P
Po
ow
we
err LLE
ED
D
Indicates whether the unit is currently powered.
R
Re
em
mo
otte
e//LLo
occa
all LLE
ED
D
The REMOTE/LOCAL LED indicates whether the unit is in REMOTE or LOCAL mode.
If the REMOTE/LED is amber in color, or does not match any of the below
conditions, refer to Appendix D for troubleshooting.
S
So
olliid
d G
GR
RE
EE
EN
N:: The unit is in REMOTE mode.
S
So
olliid
d R
RE
ED
D::
The unit in LOCAL mode.
FFllaassh
hiin
ng
g R
RE
ED
D::
The unit is in LOCAL mode, but another networked unit performed
the switch. Take the unit out of LOCAL mode by pressing the
REMOTE/LOCAL button on the unit that performed the switch (it
will have a solid red LED).
R
Re
em
mo
otte
e//LLo
occa
all B
Bu
utttto
on
n
There are two modes of I/O unit operation: REMOTE and LOCAL. REMOTE mode
(indicated by a solid green LED) is for standard operation. LOCAL mode (solid red
LED) disables command outputs. This is for the operator’s safety during unit
maintenance. Use the REMOTE/LOCAL button to toggle between these modes.
P
Po
ow
we
err C
Co
on
nn
ne
ecctto
orr
Accepts an AC voltage input range of 100-240VAC, 50/60Hz, 15W, without manual
switching.
G
G--B
Bu
uss 1
1 &
& 2
2
Uses RS-485 cable to allow up to sixteen I/O units and one Voice Interface unit to
be linked, forming the G-Bus network.
C
CO
OM
M1
1
Used to connect a four-wire modem (using the cable supplied with the modem) or
to establish a direct connection from a PC to the I/O unit (using the null modem
cable provided with the I/O unit).
C
CO
OM
M2
2
Connects a dial-up modem (using a standard DB9 to DB25 serial cable) and is used
for uploading firmware or establishing a direct connection (using the supplied null
modem cable).
M
Me
ette
erriin
ng
g
Monitors analog DC voltages. On an I/O 8 unit, the metering and status channels
share the same DB37 connector (labeled Metering/Status).
S
Stta
attu
uss
Monitors high or low status inputs or contact closures.
C
Co
om
mm
ma
an
nd
d 1
1--8
8
Solid-state open collector outputs for channels 1-8, definable as momentary or
latching.
C
Co
om
mm
ma
an
nd
d 9
9--1
16
6
Solid-state open collector outputs for channels 9-16, definable as momentary or
latching. An I/O 8 unit has connections for commands 1-8 only.
CHAPTER 1: INTRODUCTION
11
CUSTOMER SUPPORT: 978-486-3711 • [email protected] • www.burk.com
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