Watlow F4T Operating Manual
Winona, Minnesota USA
ISO 9001
F4T Controller
Installation and Troubleshooting
User’s Guide
TOTAL
CUSTOMER
SATISFACTION
3 Year Warranty
Registered Company
1241 Bundy Boulevard., Winona, Minnesota USA 55987
Phone: +1 (507) 454-5300, Fax: +1 (507) 452-4507
http://www.watlow.com/F4T
1720-6742 Rev. A Made in the U.S.A.
January 2019
Safety Information
We use note, caution and warning symbols throughout this document to draw your attention to
important operational and safety information.
A “NOTE” marks a short message to alert you to an important detail.
A “CAUTION” safety alert appears with information that is important for protecting your
equipment and performance. Be especially careful to read and follow all cautions that
apply to your application.
A “WARNING” safety alert appears with information that is important for protecting you,
others and equipment from damage. Pay very close attention to all warnings that apply to
your application.
The safety alert symbol, (an exclamation point in a triangle ç) precedes a general
CAUTION or WARNING statement.
The electrical hazard symbol, (a lightning bolt in a triangleÓ) precedes an electric shock
hazard CAUTION or WARNING safety statement. Further explanations follow:
Symbol Explanation
CAUTION: Warning or Electrical Hazard that needs further explanation than label on unit can provide. Consult QSG for further infor-
ç
Ó
mation.
CAUTION
WARNING
Electrical
or
Shock Hazard
AVERTISSEMENT: mise en garde ou danger qui demande plus de
précisions que l’information sur l’étiquette de l’unité. Consultez le
manuel de l’utilisateur pour plus d’informations.
Unit can be powered with either alternating current (ac) voltage or
direct current (dc) voltage.
ESD Sensitive product, use proper grounding and handling techniques when installing or servicing product.
Do not throw in trash, use proper recycling techniques or consult
manufacturer for proper disposal.
Enclosure made of Polycarbonate material. Use proper recycling
techniques or consult manufacturer for proper disposal.
Unit is a Listed device per Underwriters Laboratories®. It has been
evaluated to United States and Canadian requirements for Process
Control Equipment. CSA 22.2#14, File 158031, UL 61010, File
E185611 QUYX, QUYX7. . See: www.ul.com
Unit is compliant with European Union directives. See Declaration
of Conformity for further details on Directives and Standards used
for Compliance.
Unit has been reviewed and approved by Factory Mutual as a
Temperature Limit Device per FM Class 3545 standard. See: www.
fmglobal.com
Symbol Explanation
Unit has been reviewed and approved by CSA International for use
as Temperature Indicating-Regulating Equipment per CSA C22.2 No.
24. See: www.csagroup.org
This F4T User’s Guide is copyrighted by Watlow Electric Manufacturing Company, © May 2016
with all rights reserved.
• © 2010-2012, QNX Software Systems Limited. All rights reserved.
• © 2008 -2014, Crank Software Inc. All rights reserved.
• Watlow® and TRU-TUNE® are registered trademarks of Watlow Electric Manufacturing
Company.
• UL® is a registered trademark of Underwriter's Laboratories Incorporated.
• Modbus® is a registered trademark of Schneider Automation Incorporated.
• Vaisala® is a registered trademark of Vaisala OY Corporation.
• Microsoft® and Windows® are registered trademarks of the Microsoft Corporation.
Quencharc® is a registered trademark of ITW Paktron.
