LS ELECTRIC SV-iS7 Series, User Manual

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Learning Advanced Features
290
Code Description
However, if the auto change mode selection (APO-35) is set to “2
(Main )” and the main and auxiliary motors are connected to inverter
output terminals Relay1, 2, Q1, and Q2 (I/O expansion module
used) respectively, Interlock 1, 2, 3 and 4 correspond to the motors
connected to Relay 1, 2, Q1 and Q2.
APO-38 Interlock
Select “1 (Yes) ” to enable an interlock operation.
1) If there are five motors and the auto change mode selection
(APO-35) is set to
” 0 (None)” or “1 (Aux)”, the operation is as follows:
If signals are sent to the terminal block set at Interlock 3 with a fault
at motor 3 when it is static, the auxiliary motors operate in the
sequence of 1, 2, and 4 (when the starting auxiliary motor selection
APO-
21 is “1”) . If the terminal block signals are released, the
operation sequence is 1, 2, 3, and 4.
If signals are sent to the terminal for Interlock 3, auxiliary motor 3
stops and auxiliary motor 4 operates. If the interlock signal is
released, auxiliary motor 4 stops and auxiliary motor 3 operates
again.
2) If there are four motors and the auto change mode selection
(APO-35) is set to
“2 (Main)” , the operation is as follows:
If the starting auxiliary motor selection APO-21 is set to
“1”, motor 1
is operated by the inverter and the remaining motors (2, 3, and 4)
are operated by the auxiliary motors and interlock signals are sent
to the auxiliary motors, the operation sequence is the same as the
procedure described in condition 1) above.
However, if there is a problem with motor 1, which is connected to
the inverter, the output is immediately blocked and motor 2
becomes connected to the inverter output and the operation
sequence of the auxiliary motor is 3 and 4. If the interlock signal of
motor 1 is released, the operation sequence of the auxiliary motor
is 3, 4, and 1.