PUMP_INTERFACE¶
Note
All the instances of the Function Block PUMP_INTERFACE must be called after the Function Block PUMP_STATION_CFG and before all other Function Blocks of the pumping library.
Function Block PUMP_INTERFACE
| Available as of PLC runtime system | V1.3 and above |
| Included in library | PUMP_AC500_V23.lib |
| Type | Function Block without historical values. |
Pump_Interface Function Block receives Pump ID, priority, follower mode and status of the drive and process this data. It gives out pump start,pump reference and pump actual runtime data. Follower drive behavior is defined using follower mode and follower reference and should be set to the same mode for all pumps of one pump station
Note
1.The follower modes in each of the three Function Blocks PUMP_INTERFACE should be set to the same mode.
2. Each pump must have a unique PUMP_ID.
ACS Drives behavior:
- When the ON command is withdrawn from the drive, AND it receives an ON command again (rising edge) before it has halted, the drive will not start. To restart the drive, the ON command needs to be made FALSE, let the drive come to halt and then made again TRUE.
This case can occur by following ways:
- Momentary power withdrawal from the drive, communication cable disturbance, or Pump_ON is made - FALSE then immediately TRUE again from the PUMP_INTERFACE e.g. during commissioning by manual operation in the engineering or by addition manual buttons around the application.
- This is not occurring in the normal operation. Nnevertheless it could be changed by selecting the drive on-the fly restart functionality, if deemed necessary and appropriate.