Teledyne THCD-401 User manual

INSTRUCTION MANUAL
THCD-401
ISO 9001
CERTIFIED
www.teledyne-hi.com

THCD-401 Instruction Manual Page 2 of 47
Manual Print History
The print history shown below lists the printing dates of all revisions created for this manual. The revision level
letter increases alphabetically as the manual undergoes subsequent updates. Each new revision includes a
revised copy of this print history page.
Revision A (Document Number 183-012020) ................................................................. January 2020
Visit www.teledyne-hi.com for WEEE disposal guidance.
Description of Symbols and Messages used in this manual
WARNING: indicates a hazardous situation, which, if not avoided, could result in death or
serious injury. Do not proceed beyond a WARNING notice until the indicated conditions are
fully understood.
CAUTION: indicates a hazardous situation, which if not avoided, could result in minor or
moderate injury. Do not proceed beyond a CAUTION notice until the indicated conditions are
fully understood and met.
NOTICE: calls attention to a procedure or practice that if not correctly performed or adhered
to, could result in equipment damage, loss of data, or inaccurate data.
NOTE:is used for tips and other digressions.
Hastings Instruments reserves the right to change or modify the design of its equipment without any
obligation to provide notification of change or intent to change.

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Table of Contents
1. INSTRUMENT OVERVIEW .................................................................................................... 6
FEATURES .................................................................................................................. 7
ACCESSORIES ............................................................................................................... 7
(a) Cables .................................................................................................................... 7
2. SPECIFICATIONS .............................................................................................................. 8
POWER SUPPLY ............................................................................................................ 8
OPERATING CONDITIONS ................................................................................................... 8
MEASUREMENT AND OUTPUT ............................................................................................... 8
MECHANICAL ............................................................................................................... 9
3. INSTALLATION AND INTERCONNECTIONS ............................................................................. 10
RECEIVING INSPECTION ................................................................................................... 10
MECHANICAL CONNECTIONS .............................................................................................. 10
TRANSDUCER SOCKET PINOUT –15 PIN ‘D’ TYPE (X4)................................................................... 10
INTERFACE SOCKET PINOUT –MINIATURE 15 PIN ‘D’ TYPE ............................................................... 11
USB CONNECTOR –USB TYPE-C ........................................................................................ 11
WARNINGS ............................................................................................................... 12
4. FRONT PANEL OPERATION ............................................................................................... 13
INTRODUCTION ........................................................................................................... 13
COMMON SWITCH FUNCTIONS ............................................................................................ 13
(a) Menu screens ......................................................................................................... 13
(b) Editable screens...................................................................................................... 13
(c) Edit mode ............................................................................................................. 13
HMI BREAKDOWN ........................................................................................................ 14
(a) Main Screen ........................................................................................................... 14
(b) Main Menu Screen.................................................................................................... 15
(c) Inputs Screen ......................................................................................................... 16
(d) Setpoint Screen....................................................................................................... 17
(e) Ethernet Screen ...................................................................................................... 18
(f) Filtering Screen ...................................................................................................... 19
(g) Relay screen .......................................................................................................... 20
(h) Factory Defaults Confirm Screen ................................................................................. 21
(i) Menu Lock out screens .............................................................................................. 22
(j) Miscellaneous Screen................................................................................................ 23
(k) Menu Lock-out Configuration screen ............................................................................. 24
5. WEBSERVER OPERATION.................................................................................................. 25
MAIN SCREEN ............................................................................................................. 25
‘LIVE DATA’PAGE ....................................................................................................... 26

