ONICON System-10 BTU - Manual (Page 18)

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System-10 BTU Meter Manual 03/15 - 0651-16 / 18323 Page 18
3.3.2 Input Signal Connections
Make connections on the mother board, located in the main unit, at terminal strips
T3, T4 and T5. Do not exceed 4.5 in-lb (0.5 Nm) of torque when tightening.
3.3.2.1 Input Signal Connections from Temperature Sensors
!
CAUTION
Shield connections are required for proper operation. Failure to use shielded cable may result in
erratic operation.
* Reference (Black)
* Reference (Black)
* Signal (Red)
* Signal (Red)
* Shield
Temperature Inputs
Supply Temperature
Sensor
Return Temperature
Sensor
BTU METER OUTPUTS
BTU CONTACT OUTPUT
MODE L
BTU CONTACT OUTPUT
MODE 2
MODE STATUS
SUPPLY TEMP
ANALOG OUTPUT
RETURN TEMP
ANALOG OUTPUT
BTU RATE
ANALOG OUTPUT
DELTA T
ANALOG OUTPUT
FLOW RATE
ANALOG OUTPUT
ALARM
OUTPUT
T1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
T3
1
2
3
4
5
T4
1
2
3
4
5
6
7
8
9
10
11
12
13
T5
1
2
3
4
5
6
H2
1
5
10
15
20
25
30
35
40
45
RUN
TEST
60 HZ
LED1 FLOW
INDICATOR
S1
ONICON, INC.
2DO36 Rev. D
20075-50 Rev. A
TEMPERATURE INPUTS
SIGNAL
REFERENCE
SIGNAL
REFERENCE
SHIELDS
RETURN SUPPL
Y
FLOW METER INPUTS
24 VDC SUPPLY +
SUPPLY COMMON -
SHIELD
4-20 mA +
4-20 mA -
FREQUENCY +
FREQUENCY -
DIRECTION +
DIRECTION -
ALARM +
ALARM -
TOP TURBINE
BOTTOM TURBINE
AUXILIARY FLOW METER SIGNALS
4-20 mA +
0-10 VDC +
ANALOG COMMON -
ISOLATED ANALOG COMMON -
SCALED +
SCALED -
D1
D2
D3
D4
VAR1
F1
J1
5
60 HZ
1
J2-1
+15 +24 G G
10
R7
H3
R1
LED1
H2
1
L / B AMP
TBL
15 V PULSE
+ -
T3
1
2
3
4
5
L1 N Not Used