Motor Rated Current Setting; Option Communication Selection; Gain And Bias Adjustment; Option Communication Error Selection - YASKAWA E7 Drive User Manual

Motor Rated Current Setting

E2-01 Motor Rated Current
The Motor Rated Current parameter (E2-01) is necessary information used by the Drive to help protect the motor. The motor
protection parameter is L1-01 and must be enabled. Set E2-01 to the full load amps (FLA) stamped on the motor's nameplate.
During Auto-tuning, the motor rated current (T1-04) must be entered in the Auto-tuning menu. If the Auto-tuning operation com-
pletes successfully, the value entered into T1-04 will also be written into E2-01.

Option Communication Error Selection

F6-01 Operation Selection After Communication Error
If a serial communication option board is attached to the Drive at the 2CN connector, the Drive will automatically monitor the
card for any type of communication error. This monitoring is performed whether or not a run command or speed command is
coming via the option board.
The setting of F6-01 determines whether the communication error is seen as a fault or an alarm. If F6-01=3, then the fault output
is not energized when a communication error occurs. All other settings of F6-01 causes the fault output to energize.
The setting of F6-01 has no effect on the communication errors seen at the RS-485/422 terminals on the removable terminal
block.
Gain and Bias Adjustments
H3-02 Terminal A1 Gain Setting
H3-03 Terminal A1 Bias Setting
In order to have the Drive correctly interpret an analog input, it may be necessary to apply a gain and/or a bias to the signal.
H3-02 should be set such that if 10Vdc is read on the A1 input the speed command is the setting of H3-02. For example,
5Vdc=100% speed command is desired, then H3-02 should be set to 200%. a simple ratio can be used to determine the value of
H3-02 that corresponds to the desired speed command:
H3-02 100%
=
10Vdc 5Vdc
H3-02 = 10Vdc
H3-02 = 200%
H3-03 should be set such that, if 0Vdc is read on the A1 input, the speed command is the setting of H3-03. Setting a bias is useful
to compensate for drift. If 0Vdc does not produce 0 RPM, then H3-03 is used to offset the drift. If the drift is positive, set H3-03
less than zero. However, if the drift is negative, set H3-03 greater than zero.
x 100%
5Vdc
Basic Programming 5 - 16