Omron RX Series - Page 439

7 - 113
7 Detailed Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
7-5 Multi-function Terminal Functions (Group C)
7
• To reset a trip, perform the reset operation, or turn OFF the RUN command. (Example 1)
• If a trip is reset with the RUN command input, the inverter starts operating immediately after the trip is
reset. (Example 2)
• If the RUN command turns ON after the power supply is turned on, the inverter operates normally.
(Example 3)
• The following shows how the power recovery restart prevention function works.
• Use this function to drive a system subject to a large load inertia moment during acceleration and
deceleration with the inverter and during constant speed operation with a commercial power supply,
respectively.
• Set the Multi-function Input S1 to S8 Selection (C001 to C008) to 14 (CS).
• When the terminal CS turns ON with the RUN command input, the inverter shuts off its output. Be
sure that the output is maintained while the motor sequence is switched.
• When the terminal CS is turned from ON to OFF with the RUN command ON, after expiration of the
Restart Standby Time (b003), the inverter accelerates at the frequency according to the rotation
speed of the motor in a free-run state (“frequency matching restart”). However, the inverter may
restart at 0 Hz in any of the following cases:
• When the Frequency Matching Lower Limit Frequency (b007) is set, the inverter may restart at 0 Hz if
the motor rotation speed decreases to the set frequency. (Refer to page 7-63.)
Commercial Switch (CS)
The motor rotation speed is equal to or lower than 1/2 of the base rotation speed.
The motor induction voltage decreases quickly.
Parameter No. Function name Data Default data Unit
C001 to C008
Multi-function Input S1
to S8 Selection
14: CS (Commercial switch) – –
Power supply
FW
(Forward)
ON OFF
ON
USP
RS
(Reset)
Alarm
Output
frequency
Power supply
FW
(Forward)
ON
OFF
ON
ON
OFF
ON
USP
RS
(Reset)
Alarm
Output
frequency
(Example 1)
Power-ON with RUN command ON
(Reset with RUN command OFF)
(Example 2)
Power-ON with RUN command ON
(Reset with RS)
(Example 3)
Power-ON, then RUN command ON
(Normal operation)
Power supply
FW
(Forward)
USP
RS
(Reset)
Alarm
Output
frequency