Fluid Components International FS2000L - Manual (Page 6)

Fluid Components International LLC NuTec ® Series
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6 Doc. No. 06EN003348 Rev. D
Input Power, Two Wire (Loop Power)
1. FCI recommends installing an input power disconnect and a 1/8 amp, fast blow fuse near the instrument to interrupt power during
installation, maintenance, calibration, alarm selection and troubleshooting procedures. Conduit should also be installed according to the
local electrical codes or hazardous location requirements. If the wires are to be pulled through the enclosure it is recommended that the
electronics be removed from the housing.
2. With the enclosure cover removed, slide the control circuit out half way to expose terminal block P1, Figure 13.
3. If the control circuit requires removal, slide out the control circuit and remove the green ground wire going to the ground screw. Discon-
nect the sensor element wires from the Ref and Act. Reinstall the control circuit before connecting the power and loads.
4. Connect the loop power leads to P1 as indicated on the control circuit. See Figure 11. Make sure that an earth ground wire is attached to
the earth ground terminal inside the housing. It is very important that the current loop connected to P1 maintains a voltage rang between
18 and 29.5 volts at the control circuit. Figure 11 shows a typical wiring configuration with a current sense device having 250&! imped-
ance. With this load, the power supply can be 22 to 33Vdc. Check the load impedance of the current sense device and the power supply
and see if they are compatible the NuTec instrument.
5. If the open collector switch is needed, make the connections to P1. See example circuit Figure 11.
6. After making all the wire connections, slide the control circuit into the housing until it passes the rim of the housing.
Refer to the next section for the set point and alarm state settings.
CURRENT
LOOP
TB 1
1.4K
EXAMPLE OF
AN OPEN
COLLECTOR
CIRCUIT
POWER
SUPPLY
OPEN
COLECTOR
+
+
-
-
+
-
250 ohm
4-20mA Current Loop
22 to 33
Vdc
18 to 29.5
Vdc
24Vdc
POWER
SUPPLY
+
-
Relay
C01067-1-1
AC
LINE
AC
NEUT
INPUT
RANG
E
10
0-2
40
V
A
C
50/60Hz
N/O
COM
N/C
6
AMPS
MAX
120/240
VAC
SN
OUTPUT A
N
D
RE
LA
Y
CONTROL
+
-
RELAY
TB4
FLUID COMPONENTS INTL
SAN MARCOS CA.
R
NuTec
T M
TB5
TB6
TIE DOWN
BRACKET FOR
POWER WIRES
RELAY SHOWN
DE-ENERGIZED
OPEN C
GND
24 Vac
24 Vdc
TB 1
TOP
BOARD
(BOTTOM SIDE)
5 to 24
Vdc
ALARM
STATE
5 to 24 Vdc
5K
BOTTOM
BOARD
INPUT
POWER
RELAY
OUTPUT
EXAMPLE OF
AN OPEN
COLLECTOR
CIRCUIT
{
PRE-WIRED
}
PRE-WIRED
C01065-1-1
Figure 9 100 - 240 Vac Input Power
Figure 10 24 Vdc/Vac Input Power Figure 11 2 Wire (LoopPower)
OPEN C
GND
24 Vac
24 Vdc
TB 1
BOTTOM SIDE
OF BOARD
5 to 24
Vdc
SUPPLY
ALARM
STATE
5 to 24 Vdc
5K
EXAMPLE OF
AN OPEN
COLLECTOR
CIRCUIT
24
Vac
24
Vdc
OR
COM
TB 2
N/C
N/O
RELAY
OUTPUT
RELAY SHOWN
DE-ENERGIZED
POWER
INPUT
-
+
C01066-1-1