SOF_7.2.3-02-152
Effective date: 30-May-08
User Gude
OWL
Page 6
Electrical Connections
Communication Wires
The OWL communicates to the utility room equipment using a RS485 communication protocol across linked communication wires. RAMVAC
recommends using 4 conductor 18 gauge shielded wire , to provide communication and power to the OWL. The A terminal on the OWL must
attach to the A terminal on each of the equipment controls in the system. Likewise, the B terminal will connect to the B terminals on the equipment
controls. The C terminal on the OWL will connect to the shield on the wire. The shield will then connect to the C terminal on the S1 Electrols and
C1 Control, but does not connect to any Interface Controls in the system. Connections A2 and B2 on the OWL are not used.
Power for the OWL
The OWL requires a 12v DC power source to operate. On most systems (see
Schematic 1
) the power source can be either the S1 Electrols
or the air compressor C1 Control. If using the S1 or C1 for power, connect the 5 terminal on the S1/C1 to the 5 terminal on the OWL and the 6
terminal on the S1/C1 to the 6 terminal on the OWL.
(1)
These wires can be included in the wire bundle with the communication wires, but
will be connected to only
ONE
of the RAMVAC equipment controls in the system.
In systems that do not have RAMVAC controls (see
Schematic 2
), a wall transformer is supplied to provide power to the OWL. Connect the black
with white stripe wire from the transformer to the 5 terminal on the OWL and the black wire with text from the transformer to the 6 terminal on the
OWL.
Interface Control Wiring
The communication wires attach to the A and B terminals per the “Communication Wires” section above, but remember the shield does not
connect to any terminal on the remote module.
(2)
A wall transformer is supplied with each Interface Control as a power source.
Connect the black with white stripe wire from the
tranformer to the 5 terminal on the Interface Control and the black wire with text from the transformer to the 6 terminal on the Interface Control.
The Interface Control R and Y connections act as a switch to turn on and off any equipment and can handle up to 24 V. See (
Schematic 4
)
for
a typical attachment to a solenoid. In most applications the interface control can be connected in place of the low voltage remote switch typically
used to turn on and off the equipment.
Note:
An Interface Control must be used to operate any piece of equipment without a RAMVAC control.
Note:
Systems with the optional AutoWash feature require a special Interface Control to control the AutoWash
function. Function of the AutoWash feature is then controlled through the OWL controller instead of the
S1 Electrols.
RAMVAC
OWL
Connections
RAMVAC
S1
Connections
CustomAir
by RAMVAC
C1
Connections
RAMVAC
Interface Control
Connections
Communication
RS485
A
A
A
A
RS485
B
B
B
B
shield / gnd
C
C
C
N/A
DC + Voltage
5
5
(1) See Power for Owl
5
(1) See Power for Owl
5
(2) See Interface Control Wiring
DC Gnd
6
6
(1) See Power for Owl
6
(1) See Power for Owl
6
(2) See Interface Control Wiring
Low Voltage
Switching
N/A
N/A
N/A
R
Y
Summary of Contents for OWL
Page 1: ...OWL On Wall Logic User Guide and Installation...
Page 9: ...Page 7 SOF_7 2 3 02 152 Effective date 30 May 08 OWL User Gude Notes...
Page 18: ...SOF_7 2 3 02 152 Effective date 30 May 08 User Gude OWL Page 16 NOTES...
Page 19: ...Page 17 SOF_7 2 3 02 152 Effective date 30 May 08 OWL User Gude NOTES...
Page 26: ...SOF_7 2 3 02 152 Effective date 30 May 08 User Gude OWL Page 24 NOTES...