SOLENOID VALVES TEST
This test automatically tests the integrity of the
solenoid valve coils by actuating valves L1 through
L5 (or L6 if it is present). Press [=] to access. Next
the system displays a warning that output pressure
may be applied to the rear ports during this test
such that external equipment could be at risk.
Press [=] again to proceed and another opportunity
is presented to reconsider and cancel the test. To
continue press [=] a third time and the display will
indicate PASS or FAIL for each valve until all have
been tested. The system defaults to its previous
mode after reporting the condition of the last valve.
MANUAL VALVES TEST
Each solenoid valve can be tested individually or in
any combination with this procedure.
To use this capability press [=] and the warning
screen appears. Press [=] again to enable the test
and another opportunity is presented to cancel the
test. Once more press [=] and a screen map of the
solenoid valves appears as a row of five zeros
representing L1 through L5, and a zero or an X in
the sixth position to indicate the presence or ab-
sence of the L6 valve. In the display 0 signals that
a valve is OFF, and a 1 shows that it is ON. Use the
number keys 1 through 6 to toggle the equivalent
solenoid ON (1) and OFF (0).
SEQUENCES (Not available when used with the
HPCU option or PCS 400 V2.46 software)
The PCS 400 can store up to 64 separate user
generated sequences. Each sequence program is
identified as a number from 1 to 64. The operations
that can be applied to a sequence program are:
CREATE, LIST, EDIT, RUN and DELETE.
Each sequence can include up to 256 individual,
timed functions (steps) to be executed by the PCS
400. Each step within a sequence is numbered from
1 to 256. Each step can command any of the
following PCS 400 functions:
1. Enter any functional mode: STANDBY,
MEASURE, CONTROL, or VENT.
2. In CONTROL mode, command an output
pressure value within the control limits.
3. In CONTROL mode, hold the output pressure
(after it is STABLE) for a fixed time from 1 to
65535 seconds (over 18 hours), or hold that
pressure (PAUSE) until a manual input is
received. The same holding feature is also
available for STANDBY, MEASURE and
VENT modes without waiting for STABLE.
4. The last step command in a sequence can be
LOOP. This command immediately returns
the program to a lower numbered step within
the same sequence. LOOP sets up a perpetual
sequence which will continue until inter-
rupted either by an input from the keypad, or
a power down.
Operation
All SEQUENCE MODES are accessed through the
F2 function which is available from any operating
mode, STANDBY, MEASURE, CONTROL or VENT.
Each of the functions available under SEQUENCE
MODES are explained below. Note that F2 is key-
pad sequence [2nd] [.].
SEQUENCE MODES:
Press F2 ([2nd] [.]) to enter SEQUENCE
MODES. Scroll through the three menu items
with the [+] or [–] key until the desired selec-
tion is showing on the lower display line:
F2
SEQUENCE MODES: (USE +,-,=,CE)
RUN SEQUENCE
[+]
SEQUENCE MODES: (USE +,-,=,CE)
CREATE/DELETE SEQUENCE
[+]
SEQUENCE MODES: (USE +,-,=,CE)
LIST/EDIT SEQUENCE
[CE] will exit SEQUENCE MODES and return to
the previous operating mode, or press:
PROCEED WITH CAUTION!
This is both a powerful tool for
troubleshooting the pneumatic
system, and a dangerous capability
to mis-direct high pressures within
the internal and external system.
PCS 400 LOCAL OPERATION
www.mensor.com 3-11
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