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Watlow F4T Installation And Troubleshooting User’S Guide

Watlow F4T
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Watlow F4T Install & Troubleshooting 12 Chapter 2 Install and Wire
RTD FM [M, L] A - [L, U, Y*] _ _ A - A _ _ _
2-wire
RTD
T1
S1
R1
S3
S1
3-wire
RTD
T1
S1
R1
S2
S3
S1
2 or 3-wire platinum, 100
and 1,000 Ω @ 32°F (0°C)
calibration to DIN curve
(0.00385 Ω/Ω/°C)
RTD excitation current
of 0.09 mA typical. Each
ohm of lead resistance
may affect the read-
ing by 2.55°C for a 100
ohm platinum sensor or
0.25°C for a 1000 ohm
sensor.
For 3-wire RTDs, the S1
lead (usually white) must
be connected to R1.
* This option does not sup-
port 3-wire RTDs
Lead Wire Resistance
Each wire for 2-Wire
RTDs, not to exceed 10
ohms maximum.
AWG Ohms/1000ft
14 2.575
16 4.094
18 6.510
20 10.35
22 16.46
24 26.17
26 41.62
28 66.17
Note:
3-wire RTD's self-compensate
for lead wire resistance up
to 10 Ω of wire resistance.
RTD (High Density) FMHA - RAAA - A _ _ _
2-wire RTD
S1
R1
S2
R2
S3
R3
S4
R4
Platinum, 100 and 1,000 Ω @ 32°F
(0°C) calibration to DIN curve
(0.00385 Ω/Ω/°C)
RTD excitation current of 0.09 mA
typical. Each ohm of lead resistance
may affect the reading by 2.55°C for
a 100 ohm platinum sensor or 0.25°C
for a 1000 ohm sensor (see table to
right)
Lead Wire Resistance
Each wire for 2-Wire
RTDs, not to exceed 10
ohms maximum.
AWG Ohms/1000ft
14 2.575
16 4.094
18 6.510
20 10.35
22 16.46
24 26.17
26 41.62
28 66.17
Process FM [M, L] A - [L, U] _ _ A - A _ _ _
T1
S1
amperes
-
+
S1
R1
volts
-
+
0 to 20 mA @ 100 Ω input impedance
0 to 10VÎ (dc) @ 20 kΩ input impedance
0 to 50 mVÎ (dc) @ 20 MΩ input impedance
Scalable
Anderson-Bolds ~ 216-360-9800
www.anderson-bolds.com

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Watlow F4T Specifications

General IconGeneral
InputsThermocouple, RTD, mA, V
OutputsRelay, SSR, mA, V
CommunicationEthernet, Modbus RTU
Data LoggingYes
CertificationsCE, UL, cUL, RoHS
Control ModesPID, On/Off
Power Supply100 to 240 VAC
Operating Temperature0 to 50°C
Enclosure RatingIP65
Display4.3 in. (109 mm) color touch panel LCD
Control LoopsUp to 4

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