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‘CHANNEL CFG’PAGE.................................................................................................... 26
‘CONTROL CFG’PAGE.................................................................................................... 27
(a) ‘Communication’ section ........................................................................................... 27
(b) ‘Filtering’ page....................................................................................................... 28
(c) ‘Relay’ Page........................................................................................................... 28
‘LINEARIZATION’PAGE ................................................................................................... 29
6. SERIAL & TCP COMMUNICATION......................................................................................... 30
INTRODUCTION ........................................................................................................... 30
COMMAND/QUERY FORMAT .............................................................................................. 30
MAIN COMMANDS ......................................................................................................... 31
(a) Output current readings – ‘r’ ...................................................................................... 31
(b) Output current readings repeatedly – ‘rp’ ...................................................................... 32
(c) Setpoint value – ‘spv’ ............................................................................................... 32
(d) Setpoint mode – ‘spm’ .............................................................................................. 32
(e) Setpoint source – ‘sps’ .............................................................................................. 33
(f) Setpoint initial value – ‘siv’........................................................................................ 33
(g) Setpoint initial mode – ‘sim’ ...................................................................................... 33
COMMS COMMANDS ....................................................................................................... 34
(a) Ethernet IP address – ‘eip’ ......................................................................................... 34
(b)Ethernet subnet mask – ‘esm’ ..................................................................................... 34
CHANNEL SETUP COMMANDS.............................................................................................. 34
(a) Input channel display label – ‘dil’ ................................................................................ 34
(b) Input channel units string – ‘uiu’ ................................................................................. 35
(c) Input channel range – ‘uir’ ......................................................................................... 35
(d) Input channel full scale – ‘uif’ .................................................................................... 35
FILTERING COMMANDS .................................................................................................... 36
(a) Filter band – ‘flb’ .................................................................................................... 36
(b) Filter size – ‘fls’...................................................................................................... 36
RELAY CONTROL COMMANDS.............................................................................................. 36
(a) Relay trip point – ‘rlt’ .............................................................................................. 36
(b) Relay source – ‘rls’................................................................................................... 36
(c) Relay hysteresis – ‘rlh’.............................................................................................. 36
OTHER COMMANDS ....................................................................................................... 37
(a) Date of last factory calibration – ‘dlc?’.......................................................................... 37
(b) User input rezero – ‘irz’ ............................................................................................ 37
(c) Retrieve all settings – ‘ras’ ........................................................................................ 37
7. PRINCIPLES .................................................................................................................. 38
INTRODUCTION ........................................................................................................... 38
ANALOG INPUTS .......................................................................................................... 38

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(a) Label ................................................................................................................... 38
(b) Range................................................................................................................... 38
(c) Full Scale Voltage.................................................................................................... 38
(d) Units String ........................................................................................................... 38
ANALOG OUTPUTS ....................................................................................................... 38
SETPOINT CONTROL ...................................................................................................... 39
(a) Setpoint Mode ........................................................................................................ 39
(b) Setpoint Source ...................................................................................................... 39
USER REZERO ............................................................................................................ 39
ADAPTIVE FILTERING ..................................................................................................... 39
(a) Operational band .................................................................................................... 40
(b) Filter size.............................................................................................................. 40
8. SERVICE AND CALIBRATION .............................................................................................. 41
SERVICE .................................................................................................................. 41
CALIBRATION............................................................................................................. 41
ADJUSTMENT ............................................................................................................. 41
CLEANING ................................................................................................................ 41
END OF LIFE.............................................................................................................. 41
WARRANTY POLICY....................................................................................................... 41
RETURN POLICY .......................................................................................................... 42
9. APPENDICIES ................................................................................................................ 43
APPENDIX A-THCD-401 COMMAND SET SUMMARY ..................................................................... 43
APPENDIX B-FACTORY DEFAULTS ....................................................................................... 45
APPENDIX C-SETTINGS IN ‘RAS’COMMAND STRING ...................................................................... 46

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1. Instrument Overview
The THCD-401 is a multi-featured process display controller, designed to be flexible, able to adapt for use in
many processes. It is mainly based upon the THCD-101 signal channel display controller and shares most of its
features, but for multiple channels. The THCD-401 has four main channels. These can be used to operate flow
controllers or display the output from pressure transducers. The THCD-401 can also power these devices with
either ±15 VDC or +24 VDC.
The THCD-401 features a graphical LCD display which allows viewing the process variables in relevant units.
Any engineering units can be accommodated with a free text input. The display also allows for an easy-to-use
menu structure for configuration.
Interfaces to the THCD-401 include Ethernet, RS232 (via USB) or it can be used with just analog signals.
NOTICE:The instruments described in this manual may be available with multiple pin-outs.
Ensure that all electrical connections are correct.
NOTICE:The instruments described in this manual are designed for INDOOR use only.
NOTICE:The instruments described in this manual are designed for Class 2 installations in
accordance with IPC standards.
WARNING: There are no operator serviceable parts or adjustments inside the product.
CAUTION: If this equipment is used in a manner other than that specified, the protection
provided by the equipment may be impaired.

