©2008 Ingersoll Rand Company Page 11
compressor. The controller will still compare its
discharge pressure to the discharge level high
warning value. If the discharge pressure reaches
this value, the controller will automatically
unload and issue a high discharge pressure
warning. This function can also be performed by
the IEO using an ISCI-II module connected to
terminal XO4 pins 1 and 7. The X4I and X8I
controllers can also be used by the S3 controller
by simply connecting to the X07 RS485-1
Network connector. To use this feature you must
enable the software in Parameter P03 RC (See
remote control).
Remote Load/Unload [Enh] – this single
normally opened contact is wired into terminal
XO4 pins 1 and 8 and allows the user to
remotely load or unload his or her compressor. If
the Remote Load Enabled contact is closed and
the Remote Load/Unload contact is open the
unit will run unloaded. If the Remote
Load/Unload contact closes, the unit will load.
An IEO can be installed with an ISCI-II module
and wired into the above-mentioned terminal
and pins. To use this feature you must enable
the software in Parameter P03 RC (See remote
control).
Motor PTC [Enh] – This is a positive
temperature coefficient (PTC) switch that is
embedded into the motor and it is used to detect
the temperature of the motor windings. This PTC
is wired into the controller at terminal XO4 pins 1
and 9. If the motor windings get to hot the
To Next Page
Loading...