10-07433 Rev. –
TC
Table of Contents
Chapter 1: Overview .....................................2
Available F4T Literature and Resources ......................... 2
Chapter 2: Install and Wire .................................4
Getting Started Quickly...The Logical Approach ...................4
Dimensions ............................................... 4
Installing the F4T .......................................... 5
Panel Mounting the Base .................................5
Flush Mounting the Base ................................. 6
Electrical Isolation .........................................8
Wiring the F4T Base ........................................8
Power Requirements .......................................9
Flex Module (FM) Characteristics .......................... 9
Flex Module Installation .....................................9
Wiring the Modules ....................................... 10
Communications Connections ............................ 24
Chapter 3: Connecting a PC ...............................25
Using the User Interface (UI) to Change or View Ethernet Settings ... 25
Understanding the Front Panel Navigational Buttons ..........25
Connecting the F4T Base to a PC .............................27
DHCP Connection ..................................... 27
Fixed IP Connection ....................................27
Composer Software ....................................... 28
Starting Composer Software .............................28
Verifying Pluggable Flex Module Installation Using Composer ...28
Chapter 4: Calibration ...................................30
Calibrating the F4T Inputs ..................................30
Required Equipment When Performing Calibration ............... 30
Calibration of Analog Inputs ................................. 31
Using Composer Software to Calibrate Analog Inputs ............. 32
Using the User Interface to Calibrate Analog Inputs ...............32
Chapter 5: Troubleshooting ................................33
Replacing the Battery ......................................39
Chapter 6: Appendix ....................................41
F4T Base Specifications ....................................41
F4T Base Ordering Information ...........................44
Flex Modules and Limit I/O Specifications ...................... 45
Flex Module - Mixed I/O Ordering Information ............... 48
Flex Module - Limit Ordering Information ................... 49
Flex Modules - High Density I/O Specifications ..................49
Flex Module - High Density Ordering Information ............. 53
Flex Module - Communications Ordering Information .........53
How to Reach Us .........................................56
Watlow F4T Install & Troubleshooting • 1 • Table of Contents
1
Chapter 1: Overview
Available F4T Literature and Resources
Document Title and Part Number Description
This document looks deeper at the system
F4T Setup and Operation User Guide,
part number: 1680-2414 Rev. A
configuration using Composer™ software and
the F4T function blocks and their connections.
Common product usage is described and illustrated through application examples.
F4T Specification Sheet, part number:
WIN-F4T-1118
Watlow Application Guide
Watlow Support Tools DVD, part
number: 0601-0001-0000
To acquire one or more of these documents navigate to the Watlow website where you will
have a choice to download free copies or purchase printed versions. Click on the link
below to nd your document of choice: http://www.watlow.com/F4T. For the Application
Guide, click here: http://www.watlow.com/common/catalogs/les/appguide.pdf
Describes F4T hardware options, features,
benefits and technical specifications.
Comprehensive guide to understanding thermal
principles, electrical noise, best practises for
wiring industrial controls and much more.
Contains all related user documents, tutorial
videos, application notes and the application
guide described above.
Your Comments are Appreciated
In an effort to continually improve our technical literature and ensuring that we are
providing information that is useful to you, we would very much appreciate your comments
and suggestions. Please send any comments you may have to the following e-mail address:
TechlitComments@watlow.com
Technical Assistance
If you encounter a problem with your Watlow controller, review your conguration
information to verify that your selections are consistent with your application: inputs,
outputs, alarms, limits, etc. If the problem persists, you should rst contact the Original
Equipment Manufacturer (OEM) for assistance. If that is not an option you can also get
assistance directly from Watlow:
• Contact a local representative: see last page
• Email: wintechsupport@watlow.com
• Call: 1-800-4WATLOW (1-800-492-8569) or +1 (507) 494-5656 from 7 a.m. to 5 p.m. Central
Standard Time (CST) (Select options for Controls & Software and Technical Support)
Please have the following information available when calling:
• Complete model number • User’s Guide • All conguration information
Watlow F4T Install & Troubleshooting • 2 • Chapter 1 Overview
Warranty
This product is warranted by Watlow for a period of 36 months in accordance with the
terms and conditions set forth on Watlow's website which can be accessed at
www.watlow.com/terms.
Return Material Authorization (RMA)
1. Call Watlow Customer Service, (507) 454-5300, for a Return Material Authorization (RMA)
number before returning any item for repair. If you do not know why the product failed,
contact an Application Engineer or Product Manager. All RMA’s require:
• Ship-to address
• Bill-to address
• Contact name
• Phone number
• Method of return shipment
• Your P.O. number
• Detailed description of the problem
• Any special instructions
• Name and phone number of person returning the product.
2. Prior approval and an RMA number from the Customer Service Department is required
when returning any product. Make sure the RMA number is on the outside of the carton
and on all paperwork returned. Ship on a Freight Prepaid basis.
