CPO-PC400-W/CPO-PC400-UW HVAC CONTROLLER
17
EN0B-0085 IE10 R0420
AUTOMATIC RESETTING FUSE
The 24V~ and 24V0 terminals at RS485-4 Interface have an automatic resetting fuse protection. The table below provides a
maximum quantity of each IO module type that can be powered from the 24V~ and 24V0 terminals at RS485-4 Interface. If
a mixture of IO modules is to be installed, use the table as a guide to determine if the IO modules can be powered from the
24V~ and 24V0 terminals at RS485-4 Interface or if a separate power source needs to be used.
NOTES:
—
The fuse will reset in one minute after the current is removed from the circuit.
—
* Refer to “Table 12 on page 8” for the maximum number of IO modules supported by the Bus.
—
** Rating assumes all inputs and outputs are used on the IO modules.
Table 27. Automatic Resetting Fuse Protection at RS485-4 Interface - Maximum Number of IO Modules
IO Module Type*
IO Module
Current Ratings
(AC)**
Controller Ratings 24V~/24V0 at RS485-4
3 A @ 20 C (68 F)
Ambient
2.4 A @ 40 C (104 F)
Ambient
2.1 A @ 50 C (122 F)
Ambient
XF821A
0.13 A
16
16
16
XF822A/XFR822A
0.15 A
16
16
14
XF823A
0.18 A
16
13
11
XF824A/XFR824A/
XFR825A
0.14 A
16
16
15
CPO-IO830,
XF830A, XFU830A
0.2 A
15
12
10
CP-EXPIO
0.625 A
4
3
3
CPO-DIO
0.625 A
4
3
3