Johnson Controls SNC Series User Manual

Table 6: Terminal wiring
Terminal block label Terminal labels Function, ratings, and
requirements
Determine wire size and
maximum cable length
Analog Output - Voltage Mode
(0–10 VDC)
10 VDC maximum output
voltage.
10 mA maximum output current.
Requires an external load of
1,000 Ohms or more.
Note: The AO operates
in Voltage Mode when
connected to devices
with impedances greater
than 1,000 Ohms. Devices
that drop below 1,000
Ohms may not operate as
intended for Voltage Mode
applications.
See Guideline C in Table 7.AO-#
Analog Output - Current Mode
(4–20 mA)
Requires an external load
between 0–300 Ohms.
Note: The AO operates
in Current Mode when
connected to devices with
impedances less than 300
Ohms. Devices that exceed
Ohm may not operate as
intended for Current Mode
applications.
See Guideline B in Table 7.
ANALOG
(Outputs)
AO-C# Analog Output Signal Common
for all Analog OUT terminals
Note: All Analog AO-C#
terminals share a common,
which is isolated from all
other commons.
Same as (Analog) AO-#.
BO-# Binary Output - 24 VAC Triac
(External Power)
Connects BO-# to BO-C# when
activated.
External Power Source:
30 VAC maximum output voltage.
0.5 A maximum output current.
1.3 A at 25% duty cycle.
Maximum 6 cycles/hour with
M9220-BGx-3.
40 mA minimum load current.
BINARY
(outputs)
BO-C# Binary Output Common (for
BO-# terminal)
Note: Each Binary Output
common terminal is
isolated from all other
commons, including other
Binary Output commons.
See Guideline C in Table 7.
F4-SNC Installation Guide10

Johnson Controls SNC Series Specifications

General

Brand	Johnson Controls
Model	SNC Series
Category	Controller
Language	English