Hitachi SJ300 Series Instruction Manual page 143

Follow the steps to implement the wiring change shown in the previous diagram.
1. Remove the 2-wire jumper J51 (terminals [R0] and [T0] to connector J51).
2. Procure several inches of multi-strand 20 AWG (0.5mm
3. Connect a wire to terminal [R0] that is long enough to connect to terminal [P] (do not
connect to [P] yet).
4. Connect a wire to terminal [T0] that is long enough to connect to terminal [N] (do not
connect to [N] yet).
5. Remove the ferrite filter from the original jumper wire and then slide it onto the new wires
connecting to terminals [R0] and [T0]. (Be sure to save the original jumper in a safe place.)
6. Connect the wire from [R0] to [P], and connect the wire from [T0] to [N] as shown.
More information on power loss related alarm functions, see
Under-voltage Signal" on page
The following table lists the functions related to the controlled deceleration at power loss
feature. After making the wiring change, use function B050 to enable the feature. Use B051 to
determine the point at which a decaying DC bus voltage will trigger the controlled deceleration.
Use parameter B054 to specify an initial step-wise deceleration at power loss, and B053 to
specify the duration of the linear deceleration. Note that this feature also affects the output
signals that indicate instantaneous power fail and under-voltage conditions (see
Power Failure / Under-voltage Signal" on page
Func.
Name
Code
B050 Controlled deceleration and
stop on power loss
B051 DC bus voltage trigger level
during power loss
B052 Over-voltage threshold during
power loss
B053 Deceleration time setting
during power loss
B054 Initial output frequency
decrease during power loss
2
4–51.
4–51).
Description
Allows inverter control using regen-
erative energy to decelerate after loss
of input power (requires jumper
change)
Sets trigger for controlled decelera-
tion and stop on power loss function
Sets over-voltage threshold for
controlled deceleration function
Deceleration time inverter uses only
at power loss
Sets the initial decrease in output
frequency upon power loss
SJ300 Inverter
) or slightly heavier wire.
"Instantaneous Power Failure /
"Instantaneous
Range
Two option codes:
00Disable
01Enable
0.0 to 1000.V
0.0 to 1000.V
0.01 to 99.99 sec. /
100.0 to 999.9 sec. /
1000 to 3600 sec.
0.00 to 10.00 Hz
4–5