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7 Other Functions
7 - 80
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
You can provide thermal protection for external equipment such as a motor by connecting a thermistor
installed on it to the inverter and enabling this function.
Connect a PTC thermistor to the inverter. If the resistance of the PTC thermistor becomes approxi-
mately 3 k
Ω
or more, the inverter will trip (E35).
To have the inverter trip at lower than 3 k
Ω
, increase the Thermistor Adjustment (C085) value. Con-
versely, to have the inverter trip at higher than 3 k
Ω
, decrease the C085 value.
Connect the external thermistor between the control terminals S5 and SC and set the Multi-function
Input S5 Selection (C005) to 19 (TH: PTC thermistor thermal protection).
Then, set the adjustment parameter according to the specifications of the thermistor.
When using this function, keep the wiring distance between the motor and the inverter at 20 m or shorter.
Since the current flowing through the thermistor is weak, take measures, such as isolating the thermis-
tor cable, to prevent noise due to the motor current.
Note
If no thermistor is connected when C005 is set to 19, a trip will occur.
The RUN signal will be output from a multi-function output terminal or the multi-function relay output ter-
minal during inverter operation.
This signal turns ON only with the inverter output. The RUN signal is not output even if the RUN com-
mand is input when the frequency is set to 0 Hz. (Note that the RUN LED is lit when the RUN command
is input.)
Allocate the Multi-function Output P1/P2 Selection (C021/C022) or the Multi-function Relay Output (MA,
MB) Function Selection (C026) to 00 (RUN: Signal during RUN).
This signal is also output when DC injection braking is active.
The timing diagram is as follows. The RUN signal remains ON until the motor stops even if the RUN
command (FW) turns OFF.
7-8-7
Thermistor Trip Function
Parameter
No.
Function name
Data
Default
data
Unit
C085
Thermistor Adjustment
0.0 to 200.0
Fine-tune the gain relative to the
input voltage.
100.0
%
C005
Multi-function Input S5 Selection
19:
TH (PTC thermistor thermal
protection)
02 (CF1)
−
7-8-8
Signal during RUN (RUN)
Parameter
No.
Function name
Data
Default
data
Unit
C021, C022
Multi-function Output P1/P2
Selection
00:
RUN (Signal during RUN)
−
−
C026
Multi-function Relay Output (MA,
MB) Function Selection
Output frequency
RUN output
FW input (Forward)
Summary of Contents for SYSDRIVE MX2 SERIES
Page 1: ...Multi function Compact Inverter MX2 Series Type V1 User s Manual I585 E1 01 3G3MX2 A V1 ...
Page 32: ...CONTENTS 29 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 108: ...2 Design 2 48 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 176: ...4 Parameter List 4 42 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 538: ...10 Troubleshooting 10 22 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 598: ...12 Options 12 50 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 614: ...Appendices A 16 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 615: ...I 1 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 I Index ...