Issue
Questions regarding specifications of Central I/O Inputs and Outputs
Product Line
EcoStruxure Building Operation
Environment
SmartStruxure I/O Modules:
- AO-8, AO-8-H
- AO-V-8, AO-V-8-H
- DI-16
- DO-FA-12, DO-FA-12-H
- DO-FC-8, DO-FC-8-H
- RTD-DI-16
- UI-8-AO-4, UI-8-AO-4-H, UI-8/AO-4-2, UI-8/AO-4-H-2
- UI-8-AO-V-4, UI-8-AO-V-4-H, I/O UI-8/AO-V-4-2, UI-8/AO-V-4-H-2
- UI-8-DO-FC-4, UI-8-DO-FC-4-H, UI-8/DO-FC-4-2, UI-8/DO-FC-4-H-2
- UI-16
Cause
Different I/O modules have varying electrical specifications
Resolution
Universal Input Specifications
Universal inputs can be configured as voltage, current, thermistor, resistance, digital or supervised inputs.
Voltage Input Specifications:
- Range: 0 to 10 VDC
- Resolution: 12-bit (UI-8 v2: 16-bit)
- Accuracy: ±(0.7mV + 0.2% of reading)
Current Input Specifications:
- Range: 0 to 20 mA
- Resolution: 12-bit (UI-8 v2: 16-bit)
- Accuracy: ±(0.03 mA + 0.4% of reading)
Resistance Input Specifications:
- 10 Ohm to 10 kOhm
- 10 kOhm to 60 kOhm
Thermistor Input Specifications:
- Range: -50 to 150° C (-58 to 302° F)
- Supported Types:
- 10k Type I (Continuum)
- 10k Type II (I/NET)
- 10k Type III (Satchwell)
- 10k Type IV (FD)
- 1.8k (Xenta)
- 10k Linearized (Satchwell DRT)
- 10k Type V (FD w/ 11k shunt)
- 1k (Balco)
- 20k (Honeywell)
- 2.2k (Johnson Controls)
Digital Output Specifications
Form C Relay:
- Terminals: Common (C), Normally Open (NO), Normally Closed (NC)
- Minimum Pulse Width: 100 ms
- Isolation: 1500 VAC (coil to contact)
- Cycle Life: ≥100,000 cycles
- Contact Rating: 250 VAC, 30 VDC, 3 A
Form A Relay:
- Terminals: Common (C), Normally Open (NO)
- Minimum Pulse Width: 100 ms
- Isolation: 1500 VAC
- Cycle Life: ≥100,000 cycles
- Contact Rating: 250 VAC, 30 VDC, 2 A
LED Indicators:
- Polarity: Reflects actual output state (ON = active, OFF = inactive)
- Color: Green
Analog Output Specifications
Analog outputs can be configured as voltage or current.
Voltage Output:
- Range: 0 to 10 VDC
- Resolution: 50 mV
- Accuracy: ±100 mV
- Terminals: Voltage (V), Return
- Minimum Load: Source 2 mA, Sink -1 mA
Current Output:
- Range: 0 to 20 mA
- Resolution: 0.1 mA
- Accuracy: ±0.2 mA
- Terminals: Current (I), Return
- Max Load: ≤650 Ohms
Supervised Input Specifications
Supervised inputs detect sabotage via resistor monitoring.
- Detected Conditions: Open circuit, short circuit, contact open/closed
- Circuit: 5V, 1 or 2 resistors
- Configurations: Series only, parallel only, series + switch
- Resistor Range: 1k to 10k Ohms (must be equal values)
- Note: Resistor value must be defined in the system.
RTD Input Specifications
RTD-DI-16 specifications are extensive.
Refer to the official datasheet: RTD-DI-16 Specification Sheet