3. After we receive your return, we will examine it to verify the reason for the product
failure. Unless otherwise agreed to in writing, Watlow's standard warranty provisions,
which can be located at www.watlow.com/terms, will apply to any failed product.
4. In the event that the product is not subject to an applicable warranty, we will quote
repair costs to you and request a purchase order from you prior to proceeding with the
repair work.
5. Watlow reserves the right to charge for no trouble found (NTF) returns.
Document Overview and Purpose
The purpose of this document is to assist the installer in providing necessary information to
mount, wire and power up the F4T controller. This document also provides information to
assist in the process of diagnosing problems which might occur during or after the
installation process.
Watlow F4T Install & Troubleshooting • 3 • Chapter 1 Overview
2
Chapter 2: Install and Wire
Getting Started Quickly...The Logical Approach
The steps below outline installation and wiring for the base alone. More detail for each is
provided in the following sections.
1. Using this document for orientation, nd the base part number and note any installed
options as well as input voltage requirements.
2. Mount/install the base in the panel (see instructions below for panel mount or ush
mount options).
3. Ensure that incoming power is off and connect to the base power supply connector (see
section "Wiring the F4T Base").
4. Make note of any I/O module slot dependencies installing each one into an appropriate
base slot (see graphic entitled F4T Slot Dependencies under "Flex Module Installation").
5. Connect the wires from each eld device to the associated I/O module connector (see
section "Wiring the Modules").
6. Insert all wired I/O connectors onto the applicable modules and apply power to the
base.
7. Connect the controller to a computer running Composer™ software using an Ethernet
cable (see section "Connecting the F4T Base to a PC").
Dimensions
Panel Mount
Front View Side View
Watlow F4T Install & Troubleshooting • 4 • Chapter 2 Install and Wire
Dimensions (cont.)
Installing the F4T
Panel Mounting the Base
1. Make the panel cutout using the mounting template dimensions above and insert the
case assembly into the panel cutout.
2. While pressing the case assembly rmly against the panel, slide the Retention Collar
over the back of the controller until the gasket is compressed.
3. For an IP65 seal, alternately place and push
the blade of a screwdriver against each of the
the four corners of the retention collar assembly. Apply pressure to the face of the controller while pushing with the screwdriver. Don't
be afraid to apply enough pressure to properly
install the controller. The seal system is compressed more by mating the retention collar
tighter to the front panel. If you can move the
case assembly back and forth in the cutout, you
do not have a proper seal. The tabs on each side
of the retention collar have teeth that latch into
the ridges on the sides of the controller. Each
tooth is staggered at a different depth from the
front so that only one of the tabs, on each side,
is locked onto the ridges at a time.
Watlow F4T Install & Troubleshooting • 5 • Chapter 2 Install and Wire
Dimensions (cont.)
Flush Mounting the Base
1. Fabricate the mounting panel per the ush mount vertical or horizontal panel template
(shown below).
2. Press PEM standoffs (based on panel material) into mounting panel per supplier recommendations.
PEM Standoffs
PEM P/N S0-632-6 Z1 S0S-632-6 S0A-632-6 S04-632-6
Material
Steel
(Zinc Plated)
3. Insert the controller through the ush mount bracket and lock it in place with the retention collar.
4. Mount ush mount bracket to back panel with (6) #6-32 screws.
5. Apply overlay to front panel.
Note:
Overlay is provided by the user.
Stainless
Aluminum
Steel
Hardened
Stainless
Steel
Watlow F4T Install & Troubleshooting • 6 • Chapter 2 Install and Wire
Dimensions (cont.)
