MITSUBISHI ELECTRIC FR-S520E - Manual (Page 139)

129
Maintenance parameters
2
F
UNCT
IO
NS
4) Output of maintenance timer value (maintenance parameter H1)
After the output current average value is output as low pulse shape, the
maintenance timer value is output as high pulse shape. The output time of the
maintenance timer value is obtained from the following calculation.
Refer to (page 96).
Refer to (page 73).
Maintenance timer value (H1)
x 5s (Maintenance timer value 100%/5s)
40000h
Note that the output time range is 2 to 9s, and
it is 2s when the maintenance timer value (H1)
is less than 16000h and 9s when exceeds
72000h.
REMARKS
•Mask of data output and sampling of output current are not performed during acceleration/
deceleration.
•Set "93" in Pr. 64 and assign the current average value monitor signal (Y93) to the RUN
terminal. It can not be assigned to the ABC contact (Pr.65)
•When the speed is changed to acceleration/deceleration from constant speed during start bit
output, the data is judged as invalid, the start bit is output as high pulse shape for 3.5s, and
the end signal is output as low pulse shape for 16.5s.
The signal is output for at least 1 cycle even when acceleration/deceleration state continues
after the start bit output is completed.
•When the output current value (inverter output current monitor) is 0A on completion of the 1
cycle signal output, the signal is not output until the speed becomes constant next time.
•The current average value monitor signal (Y93) is output as low pulse shape for 20s (without
data output) under the following condition.
(1) when the motor is in the acceleration/deceleration state on completion of the 1 cycle
signal output
(2) when the 1 cycle output is completed during restart operation with automatic restart after
instantaneous power failure (Pr. 57
≠
"---")
(3) when automatic restart operation was being performed with automatic restart after
instantaneous power failure selected (Pr. 57
≠
"---") on completion of the data output mask
♦Related parameters♦
· Assignment of Y93 signal to terminal ⇒ Pr. 64 "RUN terminal function selection"
(Refer to page 104.)
· Maintenance timer value ⇒ maintenance parameter H1 "maintenance timer (Refer to page 126.)
· Automatic restart after instantaneous power failure operation ⇒ Pr. 57 "restart coasting time"
(Refer to page 96.)
9
2
16000
(s)
Maintenance timer value Signal output time
72000(h)
Y93 signal
2) the start bit is output
as high pulse shape
for 3.5s
invalid cycle(20s)
5) the end signal is
output as low pulse
shape for 16.5s
next cycle
output frequency
previous cycle
the speed is changed to deceleration
from the constant speed during start bit
output