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Mitsubishi Electric FR-A500 Instruction Manual Page 168

Transistorized inverter.
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Setting
Signal
Positive
Negative
Name
logic
logic
17

MC1
18

MC2
19

MC3
20
120
BOF
25
125
FAN
26
126
FIN
27
127
ORA
28
128
ORM
29
129
Y29
30
130
Y30
31
131
Y31
32
132
Y32
33
133
RY2
94
194
Y94
95
195
Y95
98
198
LF
99
199
ABC
9999

0 to 99:
Positive logic
100 to 199: Negative logic
Note: 1. Under encoder feedback control (when the FR-A5AP option is fitted), the operations of the up-to-frequency
SU and frequency detection FU, FU2, FU3 are as follows:SU, FU: The actual speed (frequency) provided
by the encoder feedback signal is output at or above the frequency specified for detection.
FU2, FU3: The inverter output frequency is output at or above the frequency specified for detection.
2. When the frequency setting is varied with the analog signal or the
note that the output of the SU (up-to-frequency) signal may alternate between ON and OFF due to that
varying speed and the timing of the varying speed dependent on the acceleration/deceleration time setting.
(Such alternation will not take place when the acceleration/deceleration time setting is "0s".)
3. This signal is output when "5" is set in Pr. 79 "operation mode selection" and the external operation mode is
selected (the inverter goes into the programmed mode).
4. The same function may be set to more than one terminal.
5. When the function is activated, the terminal conducts with the settings of 0 to 99 and does not
conduct with the settings of 100 to 199.
6. Pr. 190 to Pr. 195 do not function if the values set are other than the above.
7. When Pr. 76 = 1 or 3, the output signals of the SU, IPF, OL and FU output terminals conform to Pr. 76.
When an inverter alarm occurs, the signal outputs are switched over to alarm code outputs.
8. The output assignment of the RUN terminal and alarm output relay conforms to the above setting
independently of Pr. 76.
9. When making a power-on reset, the alarm output 2 signal "Y94" is turned off as soon as power is turned
off.
10. The alarm output 2 signal "Y94" can not be assigned to the extended assignment terminal of the option unit
(FR-A5AY, FR-A5AR, FR-A5NR).
11. When parameters are copied to the inverter without this signal, the changed settings of output terminal
function selection parameters (Pr. 190 to Pr. 195) become "9999 (no function)"
Function
Commercial power supply-
inverter switchover MC1
Commercial power supply-
inverter switchover MC2
Commercial power supply-
inverter switchover MC3
Brake opening request
Fan fault output
Fin overheat pre-alarm
In-position
Orientation error
Overspeed detection
Forward running output
Reverse running output
Regeneration status output
Operation ready 2
Alarm output 2
Capacitor life alarm output
Minor fault output
Alarm output
No function
159
Operation
Refer to Pr. 135 to Pr.139 (commercial power
supply-inverter switchover).
Refer to Pr. 278 to Pr. 285 (brake sequence functions).
Output when a fan fault occurs.
Output when the heat sink temperature reaches
about 85% of the fin overheat protection
temperature.
When orientation is valid (only when FR-A5AP
option is loaded)
For encoder feedback control, vector control (only
when the FR-A5AP option is loaded)
For vector control
(only when the FR-A5AP option is loaded)
Output when the inverter's protective function is
activated to stop the output (major fault).
Continue outputting the signal during inverter reset and
stop outputting after reset is cancelled. (Note 9, 10, 11)
Refer to Pr. 503 and Pr. 504 (capacitor life alarm)
Output when a minor fault (fan fault or
communication error alarm) occurs.
Output when the inverter's protective function is
activated to stop the output (major fault).
Stops output when reset is on.

PARAMETERS
Related
parameter
Pr. 135 to
Pr. 139
Pr. 278 to Pr. 285
Pr. 244


Pr. 503, Pr. 504
Pr. 121, Pr. 244


key of the operation panel,
4

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    good manual and it is very good to understand the contant of inverter and i lernt many things in this manual