40
Wiring a Triggering Device Into the TLM
The TLM remains in the auto-zeroing mode of operation
until an external probe is applied.
The auto zero feature is important for accurate readings.
Over time the press frame will slightly change in its
structure. This may be due to temperature or press
frame tension. The TLM will compensate for the slight
change. It will readjust the zero base line. This zero base
line is the no-load value of the press. With a consistent
zero value, the tonnage output readings should remain
accurate.
When the probe turns on, the TLM opens the window
to read a load signal. In peak mode the load level rises
to the highest value.
When the probe turns off, the peak level is reset and
the auto-zeroing function is resumed (notice the dotted
line in Figure 6).
Tonnage Load Monitor (optional)
Installation
The timing of the probe should be such that it turns on
just before the machine begins generating a load (140°)
and remains on until the load is removed (240°) and the
TLM outputs have been read.
The Analog Output Connector
The analog outputs are provided on a 6 pin Phoenix
connector for easy access. The voltage level at these
outputs ranges from 0V at no load, up to approximately
9V at maximum.
This output voltage level is directly related to the gain
setting of each channel.
Figure 6
The recommended timing of the probe
vs.
The loading on the machine
Analog Voltage Output Connector
Pin 1 = Ch 1 out
Pin 2 = Common
Pin 3 = Ch 2 out
Pin 4 = Ch 3 out
Pin 5 = Common
Pin 6 = Ch 4 out
Figure 7
The analog output connections provided
for interfacing to other peripherals
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