Troubleshooting guide

24
Set Up Screen
· Anti-Recycle – The operator can select from
the following AntiRecycle options: True, Ac-
cumulative, Modified, or Hot Starts. These
select the strategy used to prevent excessive
start/stop cycles of the compressor. Timers
and counters used to enforce anti-recycling
are adjusted and monitored in the Compres-
sor Timer Settings screen, reached from the
Menu screen. Help for the Timer Settings
screen explains how the different settings and
strategies operate.
· Compressor Control Via – Operator can
choose the method or mode of compressor
control. This determines which measured vari-
able is used in making loading (capacity con-
trol) decisions. The choice selected here de-
termines which setpoints are made available
for adjustment on the Compressor Control
Setpoints screen.
· Delete Operator – Operator can choose to
delete operator names from the authorized op-
erator listing. A name in the list is selected by
touching it. The selected name will be deleted
from the list when this button is pushed. If
you delete all the names (besides VILTER), be
sure you add at least one before leaving this
screen.
· Add Operator – The button opens a dialog
for entry of a new name/password pair. Noth-
ing (leaving the password text box blank) is a
legal password. The password is not ob-
scured as it is typed in, so untrusted parties
should not be permitted to view the screen
during entry. The password is not confirmed
with a repeat entry, so verify it visually before
pressing okay. Up to 25 name/password pairs
can be added. The Operator Name list box will
acquire a scroll bar when it fills.
·
Slide Non-Movement – Alarm enable and dis-
able buttons permit selecting whether an alarm
should be generated when failure of slides to
move is detected.
· Setpoint #1 Oil Pump #2 Oil Pump – For
single stage and high stage operation, part
time or normal oil pump fuction are used. The
oil pump shuts off after discharge pressure
has risen sufficiently to drive oil injection. Oil
pump operating mode is independently
settable for setpoint groups # 1 and # 2.
· Modbus Slave Network Address – When mul-
tiple MicroControllers are connected on a
Modbus Network, each controller must have
a unique address from the other
MicroControllers on the network. Duplicate
node addresses are not allowed. The node
address of each Vission is determined through
the SETUP menu. The MicroController that
will initiate all conversation on the network
MUST be defined as node 100 (this is defined
as the “master” node). All other node num-
bers should be in the range of 101 through
174.
This must be set when the extra special port
(Com4) is used to control or monitor the com-
pressor via Modbus. It also must be set when
the multi-compressor sequencing feature is
used. Even though Ethernet is used for the
comms, this address establishes the
compressor’s identity and role in the sequenc-
ing logic.
· Reset After Power Fail – When Auto is se-
lected, the compressor will attempt to restart
on powering up if it was running in ‘Auto’
when powered down and enabling conditions
are met. When ‘Manual’ is selected, the com-
pressor powers up into the ‘Stop’ mode and
an explicit command to run is required from
an operator or comms channel.
· Min Run Capacity – When enabled, the Mini-
mum Run Capacity setting on the Addition
Compressor Setpoints screen operates as de-
scribed in the help for that screen. When
multiple compressor sequencing is used, se-
lecting Disable here does not interfere with
use of the Min Run Capacity setting in the se-
quencing logic.