SYSTEM-10 BTU METER
ONICON Incorporated 727.447.6140
Page 23 onicon.com
3.3.2.5 Input Signal Connections from F-3500 Flow Meters
J1
D5 C5
R3
R5
R1
C4
U2
C6
U1
C3
C1
D6
C2
5
G
60HZ
1
J2-1
+15
+24
J2-12
G
G
10
R7
H3
R1
LED1
T1
D1
D2
VAR1
F1
TB1
D4
D3
H1
1
SUPPLY
RETURN
SIGNAL
SHIELDS
REFERENCE
SIGNAL
REFERENCE
TEMPERATURE INPUTS
SHIELD
4-20mA +
4-20mA -
ALARM -
ALARM +
SUPPLY COMMON -
24 VDC
TOP TURBINE
DIRECTION -
FRE
FREQUENCY -
DIR
FLOW METER INPUTS
4-20mA +
SCALED -
AUXILIARY FLOW METER SIGNALS
ISOLATED ANALOG COMMON -
ANALOG COMMON -
0-10 VDC +
BOTTOM TURBINE
1
2
4
3
T1
2
1
3
4
5
MODE STATUS
MODE 2
MODE 1
1
7
6
8
10
11
9
13
14
15
16
18
17
12
-
+
+
-
+
BTU RATE
ANALOG OUTPUT
ANALOG OUTPUT
ANALOG OUTPUT
SUPPLY TEMP
RETURN TEMP
-
+
+
ALARM
-
OUTPUT
ANALOG OUTPUT
FLOW RATE
ANALOG OUTPUT
DELTA T
-
1
5
10
15
20
BTU METER OUTPUTS
BTU CONTACT OUTPUT
BTU CONTACT OUTPUT
-
+
INDICATOR
FLOW
15 V PULSE
RUN
TEST
60 HZ
S1
LED1
25
30
35
40
45
H2
5
13
11
7
6
5
8
10
12
4
2
T4
9
3
6
5
4
3
2
1
T5
T3
3
9
2
4
12
10
8
5
6
7
11
13
1
SYS-10
T4
FLOW METER INPUTS CONNECTIONS
4
GREEN (+) FREQUENCY
SHIELD
SYS-10 INTERNAL CIRCUIT BOARD
YELLOW (-) FREQUENCY
TB1
2
L1
N
NOT USED
24 VOLTS
3
(A) ORANGE / BLACK (+) DIRECTION
(A) WHITE / BLACK (-) DIRECTION
1
2
3
4
5
6
T5
AUXILIARY FLOW METER
BLUE (+) 4-20 mA
SIGNAL CONNECTIONS
BROWN (-) ISOLATED ANA COMMON
5
L1 (+)
POWER SUPPLY
1
N (-)
PROTECTIVE EARTH GROUND
CLASS 2
24 VAC TRANSFORMER
RED (+) 24 VAC/ VDC
BLACK (-) ISOLATED SUPPLY COMMON
GREEN / YELLOW - EARTH GROUND
OR DC POWER SUPPLY
GRAY - SCALED PULSE
VIOLET - SCALED PULSE
1.
Class 2 power supply requirement (input voltage is not field selectable):
•
24 VAC: 20-28 VAC, 50/60 Hz, 12 VA
•
120 VAC: 108-132 VAC, 50/60 Hz, 15 VA
(112 VAC minimum for versions with IP COMMS + 4 channel analog card)
•
240 VAC: 207-253 VAC, 50/60 Hz, 15 VA
(220 VAC minimum for versions with IP COMMS + 4 channel analog card)
2.
The system-10 does not provide power to the F-3500 flow meters. Input power for the flow meters must be provided
separately. Refer to F-3500 IOM for additional wiring information.
For 24 VAC version, it is acceptable to power the F-3500 flow meters from the System-10 mains terminals (TB1).
•
24 VAC: 20-28 VAC, 50/60 Hz, 14 VA
3.
Connect F-3500 factory wires to field wires in appropriate junction box. Do not remove factory wires.
4.
Connections shown with (A) are used with bi-directional (F-3500-12) models only.
Factory wire colors are shown from flow meter cable or additional cable provided by ONICON. Field wire colors may
change from junction box.
5.
Auxiliary flow meter connections are not used by the BTU meter. Both incoming and outgoing connections are made to
the same terminal.