4. Installer Settings
Once the unit is mounted and wired, the installer will need to set parameters as required for the particular
installation. Before applying power to the unit the DIP switches will need to be set.
4.1 DIP Switch Settings
The default position of the DIP switches, is all four set to ON. For the majority of installations this will be
the correct setting. However if several immerSUN devices are being cascaded, then the DIP switches will
need to be set accordingly, see table below.
Default settings show in
Italics
S1
S2
Cascade Position Select
Notes
OFF
OFF
1
st
Slave
Clamp not used, control is via master
OFF
ON
2
nd
Slave
Clamp not used, control is via master
ON
OFF
3
rd
Slave
Clamp not used, control is via master
ON
ON
Master Unit
Clamp is required
S3
Termination Resistor Select
ON
RS485 termination resistor ENABLED
Set to ON if this is at the end of the communication chain. If
the unit is in the middle of the chain, set to OFF. Where
there are only two devices connected, set both to ON.
OFF
RS485 termination resistor DISABLED
S4
Clamp Burden Resistor Select
ON
Internal burden resistor ENABLED
OFF
Internal burden resistor DISABLED
Use external resistor (for supporting alternative clamps)
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