2.3 Overview of Function Code
C
hap.
2
FUN
CT
IO
N
C
O
D
E
S
■
Enable rescue operation by means of brake control –
RBRK
(Function code data = 114)
When this function is programed to any of the digital inputs, and it becomes ON, behavior of the
output function
BRKS
changes.
BRKS
function is not dependant anymore of RUN command.
For details, refer to the descriptions of function codes L117 to L119.
■
Short-circuit control feedback –
SCCF
(Function code data = 115)
SCCF
input function is used to get a feedback from the auxiliary contacts of the motor phases short
circuit device (mini contactor or power relay).
To feedback the status of the short circuit device is mandatory. Feedback is needed in order to avoid
that, inverter enables IGBT gates before motor phases short circuit is removed. In case that any
digital output is programed with the function
SCC
and no input is programmed with the function
SCCF
inverter will trip
Er6
.
For details, refer to the descriptions of function codes L120 and L121.
■
Stand-by mode –
STBY
(Function code data = 117)
When following conditions are met, inverter enters Stand-by mode:
・
STBY
terminal command is ON
・
Inverter is stopped (No operation command and IGBT gates are OFF)
When inverter enters Stand-by mode the following actions are executed:
・
RDY
: OFF
・
Power supply to built-in option is stopped in order to reduce power consumption
・
Cooling fan is stopped
・
The bypass contact of the charging circuit (73X) is turned OFF
Time diagram for
STBY
function is show below:
RDY
LV
Communication
with PG option
STBY
FAN
Power supply
to PG option
ON
Communication ON
ON
ON
ON
ON
ON
Communication ON
Initialization
ON
Communication
is enabled
Communication
is disabled
73X
ON
ON
ON
It may take a maximum time of 2 seconds until inverter becomes ready to RUN when it returns to
normal state from stand-by mode.
( ) above
No.1000
are logical inversion signals.(active OFF), except the followings.
THR 1009:active ON, 9 :active OFF
DRS 1066:active ON, 66 :active OFF
THR2 1101:active ON, 101 :active OFF
2-55
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