420
PARAMETER
(3) Operating procedure
1) Operating procedure for operation
Operation pattern
2) Signal ON/OFF after parameter setting
Power supply ON
Setting the parameters
Deceleration (stop) inverter operation
Constant-speed bypass operation
Start inverter operation
• [
Pr. 135 = 1
]
(open collector output terminal of inverter)
• [
Pr. 136 = 2.0s
]
• [
Pr. 137 = 1.0s
]
(Set the time longer than the time from when
MC3 actually turns ON until the inverter and
motor are connected. If the time is short, a
restart may not function properly.)
• [
Pr. 57 = 0.5s
]
• [
Pr. 58 = 0.5s
]
(Be sure to set this parameter when bypass
operation is switched to inverter operation.)
MRS
CS
STF
MC1
MC2
MC3
REMARKS
Power-on
OFF
(OFF)
OFF
(OFF)
OFF
(OFF)
OFF
ON
(OFF
ON)
OFF
(OFF)
OFF
ON
(OFF
ON)
External operation mode
(PU operation mode)
At start
(inverter)
OFF
ON
OFF
ON
OFF
ON
ON
OFF
ON
At constant speed
(bypass)
ON
ON
OFF
ON
ON
OFF
ON
ON
OFF
MC2 turns ON after MC3 turns
OFF
(coasting status during this
period) waiting time 2s
Switched to inverter
for deceleration
(inverter)
ON
OFF
ON
ON
ON
ON
OFF
OFF
ON
MC3 turns ON after MC2 turns
OFF
(coasting status during this
period) waiting time 4s
Stop
ON
ON
ON
OFF
ON
OFF
ON
*1
In the operation mode other than External operation or combined operation mode (PU speed command, external operation
command [
Pr. 79 = 3
]), MC1 and MC3 turn ON.
*2
When the MRS and CS signals are ON and the STF (STR) signal is OFF, MC3 is ON, but when the motor was coasted to a
stop from bypass operation last time, a start is made after the time set in [
Pr. 137
] has elapsed.
*3
Inverter operation can be performed when the MRS, STF (STR) and CS signals turn ON. In any other case (MRS signal - ON),
bypass operation is performed.
*4
When the CS signal is turned OFF, the motor switches to bypass operation. However, when the STF (STR) signal is turned
OFF, the motor is decelerated to a stop in the inverter operation mode.
*5
When both MC2 and MC3 are OFF and either MC2 or MC3 is then turned ON, there is a waiting time set in [
Pr. 136
].
*6
When the electronic bypass-inverter switchover sequence function (
Pr. 135 = 1
]) and PU operation interlock function ([
Pr. 79 =
7
]) are used simultaneously, the MRS signal is shared by the PU operation external interlock signal unless the X12 signal is
assigned. (When the MRS and CS signals turn ON, inverter operation is enabled.)
Summary of Contents for FR-A700 Series
Page 245: ...279 2 PARAMETER PARAMETER MEMO ...
Page 440: ...474 PARAMETER MEMO ...
Page 522: ...556 SELECTION MEMO ...
