Mitsubishi Electric FR-CS82S-025 Instruction Manual page 162

NOTE
• If the automatic restart after instantaneous power failure is selected (Pr.57 Restart coasting time ≠ "9999") while the power
failure time deceleration-to-stop function is set enabled (Pr.261 = "1"), the power failure time deceleration stop function is
disabled.
• When the power failure time deceleration-to-stop function is enabled (Pr.261 = "1"), the inverter does not start even if the power
is turned ON or inverter reset is performed with the start signal (STF/STR) ON. Turn OFF the start signal once and then ON
again to make a start.
Power supply
STF
Y46
 Continuous operation function at instantaneous power failure (Pr.261 =
"2")
• The motor re-accelerates to the set frequency if the power restores during deceleration triggered by a power failure.
• Combining with the automatic restart after instantaneous power failure function enables deceleration at a power failure and
re-acceleration at a power restoration.
If the power is restored after stoppage by a power failure, a restart operation is performed when automatic restart after
instantaneous power failure (
When power is restored during
Pr.261 = 2
deceleration at occurrence of
power failure
IPF
Power
supply
Output
frequency
During deceleration
at occurrence of
power failure
Y46
*1 The acceleration time depends on Pr.7 (Pr.44).
 During deceleration at occurrence of power failure (Y46) signal
• After deceleration by a power failure, the inverter does not restart even though the start command is input. Check the
During deceleration at occurrence of power failure (Y46) signal at a power failure.
• The Y46 signal is turned ON during deceleration at occurrence of power failure and in a stop status after deceleration at
occurrence of power failure.
• For the Y46 signal, set "46 (positive logic)" or "146 (negative logic)" in
the function.
NOTE
• When "2" is set to Pr.30 Regenerative function selection (when the FR-HC2 or FR-CV is used), the power failure time
deceleration-to-stop function is disabled at a power failure.
• The power failure time stop function is disabled during a stop or when the breaker is tripped.
• The Y46 signal turns ON if an undervoltage occurs even when a deceleration at a power failure has not occurred. For this
reason, the Y46 signal is sometimes output instantaneously when the power supply is turned OFF. This is not a fault.
• When the power failure time deceleration stop function is selected, undervoltage protection (E.UVT) is invalid.
• Changing the terminal assignment using Pr.178 to Pr.182 (Input terminal function selection) or Pr.195 (Output terminal
function selection) may affect other functions. Set parameters after confirming the function of each terminal.
ON
Not started as inverter Output
frequency
is stopped due to power
failure
Time
OFF
ON
ON
≠ "9999") is selected.
Pr.57
Pr.261 = 2, Pr.57
Power
supply
Output
frequency
During deceleration
at occurrence of
Reacceleration ∗1
power failure
Time
Y46
When used with automatic restart
9999
after instantaneous power failure
During power failure
Automatic restart
after instantaneous
power failure
Reset time + Pr.57
Pr.195 (Output terminal function selection)
5.10 (A) Application parameters
2
2
3
4
5
6
7
8
9
Time
10
to assign
161
5. PARAMETERS