Tmon - Hitachi SJ700-2 Series Instruction Manual

Variable name

Tmon

Torque
monitoring
- Explanation
This variable can be used to monitor output torque of the motor operated by the inverter. The data
monitored with this variable corresponds to the data monitored by the torque monitoring function (d012).
This variable is read-only.
- Sample program: Program to increase the inverter output frequency when motor output torque is low
(to automatically accelerate the motor)
(Code area [Code Window])
：
LOOP UL(00)=
U(10)=
if
if
if
if
if
if
goto
LBL1 SET-Freq=
goto
LBL2 SET-Freq=
goto
LBL3 SET-Freq=
goto
LBL4 SET-Freq=
goto
LBL5 SET-Freq=
goto
LBL6 SET-Freq=
LBL7 goto
：
(Data area [Data Window])
U(00) = 100
U(01) = 80
U(02) = 70
U(03) = 60
U(04) = 50
(Parameters)
A001 = 07
A004 = 100(Hz)
Range of values
-300 to 300
Tmon
abs UL(00)
U(10) <= U(04)
U(10) <= U(03)
U(10) <= U(02)
U(10) <= U(01)
U(10) <= U(00)
U(10) > U(00)
LBL7
10000
LBL7
8000
LBL7
7000
LBL7
6500
LBL7
6000
LBL7
6000
LOOP
: Set torque of 100% in variable "U (00)".
: Set torque of 80% in variable "U (01)".
: Set torque of 70% in variable "U (02)".
: Set torque of 60% in variable "U (03)".
: Set torque of 50% in variable "U (04)".
Chapter 5 Instruction Words
Default Unit
- %
: Fetch the motor output torque data.
: Convert the data to an absolute value.
then LBL1 : When torque is 50% or less, change the
output frequency to 100 Hz.
then LBL2 : When torque is 60% or less, change the
output frequency to 80 Hz.
then LBL3 : When torque is 70% or less, change the
output frequency to 70 Hz.
then LBL4 : When torque is 80% or less, change the
output frequency to 65 Hz.
then LBL5 : When torque is 100% or less, change the
output frequency to 60 Hz.
then LBL6 : When torque exceeds 100%, change the
output frequency to 60 Hz.
5 - 41
Data size Attribute
Unsigned
Readable
1-word data