Instruction manual

INSTALLATION AND WIRING
14
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1
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Description of the main circuit terminals
Symbol Terminal Name Description
R, S, T
(L
1
, L
2
, L
3
)
AC power input
Connect to the commercial power supply. Keep these terminals
unconnected when using the high power factor converter.
U, V, W Inverter output Connect a three-phase squirrel-cage motor.
P (+), PR
Brake resistor
connection
Connect the optional brake resistor across terminals P-PR (+-PR)
(not for 0.1K and 0.2K).
P (+), N (
−
) Brake unit connection Connect the optional brake unit or high power factor converter.
P (+), P1
Power factor improving
DC reactor connection
Disconnect the jumper from terminals P-P1 (+-P1) and connect the
optional power factor improving DC reactor.
Ground For grounding the inverter chassis. Must be earthed.
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Description of the control circuit terminals
Type Symbol Terminal Name Description
MRS Output halt
Turn on the MRS signal (20ms or longer) to
stop the inverter output.
Used to shut off the inverter output to bring
the motor to a stop by the electromagnetic
brake.
Setting of Pr. 183
"MRS terminal (RY9)
function selection"
changes the terminal
function.
RES Reset
Used to reset the protective circuit activated. Turn on the RES
signal for more than 0.1 second, then turn it off. The signal can
always be reset with the factory setting.
Setting Pr. 75 enables reset only at an inverter alarm occurrence.
(Refer to page 103.)
P24
Contact input
common (source)
Common terminal for contact inputs for use in the source input
mode.
In the source input mode, connection with this terminal switches the
signal on and disconnection switches it off.
Input signals
Contacts, e.g. start and synchronous selection
SD
Contact input
common (sink)
Common terminal for contact inputs for use in the sink input mode.
In the sink input mode, connection with this terminal switches the
signal on and disconnection switches it off.
Output signals
Contact
A, B, C
(note)
Alarm output
Contact output indicating that the output has
been stopped by the inverter protective
function activated. 230VAC 0.3A, 30VDC
0.3A. Alarm: discontinuity across B-C
(continuity across A-C), normal: continuity
across B-C (discontinuity across A-C).
Output terminal
(remote input)
function choices
(Pr. 190 to Pr. 192)
change the terminal
functions.
Note : Wire the cables for application of voltages to the contact outputs so that they
may be separated from the PLC power at the no-fuse breaker etc. If they are
connected to the same power supply as is used by the PLC, the inverter cannot
be changed during CC-Link communication.
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