5.7 H: Terminal Functions
238 YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
Setting B: Drive overheat alarm (oH2)
Triggers an oH2 alarm when the contact closes. Because this is an alarm, drive operation is not affected.
Setting C: Analog terminal input selection (terminal A1, A2, A3)
When closed, the terminals specified in H3-14 are enabled. When open, the drive disregards the input signal to the analog
terminals.
Setting D: PG encoder disable
When closed the drive disregards PG feedback from the motor when using V/f Control with PG. When the terminal is
opened again, the drive resumes using PG feedback to control motor speed.
Setting E: ASR integral reset
Switches between PI control or simply P control by resetting the integral value. As long as the terminal is closed, integral
operation is disabled and the drive uses P control. When the terminal opens, PI control resumes.
Setting F: Through mode
Select this setting when the terminal is not used or when using the terminal in the pass-through mode. When set to F, an
input does not trigger any function in the drive. Setting F, however, still allows the input status to be read out by a PLC
via a communication option or MEMOBUS/Modbus communications.
Setting 10, 11: Up, Down command
Using the Up/Down function allows the frequency reference to be set by two push buttons. One digital input must be
programmed as the Up input (H1- = 10) to increase the frequency reference, and
the other one must be programmed
as the Down input (H1- = 11) to decrease the frequency reference.
The Up/Down function has priority over the frequency references from the digit
al operator, the analog inputs, and the
pulse input (b1-01 = 0, 1, 4). If the Up/Down function is used, then references provided by these sources will be
disregarded.
The inputs operate as shown in Table 5.36.
Table 5.36 Up, Down command
Note: 1. An oPE03 alarm will occur when only one of the functions Up/Down is programmed for a digital input.
2. An oPE03 alarm will occur if the Up/Down function is assigned to the terminals while another input is programmed for the Accel/
decel ramp hold function. For more information on alarms, Refer to oPE Codes, Causes, and Possible Solutions
on page 357.
3. The Up/Down function can only be used for parameter b1-01. Consider this when using parameter b1-15 switching command
(H1- = 2).
Using the Up/Down Function with Frequency Reference Hold (d4-01)
• When the frequency reference hold function is disabled
(d4-01 = 0), the Up/Down frequency reference will be reset to
0 when the Run command is cleared or the power is cycled.
• When d4-01 = 1, the drive will save the frequency reference set by the Up/Down functi
on. When the Run command or
the power is cycled, the drive will restart with the reference value that was saved. The value that was saved can be reset
by closing either the Up or Down input without having a Run command active. Refer to d4-01: Frequency Reference
Hold Function Selection on page 201.
Using the Up/Down Function with Frequency Reference Limits
The upper frequency reference limit is determined by parameter d2-01.
The value for the lower frequency reference li
mit depends on the setting of parameter d4-10, and can be set by an analog
input or parameter d2-02. Refer to d4-10: Up/Down Frequency Reference Limit Selection on page 205 for details.
When a Run command is applied, the
lower limits work as follows:
Status
Drive Operation
Up (10) Down (11)
Open Open Hold current frequency reference
Closed Open Increase frequency reference
Open Closed Decrease frequency reference
Closed Closed Hold current frequency reference
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