14
BAS-SVX084A-EN
Wiring Installation
b. The Status LED illuminates solid green when the controller is finished booting.
Note:
If the sequence completes as described, the controller is properly booted and ready for the
application code. If the Status LED flashes red, a fault condition exists.
Guidelines
•
Use 18 AWG copper wire (recommended) for power and connect to terminals XFRM 24 Vac and
.
•
Use U.L. listed, Class 2 power transformer, 20.4 to 27.6 Vac (24 Vac nominal).
•
Size the transformer to provide adequate power to the Symbio 210 controller (24 VA maximum)
and outputs (maximum 12 VA for each binary output).
Important:
A dedicated 24 Vac, Class 2 transformer is recommended to power the Symbio 210
controller. When powering multiple controllers from one transformer, polarity must
be maintained. Terminal 24 Vac is designated positive (+) and terminal
is
negative (-) to the unit casing ground. It is important to include power consumption
in the calculations.
•
The power consumption for cooling-only Series F Models (VariTrac™ and VariTrane™) is up to
26 VA. Refer to
for information about calculating actual VA requirements.
Table 5.
Calculating actual VA requirements
Item
Sub
VA Draw Per I/O (24 Vac)
Maximum Total VA Draw (24
Vac)
Symbio
210 Board
Symbio
210 (No I/O)
8 VA
Symbio 210e (No I/O)
9.5 VA
3 x AI
(a)
0 VA per AI
0 VA
2 x UI
(a)
0 VA per UI
0 VA
1 x PI
0.3 VA per PI
0.3 VA
1 x BI
0.1 VA per BI
0.1 VA
2 x AO
1.1 VA Per AO
2.2 VA
5 x BO (TRIAC)
0.1 VA Per TRIAC (No Load)
0.5 VA
Subtotal for Symbio 210 with all I/O used
11.1 VA
Subtotal for Symbio 210e with all I/O used
12.6 VA
24 Vdc Supply
200 mA
(b)
IMC and I/O
1 VA Per 20 mA DC
10.0 VA
250 mA USB Host
3 VA Per USB Host
3.1 VA
Total for Symbio
210 fully loaded
24.2 VA
Total for Symbio
210e fully loaded
25.7 VA
Binary Outputs (TRIAC)
5 x BO (TRIAC)
0.5 A @ 24 Vac = 12 VA per BO
60.0 VA
