Code
Y98
Bus link function (Mode selection)
Y99
Loader link function (Mode selection)
6.2 Application example
Following there is an example describing how to switch a motor from comercial-power operation to inverter-operation (and vice
versa) using an internal automatic switch sequence called ISW50 function.
Components needed to develop this application:
- Motor (pump or fan motor)
- 3 relays (the relays will be connected to 3 contactors)
- 1 thermal relay (optional)
- FRENIC-Eco inverter (FRN-F1)
When the primary contactor SW52-1 is opened the inverter will not be powered on. Therefore, and in order to keep the
inverter control circuit alive, an auxiliary input voltage is needed from R0/T0 auxiliary input terminals.
Circuit diagram and configuration:
Commercial power contactor
SW88
Inverter primary contactor
SW52_1
Name
Frequency command
0: Follow H30 data
1: Via field bus option
2: Follow H30 data
3: Via field bus option
Frequency command
0: Follow H30 and Y98 data
1: Via RS485 link (Loader)
2: Follow H30 and Y98 data
3: Via RS485 link (Loader)
FRENIC
Eco
Chapter 6: Function codes and application example
Data setting range
RUN command
Follow H30 data
Follow H30 data
Via field bus option
Via field bus option
RUN command
Follow H30 and Y98 data
Follow H30 and Y98 data
Via RS485 link (Loader)
Via RS485 link (Loader)
Thermical relay
Inverter secondary contactor
SW52_2
Default setting
0
0
21