Parameters
(H) Protective function parameter
FR-A800
5 - 303
5.10.1 Motor
overheat
protection
(electronic thermal O/L relay)
Set the current of the electronic thermal O/L relay function to protect the motor from overheating.
Such settings will provide the optimum protective characteristic considering the low cooling capa-
bility of the motor during low-speed operation.
For FR-A820-00077(0.75K) or lower and FR-A840-00038(0.75K) or lower, the current is set to 85%
of the rated current.
The setting range for FR-A820-03160(55K) or lower and FR-A840-01800(55K) or lower. The mini-
mum setting increment is "0.01 A".
The setting range for FR-A820-03800(75K) or higher, and FR-A840-02160(75K) or higher. The
minimum setting increment is "0.1 A".
Pr.
Name
Initial value
Setting
range
Description
9
H000
Electronic thermal O/L relay
Inverter
rated current
0 to 500 A
Set the rated motor current.
0 to 3600 A
600
H001
First free thermal reduction
frequency 1
9999
0 to 590 Hz
The electronic thermal O/L relay operation level
can be changed to match the motor temperature
characteristics with the combination of these
three points (Pr. 600, Pr. 601), (Pr. 602, Pr. 603),
(Pr. 604, Pr. 9).
9999: Free thermal O/L relay invalid
9999
601
H002
First free thermal reduction
ratio 1
100%
1 to 100%
9999
602
H003
First free thermal reduction
frequency 2
9999
0 to 590 Hz
9999
603
H004
First free thermal reduction
ratio 2
100%
1 to 100%
9999
604
H005
First free thermal reduction
frequency 3
9999
0 to 590 Hz
9999
607
H006
Motor permissible load level
150%
110 to 150%
Set the permissible load according to the motor
characteristics.
51
H010
Second electronic thermal O/
L relay
9999
0 to 500 A
Enabled when the RT signal is ON.
Set the rated motor current.
0 to 3600 A
9999
Second electronic thermal O/L relay invalid
692
H011
Second free thermal
reduction frequency 1
9999
0 to 590 Hz
The electronic thermal O/L relay operation level
can be changed to match the second motor
temperature characteristics with the
combination of these three points (Pr. 692,
Pr. 693), (Pr. 694, Pr. 695), (Pr. 696, Pr. 51).
9999: Second free thermal O/L relay invalid
9999
693
H012
Second free thermal
reduction ratio 1
100%
1 to 100%
9999
694
H013
Second free thermal
reduction frequency 2
9999
0 to 590 Hz
9999
695
H014
Second free thermal
reduction ratio 2
100%
1 to 100%
9999
696
H015
Second free thermal
reduction frequency 3
9999
0 to 590 Hz
9999
608
H016
Second motor permissible
load level
9999
110 to 150%
Set the permissible load when the RT signal is
ON.
9999
The Pr.607 setting is applied even when the RT
signal is ON.
561
H020
PTC thermistor protection
level
9999
0.5 to 30 kΩ
Set the PTC thermistor protection level
(resistance).
9999
PTC thermistor protection disabled
1016
H021
PTC thermistor protection
detection time
0 s
0 to 60 s
Set the time from when the resistance of the PTC
thermistor reaches the protection level until the
protective function is activated.
876
H022
Thermal protector input
1
0
Terminal OH of the control terminal option (FR-
A8TP) is invalid.
1
Terminal OH of the control terminal option (FR-
A8TP) is valid.
Summary of Contents for FR-A820-00046 (0.4K)
Page 2: ......
Page 4: ......
Page 144: ...System configuration for Ethernet communication FR A800 E Installation and wiring 2 114 ...
Page 202: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Page 1090: ...Check first when you have a trouble Protective functions 6 50 ...
Page 1189: ...Appendix EC Declarations of Conformity FR A800 A 49 ...
Page 1190: ...EC Declarations of Conformity Appendix A 50 ...
Page 1191: ...Appendix EC Declarations of Conformity FR A800 A 51 ...
Page 1192: ...EC Declarations of Conformity Appendix A 52 ...
Page 1193: ...Appendix EC Declarations of Conformity FR A800 A 53 ...
Page 1194: ...EC Declarations of Conformity Appendix A 54 ...
Page 1195: ...Appendix EC Declarations of Conformity FR A800 A 55 ...
Page 1196: ...EC Declarations of Conformity Appendix A 56 ...
Page 1197: ...Appendix EC Declarations of Conformity FR A800 A 57 ...
Page 1198: ...EC Declarations of Conformity Appendix A 58 ...
Page 1199: ...Appendix EC Declarations of Conformity FR A800 A 59 ...
Page 1200: ...EC Declarations of Conformity Appendix A 60 ...
Page 1201: ...Appendix EC Declarations of Conformity FR A800 A 61 ...
Page 1202: ...EC Declarations of Conformity Appendix A 62 ...
Page 1203: ...Appendix EC Declarations of Conformity FR A800 A 63 ...
Page 1204: ...EC Declarations of Conformity Appendix A 64 ...
Page 1205: ...Appendix EC Declarations of Conformity FR A800 A 65 ...
Page 1206: ...EC Declarations of Conformity Appendix A 66 ...
Page 1207: ...Appendix EC Declarations of Conformity FR A800 A 67 ...
Page 1208: ...EC Declarations of Conformity Appendix A 68 ...
Page 1209: ...Appendix EC Declarations of Conformity FR A800 A 69 ...
Page 1210: ...EC Declarations of Conformity Appendix A 70 ...
Page 1211: ...Appendix EC Declarations of Conformity FR A800 A 71 ...
Page 1212: ...EC Declarations of Conformity Appendix A 72 A 7 2 FR A846 series ...
Page 1213: ...Appendix EC Declarations of Conformity FR A800 A 73 ...
Page 1214: ...EC Declarations of Conformity Appendix A 74 ...
Page 1215: ...Appendix EC Declarations of Conformity FR A800 A 75 ...
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