Torque Limit Signal; Run Time/Power-On Time Over Signals - Hitachi SJ300 Series Instruction Manual

4–54
Using Intelligent Output Terminals
Torque Limit
Signal
Run Time /
Power-On Time
Over Signals
The Torque Limit output [TRQ] works in conjunction with the torque limit function covered in
the intelligent input section. The torque limit function limits the motor torque according to the
criteria selected by parameter B040. When torque limiting occurs, the [TRQ] output turns ON,
then going OFF automatically when the output torque falls below the specified limits. See
"Torque Limit" on page 4–37
Opt.
Symbol Function Name
Code
10 TRQ Torque Limit
11, 12, 13, 14, 15,
Valid for
AL0 – AL2
outputs:
B040... if B040=00 then
Required
B041, B042, B043, B044 are
settings:
required
Notes:
• The Torque Limit input [TL] must be ON in
order to enable torque limiting and its related
output, [TRQ].
SJ300 Series inverters accumulate the total hours in Run Mode (run time) and the total hours of
power-ON time. You can set thresholds for these accumulating timers. Once the threshold is
exceeded, an output terminal will turn ON. One use of this is for preventative maintenance. A
signal light or audible alert could signal the need for servicing, calibration, etc.
Opt.
Symbol Function Name
Code
11 RNT Run Time Over
12 ONT Power-ON Time
Over
in the intelligent input section.
Output
State
ON when the inverter is limiting torque
OFF when the inverter is not limiting torque
Example: (Requires output configuration—
see page 3–53.)
Inverter output
terminal circuit
See I/O specs on page 4–9.
Output
State
ON when the accumulated time spent in Run
Mode exceeds the limit (B034)
OFF when the accumulated time in Run Mode
is still less than the limit (B034)
ON when the accumulated power-ON time
exceeds the limit (B034)
OFF when the accumulated power-ON time is
less than the limit (B034)
Description
TRQ
14 13 11
CM2
15 12
+
RY
–
Description