Demand Limit (Ccn Loadshed Controlled) - Carrier AQUASNAP 30RAP010-150 Controls, Start-Up, Operation, Service, And Troubleshooting

DEMAND LIMIT (CCN Loadshed Controlled) — To con-
figure Demand Limit for CCN Loadshed control set the De-
mand Limit Select (Configuration
Then configure the Loadshed Group Number (Configura-
 
tion RSET SHNM), Loadshed Demand Delta (Configu-
 
ration RSET SHDL), and Maximum Loadshed Time
 
(Configuration RSET SHTM). See Table 19.
The Loadshed Group number is established by the CCN
system designer. The ComfortLink controls will respond to a
Redline command from the Loadshed control. When the
100
80
60
100% CAPACITY AT 4 mA
40
20
0
0
KEYPAD
MODE
ENTRY
CONFIGURATION
ENTER
*Seven items skipped in this example.
 
RSET DMDC) to 3.
75% CAPACITY AT 12 mA
2 4 6
DEMAND LIMIT SIGNAL – 4 - 20 mA INPUT
Fig. 28 — 4 to 20-mA Demand Limiting
Table 19 — Configuring Demand Limit
KEYPAD
SUB-MODE
ENTRY
DISP
ENTER
UNIT
ENTER
OPT1
ENTER
OPT2
ENTER
CCN
EXV.A
EXV.B
MM
RSET
ENTER
DMDC*
SHNM
Redline command is received, the current stage of capacity is
set to the maximum stages available. Should the loadshed con-
trol send a Loadshed command, the ComfortLink controls will
reduce the current stages by the value entered for Loadshed
Demand delta. The Maximum Loadshed Time is the maximum
length of time that a loadshed condition is allowed to exist. The
control will disable the Redline/Loadshed command if no
Cancel command has been received within the configured
maximum loadshed time limit.
8 10 12
ITEM DISPLAY ITEM EXPANSION
CRST X Cooling Reset Type
X Demand Limit Select
DM20 XXX % Demand Limit at 20 mA
Loadshed Group
XXX
Loadshed Demand
SHDL XXX%
Maximum Loadshed
SHTM XXX MIN
DLS1 XXX %
DLS2 XXX %
44
50% CAPACITY AT 20 mA
14 16 18
Default: 0
0 = None
1 = Switch
2 = 4 to 20 mA Input
3 = CCN Loadshed
Default: 100%
Range: 0 to 100
Default: 0
Number Range: 0 to 99
Default: 0%
Delta Range: 0 to 60%
Default: 60 min.
Time Range: 0 to 120 min.
Demand Limit Default: 80%
Switch 1 Range: 0 to 100%
Demand Limit Default: 50%
Switch 2 Range: 0 to 100%
20
COMMENT