ONICON System-40-BAC BTU - Manual (Page 27)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • [email protected]
System-40-BAC BTU Meter Manual 03/15 - 1045-2 Page A-1
SYSTEM-40-BAC WIRING DIAGRAM
1 2 3 4 5 6 7 8 1 2 3
10
9
H5 SERIAL
TB3
TB2
H3
4321
4321
1 2 1 2 1 2 1 2 TB8 TB7 TB6 TB5 SW6 SW7 SW2 SW1 C34 C33
R6
DS3
R8 H2 SERIAL
2
1
GRD
DS2
R60
3
JMP5
1
CAUTION
INST
ALL
+ SIDE UP
CR2032 BA
TTER
Y
BA
T1
Internal RTD
(Flow)
External RTD
24V AC/DC
(+)
24V COMMON (-) AUX 1 (+) AUX 1 (-) AUX 2 (+) AUX 2 (-) AUX 3 (+) AUX 3 (-) RS485 (+) RS485 (-) RS485 COMMON
TB1 TB4
COMMISSIONING MICROPROCESSOR
RESET
RS485 Termination
1 - 2 = 120 Ω
2 - 3 = None
System-40-BAC Enclosure Label
1048 / 33354 02-15
11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699
www.onicon.com • [email protected]
Actual Size - 4.125” x 2.875”
Cutline
Flow (external) Temperature Sensor*
Name Terminal # Description
1000 ohm TB2-1 RTD signal wire
Not used TB2-2 No Connection
Not used TB2-3 No Connection
1000 ohm RTD TB2-4 RTD signal wire
Remote (internal) Temperature Sensor
Name Terminal # Description
1000 ohm TB3-1 RTD signal wire
Not used TB3-2 No Connection
Not used TB3-3 No Connection
1000 ohm RTD TB3-4 RTD signal wire
Power and Signal Inputs (18 - 22 AWG wire)
Name Terminal # Description
24V ac/dc (+) TB1-1 12 - 36Vac, 50/60Hz, 15 VA max.
12-42Vdc, 15W max. 24V ac/dc Common (-) TB1-2
Aux Pulse Input # 1 (+) TB1-3
For use with open collector
sinking and dry contact ouputs
Pulse Duration: 50ms min.
Sinking Current: 1mA max.
Aux Pulse Input # 1 (-) TB1-4
Aux Pulse Input # 2 (+) TB1-5
Aux Pulse Input # 2 (-) TB1-6
Aux Pulse Input # 3 (+) TB1-7
Aux Pulse Input # 3 (-) TB1-8
RS485 (20 - 24 AWG wire)
Name TB4 Description
RS485 B (+) TB4-1
RS485 Unit Load = 1/4
Recommended Devices
per Segment = 32
RS485 A (-) TB4-2
RS485 Common TB4-3
RS485 Termination Resistor
Name JMP5 Description
120 ohm Position 1 Jumper Position 1 & 2
= 120 ohms 120 ohm Position 2
None Position 3 Jumper Position 2 & 3
= No Termination
* This sensor must be in the same pipe as the flow sensor.