amiad Omega 13.5K, Руководство по установке и эксплуатации

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OMEGA F ilt ers – Ins tal lati on & Oper atio n Manu al Pag e 4 of 8
Control Philosophy
Control Concept – Single Filter
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Optional Faults and Alarms:
a. Alarm when Analog sensor is out of range.
b. Warning when Inlet Pressure too low – applicable when PT1 exists.
c. Flush Valve Fails to open or to close – applicable when Valve Actuator is equipped with limit
switches.
Note 1: Proper determining of “X” is critical in order to prevent mechanical damage in case of limit
switch failure.
“X” value should be the actual time it takes for the transmission gear to move from bottom to
top or top to bottom limit 1 second. The idea is that in case of motor over travelling,
the motor will stop by this timer and not by the O.L. protector.
“X” value need to be verified for each individual motor and updated after each time of limit
switch adjustment.
3. Flush Cycle Stages:
1. Request for flushing
2. Output 01 (Cycle On) turns On
3. One second delay (programmable via HMI)
4. Output 04 turns ON – Flush valve XV1 Open.
5. 3 seconds delay (programmable via HMI)
6. Output 05 turns ON – CU1 activating the motor CCW until the signal from TLS (Top Limit Switch)
turns OFF.
7. Output 05 turns Off
8. Output 04 turns Off – Flush valve XV1 Closes
Please note:
In the next flush cycle, step 6 will be:
Output 06 turns ON – CD1 activating the motor CW until the signal from BLS (Bottom Limit Switch)
turns OFF.
4. Reset:
Pressing on the Reset Push-button causes:
a) Stop the flush cycle – Flushing valve closes and the suction scanner moves downward to
the bottom limit switch position.
b) Clear Fault mode.
5. Pause:
Signal in input 04 will stop the flush cycle (same as Reset).
As long as this input is ON, the system will not enter a flush cycle.
6. Continuous Flushing mode:
In continuous flushing mode the flush valve remains open.
The filter’s motor stops for one second at each limit switch before turning rotation direction.
Continuous flushing mode is used in heavy TSS loads conditions in order to maintain stable flow at low
DP and to avoid high frequency of valve operation.
It is recommended to use the continuous mode for limited duration in order to prevent high wear of the
filter internals.
a. Manual operation of Continuous mode:
Start / Stop Latch Push-Button (Hardware or HMI) to start and stop continuous flushing mode.
Flushing will continue until STOP command or until end of pre-determined duration value set in
the HMI (60 – 180 minutes recommended).