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Features
•Fully integrated 4 channel, full color display and power supply for mass flowmeters, mass flow
controllers, capacitance manometers and other pressure transducers
•USB, Ethernet and analog interfaces as standard
•Setpoint input for ‘slaved’ configurations
•±15 volt and 24 Volt transducer supply
•16-bit resolution
•Linearized data
•0-5 / 0-10 Volt, 4-20 mA set point output controlled from front panel or digital comms
•Voltage or current sensor support
•Capacitance touch front panel for quick and reliable data input
•Programmable alarm output (mechanical volt free changeover contact)
Accessories
(a) Cables
CB-12PCF-8-AM 8 Ft Cable; circular IP67 to THCD Pinout H
CB-12PCF-XXX-AM Custom length cable; circular IP67 to THCD Pinout H
65-576 AF-4-AM 4 Ft Cable, Pinout H
65-149 AF-8-AM 8 Ft Cable, Pinout H
65-148 AF-25-AM 25 Ft Cable, Pinout H
65-160 AF-50-AM 50 Ft Cable, Pinout H
65-193 AF-100-AM 100 Ft Cable, Pinout H
65-576-Special AF-XXX-AM Custom Length Cable, Pinout H
65-791 AF-8-AMU 8 Ft Cable, Black Connector, H pinout THCD to U pinout MFC
65-791-99 AF-XX-AMU Custom Length Cable, Pinout U
CB-AF-8-24VM 8 Ft Cable, Connects 9-Pin 200 or D-300B to THCD
CB-AF-XXX-24VM Custom Length Cable, Connects 9-Pin 200
CB-DAVC-8-AM 8 Ft Cable, THCD Pinout H to DAVC
CB-AF-8-HVG9M Connects THCD (15-pin) to HVG-2020A or B (9-pin), 8 Ft
CB-AF-XXX-HVG9M Connects THCD (15-pin) to HVG-2020A or B (9-pin), Custom Length
CB-USB-C Type-A computer receptacle to the USB-C connector
More information about the power supplies and cables can be found on the Hastings web site:
http://www.teledyne-hi.com

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2. Specifications
WARNING: Do not operate instruments exceeding the specifications listed below. Failure to
heed this warning could result in serious personal injury and/or damage to the equipment.
Power Supply
Line Voltage: 90 – 250 VAC
Line Frequency: 50 ~ 60 Hz
Consumption: less than 150 VA
Protection: 1.6 A anti-surge fuse 20 x 5 mm
Mains connector: IEC 320
Operating Conditions
Operating Temperature Range: 5°C to 60°C (41°F to 140°F)
Storage Temperature Range: -20°C to 70°C (-4°F to 158°F)
Maximum Relative Humidity: 95 %RH at 50°C (non-condensing)
Warm-up Time to Full Accuracy: 20 minutes (assumes unit already stabilized at ambient and excludes
transducer warm up time)
Measurement and Output
Power Supply Out: ± 15 VDC @ 300 mA max / channel
+ 24 VDC @ 350 mA max / channel
(Total transducer load not to exceed 40W)
DC Input Signal:±10 Volt (±10.8 Volt guaranteed) or
4-20 mA (3-21 mA guaranteed) factory option
16-bit ADC
Impedance > 1 MΩ (Voltage input)
Error: ± (0.02% of reading + 0.01% of full-scale) within ±10°C of
calibration temperature
DC Setpoint Output: 0 – 10.0 VDC (10.8 Volt guaranteed) (into >10 kΩ) or
4-20 mA (3-21 mA guaranteed) factory option
16-bit DAC
Error: ± (0.03% of reading + 0.02% of full-scale) within ±10°C of
calibration temperature
Override Close: -0.4 to -0.2 V, typ. -0.25 V
Override Open: 6.5 V to 8 V, typ. 7.0 V @ 5 V full scale
or >11.7 V, typ. 12.0V @10V FS

