Trane Symbio 500 - Wiring Requirements and Power Budget; Wiring Requirements; Providing Low-voltage Power for I;Os; Calculating Power Consumption Rules

BAS-SVX090B-EN
27
Checkout Procedure Measurement
Expected Value
Step 1
Measure AC voltage across the
resistive termination.
Vac ≈ 0.0 V
AC voltage will affect further
measurement.
Step 2
Measure DC voltage across the
resistive termination.
Vdc ≈ 0.0 V
DC voltage will affect further
measurements.
Step 3
Measure the resistance across the
resistive termination.
Wiring Requirements
NOTICE
Equipment Damage!
Failure to follow instructions below could result in damage to the controller, power transformer,
or input/output devices due to inadvertent connections to power circuits.
Remove power to the controller before making input/output connections.
Maximum Wire Lengths
Type Inputs Outputs
Binary 1,000 ft (300 m) 1,000 ft (300 m)
0–20 mA
1,000 ft (300 m) 1,000 ft (300 m)
0–10 Vdc
300 ft (100 m) 300 ft (100 m)
Thermistor/Resistive
300 ft (100 m) Not Applicable
Notes:
1. All wiring must be in accordance with the NEC and local codes.
2. Use only 18–22 AWG (1.02 mm to 0.65 mm diameter), stranded, tinned-copper, shielded, twisted-pair wire. Shielding is optional for
binary inputs and analog 0 - 20 mA inputs.
3. 24 Vdc output wiring distances are dependent on the receiving unit specifications. Output wiring must comply with the receiving
unit’s wiring specifications.
4. DO NOT run input/output wires or communication wires in the same wire bundle with AC power wires.
Providing Low-voltage Power for I/Os
The Symbio 500 controller can provide low-voltage power to the inputs/outputs. More than one input or
output can receive power from a given screw terminal as long as the total amount of power consumed
does not exceed the terminal’s limit. The Symbio controller requires 24 Vac, UL-listed, Class 2 power
transformer. This section provides information about checking power budget consumption for the
Symbio controller in an un-powered state.
Calculating Power Consumption Rules
• Total available power is determined by the transformer rating. Use the following table as a guideline
for the Symbio controller power consumption.
• Reserve 12 VA to power XM30 expansion modules.
• The total of the 24 Vac output and inputs should not exceed the remaining power. Refer to the
following table for Power Budgets.
Wiring