SYSTEM-10 BTU METER
ONICON Incorporated 727.447.6140
Page 22 onicon.com
3.3.2.4 Input Signal Connections from FT-3000 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
(A) (-) DIRECTION
(A) (+) DIRECTION
FT-3000 INTERNAL
25
2 3 4
B
A
VC
GRD
1
24 23 22 21 20
19 18 17 16 15 14
13 12 11
SYSTEM STATUS
SW1
SYSTEM BATTERY
CIRCUIT BOARD
25 24 23 22 21 20
DIGITAL OUTPUT 1 & 2
ANALOG OUTPUT
TB1
L1 (+)
POWER SUPPLY
1
N (-)
PROTECTIVE EARTH GROUND
CLASS 2
2
19 18 17 16 15 14
L1
N
NOT USED
24 VOLTS
3
FT-3000 SIGNAL CONNECTIONS
1
2
3
4
5
6
T5
AUXILIARY FLOW METER
(+) 4-20 mA
(-) 4-20 mA
SIGNAL CONNECTIONS
POWER CONNECTIONS
L (+)
N (-)
PROTECTIVE EARTH GROUND
4
POWER SUPPLY
CLASS 2
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 FT-3000 Series flow meters. Input power for the flow meters must be
provided separately. Refer to FT-3000 Series IOM for additional wiring information.
For 24 VAC version, it is acceptable to power the FT-3000 Series flow meter from the System-10 mains terminals (TB1).
•
24 VAC: 20-28 VAC, 50/60 Hz, 19 VA
3.
Connections shown with (A) are used with bi-directional models only.
4.
FT-3000 Series input power is not field selectable. Please confirm the flow meter input voltage type. Contact the factory
if you need to change the input voltage rating.