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Signal Retransmission: Buffered signal input
Alarm output:Mechanical changeover relay (max 50 VDC)
Display range: 0 to 999999 (6 characters, decimal point counts as character)
Transducer connectors (4): 15 pin ‘D’ type (female on THCD-401)
Serial: USB C (USB 2.0 over USB C connector)
Ethernet (TCP/IP): Configurable static IP address and subnet mask. Single host stack.
100 Base T
Mechanical
Housing Dimensions: 3.23” H x 6.65” W x 8.14” D (82mm x 169mm x 206mm)
Weight: 1.85 kg
Panel cut out: 2U x ½ 19” Rack

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3. Installation and Interconnections
This section contains the necessary steps to assist in getting a controller into operation as quickly and easily as
possible. Please read the following thoroughly before attempting to install the instrument.
Receiving Inspection
Prior to opening, inspect for obvious signs of damage to the shipment. Immediately advise the carrier who
delivered the shipment if any damage is suspected. If the shipment has arrived intact, carefully unpack the
gauge and any accessories that have been ordered. Check each component shipped with the packing list.
Ensure that all parts are present (i.e. gauge, power supply, cables, etc.). Optional equipment or accessories
will be listed separately on the packing list.
Mechanical Connections
The instrument is designed to be rack mounted. Note that the instrument must always be situated in such a
way as to enable adequate air circulation about the unit.
If a transducer was supplied with the THCD-401 a suitable cable may have been included.
NOTICE: The controller should be installed in a clean and careful manner. Take care not to drop the
product and avoid impacts to prevent damage.
Transducer Socket Pinout – 15 pin ‘D’ Type (x4)
Pin #
Designation
2 Signal High
5 Signal Low (Signal Common)
6 -15 V Supply Output
7 +15 V Supply Output
8 Command Output (V)
9 Command Output (mA)
12 0 V Supply Common
13 +24 V Power Supply
15 Earth / Chassis
Other Not Connected
If the transducer is being powered from another source (e.g. a mains powered supply) it will only be necessary
to connect to the two signal pins.
NOTE: The THCD-401 ties 0V Power (pin 5) and Signal Low (pin 12) together. But the separate pins allow
large, power related currents to be routed separately from signal currents on long cables.

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Interface Socket Pinout – Miniature 15 pin ‘D’ Type
Pin #
Designation
1
Ch1 Analog Output
2
Ch2 Analog Output
3
Ch3 Analog Output
4
Ch4 Analog Output
5
0 V (Signal Ground)
6
Ext. Setpoint 1 - *
7
Ext. Setpoint 2 - *
8
Ext. Setpoint 1 + *
9
Ext. Setpoint 2 + *
10
0v (Signal Ground)
11
TTL Input – Disable Menu
12
TTL Input – Disable Zero
13
Relay Com
14
Relay NO
15
Relay NC
* Not Yet implemented
USB Connector – USB Type-C
The connector supports USB-C 2.0 cables without the SuperSpeed pairs. Therefore, connecting a fully featured
USB-C 3.1 cable will not provide SuperSpeed functionality, although the cable will still work as per the USB 2.0
specification.
USB is provided for serial data comms and debugging purposes.

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Warnings
WARNING: Care must be taken to avoid any high voltages that may be present when dealing
with power supplies.
WARNING: Ensure correct mains supply rating and polarity. Failure to heed this warning could
result in serious personal injury and/or damage to the equipment.
WARNING: Instrument must always be grounded/earthed. Failure to heed this warning could
result in serious personal injury and/or damage to the equipment.
WARNING: Instrument must not be used when faulty, wet or near water. Failure to heed this
warning could result in serious personal injury and/or damage to the equipment.
WARNING:The THCD-401 is intended for use in non-condensing environments only. Condensate
or any other liquids which enter the gauge may destroy its electronic components and/or result
in serious personal injury.

