6.3.10 Inverter Pre-overheat Warning
This feature outputs a warning if the inverter temperature exceeds the temperature set
by the user in Pr-77. The user can set up the operation for when the warning is
generated before four types of overheating and output warning with the multi-function
relay.
Pre-overheat warning
temperature
Pre-overheat warning
operation setting
Multi-function relay 1 item
Multi-function relay 2 item
Pre-overheat Warning Operation Setting Details
Pr.77 Pre-
overheat warning
temperature
Set the pre-overheat warning temperature.
Pr.78 Pre-
overheat warning
operation setting
0: None No pre-overheat warning operation
1: Warning If the pre-overheat warning temperature is exceeded,
warning message is displayed on the keypad and inverter will operate
normally.
2: Free-Run If the pre-overheat warning temperature is exceeded, a
pre-overheat trip occurs and free-run will stop.
3: Dec If the pre-overheat warning temperature is exceeded, a pre-
overheat trip occurs and deceleration will stop.
OU.31, 33 multi-
function relay 1,
2
38: Pre-overheat warning Signal is output if a pre-overheat warning
or trip occurs.