Watlow F4T Install & Troubleshooting • 7 • Chapter 2 Install and Wire
Electrical Isolation
Safety Isolation: 2300VÅ (ac)
Controller Power Supply
24 to 28V
24 to 28VÅ (ac)
100 to 240VÅ (ac)
Mechanical Relay,
Solid-State Relay,
NO-ARC Relay
Î (dc)
Safety Isolation
Outputs
Safety Isolation
Safety Isolation
Controller
Low Voltage Power Bus
Low-voltage Isolation: 42V peak
No Isolation
No Isolation
Low-voltage
Isolation
No Isolation
Low-voltage
Isolation
Low-voltage
Isolation
Digital Inputs & Outputs
Switched DC, Open Collector,
Process outputs
Analog Inputs
USB Host
USB Device
Ethernet Port
Wiring the F4T Base
Identify Connector Pinout
Terminal Function
98
99
- - - - - - - CX
CY
CZ
- - - - - - - -
GND Functional earth ground
Power input: ac or dc+
Power input: ac or dc-
Inter-module Bus A
Inter-module Bus B
Inter-module Bus Common
Power and Communications
Warning:
Óç
Use National Electric (NEC) or other country-
specic standard wiring and safety practices
when wiring and connecting this controller to
a power source and to electrical sensors or
peripheral devices. Failure to do so may result
in damage to equipment and property, and/or
injury or loss of life.
Avertissement :
Óç
Utilisez les pratiques de câblage et de sécurité de National Electric (NEC) ou les normes
spéciques au pays lors du câblage et de
la connexion de ce régulateur à une source
d'alimentation et aux capteurs électriques ou
aux équipements périphériques. Tout manquement à cette règle pourrait provoquer des
dégâts sur l'équipement et le matériel, et/ou
des blessures personnelles ou des décès.
Watlow F4T Install & Troubleshooting • 8 • Chapter 2 Install and Wire
Wire Size and Torque for Screw Terminations
YYN
YY
NY
• 0.0507 to 3.30 mm2 (30 to 12 AWG) single-wire termination or two 1.31 mm2 (16 AWG)
• 0.57 Nm (5.0 lb.-in.) torque
Power Requirements
• 85 to 264VÅ (ac), (Models F4T _ _ [1, 2, 3, 4])
• 20.4 to 30.8VÅ (ac) or Î (dc), (Models F4T _ _ [5, 6, 7, 8])
• 50 to 60 Hz
• Power consumption 23W, 54VA
• Inter-module Bus (CX, CY, CZ)
• Do not route network wires with power wires. Connect
inter-module bus wires in daisy-chain fashion when connecting multiple devices in a network
• The power supply within the controller base meets all
power requirements for any and all inserted modules.
Flex Module (FM) Characteristics
Many of the modules appear to look alike at rst glance, therefore, it is always recommend-
ed that the module part number be noted and veried
prior to plugging it into any of the available slots in a
base. Each module is identied with a part number located on the back side of the assembly right below the connector (black label), as seen in the graphic to the right.
Flex Module Installation - To view video go to www.watlow.com/F4T
Some Flex Modules require that they be installed in specic slots within the base. As an
example, if a communications card is to be installed, it must be placed in slot 6. Slot 6 can
receive and accept any card, however, it is the only slot that allows for a communication
card (see table to the right).
Slots are keyed such that modules cannot be inserted upside down. Insert modules with the
component side facing the right when viewing the controller from the rear.
Installing the modules:
1. Note the part number to determine the
types of inputs and outputs available to be
connected in step 7.
2. Turn off power to the controller.
3. Select a slot for the module (see table to
right). If replacing a module, remove the
old module.
4. Afx corresponding slot number labels
(provided) to the module and to the removable screw terminal block.
Watlow F4T Install & Troubleshooting • 9 • Chapter 2 Install and Wire
Flex Module - Slot Dependencies
Module Type
Dual SSR *
FMHA-K
Communications
FMCA-(2)
All Other Modules
Y = Allowed
* Reguires two adjacent slots
YN
NNNN
YYYY
N = Not allowed
Slot #
Y
456123
5. With the component side of the module facing right (viewing the controller from the
rear) insert the module in to the slot until it latches.
6. Remove the screw terminal block from the module.
7. Wire eld devices to the appropriate terminals (see. Wiring details for each input and
output are provided in the following sections.
8. Reconnect the wired screw terminal block to the module. Be sure to reconnect the terminal block to the correct module.
9. Restore power to the controller.
Note:
If a module is swapped out and replaced with a different type or moved to another open
slot after configuration, the controller will no longer function properly without being reconfigured using Composer™ software.