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4. Front Panel Operation
Introduction
The front panel consists of a 480x272 TFT LCD color display with a capacitive touch membrane consisting of 11
‘switches’ and a ‘scroll wheel’. Each switch has legends on it (and in some cases above it) to indicate the
function of the switch. Most switches have some commonality between different screens, as detailed below.
For the purpose of the following sub-sections, the switches shall be referred to using the legends on the
membrane.
Common Switch Functions
The switches on certain types of screens and in certain modes, have the same functionality as detailed here:
(a) Menu screens
On all menu screens, the scroll wheel is used to navigate through the menu options. The ‘Func’ switch is used
to go back to the parent menu, except on the Main Menu screen where it goes back to the main screen. The
‘Enter’ switch actions the chosen menu selection to an editable or information screen (see HMI breakdown for
more details).
(b) Editable screens
On any screen that has editable fields, the scroll wheel will move the selection between the possible editable
fields. ‘Func’ goes back to the parent screen which is usually the menu that was used to get to the screen in
question. ‘Enter’ activates edit mode (see below).
(c) Edit mode
When in edit mode, the edit cursor appears on the first character in the editable field (the cursor is an
inverted box over the character being edited). If the field is bigger than 1 character, then switches ‘◄’ & ‘►’
are used to move left and right across the field. If the field is only one character (e.g. a Yes/No selection) or
has a rolling selection (e.g. for selection of a percentage) then ‘◄’ & ‘►’ do nothing.
The wheel is used to change the character being edited within the valid range (field position dependent).
‘Func’ cancels edit mode and returns the field to its previous value. ‘Enter’ accepts any changes to the field
and comes out of edit mode.

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HMI breakdown
Here follows a complete breakdown of all screens that appear whilst using the THCD-401:
(a) Main Screen
The main screen shows the currently enabled input data (with range, full-scale and calibration applied). Each
channel can be assigned a label (‘Chx’ above) and a units string. These are fully configurable in the
Configuration sub-menu screens (see later). If an input is over range (more than 15% above full-scale voltage)
then the data value is replaced with the over range error – “RANGE”. Also shown is the current mode of the
setpoint, if it’s not in AUTO mode (i.e. OPEN or CLOSED). If the relay has been tripped (i.e. the input has gone
above the configurable threshold) then a small bar is shown on the far left of the screen next to the channel
label.
When a channel is selected, its associated label is highlighted (as shown above on channel 4). This selection is
cleared automatically when a valid function is selected (e.g setpoint mode change), or after 5 seconds have
passed if no function is selected.
If a setpoint value is being changed, the channel selected splits into two lines, the bottom showing the input
data and the top showing the setpoint as it is being altered (as shown above on channel 4). The caret above the
Setpoint value is moved through the decades by the ‘◄’ or the ‘►’ switches.
Switch Functions:
Func No function
◄No function (in normal operation)
Moves decade caret left (when changing setpoint)
Rezero selected channel(s) (if held)
►Select all 4 channels (in normal operation)
Moves caret right (when changing setpoint)
‘Wheel’ Change setpoint value of selected channel
Ch1 to Ch4 Select Channel 1 to 4 (only one channel at a time)
Open, Auto, Close Change setpoint mode of selected channel(s) to OPEN, AUTO or CLOSE
Enter Enter the menu system

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(b) Main Menu Screen
The Main Menu screen provides access to the configuration sections of the THCD-401.
Switch Functions:
Func Go back to Main screen
◄No function
►No function
‘Wheel’ Move menu selection up and down
Ch1 to Ch4 No function
Open, Auto, Close No function
Enter Go to selected menu item page

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(c) Inputs Screen
The Inputs screen contains all user configuration items for each of the input channels. The screen shows the
items for one channel at a time and the Title on the 2nd from top row of the screen indicates which channel’s
information is selected. The ‘Chx’ buttons on the front panel select the input channel to configure. You
should, therefore, make sure you have selected the correct channel before editing anything else.
This screen allows you to assign a channel label to the input channel (up to 5 characters).
From this screen you can also configure the input for the transducer connected to it – you can set up a unit’s
label (up to 7 characters) and change the channels input range and full-scale voltage (see the Principles section
7.2 for more information on this).
The number of decimal places selected on the range field dictates the number of decimal places shown for the
input data for the channel on the Main screen. To reduce the number of decimal places, change the number
under the edit cursor to a decimal point and the system will auto format the field when the Enter switch is
pressed.
Switch Functions:
Func Go back to Main Menu screen (in normal operation)
Undo changes (in edit mode)
◄Move edit cursor left (in edit mode)
►Move edit cursor right (in edit mode)
‘Wheel’ Move edit field selection (in normal operation)
Change char under cursor (in edit mode)
Ch1 to Ch4 Select input configuration for channels 1 to 4, respectively.
Open, Auto, Close No function
Enter Go to edit mode for selected field (in normal operation)
Accept changes (in edit mode)

