Motor Line-To-Line Resistance (Cn-12); Motor Iron-Core Loss (Cn-13); Dc Injection Braking Time At Stop (Cn-16); Dc Injection Braking Time At Start (Cn-17) - TECO speecon 7200ma Instruction Manual

(6) Motor Line-to-Line Resistance
(7) Motor Iron-Core Loss
•It is for torque compensation function. The default setting depends upon the
inverter capacity (Sn-01). Normally, the setting does not need to be altered. See
Table 10~11 on page 69.
(8) DC Injection Braking Starting Frequency
(9) DC Injection Braking Current
(10)DC Injection Braking Time at Stop
(11)DC Injection Braking Time at Start
•The DC injection braking function decelerates by applying a DC current to the
motor. This happens in the 2 cases:
a. DC injection braking time at start: It is effective for temporarily stopping and
then restarting, without regeneration, a motor coasting by inertia.
b. DC injection braking time at stop: It is used to prevent coasting by inertia when
the motor is not completely stopped by normal deceleration when there is a
large load. Lengthening the DC injection braking time (Cn-16) or increasing the
DC injection braking current (Cn-15) can shorten the stopping time.
•For the DC injection braking current (Cn-15), set the value for the current that is
output at the time of DC injection braking. DC injection braking current is set as a
percentage of inverter rated output current, with the inverter rated output current
taken as 100%.
•For the DC injection braking time at start (Cn-17), set the DC injection braking
operating time when the motor is started.
•For the DC injection braking starting frequency (Cn-14), set the frequency for
beginning DC injection braking for deceleration. If the excitation level is less than
the Min. output frequency (Cn-07), the DC injection braking will begin from Min.
output frequency.
•If the DC injection braking time at start (Cn-17) is 0.0, the motor starts from the
Min. output frequency and no DC injection braking are enabled.
•If the DC injection braking time at stop (Cn-16) is 0.0, no DC injection braking is
enabled. In this case, the inverter output will be blocked off when the output
frequency is less than the DC injection braking at start frequency (Cn-14).
(Cn-12)
(Cn-13)
(Cn-14)
(Cn-15)
(Cn-16)
(Cn-17)
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