IntelliPack Series 841T

IntelliPack Series 841T
IntelliPack Series 841T
Transmitter and
Combination Transmitter/Alarm
Frequency or Pulse Counting Input
USER’S MANUAL
ACROMAG INCORPORATED
30765 South Wixom Road
P.O. BOX 437
Wixom, MI 48393-7037 U.S.A.
Tel: (248) 624-1541
Fax: (248) 624-9234
Copyright 1997, Acromag, Inc., Printed in the USA.
Data and specifications are subject to change without notice.
8500-569-G05A011
IntelliPack Series 841T Transmitter/Alarm User’s Manual
Frequency Input
___________________________________________________________________________________________
Safety Summary - Symbols on equipment:
!
1.0 INTRODUCTION
Means “Caution, refer to this manual for additional
information”.
The information contained in this manual is subject to change
without notice. Acromag, Inc., makes no warranty of any kind
with regard to this material, including, but not limited to, the
implied warranties of merchantability and fitness for a particular
purpose. Further, Acromag, Inc., assumes no responsibility for
any errors that may appear in this manual and makes no
commitment to update, or keep current, the information contained
in this manual. No part of this manual may be copied or
reproduced in any form, without the prior written consent of
Acromag, Inc.
Table of Contents
1.0 INTRODUCTION ………………………………..……..
DESCRIPTION …………………………………………
Key IntelliPack 841T Features………………………
ACCESSORY ITEMS ………………………………….
IntelliPack Configuration Software ...………………
IntelliPack Serial Port Adapter ……………………..
IntelliPack Cable………………………….…………..
IntelliPack Software Interface Package…..………..
2.0 PREPARATION FOR USE ….………………………..
UNPACKING AND INSPECTION ……………………
INSTALLATION ………………………………………..
Jumper Installation (Voltage Outputs)……………..
Mounting ………………………………………………
Electrical Connections ………………………………
3.0 MODULE CONFIGURATION ………………………..
FIELD CONFIGURATION…………………….……….
4.0 THEORY OF OPERATION …………………………..
5.0 SERVICE AND REPAIR ………………………………
SERVICE AND REPAIR ASSISTANCE …………….
PRELIMINARY SERVICE PROCEDURE ..………….
6.0 SPECIFICATIONS …………………………………….
MODEL NUMBER DEFINITION………………………
INPUT SPECIFICATIONS …………………………….
ANALOG OUTPUT SPECIFICATIONS …………..…
RELAY OUTPUT SPECIFICATIONS………………...
ENCLOSURE/PHYSICAL SPECIFICATIONS ……..
APPROVALS..…………………………………………..
ENVIRONMENTAL SPECIFICATIONS ……………..
FIELD CONFIGURATION AND CONTROLS.……….
HOST COMPUTER COMMUNICATION……………..
SOFTWARE CONFIGURATION……………………..
List of Drawings
Simplified Schematic (4501-682)……………………….…
Functional Block Diagram (4501-692)…….………………
Computer to IntelliPack Connections (4501-643) ……….
Electrical Connections (4501-683) ……………….…..…..
Interposing Relay Conn. & Contact Pro. (4501-646)……
Enclosure Dimensions (4501-642) …………………..……
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These instructions cover hardware functionality of the
transmitter models listed in Table 1. Supplementary sheets are
attached for units with special options or features.
Table 1: Models Covered in This Manual
Series/
-Options/Output/
-Factory
Input/Type Enclosure/Approvals1
Configuration2
3
841T
-0500
-C
841T
-15003
-C
Notes (Table 1):
1. Agency approvals include CE, UL Listed, and cUL Listed.
2. Include “-C” suffix to specify the factory configuration option.
Otherwise, no suffix is required for standard configuration.
3. Model 841T-0500 units have transmitter functionality only,
while 841T-1500 transmitters include an alarm relay.
Module programming, transmitter operation, and the
IntelliPack Configuration Software is covered in the IntelliPack
Transmitter Configuration Manual (8500-570).
