Xylem Flygt FGC 421 - Function Description; Overview; Level Monitoring

5 Function Description
5.1 Overview
This chapter gives an overview of the main functions.
5.2 Level monitoring
Levels are monitored with float switches, an analog sensor, or with float switches
and an analog sensor.
WS009857A
1
2
3
5
4
6
A
B
1
2
7
6
Number A: Float switches B: Float switches and
analog sensor
1 Overflow Overflow This float switch is optional. The
overflow or the low-level float
switch is connected to the general-
purpose digital input. The input
must be configured for its
intended purpose.
2 High level High level This float switch is optional.
3 Start level, standby
pump
– This float switch is used in a two-
pump station.
4 Start level, duty pump – This float switch is always used
when the controller is configured
for float switches.
5 Stop level – This float switch is always used
when the controller is configured
for float switches.
6 Low level Low level This float switch is optional. The
overflow or the low-level float
switch is connected to the general-
purpose digital input. The input
must be configured for its
intended purpose.
7 – Analog sensor A pressure sensor or an Open Bell
sensor is used when the controller
is configured for an analog sensor.
5 Function Description
12 Flygt FGC 400 Installation, Operation, and Maintenance