SKG3 Gas Fired Humidifier
Installation Instructions and User Manual
34
Stage 9 – BACnet
®
Interface Set-up
Important Note
This page describes the BACnet
®
interface set-up.
“BACnet
®
interface’’
option is available only upon request.
Dip Switch
Adjustment for
RS-485
BACnet
®
Port
BACnet interface - Fig. 47
Mode & Baud Rate
Setting
Mode & baud rate dip switch setting is located next to the Control panel P.C.B. To
access it, remove the front panel plate.
Location of BACnet interface dip switch - Fig. 48
BACnet
®
interface Dip
switch setting:
(Fig 50)
Switch #1 : Mode selection
OFF = Mode Operational
(factory setting)
ON = Mode Configuration
(linked with Com Port menus #601 & 602)
Switch #2 & 3 : Baud rate selection
Baud rate
Switch #2
Switch #3
9600
OFF
OFF
19200
ON
OFF
38400
OFF
ON
76800
(factory setting)
ON
ON
See also the
BACnet
®
communication module user guide
supplied.
1
3
2
4
5
6
7
8
9
1
2
3
4
5
6
ANLG OUT
1
2
3
4
5
X
6
7
8
9
DUCT
HUMID.
ROOM
HUMID.
CTRL
DEMAND
INTER
LOCK
PD
SWITCH
HI-LIM
24 VAC
700MA
MAX.
TB1
TB2
J
P
2
J
P
1
P1
RS-232
A
+
B
-
TB3
RS-485
COM
NO
NC
COM
NO
NC
ALARM
FAN
DS1
Dip switch for adjustment of RS-485
TB3
RS-485 Connection
Bacnet Port (2 wires twisted pair)
1 2 3
R
-
R
+
L
A
S
T
DS1
O
N
1 2 3
R
-
R
+
L
A
S
T
O
N
Pull Up disable
120 Ohm terminaison
(last node) disable
Pull down disable
R
-
R
+
L
A
S
T
1
2
3
O
N
Pull Up enable
Pull down enable
120 Ohm terminaison (last node) enable
Factory set at
OFF position
Control panel P.C.B.
BACnet
®
interface P.C.B.
BACnet
®
interface Dipswitch
LCD
Display
1
2
3
O
N
5
4
6
Mode selection
Baud rate selection
Not used