Unattended Start Protection - Hitachi X200-002SFE/NFU Instruction Manuals

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Unattended Start Protection

If the Run command is already set when power is turned ON, the inverter starts
running immediately after powerup. The Unattended Start Protection (USP) function
prevents that automatic startup, so that the inverter
intervention. When USP is active and you need to reset an alarm and resume running,
either turn the Run command OFF, or perform a reset operation by the terminal [RS]
input or the keypad Stop/reset key.
In the figure below, the [USP] feature is enabled. When the inverter power turns ON,
the motor does not start, even though the Run command is already active. Instead, it
enters the USP trip state, and displays E13 error code. This requires outside
intervention to reset the alarm by turning OFF the Run command per this example (or
applying a reset). Then the Run command can turn ON again and start the inverter
output.
Option
Code
13
Valid for inputs:
Required settings
Notes:
• Note that when a USP error occurs and it is
canceled by a reset from a [RS] terminal input,
the inverter restarts running immediately.
• Even when the trip state is canceled by turning
the terminal [RS] ON and OFF after an under
voltage protection E09 occurs, the USP function
will be performed.
• When the running command is active
immediately after the power is turned ON, a
USP error will occur. When this function is
used, wait for at least three (3) seconds after the
powerup to generate a Run command.
More user manuals on
Run command [FW,RV] 1
0
[USP] terminal 1
0
Alarm output terminal 1
0
Inverter output frequency
0
Inverter power supply 1
0
Events:
Terminal
Function Name
Symbol
USP Unattended Start
Protection
C001~C005
(none)
ManualsBase.com
will not
Alarm Run
E13
cleared command
State
ON On powerup, the inverter will not resume a Run
command (mostly used in the US)
OFF On powerup, the inverter will resume a Run
command that was active before power loss
Example (default input configuration shown for
–FU models; –FE and –FR models require input
configuration—see
5
See I/O specs on page 4–6.
run without outside
t
Description
page 3–49):
USP
L PCS P24
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