YASKAWA T1000A Technical Manual page 184

5.7 H: Terminal Functions
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 using the terminal in a 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-
as the Down input (H1-
The Up/Down function has priority over the frequency references from the digital 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 the table below.
Status
Up (10)
Open
Closed
Open
Closed
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,
3. The Up/Down function can only be used for External reference 1. Consider this when using Up/Down and the external reference
switching command (H1-
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 limit depends on the setting of parameter d4-10, and can be set by an analog
input or parameter d2-02. When a Run command is applied, the lower limits work as follows:
• If the lower limit is set by d2-02 only, the drive will accelerate to this limit as soon as a Run command is entered.
• If the lower limit is determined by an analog input only, the drive will accelerate to the limit as long as the Run
command and an Up or Down command are active. It will not start running if only the Run command is on.
• If the lower limit is set by both an analog input and d2-02, and the analog limit is higher than the d2-02 value, then the
drive will accelerate to the d2-02 value when a Run command is input. Once the d2-02 value is reached, it will
continue acceleration to the analog limit only if an Up or Down command is set.
Figure 5.49 shows an Up/Down function example with a lower frequency reference limit set by d2-02, and the frequency
reference hold function both enabled and disabled.
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= 10) to increase the frequency reference, and the other one must be programmed
= 11) to decrease the frequency reference.
Down (11)
Open
Open
Closed
Closed
= 2).
Drive Operation
Hold current frequency reference
Increase frequency reference
Decrease frequency reference
Hold current frequency reference
Refer to Multi-Function Input Selection Error on page
YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
295.