BENSHAW RSi H2 Series - Motor over Heat Sensor

Parameter Descriptions
201
890053-00-02
5.8.8 PRT-34 Motor Over Heat Sensor
A motor thermistor (PTC) can be connected to the inverter to monitor and protect the motor. The
source of current through the PTC can be provided by the 20mA output (AO1) of the inverter. The
voltage from the PTC can be applied to the inverter input terminals V1 or I2 (set as V2). Values for
monitoring and protection are in percent (%). The inverter will trip on a “Thermal Trip” fault when
the PTC input goes above the set fault level (PRT-36).
Group
Code
Name
LCD Display
Parameter Setting
Setting
Range
Unit
PRT
34
Selecting inverter operation
after detection of motor
overheat
Thermal-T
Sel
0
1
2
None
Free-Run
Dec
0–2
-
35
Selecting the input of the PTC
sensor
Thermal In
Src
0
1
Thermal In (V1)
V2 (I2 terminal)
0–1
36
Fault level of the PTC sensor
Thermal-T
Lev
50.0
0.0–100.0
%
37
Fault area of the PTC sensor
Thermal-T
Area
0
1
Low
High
0–1
OUT
01
Analog output 1 item
AO1 Mode
14
Constant
0–18
02
Analog output 1 gain
AO1 Gain
100
0–100
%
Motor Overheat Protect Sensor Input Detail Settings
Code
Description
PRT-34
Thermal-T Sel
Sets the inverter operation when motor overheat (Thermal Trip) is
detected.
Setting
Function
0
None
Does not operate when motor overheat is detected.
1
Free-Run
When motor overheat is detected, the inverter output
is blocked, and the motor will free-run (coast).
2
Dec
When motor overheat is detected, the motor
decelerates and stops.
PRT-35
Thermal In Src
Selects the terminal when the PTC sensor signal is connected to the
inverter.
Setting
Function
0
Thermal In
Configure the PTC sensor connection to terminal V1.
Set SW3 to the right as TI.
1
V2
Configure the PTC sensor connection to terminal I2.
Set SW4 to the right as V2.
PRT-36
Thermal-T Lev
Configure the fault level (in %) of the PTC sensor.
PRT-37
Thermal-T Area
Setting
Function
0
Low
Thermal Trip fault when the PTC sensor input is
lower than PRT-36.
1
High
Thermal Trip fault when the PTC sensor input is higher
than PRT-36.
IN-20
Thermal Monitor
Monitor PTC level at IN-20.
OUT-01 AO1 Mode
OUT-02 AO1 Gain
Used when supplying the constant current to the PTC sensor from the
analog output terminal (A01).