Mitsubishi Electric 800 Series Instruction Manual page 239

 Cooling fan operation command signal (Y206 signal)
• The cooling fan operation command signal (Y206 signal) can be output when the inverter cooling fan meets the conditions
for running. The function can be used when the fan installed on the enclosure is synchronized with the inverter cooling fan.
• Y206 signal indicates the operating command condition of the inverter cooling fan depending on the power supply ON/OFF
or the Pr.244 settings. The signal does not indicate the actual operation of the cooling fan. (The signal is output even if the
cooling fan is stopped due to a fault.)
• To use the Y206 signal, set "206 (positive logic) or 306 (negative logic)" in one of Pr.190 to Pr.196 (Output terminal
function selection) to assign function to an output terminal.
 Cooling fan operation selection during the test operation (Pr.244 = "1000,
1001, 1101 to 1105" (P.H106 = "1"))
• When P.H106 = "1" or Pr.244 = "1000, 1001, or 1101 to 1105", the cooling fan can be set to always OFF during PM motor
test operation.
NOTE
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.190 to Pr.196 (Output terminal function selection)
5.7.3 Earth (ground) fault detection at start / restricting reset
method for an earth (ground) fault
The reset method for the output side earth (ground) fault overcurrent (E.GF) can be restricted.
• Select whether to enable or disable the earth (ground) fault detection at start. When enabled, the earth (ground) fault
detection is performed immediately after a start signal input to the inverter.
• Select whether to restrict the reset method for an earth (ground) fault.
Pr.
249 Earth (ground) fault
H101 detection at start
 Selecting whether to perform the earth (ground) fault detection at start
V/F V/F V/F Magnetic flux Magnetic flux Magnetic flux
• If an earth (ground) fault is detected at start while Pr.249 = "1 or 2", the output side earth (ground) fault overcurrent (E.GF)
is detected and output is shut off. (Refer to
• Earth (ground) fault detection at start is enabled under V/F control and Advanced magnetic flux vector control.
• When the Pr.72 PWM frequency selection setting is high, enable the earth (ground) fault detection at start.
NOTE
• Because the detection is performed at start, output is delayed for approx. 20 ms every start.
• Use Pr.249 to enable/disable the earth (ground) fault detection at start. During operation, earth (ground) faults are detected
regardless of the Pr.249 setting.
238
5. PARAMETERS
5.7 (H) Protective function parameter
Name Initial value
0
page
page 297
Setting range
Earth (ground) fault
0 Not detected at start
1 Detected at start
2
579)
Description
Reset method
Not restricted
Restricted