5.7 H: Terminal Functions
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 167
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.
Note: 1. If a Run command is input while DC Injection 2 is active, then DC Injection 1 will be performed for the time set in b2-03.
Acceleration will not start until the time set in b2-03 has passed.
2. If the frequency reference is kept at zero after a Run command has been entered and the time b2-03 has passed, then the drive will
continue to perform DC Injection 2 until the digital input is released.
3. A Run command has priority over the DC Injection 2 command.
4. 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 61, 62: External Speed Search command 1, 2
These input functions can be used to enable Speed Search even if parameter b3-01 = 0 (no Speed Search at start). Refer
to b3-01: Speed Search Selection at Start on page 118 for details on how to use the input signals. Refer to b3: Speed
Search on page 115 for more about Speed Search.
Note: Operator error oPE03 will result if both Speed Search 1 and Speed Search 2 are set to the input terminals at the same time.
Setting 65/66: KEB 1 (N.C.)/2 (N.O.)
A digital input programmed for this function can be used to activate the KEB 1 function and detect power supply return.
If KEB 1 is activated, the drive uses the method selected in parameter S4-01 to perform KEB.
Refer to S4: KEB Mode Selection on page 221 for details on how to use these input settings.
Setting 67: Communication Test Mode
The drive has a built-in function for self-diagnosing the serial communications operation. The test involves wiring the
send and receive terminals of the RS-485/422 port together. The drive transmits data and then confirms the
communications are received normally. Refer to Self-Diagnostics on page 406 for details on how to use this function.
Setting 7C/7D: Short Circuit Braking (N.O./N.C.) (PM OLV only)
An input programmed for this function can be used to activate Short Circuit Braking in Open Loop Vector Control for
PM motors. By linking all three phases of a PM motor it creates a braking torque in a rotating motor and can be used to
stop a rotating motor or prevent a motor from coasting by external forces.
Description
Digital Inputs
Setting 65 (N.C.) Setting 66 (N.O.)
KEB 1 deceleration Open Closed
Normal operation Closed Open
Description
Digital Inputs
Setting 7C (N.O.) Setting 7D (N.C.)
Normal operation Open Closed
Short-Circuit Braking Closed Open
Frequency Reference
Output Frequency
b2-01 (Zero Speed Level)
E1-09 (Min. Frequency)
0 Hz
Run Command
H1-
= 60
(DC Injection Braking 2
Command)
b2-03 (DC Injection
Braking Time at Start)
b2-10 (DC Injection
Braking Current 2)
b2-02 (DC Injection
Braking Current)
ON OFF
ON OFF
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