7. PROTECTION SYSTEMS .............................................................................................................................. 123

7.1

Description of blocks ........................................................................................................................... 123

7.1.1

"BL" Block due to water failure ........................................................................................................ 123

7.1.2

"BPx" Block due to fault on pressure sensor ................................................................................... 124

7.1.3

"LP" Block due to low power supply voltage ................................................................................... 124

7.1.4

"HP" Block due to high internal power supply voltage ..................................................................... 124

7.1.5

"SC" Block due to direct short circuit between the phases on the output terminal .......................... 124

7.2

Manual reset of error conditions ......................................................................................................... 124

7.3

Auto-reset of error conditions ............................................................................................................. 124

8. RESET AND DEFAULT SETTINGS .............................................................................................................. 125

8.1

General system reset ........................................................................................................................... 125

8.2

Default settings ..................................................................................................................................... 125

8.3

Restoring default settings.................................................................................................................... 125

Table 1: Technical specifications ..................................................................................................................... 71

Table 1a: Type of possible fault currents to earth ........................................................................................... 74

Table 1b: Minimum distance between the contacts of the power switch ......................................................... 75

Table 1c: Current absorption and thermal magnetic circuit breaker sizing for maximum power .................... 75

Table 2: Single phase line power cable section .............................................................................................. 76

Table 4: Section of 4-wire cable (3 phases + earth) ........................................................................................ 77

Table 5: Connecting the 4 - 20 mA pressure sensor ....................................................................................... 80

Table 6: Output contact specifications ............................................................................................................. 82

Table 7: Input specifications ............................................................................................................................ 83

Table 8: Input connection ................................................................................................................................ 85

Table 9: Button functions ................................................................................................................................. 86

Table 10: Access to menus ............................................................................................................................. 87

Table 11: Menu structure ................................................................................................................................. 88

Table 12: Error status messages on main page .............................................................................................. 90

Table 13: Status bar indications ...................................................................................................................... 91

Table 14: Troubleshooting ............................................................................................................................. 101

Table 15: Display of SM system monitor ....................................................................................................... 102

Table 16: Maximum regulation pressure values ............................................................................................ 104

Table 17: Pressure sensor settings ............................................................................................................... 108

Table 18: Unit of measurement system ......................................................................................................... 108

Table 19: Flow sensor settings ...................................................................................................................... 109

Table 20: Diameter of pipelines, FK conversion factor, minimum and maximum admissible flow ................ 112

Table 21: Default settings of inputs ............................................................................................................... 117

Table 22: Input configuration ......................................................................................................................... 117

Table 23: External float function .................................................................................................................... 118

Table 24: Auxiliary setpoints .......................................................................................................................... 119

Table 25: System enable and fault reset ....................................................................................................... 119

Table 26: Low pressure signal detection (KIWA) .......................................................................................... 120

Table 27: Default output settings ................................................................................................................... 120

Table 28: Output configuration ...................................................................................................................... 121

Table 29: Alarms ............................................................................................................................................ 123

Table 30: Block information ........................................................................................................................... 123

Table 31: Auto-reset of blocks ....................................................................................................................... 125

ENGLISH

INDEX OF TABLES