Johnson Controls F4-SNC - Connecting input and output terminals

Figure 7: Supply power wiring (24 VAC transformer) Table 3: Power source connection detail
Callout Description
1 Brown wire (COM)
2 Orange wire (24 VAC)
3
Wires from Johnson Controls 24 VAC, Class Power
Transformer
Connecting input and output terminals
The SNC25151-0x/x supports up to 40 hard-wired onboard I/O points, 25 inputs and 15 outputs.. The SNC1612x supports
up to 28 hard-wired onboard I/O points, 16 inputs and 12 outputs.
Table 4: Onboard I/O points
SNC Total I/O
Universal
Inputs (UI)
Binary Inputs
(BI)
Configurable
Outputs (CO)
Analog
Outputs
(AO)
Binary
Outputs (BO)
SNC25151-0x/x 40 14 11 4 4 7
SNC16121-0x 28 10 6 4 4 4
Note: The SNC has two sets of 24+ and common
terminal block connections amongst the output
pins (Label numbers 19, 20 and 25, 26). The 24 V
connection (Label numbers 20 and 26) is the same as
the 24V~ HOT connection (Label number 02) and the
COM connections (Label numbers 19 and 25) are the
same as the 24VAC~ COM connection (Label number
01). These extra power connections can be used to
jumper power for switched high (externally sourced)
or switched low (externally sourced) Triac loads.
Table 5: Input and output terminals
Type of Point Options
Universal Inputs
• Voltage Analog inputs (0-10 VDC)
• Current Analog inputs (4-20 mA)
• Resistive Analog inputs (0-2k Ohm)
- RTD: 1k Nickel, 1k Platinum, or A99B SI
- NTC: 10k Type L or 2.225k Type 2
• Dry contact Binary inputs
Binary Inputs
• Dry contact maintained
• Pulse counter mode (100 Hz)
Configurable
Outputs
• Voltage Analog outputs (0-10 VDC)
• Binary Outputs (24 VAC Rated Triac)
Analog Outputs
• Voltage Analog outputs (0-10 VDC)
• Current Analog outputs (4-20 mA)
Binary Outputs 24 VAC Rated Triac
Terminal functions, ratings, requirements, and wiring guidelines
F4-SNC Installation Guide 7