THCD-401 Instruction Manual Page 17 of 47
(d) Setpoint Screen
The setpoint screen allows for changing of the initial setpoint settings that the unit will use for each channel’s
setpoint on power up. As with the Inputs screen above, the screen shows the items for one setpoint channel at
a time and the Title on the 2nd from top row of the screen indicates which channel’s information is selected.
The ‘Chx’ buttons on the front panel select the input channel to configure. You should, therefore, make sure
you have selected the correct channel before editing anything else.
From this screen the initial settings that can be configured are the setpoint value (anything between 0 and full
scale) and setpoint mode (AUTO, OPEN, CLOSE). The source of a setpoint can also be changed, cycling between
INT, SLV1, SLV2, SLV3 & SLV4. For more information on setpoints, see the Principles section - 7.4.
Switch Functions:
Func Go back to Main Menu screen (in normal operation)
Undo changes (in edit mode)
◄Move edit cursor left (in edit mode)
►Move edit cursor right (in edit mode)
‘Wheel’ Move edit field selection (in normal operation)
Change char under cursor (in edit mode)
Ch1 to Ch4 Select setpoint settings for channels 1 to 4, respectively.
Open, Auto, Close No function
Enter Go to edit mode for selected field (in normal operation)
Accept changes (in edit mode)

THCD-401 Instruction Manual Page 18 of 47
(e) Ethernet Screen
The Communications screen allows you to edit the various Ethernet settings for remote communications with
the THCD-401.
For Ethernet comms, the IP address and subnet mask can be changed. Although any number can be cycled to
during edit mode, the THCD-401 will cap at 255.
Switch Functions:
Func Go back to Main Menu screen (in normal operation)
Undo changes (in edit mode)
◄Move edit cursor left (in edit mode)
►Move edit cursor right (in edit mode)
‘Wheel’ Move edit field selection (in normal operation)
Change char under cursor (in edit mode)
Ch1 to Ch4 No function
Open, Auto, Close No function
Enter Go to edit mode for selected field (in normal operation)
Accept changes (in edit mode)

THCD-401 Instruction Manual Page 19 of 47
(f) Filtering Screen
This screen allows the user to modify the band and buffer size of the adaptive filter.
The filter only applies to the display and comms output readings. The band is represented as a percentage of
FS and can be set between 0.00% (OFF) and 1.00% and to ON. The buffer size allows settings between 0 and 6
seconds of filtering.
For more information on the adaptive filter, see the Principles section (7.6)
Switch Functions:
Func Go back to Main Menu screen (in normal operation)
Undo changes (in edit mode)
◄Move edit cursor left (in edit mode)
►Move edit cursor right (in edit mode)
‘Wheel’ Move edit field selection (in normal operation)
Change char under cursor (in edit mode)
Ch1 to Ch4 No function
Open, Auto, Close No function
Enter Go to edit mode for selected field (in normal operation)
Accept changes (in edit mode)

THCD-401 Instruction Manual Page 20 of 47
(g) Relay screen
The Relay screen allows you to set the trip point for when the relay switches and set the source channel that is
used to check if the trip point has been reached. The relay also contains some hysteresis to stop the relay
‘chattering’. This is configurable from this screen as well and is represented as a percentage of full
scale of the source channel, with limits of 0.0% (i.e. no hysteresis) to 10.0%.
Switch Functions:
Func Go back to Main Menu screen (in normal operation)
Undo changes (in edit mode)
◄Move edit cursor left (in edit mode)
►Move edit cursor right (in edit mode)
‘Wheel’ Move edit field selection (in normal operation)
Change char under cursor (in edit mode)
Ch1 to Ch4 No function
Open, Auto, Close No function
Enter Go to edit mode for selected field (in normal operation)
Accept changes (in edit mode)