Note:
To minimize the possibility of unwanted downtime due to a module being removed and
installed into the wrong slot, affix the slot number labels (as directed in step 4 above) to
each module (as shown in the graphic below, white circle) and each removable screw terminal block.
Wiring the Modules
Prior to wiring any of the I/O modules described in this document it is recommended that
the warnings and notes listed below be reviewed.
CAUTION:
To prevent damage to the controller, do not connect wires to unused terminals.
AVERTISSEMENT: Pour prévenir tout endommagement du régulateur, ne pas faire de raccor-
dements à des bornes inutilisées.
CAUTION
Switching pilot duty inductive loads (relay coils, solenoids, etc.) with the mechanical relay,
solid-state relay or open collector output options requires the use of an R.C. suppressor for
AC load or a diode for a DC load.
AVERTISSEMENT: les charges inductives de commutation de lampes témoins (bobines de re-
lais, solénoïdes, etc.) avec des options de sortie à relais mécanique, de relais statique ou collecteur ouvert requièrent un dispositif antiparasite R.C.
Watlow F4T Install & Troubleshooting • 10 • Chapter 2 Install and Wire
ç
ç
Quencharc Note:
Place the Quencharc directly across the external coil as shown below. For a DC load, place
User Load
the cathode of the diode, to the positive voltage of the load and the anode to the ground of
the load.
_
L
Quencharc
Watlow Part #: 0804-0147-0000
_
K
N
Note:
It is possible that the terminal strip labeling for any given module could be the same. For
example, if a Thermocouple input module is installed in slot 1 and 2, each slot would have
S1 and R1 on its label. When referencing either of these inputs the differentiating factor is
the module slot number, therefore the reference should be input 1 of slot number x.
Note:
Maintain electrical isolation between the analog input, digital input-outputs, switched dc/
open collector outputs and process outputs to prevent ground loops.
Note:
The F4T meets IP10 requirements when the empty slots have slot caps installed.
Note:
Maximum wire size and torque for screw terminations:
• 0.0507 to 3.30 mm2 (30 to 12 AWG) single-wire termination or two 1.31 mm2 (16 AWG)
• 0.57 Nm (5.0 lb.-in.) torque
Input Connections
Thermocouple FM [M, L] A - [L, U, Y] _ _ A - A _ _ _
• Grounded or ungrounded sensors, greater than 20MΩ input impedance, 2kΩ source resistance max.
• 3 microampere open-sensor detection
• Thermocouples are polarity sensitive. The negative lead (usually red)
S1
R1
must be connected to S terminal
• To reduce errors, the extension wire for thermocouples must be of the
same alloy as the thermocouple.
Thermocouple (High Density) FMHA - RAAA - A _ _ _
-
S1
+
R1
-
S2
+
R2
-
S3
+
R3
-
S4
+
R4
• Grounded or ungrounded sensors, greater than 20MΩ input impedance, 2kΩ source resistance max
• 3 microampere open-sensor detection
• Thermocouples are polarity sensitive. The negative lead (usually
red) must be connected to S terminal
• To reduce errors, the extension wire for thermocouples must be of
the same alloy as the thermocouple
Watlow F4T Install & Troubleshooting • 11 • Chapter 2 Install and Wire
RTD FM [M, L] A - [L, U, Y*] _ _ A - A _ _ _
RTD
RTD
2-wire RTD
• 2 or 3-wire platinum, 100
and 1,000 Ω @ 32°F (0°C)
calibration to DIN curve
(0.00385 Ω/Ω/°C)
T1
S3
S1
R1
S1
2-wire
S2
T1
S3
S1
R1
S1
3-wire
• 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
RTD (High Density) FMHA - RAAA - A _ _ _
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.
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)
Process FM [M, L] A - [L, U] _ _ A - A _ _ _
• 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
+
-
T1
S1
amperes
-
S1
+
R1
volts
• Scalable
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
Watlow F4T Install & Troubleshooting • 12 • Chapter 2 Install and Wire
Input Connections (cont.)
