-xx. Registered frequency references can be selected by combining with multi-
function input signals from an external source. Select the frequency reference to change the motor speed in stages
by turning ON/OFF the digital input. The user can switch the speed up to the maximum 17-step speed using
the16-step frequency reference and one Jog Frequency Reference (JOG command).
Note:
• Jog Frequency Reference (JOG command) overrides all other frequency references.
• The user can switch the frequency reference using the multi-function digital input even while the motor is running. The acceleration
and deceleration times that are enabled at the time are applied.
• The default setting for Multi-Step Speed Reference 1 (master frequency reference) and Multi-Step Speed Reference 2 (auxiliary
frequency reference) are the analog frequency reference.
Also, voltage command input terminal A1 and current input terminal A2 for Multi-Step Speed Reference 1 (master frequency
reference) are added internally by default. The drive uses Multi-Step Speed Reference 1 even if the signal is connected to either of the
analog input terminals.
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Setting Procedures for Multi-step Speed Operation
When Using an Analog Input as Reference 1 and 2
This section describes the procedures to configure the following examples.
• Multi-Step Speed 6 (6 types of frequency references)
• When setting the voltage input of analog inputs from terminals A1 and A3 to -10 V to +10 V
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Figure 11.56 Frequency Reference Setting Hierarchy
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual