Delta VFD-M-D series User Manual

Chapter 5 Parameters|VFD-M-D Series
5-68 Revision Jan. 2007, MDE2, SW V1.05
7 - 07 Over-Torque Detection Time (oL2) Unit: 0.1
Settings 0.1 to 60.0 sec Factory Setting: 0.1
 This parameter sets the time for how long over-torque must be detected before “oL2” is
displayed.
7 - 08 Electronic Thermal Overload Relay Selection (oL1)
Factory Setting: 01
Settings 00 Operate with a Standard Motor (self-cooled by fan)
01 Operate with a Special Motor (forced external cooling)
02 Operation disabled
 This function is used to protect the motor from overloading or overheating.
40
20
60
80
100
25 50
100 150
Motor rated freqency%
M
o
t
o
r
r
a
t
e
d
c
u
r
r
e
n
t
%
Self-cooled by fan
25 50 100 150
40
20
60
80
100
M
o
t
o
r
r
a
t
e
d
c
u
r
r
e
n
t
%
Motor rated freqency%
Forced external cooling
7 - 09 Electronic Thermal Characteristic Unit: 1
Settings 30 to 600 sec Factory Setting: 60
 The parameter determines the time required for activating the I
2
t electronic thermal protection
function. The graph below shows I
2
t curves for 150% output power for 1 minute.
1
2
3
4
5
60Hz or more
50Hz
10Hz
5Hz
0
20
40
60
80
100
120
140
160
180 200
Operation
time(min)
Load
factor (%)

Delta VFD-M-D series Specifications

General

Brand	Delta
Model	VFD-M-D series
Category	Controller
Language	English