Power Connection - KMC Controls FlexStat BAC-19 Series Installation Manual

(See Illustration 11.) For the relay
circuit, the phase side of the AC
should be connected to the SC
terminal. FlexStat relays are NO, SPST
(Form "A").
NOTE: Unused analog outputs can be
converted to binary outputs by right-
clicking the output object in KMC
software and selecting Convert to
Binary Object.
CAUTION
Do not attach a device that draws
current exceeding the FlexStat's
output capacity:
• Maximum output current for
individual ANALOG/UNIVERSAL
outputs is 100 mA (at 0–12 VDC) or
100 mA total for all analog outputs.
• Max. output current is 1 A for
individual RELAYS at 24 VAC/VDC
or a total of 1.5 A for relays 1–3 or
4–6.
CAUTION
Relays are for Class-2 voltages (24
VAC) only. Do not connect line voltage
to the relays!
CAUTION
Do not mistakenly connect 24 VAC to
an analog output ground. This is not
the same as a relay's (SC) Switched
Common. See the backplate's
terminal label for the correct terminal.

POWER CONNECTION

CAUTION
To avoid damage from ground loops
and other communication issues in
networked MS/TP model FlexStats,
correct phasing on MS/TP network
and power connections on ALL the
networked controllers is critically
important!
NOTE: Follow all local regulations and wiring
codes.
BAC-19xxxx FlexStat Installation Guide
2. Connect a 24 VAC, Class-2 transformer (or
24 VDC power supply) to the power terminals
(see Illustration 12):
A. Connect the neutral side of the transform-
er to the common (–/C) terminal
B. Connect the AC phase side of the trans-
former to the phase (~/R)terminal
Transformer
DC
Power
Supply
Illustration 12—Power Terminals
NOTE: Connect only one controller to each
transformer with 14—22 AWG copper
wire.
NOTE: For information on principles and
good practices when connecting
transformers, see
24-Volt Power Application Note
(AN0604D).
NOTE: To connect 24 VDC (–15%, +20%)
instead of VAC power:
• Connect 24 VDC to the
terminal.
• Connect GND to the
terminal.
NOTE: Use either shielded connecting cables
or enclose all cables in conduit to
maintain RF emissions specifications.
NOTE: If power is applied to the terminals,
the FlexStat will power up when it
is reinstalled on the backplate. See
Mounting on page
6
⊥ ⊥
.
∼ ∼
Phase
Phase
24 VAC
Common
Neutral
FlexStat
24 VDC
Phase
Common
Ground
Tips for Connecting
∼ ∼
(phase/R)
⊥ ⊥
.(common)
2.
926-019-02C
.