Blue-White F-2000 – Solvent Weld PVC Tee Fitting - Manual (Page 7)

F-2000 Page 7
OPTION 1. RELAY SETPOINTS ARE ASSIGNED TO THE RATE MODE.
When the setpoint mode selection screen is assigned to RATE, the following program screens are available:
PROGRAMMING SCREEN PROGRAMMING SCREEN FUNCTION
Setpoint - RATE - 1 High alarm flow RATE trigger value. (Factory default value = 000001)
Setpoint - RATE - 2 High alarm flow RATE release value. (Factory default value = 000001)
Setpoint - RATE - 3 Low alarm flow RATE trigger value. (Factory default value = 000001)
Setpoint - RATE - 4 Low alarm flow RATE release value. (Factory default value = 000001)
Setpoint - RATE - 5 Alarm reset delay time from 000 - 999 seconds. (Factory default value = 000)
The relay setpoints may be assigned in one of three ways:
Choice 1. High Alarm Only
The High Alarm Trigger Setpoint energizes the relay at a high flow rate value (high flow alarm). A single
trigger value is assigned to a flow rate value greater than the normal flow rate. The relay will energize
when the flow rate increases to the programmed value. In this option, the low trigger and release values
are not used and should be programmed to a value of zero.
Choice 2. Low Alarm Only
The Low Alarm Trigger Setpoint energizes the relay at a low flow rate value (low flow alarm). A single
trigger value is assigned to a flow rate value less than the normal flow rate. The relay will energize when
the flow rate decreases to the programmed value. In this option, the high trigger and release values are
not used and should be programmed to a value of zero.
Choice 3. High and Low Range Alarm Setpoints
The Range Alarm Setpoints energize the relay at both the high and low flow rate values (out-of-range
alarm). Both the high and low trigger values must be assigned creating an acceptable range of flow. The
relay will energize when the flow rate increases or decreases out of the acceptable range.
The relay action may be programmed in three ways:
Choice 1. Manual Unlatching requires the user to press the clear setpoints button to unlatch the relay (turn off the
alarm). The relay is energized and latched when the trigger value is reached and remains energized and
latched until the clear setpoints button is pressed.
To enable the feature, program the trigger and release values to the same value.
Choice 2. Automatic Unlatching requires the programming of a separate release point. When the setpoint is
triggered, the relay will automatically unlatch when this release value is crossed.
To enable the feature, program a different trigger and release value. The high release value must be less
than the high trigger value. The low release value must be greater than the low trigger value.
Choice 3. The Relay is Deactivated
To deactivate the relay, program all trigger and release values to zero.
NOTE: When latched, regardless of how the relay action is programmed, the relay may be unlatched manually by
pressing the front panel “clear setpoints” button. However if there is still an alarm condition (high or low trigger
value is exceeded), the relay will immediately re-latch. An alarm reset delay time can be programmed which will
delay the re-latching of the relay even though the alarm condition still exists. If the relay is being used to switch an
audible alarm, this feature allows for temporarily silencing the alarm, allowing time to affect repairs, without
actually disabling the alarm feature. The programmable time range is from 0-999 seconds.