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O O p p e e r r a a t t i i n n g g P P r r o o c c e e d d u u r r e e s s
Table 4. The overview screens
Primary Overview Module Screen
Primary/Secondary Overview Circuit Screen
Overview Module
Module En/Dis
Pressing this button enables or disables a module. It is
used for testing and maintenance purposes. If module
is disabled, it's excluded from primary control
compressors sequence. Not accessible for 'user.'
Module Status
Possible options:
1. Module ON. Module is ready to run.
2. OFF by Schedule. Module operates according to
predefined schedule and is currently off as
scheduled.
3. OFF by DI. Module is off by opened state of PLC DI1.
4. OFF by Keypad. Module is off by Module En/Dis
button.
5. OFF by Alarm. Module is locked out by one of the
major alarms.
6. OFF by Primary. Module is switching between
control states Primary / Secondary / Stand-alone.
7. OFF by System. Module is off by one of the System
Off conditions.
8. Man Mode. Module is in manual mode.
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Secondary Overview Module Screen
Module Cntrl Status
Possible options:
1. Primary. Module acts as a primary module. Primary
module performs temperature control for either
heating or cooling loads. It also acts as a Supervisor
when communicating with secondary modules and
defines how many modules need to run its
compressors in order to satisfy heating or cooling
controlled temperatures.
2. Secondary. Module acts as a secondary module.
Conditions for the module to be a secondary
module:
a. Its PLC has been assigned IP address from
secondaries addresses range
b. It's communicating with primary module
c. Primary module exists on the network, other
words Primary PLC meets primary module
conditions (see Primary Status below).
d. Stand-alone. Module doesn't meet either
primary module or secondary module
conditions.
Primary Status
Applies to primary PLC only. Possible options:
1. Primary ON. All primary modules conditions are
satisfied by module.
ARTC-SVX001B-EN
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