2.3 Overview of Function Code
C
hap.
2
FUN
CT
IO
N
C
O
D
E
S
L85
MC Control (Startup delay time)
L86
MC Control (MC OFF delay time)
L85 and L86 specify the ON and OFF timings of the MC control signal
SW52-2
or
SW52-3
.
SW52-2
is assigned to a general-purpose, programmable output terminal by setting "12" in function
codes E20 to E24 and E27.
SW52-3
is assigned by setting “104” to them. The MC control signal
opens or closes the magnetic contactor connected between the inverter and motor.
■
Startup delay time (L85)
L85 specifies the delay time from when the MC control signal
SW52-2
turns ON until the main
circuit output gate turns ON.
- Data setting range:
0.00 to 10.00 (s)
Even if no
SW52-2
is assigned to a general-purpose programmable output terminal,
turning a run command ON turns the main circuit output gate ON after the delay time
specified by L85 elapses.
■
MC OFF delay time (L86)
L86 specifies the delay time from when the main circuit output gate turns OFF until the MC control
signal
SW52-2
turns OFF.
- Data setting range:
0.00 to 10.00 (s)
■
MC control
SW52-2
The table below lists the inverter running conditions and triggers required for turning the MC control
signal
SW52-2
ON or OFF. The timing diagram is shown on the next page.
SW52-2
ON
SW52-2
OFF
Current status
retained
(1) When all of the following conditions
are met, turning a run command from
OFF to ON turns the MC control signal
ON.
- "Coast-to-stop"
BX
OFF
- No trip
- Terminals [EN1]/[EN2] ON
- "Force to decelerate"
DRS
OFF
(2) Any of the following events with a run
command being ON turns the MC
control signal ON.
- "Coast-to-stop"
BX
from ON to OFF.
- A trip that occurred is reset.
- Terminals [EN1]/[EN2] from OFF to
ON
Any of the following events with the
MC control signal being ON turns the
MC control signal OFF after the MC
OFF delay time specified by L86.
- Inverter main circuit output gate
from ON to OFF
- Run command from ON to OFF with
the inverter main circuit output gate
being OFF
- "Coast-to-stop"
BX
from OFF to ON
- A trip occurs.
- Terminals [EN1]/[EN2] from ON to
OFF
- "Force to decelerate"
DRS
from OFF
to ON (below the stop speed).
Except the
conditions listed
at left
* When the conflicting conditions are present, e.g., from ON to OFF conditions and from OFF to
ON conditions, the latter event has priority.
* The
BX
and [EN
1]/[EN2]
are in normal logic.
* The "Force to decelerate" state is kept from the entry of a
DRS
command until the
DRS
is turned
ON, and the run command and inverter main circuit output gate are turned OFF.
2-167
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