DESCRIPTION
Series 841T transmitters and combination transmitter/alarms
are members of the popular Acromag IntelliPack transmitter &
alarm family. The 841T will condition periodic or pulse waveform
signals, and provide an isolated process current or voltage
output, plus an optional alarm relay (Model 841T-1500). The unit
will accept unipolar or bipolar frequency input signals from 0Hz to
50KHz, or function as an event counter with a range from 0 to
65535 pulses. The output is an isolated process current or
voltage, plus an optional Single-Pole Double-Throw (SPDT)
electro-mechanical alarm relay (841T-1500 only). All IntelliPacks
contain an advanced technology microcontroller with integrated
downloadable flash memory and EEPROM for non-volatile
program, configuration, calibration, and parameter data storage.
Units are fully reconfigurable via our user-friendly Windows 95
or NT IntelliPack Configuration Program. Field reconfigurability
is also possible with module push-buttons and status LED’s.
Once configured, these modules may operate independent of the
host computer for true embedded monitoring and control.
Modules may be field connected for bipolar or unipolar,
periodic or pulse waveforms. Programmable pullup or pulldown
resistors, plus +8.2V/+12V excitation supplies, are available at
the input to interface with a variety of input sensor or transducer
types. The optional SPDT alarm relay (Model 841T-1500) has a
yellow LED on the front of the module that provides a visual
indication of the high or low alarm condition. Additionally, “Run”,
“Status”, and “Zero/Full-Scale” LED’s provide local feedback of
operating mode, system diagnostics, and field configuration
status. Front panel push buttons are used to facilitate field
reconfiguration, or to reset a latched alarm, without having to
connect a host computer.
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IMPORTANT SAFETY CONSIDERATIONS
It is very important for the user to consider the possible adverse
effects of power, wiring, component, sensor, or software failures
in designing any type of control or monitoring system. This is
especially important where economic property loss or human life
is involved. It is important that the user employ satisfactory
overall system design. It is agreed between the Buyer and
Acromag, that this is the Buyer's responsibility.
Windows 95 & NT are registered trademarks of Microsoft Corp.
-2-
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
Key IntelliPack 841T Features
•
Fully Isolated - The input, power, and output circuits, and
optional relay contacts are all isolated from each other for
safety and increased noise immunity.
•
Wideband Frequency Input - This model accepts
frequency inputs from 0Hz to 50KHz. Inputs below 1Hz are
represented as 0Hz.
•
Flexible Pulse Counter Function - The built-in event
counter function counts pulses on the positive or negative
edge, upward, in the range 0-65535, and includes an
external counter reset. The counter may wrap around from
65535, latch at a programmed count value, or automatically
reset itself to 0 after reaching a programmed count value.
The counter may also be reset remotely via the PC or via a
counter reset control signal wired to the unit.
•
Input Filtering - Inputs include hysteresis. Other filtering
modes include averaging (frequency inputs), debounce
(event counter), relay time delay (alarms), and deadband
(alarms). This helps to reduce the negative effects of
measurement jitter, false counts, electro-mechanical relay
contact bounce, plus other mechanical effects.
•
Universal Analog Outputs - Supports current output
ranges of 0-20mA, 4-20mA, & 0-1mA, and 0-5V or 0-10V
outputs. Current outputs will drive up to 550Ω, typical.
•
Flexible Interface Supports Many Input Types - The
programmable pull-up/down resistors & selectable excitation
provides support for a variety of input types including TTL,
dry contact, low or high side transistor switches, magnetic
pickups, proximity sensors, and open drain or collector
switches.
•
Supports Bipolar or Unipolar Input Signals - Interfaces
with both zero crossing and non-zero crossing signals.
Voltage threshold and relative hysteresis are user
selectable.
•
Convenient Input Excitation - Input includes +8.2V & +12V
excitation supplies for powering sensors & transducers (up
to 24mA).
•
Normal Or Reverse Acting Output - The output of this
transmitter may be software configured for a normal acting
(ascending), or reverse acting (descending) response.
•
Self-Diagnostics - Built-in routines operate upon power-up
for reliable service, easy maintenance, and troubleshooting.
•
Wide-Range DC-Powered - This device receives power
over a wide DC supply range and the power terminal is
diode-coupled. This makes the product useful for systems
with redundant supplies and/or battery back-up.
•
Wide Ambient Operation - The unit is designed for reliable
operation over a wide ambient temperature range.
