Firmware Version 3/4.31.37
7.4 SWING ARM CONFIGURATION
Perform the following steps when configuring two bays to share one or more swing arms.
Designate one of the bay MultiLoad II RCUs to be the swing arm secondary RCU. It does not matter which RCU
is chosen as the secondary. To make a RCU the secondary, go to the designated RCU and enter the program
mode. Select the Configuration menu and then select RCU Setup. In the RCU Setup menu, find the parameter
labeled Swing Arm Secondary. Enable this parameter and then exit the program mode. It will not be necessary
to set this parameter again, if additional swing arms are added to a bay in the future. Go to the primary RCU and
ensure that the Swing Arm Secondary parameter is disabled.
Choose one of the bay MultiLoad II RCUs to configure; it does not matter which bay is configured first. For
purposes of this discussion, the primary MultiLoad II RCU will be configured first. Enter the program mode of the
primary RCU. Select the Configuration menu and then select Equipment Setup. Enter the Preset menu. Select a
preset that will be configured as a swing arm. In the Preset menu find the parameter labeled Swing Arm FCM#.
Press Enter. Press Next to enable the parameter. Enter a number that represents the Flow Control Module
(FCM) that will contain the input port for the bay's swing arm detector switch.
After entering an FCM#, enter a number that represents the input port that will receive the detector switch signal.
Select any available port.
Configure other Preset menu parameters as necessary. Any Preset level I/O assignments that must be made will
have to be assigned to one of the swing arm's FCMs, which will be on the common MultiLoad II RCU
communication circuit. Otherwise, the same I/O function will have to be configured on both MultiLoad II RCUs.
Make a note of the swing arm FCM port assignments, since they will be used in the secondary MultiLoad II RCU.
Exit the Preset menu and return to the Equipment Setup menu.
Select and enter the Meters menu. Select the preset that has been assigned to the swing arm that is being
configured. Select Meter #1. The first parameter is Flow Control Module #. Enter a number that represents the
FCM that will be used to operate the swing arms control valve and monitor the swing arm's flow meter input.
Ports two and three will be reserved for the upstream and downstream solenoid outputs respectively. Port four
will be reserved for flow meter pulse input A. Port five is available for flow meter input pulse B or for any other
function associated with the swing arm. Any unused ports on this FCM must be reserved for this swing arm's use
only, since the FCM will not be available to either bay all of the time.
Configure other Meters menu parameters as necessary. Any Meter level I/O assignments that must be made will
have to be assigned to one of the swing arm's FCMs, which will be on the common MultiLoad II RCU
communication circuit. Otherwise, the same I/O function will have to be configured on both MultiLoad II RCUs.
Make a note of the swing arm FCM port assignments for entry in the other secondary MultiLoad II RCU. Exit the
Meters menu and return to the Equipment Setup menu.
Configure Component level parameters for the swing arm. In cases where the swing arm component pumps are
common to other load arms in the bay, Pump Run and Pump Status assignments should be made to FCMs that
are dedicated to a single MultiLoad II RCU. That means that the pump-related I/O assignments would have to be
configured on both MultiLoad II RCUs. If a component pump is only needed for the swing arm, however, it may
be more efficient to assign the pump-related I/O to the swing arm FCM ports. Block Valve Open and Block Valve
Status assignments must be made to swing arm FCM ports, which will be on the common MultiLoad II RCU
communication circuit.
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