Overload Warning
The overload warning function causes the inverter to output an overload warning if the load is too
large, before it detects an overload trip.
• This is useful to prevent mechanical damage to transfer machines, etc. due to overweighed loading,
or stoppage of transfer lines due to an overload, through the use of the overload protection function
of the inverter
.
• To output this signal, allocate “38: OL (Overload warning)” or “37: OL2 (Overload warning 2)” to Out-
put Terminal [DO1] Function Selection (3005Hex-15Hex) and Output Terminal [ROA, ROB] Function
Selection (3005Hex-1CHex). (Two types of overload warning signals can be output.)
• When using “38: OL (Overload warning),” set the overload warning detection level and overload
warning detection timer for each of 1st and 2nd control. When using “37: OL2 (Overload warning 2),”
set Overload early warning 2 Level (OL2) (3005Hex-23Hex) and Overload early warning 2 Detection
Timer (OL2) (3005Hex-24Hex) regardless of 1st and 2nd control.
Parameter No. Function name Data
Default da-
ta
Unit
Common settings for OL and OL2
301FHex-56Hex
Overload Warning Detection
Condition Selection (OL1, OL2)
0: Output during accelera-
tion/deceleration and con-
stant-speed operation
1: Output only during con-
stant-speed operation
1 -
Overload warning OL (Detection level and detection timer are set for each 1st and 2nd drive controls.)
3005Hex-26Hex
1st Overload Early Warning De-
tection Level
0.00: Disable
0.01 to 176.0
# Setting range from 1%
(HHD) to 200%(ND) of the
rated inverter current.
21.00 A
3005Hex-27Hex
1st Overload Early Warning De-
tection T
imer / Low Current de-
tection level (OL, LOC)
0.01 to 600.00 10.00
s
3005Hex-38Hex
2nd Overload Warning Detec-
tion Level
*1
0.00: Disable
0.01 to 176.0
# Setting range from 1%
(HHD) to 200%(ND) of the
rated inverter current.
21.00 A
3005Hex-39Hex
2nd Overload Early Warning
Detection T
imer
*1
0.01 to 600.00 10.00
s
3005Hex-15Hex/
3005Hex-1CHex
Output Terminal [DO1] Function
Selection/
Output Terminal [ROA, ROB]
Function Selection
38: OL (Overload warning)
- -
Overload warning OL2 (Common to 1st and 2nd drive controls.)
3005Hex-23Hex
Overload early warning 2 Level
(OL2)
0.00: Disable
0.01 to 176.0
# Setting range from 1%
(HHD) to 200% (ND) of the
rated inverter current.
21.00 A
3005Hex-24Hex
Overload early warning 2 Detec-
tion T
imer (OL2)
0.01 to 600.00 10.00
s
8 Other Functions
8-73
M1 Series EtherCAT Type User’s Manual (I670)
8-8 Functions Related to Protection, Warning and Various Output Signals
8
8-8-1 Current Limit/Overload Prevention Control/Overload Warning
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