Delta EB3000 Series User Manual page 273

Chapter 8 Descriptions of Parameter SettingsEB3000
 The action of electronic thermal relay depends on the setting for Pr.04-53.
When Pr.04-53 is set to 0 (using standard motor):

When the output current of the drive is higher than 150% of the motor rated current (refer to the
motor rated current % corresponded to the motor rated frequency in the motor cooling curve
with shaft-fixed fan), the drive starts to count the time. The electronic thermal relay acts when
the accumulated time exceeds Pr.04-54.
When Pr.04-53 is set to 1 (using inverter motor):

When the output current of motor drive is higher than 150% of the motor rated current (refer to
the motor rated current % corresponded to the motor rated frequency in the motor cooling curve
with independent fan), motor drive starts to count the time. The electronic thermal relay acts
when the accumulated time exceeds Pr.04-54.
 If the motor's rated current (Pr.00-12) is not set, then set 90% of the drive's rated current (Pr.07-
01) as the default value of this parameter.
 The actual electronic thermal relay action time adjusts according to the drive output current
(shown as the motor loading rate %). The action time is short when the current is high, and the
action time is long when the current is low. Refer to the following diagram:
04-55
IGBT Overheat Warning (oH1)

VF
Control Mode
Settings
Models / Phase Frame
230V /
One-phase
460V /
Three-phase
SVC FOCPG
0.0–110.0°C
Model Name
VFD022ED21B
A
VFD037ED21B
VFD040ED43B
A VFD055ED43B
VFD075ED43B
VFD110ED43B
B VFD150ED43B
VFD185ED43B
OH (Overheating) Temperature Table
8-04-10
Default: varies with drive
FOCPM
identity code
oH1 Fault oH1 Warning
Level Level
85
90
90
oH1 Fault
90
Level-5
95
Pr.04-55
100
110
110
oH1 Reset
Level
OH1 Warning
or Level -5