Specifications
42
Broadcast Configuration — The 30XW chiller is ca-
pable of broadcasting time, date, and holiday status to all ele-
ments in the CCN system. In the stand-alone mode, broadcast
must be activated to utilize holiday schedules and adjust for
daylight saving time. If the chiller is to be connected to a CCN
system, determine which system element is to be the network
broadcaster to all other system elements. Broadcast is activated
and deactivated in the BRODEFS Table. It is accessible from
Touch Pilot™ display (Config BRODEFS) or through Net-
work Service Tool. It is not accessible through Navigator™
display.
Only one element should be configured as a broadcaster. If
a broadcast is activated by a device that has been designated as
a network broadcaster, then broadcasted time, date, and holiday
status will be updated over the CCN system. If broadcast is en-
abled, a broadcast acknowledger must also be enabled. The
acknowledger cannot be the same machine as the broadcasting
machine.
ACTIVATE — The Activate variable enables the broadcast
function of the ComfortLink controls. If this variable is set to 0,
this function is not used and holiday schedules and daylight
savings compensation are not possible. Setting this variable to
1 allows the machine to broadcast and receive broadcasts on
the network. The following information is broadcast: the time
with compensation for daylight savings, date, and holiday flag.
Set this variable to 2 for stand-alone units that are not con-
nected to a CCN. With this configuration, daylight saving time
and holiday determination will be done without broadcasting
through the bus. This variable can only be changed when using
the Touch Pilot™ display, ComfortVIEW™ software, or
Network Service Tool. This variable cannot be changed with
the Navigator™ display.
To configure this option with the Touch Pilot™ display:
BROADCAST ACKNOWLEDGER — This configuration
defines if the chiller will be used to acknowledge broadcast
messages on the CCN bus. One broadcast acknowledger is
required per bus, including secondary buses created by the use
of a bridge. This variable can only be changed with the Touch
Pilot display, ComfortVIEW software, or Network Service
Tool. This variable cannot be changed with the Navigator™
display.
To configure this option with the Touch Pilot display:
0
10
20
30
40
50
60
70
80
90
100
12 14 16 18
20
mA Demand Limit Signal
% Demand Limit
mA For 0% Demand Limit,
DMZE
mA For 100% Demand Limit,
DMMX
0
2
46
8 10
Fig. 24 — 4 to 20 mA Demand Limit (Capacity)
a30-4831
200
0
400
600
800
1000
1200
1400
1600
1800
2000
0
mA Signal
Compressor Current
mA For 100%
Demand Limit,
DMMX
mA For 0% Demand Limit,
DMZE
24 6 8 10 12 14 16 18 20
Fig. 25 — 4 to 20 mA Demand Limit (Compressor Current)
a30-4832
DISPLAY NAME PATH LINE NO. VALUE
Activate Config BRODEFS 1
Range = 0 to 2
Default = 2
DISPLAY NAME PATH LINE NO. VALUE
Broadcast acknowledger Config Ctlt-ID 10 Yes