Toledo Transducers MoniTTor N269, Installation And Operation Manual

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display goes blank.
Several operating modes can be selected in addition to the normal peak mode. Setup mode
disables all relays. Reverse mode shows any reverse loading taking place. A time delay starting
at the beginning of the load cycle can be set to use the load at a particular point the stroke. First
level mode is the peak load up to the time point. Second level mode is the peak load after the time
point. The B4 mode combines first level and normal peak mode. In addition, the average load for
the previous 16 strokes may be used for the process control. Finally, calibration is done in the
track mode.
The N269 contains numerous additional features. Normally a threshold is used to sense the
beginning of a cycle. Alternately a probe may be used. Another probe may be used to select a
point in the stroke rather than the time delay described above. The N269 can display strokes per
minute, the accumulated downtime (time since the last stroke), and the last alarm load value. The
highest load and the lowest load is also stored in the memory.
All setup parameters and counts are stored in a battery backed up memory which will hold the
data for years. A diagnostic routine indicates when the battery needs to be replaced. The
diagnostics also indicate probe and relay status in addition to the software version number.
The N269 also has a built in high speed computer interface. RS232 or RS422/RS485 can be
chosen with selectable speeds of from 300 to 76,800 baud. When using the RS422/RS485
interface up to 32 meters may be daisy chained on the same twisted pair cable. In this
configuration each meter has a unique address which the computer uses to poll it in turn. The
computer has all the capability that an operator has at the N269 keyboard. Information can be
fully up or down loaded to and from the computer.
II. OPERATION
A. USING THE DISPLAY AND KEYBOARD -
Refer to figure 5