Details of Detection
This device can select three detection modes. Which detection mode is to be used, depends on
the type of machine.
•
Single mode
This mode is for single stroke, single die headers. The screen display is limited to one
channel only.
•
Double mode
This mode is used for such machines which perform two work with punches 1 and 2 in one
stroke. In this case, detection is made for two punches at the same time, using one sensor
(2-die & 2-blow, 2-die & 3-blow). The device is factory set in this mode.
•
Multi model (multi-stage type)
This is the detection mode for multi-state headers and formers. Detection is performed using
two sensors. With one each sensor installed at the left and right sides of the slide, fault
detection is made based on the inclination of the slide.
These detection modes can be selected by system setting. (Refer to Section “Details of System
Setting”.)
Slowdown Detection and External Timing
•
Slowdown detection
The TMG-1200 has a slowdown detection function. When the rpm of the machine has
decreased due to machine trouble, this function stops the machine. The rpm when the
machine was started in the continuous mode is kept in memory. When the rpm becomes
lower than that at the start by more than the set value, a fault signal is produced and the
screen display shows that the machine has stopped due to slowdown. The function is used
mainly for prevention of motor burnout. The set table range is from –5% to –49% in units of
1%. Slowdown detection is factory set in the off state. This function is set by system setting.
(Refer to Section “Details of System Setting”.)
•
External timing
This device has an external timing input. In the case of double detection, detection is made
for punches 1 and 2, using one sensor. Therefore, this input is used to make it recognized by
an external signal that the timing is for punch 1.
By turning on (short circuiting) the external timing input with the timing for punch 1 as
mentioned above, this device discriminates between punches 1 and 2. (Set the time, during
which the input stays on, to more than 20 msec.) In case punches 1 and 2 are different in
load, the punch of smaller load is automatically set as punch 1, and the punch of larger load
as punch 2, without connecting the timing signal.
Page 13
TMG-1200 Instruction Manual
