Demand Limit - Carrier AQUAFORCE 30XA080-500 Controls, Start-Up, Operation, Service And Troubleshooting Instructions

6
5
4
Cooling Reset
Deg. Value
(DGRC)
3
2
1
0
0
Switch Controlled (Capacity Based) — If using 2-step De-
mand Limit control, an Energy Management Module must be
installed. One-step Demand Limit control does not require the
Energy Management Module. To configure Demand Limit for
switch control, three parameters for 1-step switch control must
be configured. For 2-step control, four parameters must be
configured. The parameters are: the type of Demand Limit
Selection (Demand Limit Type Select, DMDC), the setting
for Switch Limit Set Point 1 (Switch Limit Setpoint 1, DLS1),
The setting for Switch Limit Set Point 2 (Switch Limit Set-
point 2, DLS2), and Current Limit Select (Current Limit Se-
lect, CUR.S). Current Limit Select must be set to NO.
To configure this option with the Touch Pilot™ display:
DISPLAY NAME PATH

Demand Limit


Config USER
Type Select

Switch Limit
Setpoints SETPOINT
Setpoint 1

Switch Limit
Setpoints SETPOINT
Setpoint 2

Current Limit
Config USER
Select
To configure this option with the Navigator™ display:
ITEM ITEM EXPANSION
DMDC Demand Limit
Configuration
Select
Switch Limit
DLS1 Setpoints
Setpoint 1
DLS2 Switch Limit
Setpoints
Setpoint 2
Current Limit
CUR.S Configuration
Select
In the following example, 2-step demand limit based on
capacity is desired with the first switch closure limiting the
capacity to 60%. The second switch closure is to limit the
Current No Reset Value
(CRV1)
5
Fig. 27 — 4 to 20 mA Temperature Reset
LINE
VALUE
NO.
1 (Switch Control)
24
Default = 0 (None)
33 Default = 100%
(Not required
34 for 1-Step)
Default = 100%
No
30
Default = No
PATH VALUE
 RSET SWITCH
Default = NONE

MISC Default = 100%
(Not required

MISC for 1-Step)
Default = 100%

NO
OPTN
Default: NO
10
mA Signal
capacity to 40%. Demand Limit Switch 1 is 60% and Demand
Limit Switch 2 is 40%.
TOUCH PILOT DISPLAY
Display Name
Demand Limit Type Select
Switch Limit Setpoint 1
Switch Limit Setpoint 2
Current Limit Select
Switch Controlled (Current Based) — If using 2-step de-
mand limit control, an Energy Management Module must be
installed. One-step demand limit control does not require the
Energy Management Module. Four parameters for 1-step
switch control must be configured. For 2-step control, five
parameters must be configured. The parameters are: the type
of Demand Limit Selection (Demand Limit Type Select,
DMDC), the setting for Switch Limit Set Point 1 (Switch Lim-
it Setpoint 1, DLS1), the setting for Switch Limit Set Point 2
(Switch Limit Setpoint 2, DLS2), the Current Limit Select
(Current Limit Select, CUR.S), and the Compressor Current
limit at 100% signal, (Current Limit at 100%, CUR.F).
To configure this option with the Touch Pilot display:
DISPLAY NAME
Demand Limit
Config
Type Select
Switch Limit
Setpoints
Setpoint 1
Switch Limit
Setpoints
Setpoint 2
Current Limit
Config
Select
Current Limit
Config
at 100%
43
Current Full
Reset Value
(CRV2)
15 20
a30-4482
NAVIGATOR DISPLAY
Value Item
1 DMDC SWITCH
60% DSL1 60%
40% DSL2 40%
No CUR.S NO
LINE
PATH VALUE
NO.
1 (Switch Control)

USER 24 Default = 0
(None)

SETPOINT 33 Default = 100%
(Not required

SETPOINT 34 for 1-Step)
Default = 100%

Yes
USER 30
Default = No

Default =
USER 31
2000.0 Amps
Value