Functions; Slc, Float-Switch-Controlled Option; Slc, Transducer-Controlled Option - Grundfos SLC Series Installation And Operating Instructions Manual

9. Functions

The SLC and DLC control panels include an easy-to-use
programmable logic unit that incorporates many timing and logic
functions.
The pump control panel features alarm and data screens to assist
with monitoring and troubleshooting. The up- and down-arrow
buttons allow you to navigate between the screens.
See the following table and screen navigation section for more
details.
Alarm screens will only be displayed when alarms are active. The
alarm screen shows the date and time when the alarm started.

9.1 SLC, float-switch-controlled option

Alarm screen Alarm text
1 High Level Alarm
2 Pump Fail Alarm
Data screen System data
3 Pump CT & ETM
4 High Lvl CT
5 Power Fault Counters
6 Pump Fault Counters

9.2 SLC, transducer-controlled option

Alarm screen Alarm text
1 Xducer Sig
2 High Level Alarm
3 Low Level Alarm
4 Pump Fail Alarm
Data screen System data
5 Current Tank Level
6 Pump CT & ETM
7 High Lvl CT & Low Level CT
8 Power Faults & Operating Hr
9 Transducer Signal
10 On/Off Level Settings
11 High/Low Level Settings
12 Transducer Input
13 Minimum Run Time
14 High Level Pump Run Time
15 High Level Alarm Delay
Description
High-level alarm
Pump-failure alarm
Description
Pump cycles are shown at the top of the screen and the pump run time beneath.
High-level alarm events
Power failures are shown at the top of the screen and the hours in service beneath.
Pump-failure events
Description
Is activated when the transducer signal is below 3 mA.
When lifted, this float switch activates the alarm indication on the screen and the audible
alarm.
When lowered, this float switch stops the pump and activates the indication on the
screen.
Is activated when the pump overtemperature sensor, seal-failure sensor or overload
relay has tripped.
Description
Liquid level in tank or pit in feet
The pump cycle counter is shown at the top of the screen and the pump run time in
minutes beneath.
The high-level alarm counter is shown at the top of the screen and low-level alarm
counter beneath.
The power failure counter is shown at the top of the screen and operating hours beneath.
"Raw value of transducer reading", in mA
Pump-on and -off level setpoints
High- and low-level alarm setpoints
Transducer range and offset settings
Minimum pump run time per cycle
Minimum high level pump run time per cycle
Elapsed time between high level point and alarm activation
21