Mitsubishi Electric FR-E800, Instruction Manual

Page: 239 / 484

238
11. (H) Protective Function Parameters
11.1 Motor overheat protection (electronic thermal O/L relay)
11
(H) Protective Function Parameters
11.1
Motor overheat protection (electronic thermal O/L
relay)
Set the current of the electronic thermal relay function to protect the motor from overheating. Such settings provide the optimum
protective characteristic considering the low cooling capability of the motor during low-speed operation.
Purpose Parameter to set Refer to page
To protect the motor from overheating Electronic thermal O/L relay
P.H000, P.H006,
P.H010, P.H016 Pr.9, Pr.51, Pr.607,
Pr.608
238
To set the overheat protection
characteristics for the motor
Free thermal O/L relay
P.H001 to P.H005,
P.H011 to P.H015 Pr.600 to Pr.604,
Pr.692 to Pr.696
238
To extend the life of the cooling fan
Cooling fan operation
selection
P.H100 Pr.244 245
To detect an earth (ground) fault at start
Earth (ground) fault detection
at start
P.H101 Pr.249 246
To detect a fault on the output side of
the inverter
Inverter output fault
detection enable/disable
selection
P.H182 Pr.631 247
To initiate an inverter protective
function
Fault initiation P.H103 Pr.997 248
To disable the I/O phase loss protective
function
I/O phase loss P.H200, P.H201 Pr.251, Pr.872 249
To restart using the retry function when
the protective function is activated
Retry operation P.H300 to P.H303 Pr.65, Pr.67 to Pr.69 250
To set the upper and lower limits of the
output frequency Maximum/minimum
frequency
P.H400 to P.H402 Pr.1, Pr.2, Pr.18 253
To prevent the motor from
overspeeding under torque control
Speed limit P.H410 to P.H412 Pr.807 to Pr.809 147
To avoid overdriving the motor during
speed control
Overdriving prevention P.H415 to P.H417
Pr.285, Pr.853,
Pr.873
130
To operate avoiding resonance points Frequency jump
P.H420 to P.H425,
P.H429 Pr.31 to Pr.36,
Pr.552
254
To limit the output current so that the
inverter protective function does not
activate
Stall prevention
P.H500, P.H501,
P.H600, P.H610,
P.H611, P.H630,
P.H631, P.M430,
P.T040
Pr.22, Pr.23, Pr.48,
Pr.66, Pr.154,
Pr.156, Pr.157,
Pr.277, Pr.858
256
To limit the torque during speed control Torque limit
P.H500, P.H700 to
P.H704, P.H710,
P.H720, P.H721,
P.H730, P.T040,
P.G210
Pr.22, Pr.801,
Pr.803, Pr.810,
Pr.812 to Pr.817,
Pr.858, Pr.874
114
To monitor for load faults
Load characteristics fault
detection P.H520 to P.H527,
P.H531 to P.H535
Pr.1480 to Pr.1492 261
To shut off output if the operation panel
disconnects
Overspeed detection level P.H800 Pr.374 266
To shut off output if the operation panel
disconnects
Deceleration check P.H880 Pr.690 131