LINK Systems OmniLink 5000 - Manual (Page 78)

6.8
Lube Type 002: Recirculating Oil with Static Inputs
Input #33 Low Lube Level/Press(stop if input = 0 volts)
Input #34 High Lube Pressure (stop if input = 0 volts)
Input #35 Held closed flow sensor (stop if input = 0 volts)
Output #21 (OR-5) Lube Fault (opens if fault occurs)
This is a "static" lubrication system. If any input goes to a stop condition, the press top stops. If the input
remains in a stop condition after the press stops, the lube system output will turn off. This output will
remain off and further stroke initiation is prevented until all inputs return to the run state. The output is
intended to be used to turn off the main motor in the event of a lube system fault. The timers associated
with the lube system are not used and should be set to zero.
Lube Type 003: Recirculating Oil with Flow Rate Sensor
Input #33 Low Lube Level/Press(stop if input = 0 volts)
Input #34 High Lube Pressure (stop if input = 0 volts)
Input #35 Pulsing Flow Rate Sensor (cycles)
Output #21 (OR-5) Lube Fault (opens if fault occurs)
This is a continuous running lubrication system with a flow rate sensor that must periodically cycle to
indicate proper lube flow. When power is turned on, the press control starts an internal flow rate timer
set by the “Flow Rate (Running)” parameter. If the flow rate sensor input changes state (goes from low
to high or high to low), before the timer expires the interval is reset. If the input fails to change within the
programmed time a lube system fault is generated and the message “No Lube Flow” is displayed. This
error condition will automatically clear and the present running status will return to “Ready To Stroke”
when proper flow is sensed. In situations where the lube pump must be manually started, the press control
will display “No Lube Flow” after power is applied until the lube system is started and proper flow is
detected.
In some applications the cycle time of the flow rate input is too short or too erratic to effectively monitor
one interval. The “Minimum # of Pulses” parameter can be used to time a specific number of transitions.
A typical example would be a press that when the lube pump is On, input #35 stays low for one second
and high for one second (10 transitions in 10 seconds). If the “Minimum # Pulses”=010 and “Flow Rate
(Running) time”=015 seconds, the press control will consider the lube system to be functioning correctly
as long as at least 10 transitions are detected within 15 seconds. These are the only timing parameters
used by this lube system and all others should be set to 000.
If lube flow malfunctions or one of the static inputs (#33, #34) indicate a stop condition, a lube system
fault is generated and the press top stops. If the static input remains in a stop condition or the flow rate
sensor continues to remain unchanged after the press stops, the lube system output OR-5 will turn Off.
This output is intended to stop the main motor and will remain Off and further stroke initiation prevented
until all static inputs return to the run state and the flow rate sensor begins to cycle correctly.
Lube Type 004: Pulsed Lube with Flow Rate Sensor
Input #33 Low Lube Level (stop if input = 0 volts)
Input #34 Lube Pressure Fault (stop if input = 0 volts)
Input #35 Lube Cycle Limit Switch (cycles)