Toledo Transducers MoniTTor N269, Installation And Operation Manual

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DISPLAY with all channels lit once again, displaying what was displayed when they
went blank during the last data entry. Now another channel may be selected and data
entered, other data displayed, or load may be displayed once again by pressing "RESET".
DATA ENTRY DISPLAY may only be changed via the "ENTER" key or the "RESET"
key. "ENTER" enters the value and returns the display to DATA DISPLAY. "RESET"
changes the display to LOAD DISPLAY, continually showing the load in the operating
mode selected.
4. KEY SEQUENCES
Data in the N269 meter is accessed from the keyboard using meaningful key sequences.
A key sequence may consist of one, two or three keys pressed consecutively. Whenever
a key is pressed, the data displayed depends not only on the key pressed but also on the
last two keys pressed. To access data requiring key sequences of only one or two keys it
may be necessary to press the "RESET" key before starting the key sequence.
B. USING THE PROCESS CONTROL FEATURES - Refer to figure 7
1. THE SETPOINTS AND ZONES
Four setpoints divide the load range into 5 process control zones. These setpoints are
displayed in the channel 3, 4, 5, & 6 displays whenever a load is displayed in channel 0.
Thus during normal operation the process control setpoints are displayed continuously.
Normally the setpoints are set such that setpoint #3 is greater than setpoint #4 which is
greater than setpoint #5 which is greater than setpoint #6. Setpoints #3 and #4 are
considered high setpoints and can be changed using the same key sequences used to
change other high setpoints. Setpoints #5 and #6 are considered low setpoints and are
changed the same way other low setpoints are changed.
All process control functions are based on the peak load in channel 0. REject
occurs when the load is above setpoint #3 or below setpoint #5. Therefore a
GOod part is when the load is between setpoints #3 and #6. The "DEcrease fill"
function occurs when the load is above setpoint #4. The "INcrease fill" function
occurs when the load is below setpoint #5.
These four setpoints are always displayed when loads are displayed except in the
event of an alarm which stops the press. When the press is stopped, "STOP" is displayed
in the channel 4 display and the channel 5 display is blank.
2. THE RELAYS
There are four process control relays in the N269 in addition to the normal shutdown
relay. These relays are called the REject relay, the GOod part relay, the DEcrease fill
relay and the INcrease fill relay. Each relay has a timer (0-99.99 seconds) which