Stage 9 -Electrical Control Connections - Neptronic SKG3 Series Installation Instructions Manual

Electrical Control
Connections
Dip switch for adjustment of RS-485
No effect on SKG3 Humidifier operation
JP1 & JP2
Internal connectors
Humidifier
Interlocks
Stage 9 –Electrical Control Connections
Neptronic® SKG3 Steam Humidifier has a modulating control system and requires
an analogue control signal.
All controls connections has been grouped on a specific Interface P.C.B.
P1
RS-232 Connection
DS1
P1
RS-232
O
1
N
DS1
ALARM
COM NO
TB2
1 2
TB2
Alarm contacts Terminal
Neptronic® SKG3 Steam Humidifier has three interlock entries:
•
High level
humidistat contact
should be wired
between terminals
TB1 2 & 3
•
P.D. Switch
contact should be
wired between
terminals
TB1 2 & 4.
•
A third interlock
switch can be wired
between terminals
TB1 2 & 5.
2 3 4 5
1
X
6 7 8 9
ANLG OUT
DUCT
HUMID.
2 3
ROOM
HUMID.
CTRL
DEMAND
+ -
A B
INTER
TB3
LOCK
RS-485
PD
SWITCH
HI-LIM
24 VAC
FAN 700MA
MAX.
NC COM NO NC
3 4 5 6
(Fig. 33)
4
1 2 3
X
P1
6 7 8 9
RS-232
O
1 2 3
N
DS1
+
A B
TB3
RS-485
ALARM FAN
COM NO NC COM NO
TB2
1 2 3 4 5
25
SKG3 Steam Humidifier
TB3
RS-485 Connection
Bacnet Port (2 wires twisted pair)
TB1
Interlock and control signal Terminal
TB1
5
ANLG OUT
DUCT
HUMID.
ROOM
HUMID.
CTRL
DEMAND
-
INTER
LOCK
PD
SWITCH
HI-LIM
24 VAC
700MA
NC
MAX.
TB1
6
HI LEVEL HUMIDISTAT
P. D. SWITCH
OTHER SAFETY INTERLOCK
(Fig. 34)