-
-
CW
Process (High Density) FMHA - RAAA - A _ _ _
Volts
S1
+
R1
-
S2
+
R2
-
S3
+
R3
-
S4
+
R4
Potentiometer FM [M, L] A - [L, U] _ _ A - A _ _ _
CW
S_
R_
CCW
Amps
S1
+
R1
-
S2
+
R2
-
S3
+
R3
-
S4
+
R4
• 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
• Potentiometer: 0 to 1,200Ω
Potentiometer (High Density) FMHA - RAAA - A _ _ _
• Potentiometer: 0 to 1,200Ω
CCW
CW
CCW
CW
CCW
CW
CCW
S_
R_
S_
R_
S_
R_
S_
R_
Watlow F4T Install & Troubleshooting • 13 • Chapter 2 Install and Wire
Input Connections (cont.)
Thermistor FM [M, L] A - [M, T] AAA - A _ _ _
• >20 MΩ input impedance
• 0 to 40kΩ, 0 to 20kΩ, 0 to 10kΩ, 0 to 5kΩ
• 2.252kΩ and 10kΩ base at 77°F (25°C)
• Drive current is 109 μA as a constant current source
• User-selectable curves for Alpha Technics, BetaTHERM and YSI
S1
R1
• User-scaling support for Steinhart-Hart coefcients
Thermistor
Curve Setting
Base R
@ 25 ºC
Alpha
Technics
Curve A 2.252K Curve A 2.2K3A 004
Curve B 10K Curve A 10K3A 016
Curve C 10K Curve C 10K4A 006
Use Steinhart-Hart equation coefficients (A, B and
C) from thermistor manufacturer corresponding to
Custom
the terms of the Steinhart-Hart equation:
1 / T = A + Bln(R) + C (ln(R))
Beta
Therm
YSI
3
Thermistor (High Density) FMHA - PAAA - A _ _ _
S1
R1
S2
R2
S3
R3
S4
R4
• >20 MΩ input impedance
• 0 to 40kΩ, 0 to 20kΩ, 0 to 10kΩ, 0 to 5kΩ
• 2.252kΩ and 10kΩ base at 77°F (25°C)
• Drive current is 109 μA as a constant current source
• User-selectable curves for Alpha Technics, BetaTHERM and YSI
• User-scaling support for Steinhart-Hart coefcients
Thermistor
Curve Setting
Base R
@ 25 ºC
Alpha
Technics
Curve A 2.252K Curve A 2.2K3A 004
Curve B 10K Curve A 10K3A 016
Curve C 10K Curve C 10K4A 006
Use Steinhart-Hart equation coefficients (A, B and
C) from thermistor manufacturer corresponding to
Custom
the terms of the Steinhart-Hart equation:
1 / T = A + Bln(R) + C (ln(R))
Beta
Therm
YSI
3
Watlow F4T Install & Troubleshooting • 14 • Chapter 2 Install and Wire
Input Connections (cont.)
Int
Digital Input FMLA - YEBA - A _ _ _
• Update rate 10Hz
• Voltage
- Max. input 36V at 3mA
- Input inactive when =<
B2
D2
2V
- Input active when =>
Vdc
3V at 0.25mA
• Dry contact
- Input inactive when =>
500Ω
- Input active when =<
100Ω
- Max. short circuit 13mA
Digital Input (High Density) FMHA - CAAA - A _ _ _
ernal
Common
DC Input
DC Input
DC Input
DC Input
DC Input
DC Input
Supply
B1
D1
D2
D3
D4
D5
D6
Z1
• Voltage
- Max. input 36V at 3mA
- Input inactive when =<
2V
- Input active when => 3V
at 0.25mA
• Dry contact
Vdc
- Input inactive when =>
500Ω
- Input active when =<
100Ω
- Max. short circuit 13mA
Voltage Input
common
B2
D2
Dry Contact
common
B2
D2
Vdc
Voltage Input Dry Contact
common
B1
_
D
_
D
Z1
24 Vdc
Current Transformer FMMA - C _ _ A - A _ _ _
• Input range is 0 to 50 mA (ac).
• Current transformer part number: 16-0246
• 100 Ω input impedance
• Response time: 1 second maximum
T1
S1
Watlow F4T Install & Troubleshooting • 15 • Chapter 2 Install and Wire
• Accuracy +/-1 mA typical
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