Omron SYSDRIVE 3G3RV Series User Manual

6
-
50
K
KK
K 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.
nRelated Parameters
nPTC Thermistor Characteristics
The following diagram shows the characteristics of the PTC thermistor temperature to the resistance value.
Fig 6.40 PTC Thermistor Temperature-Resistance Value Characteristics
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f
with
PG
Open
Loop
Vec-
tor
LCD Display
L1-03
Alarm operation selection
during motor overheating
Set H3-09 to E, and select the operation when the
input motor temperature (thermistor) input
exceeds the alarm detection level (1.17 V).
0: Decelerate to stop
1: Coast to stop
2: Emergency stop using the deceleration time in
C1-09.
3: Continue operation (H3 on the Digital Opera-
tor flashes).
0 to 33 NoAAA
Mtr OH Alarm Sel
L1-04
Motor overheating opera-
tion selection
Set H3-09 to E, and select the operation when the
motor temperature (thermistor) input exceeds the
operation detection level (2.34 V).
0: Decelerate to stop
1: Coast to stop
2: Emergency stop using the deceleration time in
C1-09.
0 to 21 NoAAA
Mtr OH Fault Sel
L1-05
Motor temperature input
filter time constant
Set H3-09 to E, and set the primary delay time
constant for motor temperature (thermistor) inputs
in seconds.
0.00 to
10.00
0.20 sNo AAA
Mtr Temp Filter
Tr: Temperature threshold value
Tr
Tr+5TrTr 5
550
1330
Resistance (ohms)
Class F
150
Class H
180
Temperature

Omron SYSDRIVE 3G3RV Series Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3RV Series
Category	Inverter
Language	English