2.2 Control elements
Fig. 5: DFXa control elements
1 "Modbus RTU" status LEDs
2 "Modbus RTU" socket
3 Device LEDs
Tab. 22: "Modbus RTU" status LEDs
Colour Cause
red
(flashing)
The Modbus does not function correctly.
yellow The Modbus is currently sending or
receiving.
green The Modbus PCB is supplied with
voltage.
Refer to the "Operating instructions for the solenoid metering pump
DULCO flex Control DFXa, DFXa" for the meaning of the device
LEDs
2.3
Electrical installation
CAUTION!
Pump may be damaged.
The panel plug on the housing may break off.
– Never connect a T-coupler directly to the
housing.
Only connect a cable directly to the housing.
Supplementary operating instructions for Modbus RTU
25