STRATO BW437-RTU - Power Supply Connections

Installation
Power Supply Connections
www.stratoautomation.com
WARNING: Strato Automation utilizes a ½ wave rectified internal
communications circuit and can only share BACnet RS-485 networks
with other controllers with ½ wave BACnet communication devices.
Strato Controllers may not have successful BACnet communications
when sharing networks with full wave devices except if these devices
have an internal isolated RS-485 circuit or using an external isolated
repeater/router. Failure to observe this could result in damaging the
Strato Controllers.
18
19
20
21
17
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9
8
7
6
5
4
3
2
1COM
24VAC
(R)
BO1
BO2
BO3
BO4
BO5
BO6
AO1/BO7
AO2
AO3
COM
AI1
AI2
A+
B-
AO4
COM
AI3
AI4
MS/TP
AO1
BO7
JP2
EOL
NONE
JP3
24 VAC
-
Circuit
Breaker
120 VAC
Neutral
24 VAC
-
Circuit
Breaker
480 VAC
Neutral
277 VAC
240 VAC
208 VAC
120 VAC
Single Voltage AC Transformer
24 VAC
-
Circuit
Breaker
120 VAC
Neutral
Single Voltage AC Transformer
24 VAC
OR
OR
18
19
20
21
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1COM
24VAC
(R)
BO1
BO2
BO3
BO4
BO5
BO6
AO1/BO7
AO2
AO3
COM
AI1
AI2
A+
B-
AO4
COM
AI3
AI4
MS/TP
AO1
BO7
JP2
EOL
NONE
JP3
Multi-tap AC Transformer
18
19
20
21
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1COM
24VAC
(R)
BO1
BO2
BO3
BO4
BO5
BO6
AO1/BO7
AO2
AO3
COM
AI1
AI2
A+
B-
AO4
COM
AI3
AI4
MS/TP
AO1
BO7
JP2
EOL
NONE
JP3
24 VDC
-
120 VAC
Neutral
Single Voltage DC Transformer
The BW437 can be powered using a Class 2, 24Vac
transformer, or to a 24Vdc power source. If the transformer
does not have a circuit protection, it is recommended that a
2-amp fuse be placed between the transformer and the
controller.
+
If powering the BW437 with a 24VAC class II
transformer with the secondary common tied to
ground, it is important to note that the ground being
used is referencing a true earth ground.
BACnet MS/T P
B
A
BACnet MS/T P
B
A
BACnet MS/T P
B
A