Parameters
(H) Protective function parameter
FR-A800
5 - 309
External thermal relay input (OH signal, E.OHT)
External thermal relay input connection diagram
●
The external thermal relay input (OH) signal is used when using an external thermal relay or a
thermal protector built into the motor to protect the motor from overheating.
●
When the thermal relay function is activated, the external thermal operation (E.OHT) shuts off the
inverter output.
●
For the terminal used for the OH signal input, set "7" in any of Pr. 178 to Pr. 189 (input terminal
function selection) to assign the function.
●
Vector-control-dedicated motors (SF-V5RU) are equipped with thermal protectors.
Connect the recommended 2 W 1 kΩ resistor between the terminal SD and OH. (Refer to page 2-77.)
●
When the control terminal option (FR-A8TP) is used, valid/invalid setting of the terminal OH can
be changed using Pr. 876 "Thermal protector input".
Fig. 5-126:
Connection of an external thermal relay
I002582E_G
I002583E_G
Fig. 5-127:
Connecting the SF-V5RU thermal protector
NOTE
Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may
affect the other functions. Set parameters after confirming the function of each terminal.
U
V
W
OH
PC
M
Motor
Thermal relay protector
Inverter
G1
G2
OH
SD
PC
SF-V5RU
Inverter
2 W 1 k
Ω
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 ...
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Page 1194: ...EC Declarations of Conformity Appendix A 54 ...
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Page 1196: ...EC Declarations of Conformity Appendix A 56 ...
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Page 1202: ...EC Declarations of Conformity Appendix A 62 ...
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Page 1206: ...EC Declarations of Conformity Appendix A 66 ...
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Page 1208: ...EC Declarations of Conformity Appendix A 68 ...
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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 ...
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