Mitsubishi FR-A740-00023-EC, Инструкция по эксплуатации

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265
Operation setting at alarm occurrence
4
P
ARAME
T
E
R
S
4.18.6 Fault definition (Pr. 875)
When motor thermal protection is activated, an alarm can be output after the motor decelerates to a stop.
Parameter
Number
Name
Initial
Value
Setting
Range
Description
875 Fault definition 0
0 Normal operation
1 The motor decelerates to stop when motor thermal protection is activated.
(1) Output is immediately shutoff at occurrence of any
alarm (setting value is "0", initial value)
⋅
Output is immediately shutoff and an alarm output is provided at alarm
occurrence.
(2) The motor decelerates to stop when motor thermal
protection is activated (setting value is "1")
⋅
When external thermal relay (OHT), motor overload shutoff
(electronic thermal relay function) (THM) or PTC thermistor
(PTC) is activated, turning on the minor fault output 2 signal
(ER) starts the motor to decelerate and an alarm is provided after
deceleration to a stop.
⋅
When the ER signal turns on, decrease load, etc. to allow the inverter
to decelerate.
⋅
At occurrence of an alarm other than OHT, THM and PTC, output is
immediately shut off and an alarm is output.
⋅
Set "97 (positive logic) or 197 (negative logic)" in Pr. 190 to Pr. 196 (output
terminal function selection) and assign the ER signal to the output terminal.
⋅
This function is invalid during position control.
CAUTION
⋅
The value "0" is recommended for the system in which the motor continues running without deceleration due to a large torque
on the load side.
⋅
Changing the terminal assignment using Pr. 190 to Pr. 196 (output terminal function selection) may affect the other functions. Make
setting after confirming the function of each terminal.
♦
Parameters referred to
♦
Pr. 190 to Pr. 196 (output terminal function selection) Refer to page 230
Output
speed
Alarm output
(ALM, ALM2)
OHT
occurrence
Minor fault
output 2
(ER)
E.OHT
display
ON
ON
When Pr.875 = "1"