BAC-19xxxx FlexStat Installation Guide
6 926-019-02C
(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.
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
∼∼
.
T
Phase
Neutral
FlexStat
Phase
Common
Phase
Common
Transformer
24 VAC
T
Ground
DC
Power
Supply
24 VDC
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
.
NOTE:
To connect 24 V
DC (–15%, +20%)
instead of VAC power:
• Connect 24
VDC
to the
∼∼
(phase/R)
terminal.
• Connect
GND
to the
⊥
⊥
.(common)
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
.
