Set Point Function; Service Function - Carrier 040-420 Installation And Service Manual

16
8
6
0
0
Example 7A - Using Demand Limit
(First Log On as Shown in Table 11)
KEYPAD DISPLAY
RESPONSE
ENTRY
FLD CFG
ERTYP 0
LSTYP 0
L S T Y P 1
DEMAND
D L S 2 1 0 0
DLS2 40
To Disable Demand Limit:
KEYPAD DISPLAY
RESPONSE
ENTRY
FLD CFG
E R T Y P 0
L S T Y P 1
L S T Y P 0
NOTE: Select 3 for Carrier comfort Network (CCN) load limiting
Select 4 for CCN demand limiting.
2 4 6
R E S E T R E F E R E N C E S I G N A L
Fig. 7 - 4-20 mA Cooling Temperature Reset
COMMENTS
Field configuration sub-
function of service function
Scroll past other elements
in the subfunction
is not enabled
is now enabled
for 2-stage switch control
Demand Limit set points
subfunction of set point
function
1 currently set
a t 1 0 0 %
reset to 60%
2 currently set
a t 1 0 0 %
2 reset to 40%
COMMENTS
Field configuration sub-
function of servicefunction
Scroll past other elements
in the subfunction
is enabled for
2-stage switch control
is now disabled
8
Example 7B - Using Demand Limit (4-20 mA)
(First Log On As Shown in Table 11)
KEYPAD DISPLAY
ENTRY RESPONSE
FLD CFG
E R T Y P 0
q 'n E N T R MH
LSTYP 0
L S T Y P 2
DEMAND
D M A X 1 0 0
D M A X 9 0
RMAX 20
R M A X 1 5
0
20
4
6
4 3
1 8 2 0
COMMENTS
Field configuration subfunction
of service function
Scroll past other elements in
the subfunction
is not enabled
is now enabled
for 4-20 mA signal control
Demand Limit set points
Maximum demand limit is 100%
Maximum demand limit is 90%
Maximum demand limit
reference is 20 mA
Maximum demand limit
reference is 15 mA
Minimum demand limit is 0%
Minimum demand limit is 20%
Minimum demand limit
reference is 4 mA
Minimum demand limit
reference is 6 mA