Xylem Flygt FGC 421 - 7.10 Connect the HMI; 7.11 Connect a communication device

7.10 Connect the HMI
WS009298A
P2 SENSOR
L1
AC~
L2 L3
PE
DO 1
NO COM NO COM
DO 3
NO COM NC
+
24V OUT
T1 T2
P1 SENSOR
T1 T2 +
DI 1
+
MUTE
H
P2 H/O/A
O
RS485
+ IN
AI 1
STOP
FLO AT SWITCHES
STBY
+
ALARM 24V
H
P1 H/O/A
O
HIGH
1
2
3 4
HMI
5
DO 2
RS232
N
USB
A B GND
DUTY
Connect the HMI to the controller.
Terminal, controller Terminal, HMI Lead color Description
1 GND black Ground (earth)
2 CAN L blue CAN low
3 — — Shield
4 CAN H white CAN high
5 +24 V red power
7.11 Connect a communication device
P2 SENSOR
L1
AC~
L2 L3
PE
DO 1
NO COM NO COM
DO 3
NO COM NC
+
24V OUT
T1 T2
P1 SENSOR
T1 T2 +
DI 1
+
MUTE
H
P2 H/O/A
O
RS485
+ IN
AI 1
STOP
FLO AT SWITCHES
STBY
+
ALARM 24V
H
P1 H/O/A
O
HIGH
1
2
3 4
HMI
5
DO 2
RS232
N
USB
A B GND
DUTY
WS009662A
The communication interface supports Modbus or AquaCom directly over
RS-232, or through a modem.
1. Connect the RS-232 cable.
2. Connect the modem power cable to the 24V OUT terminal.
7 Electrical Installation
24 Flygt FGC 400 Installation, Operation, and Maintenance