Toledo Transducers MoniTTor N269, Installation And Operation Manual

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determines how long the relay stays on when activated.
The REject relay operates at the end of the stroke if the channel 0 load was in either the
high-reject zone or the low-reject zone. The GOod part relay operates at the end of the
stroke if the channel 0 load was in the good zone. These two relays will never operate at
the same time. Any load signal is either a reject or a good part so one of these two relays
will operate on every stroke.
The DEcrease relay has a 0-9 preset counter associated with it. In order to operate the
DEcrease fill relay the channel 0 load must be in the decrease zone for the same number
of strokes in a row as is set on the DEcrease preset counter. For example, if the
DEcrease preset counter is set at 3 then the channel 0 load must be in the decrease zone
3 strokes in a row for the DEcrease relay to operate. Any load signal above setpoint #4
is in the decrease zone. Thus it is possible to have the DEcrease relay operate when
either the REject relay or the GOod part relay is operating.
The INcrease relay has a 0-9 preset counter associated with it. In order to operate the
Increase fill relay the channel 0 load must be in the increase zone for the same number of
strokes in a row as is set on the INcrease preset counter. For example, if the INcrease
preset counter is set at 4 then the channel 0 load must be in the increase zone 4 strokes in
a row for the INcrease relay to operate. Any load signal below setpoint #5 is in the
increase zone. Thus it is possible to have the INcrease relay operate when either the
REject relay or the GOod part relay is operating.
The DEcrease and INcrease relays only operate at the end of a stroke. They are
programmed to never operate at the same time even if the #4 and #5 setpoints are
overlapped. If ever a situation arises in which both would logically operate, the N269
operates the DEcrease fill relay and does not operate the INcrease fill relay.
Another 0-9 preset counter exists for use with the shutdown relay. If the channel 0 load
is in the reject zone (either high or low) a certain number of times in a row the shutdown
relay opens to stop the press. Thus if this REject preset counter is set at 5 then at the end
of 5 consecutive rejects the press will shut down.
In the event of a shutdown alarm, the DEcrease and INcrease relays will not operate. If
the alarm was due to a high overload then the press was shut down immediately in the
middle of the stroke. If this was the case, the REject and GOod part relays would not
operate. If the alarm was a precount alarm ( end of batch), a difference alarm, or a
consecutive reject alarm the REject or GOod part relay will operate at the end of the
stroke normally.
a. SETTING THE RELAY TIMERS-- TIME (relay) 0 (data) ENTER
Each process control relay has a 0-99.99 second timer which determines how long the
relay stays on. Initially upon power up this time is set to 0. When the time is 0 the relay