5.7 H: Terminal Functions
188 YASKAWA ELECTRIC SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
Note: 1. This function cannot be used simultaneously with settings 42 and 43.
2. The same functions are assigned to terminals S1 and S2 when the drive is initialized for 2-wire sequence.
Figure 5.53
Figure 5.53 Example Wiring Diagram for 2-Wire Sequence
Setting 42, 43: Run and direction command for 2-wire sequence 2
Sets the drive for 2-wire sequence 2.
When an input terminal programmed for 42 is closed, the drive will operate in the direction selected. When the input
opens, the drive will stop. The input programmed for 43 selects the direction. If it is open, forward direction is selected.
If it is closed, reverse direction is selected.
Note: This function cannot be used simultaneously with settings 40 and 41.
Setting 44, 45, 46: Offset frequency 1, 2, 3
These inputs can be used to add offset frequencies d7-01, d7-02, and d7-03 to the frequency reference. Refer to d7-01 to
d7-03: Offset Frequency 1 to 3 on page 163 for details.
Setting 50: Disturb Function Cancel
When enabled, a terminal set to "50" cancels the Disturb function. The Disturb waveform is generated as long as the
terminal remains open. For more information, refer to S1: Disturb Function on page 250 .
Setting 51: Synchronous Accel/Decel
If this input is enabled the drive uses the accel/decel time setting as the time to accel/decel to the set frequency reference
(not maximum frequency). In this way, motors in a line system can be accelerated or decelerated synchronously.
Setting 53: Energy Saving On/Off
This terminal can enable and disable the Energy Saving feature in the drive, regardless of what parameter b8-01 is set to.
For description of Energy Saving, see b8: Energy Saving on page 137.
Setting 59: DC Injection Braking 1
When this function is activated, the drive performs DC Injection Braking for as long as the input terminal is closed. The
drive uses the DC Injection Braking current level set in parameter b2-02. A Run command is not required to activate this
function. If the DC Injection 1 command is entered during run, the drive will perform DC Injection Braking.
Note: If b2-01 is set to a smaller value than parameter E1-09 (minimum frequency), then DC Injection Braking will begin as soon as
the frequency falls to the value set to E1-09.
Setting 60: DC Injection Braking 2
This function can be used to warm up the motor before starting it, and to keep the motor warm when stopped. The DC
Injection 2 command can be activated using a digital input (H1- = 60). A Run command is not necessary to use this
function.
S1
S2
SC
Drive
Forward Run
Reverse Run
Digital Input Common
Output Frequency
b2-01 (Zero Speed Level)
E1-09 (Min. Frequency)
0 Hz
Run Command
H1-
= 59
(DC Injection Braking 1
Command)
b2-02 (DC Injection
Braking Current)
ON
OFF
ON
OFF
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