YASKAWA G7 Series User Manual

6-54
 Motor Overheating Protection Using PTC Thermistor Inputs
Perform motor overheating protection using the thermistor temperature resistance characteristics of the PTC
(Positive Temperature Coefficient) built into the windings of each motor phase.
Related Parameters
Parameter
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control Methods
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
L1-03
Motor
Overheat
Alarm
Operation
Selection
Sets operation selection when the
motor temperature analog input
(H3-09 = E) exceeds the OH3
alarm level (1.17V)
0: Ramp to Stop
1: Coast to Stop
2: Fast-Stop
3: Alarm Only
0 to 3 3 NoAAAAA
MOL Thm
Input
L1-04
Motor
Overheat
Fault
Operation
Selection
Sets stopping method when the
motor temperature analog input
(H3-09 = E) exceeds the OH4 fault
level (2.34V).
0: Ramp to Stop
1: Coast to Stop
2: Fast-Stop
0 to 2 1 NoAAAAA
MOL Filter
Time
L1-05
Motor
Temperature
Input Filter
Time
This parameter adjusts the filter on
the motor temperature analog input
(H3-09 = E). Increase to add
stability, decrease to improve
response.
0.00
to
10.00
0.20secNoAAAAA
MOL Filter
Time
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YASKAWA G7 Series Specifications

General

Series	G7
Frequency	50/60 Hz
Output Voltage	Matches Input Voltage
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit
Communication	RS-485, Modbus, DeviceNet, Profibus, Ethernet
Safety	Safe Torque Off (STO)
Operating Temperature	-10°C to 50°C
Humidity	5% to 95% (non-condensing)
Cooling Method	Fan Cooled
Enclosure Rating	IP20
Storage Temperature	-20°C to 65°C