![background image](http://html.mh-extra.com/html/onicon/sys-10-1110-01o1/sys-10-1110-01o1_installation-and-operation-manual_1636085024.webp)
SYSTEM-10 BTU METER
ONICON Incorporated 727.447.6140
Page 24 onicon.com
3.3.2.6 Input Signal Connections from FSM-3 Series 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
SHIELD
SYS-10 INTERNAL CIRCUIT BOARD
(+) FREQUENCY
(-) FREQUENCY
TB1
L1 (+)
POWER SUPPLY
1
N (-)
PROTECTIVE EARTH GROUND
CLASS 2
L1
N
NOT USED
24 VOLTS
MOD1
GNDE
GNDS
GNDS
GPIO
RX
TX
3V3
TP15
TP9
TP16
TP3
TP1
TP10
J7
J8
TB8
TB7
TB6
TB11
TB5
TB10
TB9
TB4-POWER
TB3-COILS
TB2-ELEC2
TB1-ELEC1
J6
J5
J4
J3
J2
J1
26
24
25
23
4
2
3
1
H2
40
38
37
39
4
2
3
1
H1
2
1
F-Out
Ana Out
24V Only
B
B
A
A
B
B
A
B
A
Ana-IN3
Ana-IN2
Ana-IN1
Digital I/O
SHLD
SHLD
SHLD
3
2
1
RTD2
RTD1
COM
F
V
I
COM
COM
I
V
SHLD
SHLD
SHLD
SHLD
18-28V ~
A
20096 A7 23JAN19
ONICON
B
A
SHLD
FSM-3 INTERNAL CIRCUIT BOARD
FSM-3 SIGNAL CONNECTIONS
TB 5
2
TB 4
18-28V ~
L ( / +) 24 VAC/DC
N ( / -) COMMON
PROTECTIVE EARTH GROUND
POWER SUPPLY
CLASS 2
1
2
3
4
5
6
T5
AUXILIARY FLOW METER
SIGNAL CONNECTIONS
COM
F
COM
I
V
2
COM
I
V
1
(A) (+) DIRECTION
(A) (-) DIRECTION
(+) 4-20 mA
(-) 4-20 mA
3
2
1
TB 6
3
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
•
240 VAC: 207-253 VAC, 50/60 Hz, 15 VA
2.
The System-10 does not provide power to the FSM-3 Series flow meters. Input power for the flow meters must be
provided separately. Refer to FSM-3 Series IOM for additional wiring information .
For 24 VAC version, it is acceptable to power the FSM-3 Series flow meters from the System-10 mains terminals (TB1).
•
24 VAC: 20-28 VAC, 50/60 Hz, 52 VA
3.
Connections shown with (A) are used with bi-directional models only.