•
Hardened For Harsh Environments - The unit will operate
reliably in harsh industrial environments and includes
protection from RFI, EMI, ESD, EFT, and surges, plus low
radiated emissions per CE requirements.
•
Convenient Mounting, Removal, & Replacement - The
DIN-rail mount and plug-in type terminal blocks make
module removal and replacement easy.
•
High-Resolution Precise D/A Conversion - Transmitter
output is driven with a high-resolution, low noise, SigmaDelta, Digital-to-Analog Converter (Σ-∆ DAC) for high
accuracy and reliability.
•
LED Indicators - Used to indicate operating, alarm, system
diagnostic, and field configuration status.
The module uses a comparator and logic gate to convert an
input signal into a digital TTL pulse stream. A microcontroller
samples the pulse stream and measures its frequency or counts
the number of pulses. An external counter reset terminal is also
included. The module completes the user specified input to
output transfer equation and controls an optically isolated Digitalto-Analog Converter (DAC) to produce a corresponding process
current or voltage output signal. The microcontroller also drives a
separate alarm circuit to control the relay contacts.
Flexible transmitter functionality and an optional limit alarm
combined in a single device, plus convenient reprogrammability,
makes this instrument extremely powerful and useful over a
broad range of applications. Input averaging may be used with
frequency inputs to smooth input frequency jitter. Debounce may
be used with pulse counting inputs to eliminate counting false
pulses due to electromechanical relay contact bounce and other
mechanical effects. The analog output may produce a normal
(ascending), or reverse (descending) response.
The relay of 841T-1500 models may be configured as a limit
alarm with deadband, with latching or non-latching contacts, and
for failsafe or non-failsafe modes. A programmed relay time
delay may be implemented to filter transients and minimize
nuisance alarms.
All IntelliPack modules are designed to withstand harsh
industrial environments. They feature RFI, EMI, ESD, EFT, and
surge protection, plus low temperature drift, wide ambient
temperature operation, and isolation between input, power,
output, and relay contacts. They also have low radiated
emissions per Conformity European (CE) requirements. As a
wide-range DC-powered device, the unit may be powered from
DC power networks incorporating battery back-up. Additionally,
the input power terminal is diode-coupled, providing reverse
polarity protection. This allows the unit to be connected to
redundant power supplies, or several units to safely share a
single DC supply.
Units are DIN-rail mounted and removable terminal blocks
facilitate ease of installation and replacement, without having to
remove wiring. Transmitter power, output, and relay wiring are
inserted at one side of the unit, while input wiring is inserted at
the other side. Connectors are an industry standard screw clamp
type and accept a wide range of wire sizes.
The safe, compact, rugged, reconfigurable, and reliable
design of this transmitter makes it an ideal choice for control
room and field applications. Custom IntelliPack module
configurations are also possible (please consult the factory).
Key IntelliPack 841T Features
•
Agency Approvals - CE, UL Listed, & cUL Listed.
•
Easy Windows Configuration - Fully configurable via our
user friendly Windows 95 or NT Configuration Program.
•
Nonvolatile Reprogrammable Memory - Module uses an
advanced technology microcontroller with integrated, nonvolatile, downloadable flash memory. This allows the
functionality of this device to be reprogrammed many times.
•
Convenient Field Reprogrammability - Adjustment to
transmitter zero and full scale, plus alarm setpoint and
deadband can be made via module push-buttons and LED’s,
thus facilitating in-field changes without having to connect a
host computer (frequency inputs only).
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IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
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IntelliPack Cable (Model 5030-902)
Alarm Relay Model Only (841T-1500)
•
•
•
•
•
•
Powerful Alarm Functionality - May be programmed for
limit alarms with deadband (frequency inputs only), latching/
non-latching contacts, and failsafe/non-failsafe operation.
An event counter may be configured with a high alarm.
High-Power SPDT Relay Contacts - Includes a SinglePole-Double-Throw (SPDT) electro-mechanical alarm relay
for switching up to 230VAC & 5A.
Failsafe or Non-Failsafe Relay Operation - May be
configured for failsafe or non-failsafe relay operation.
Configurable Setpoint With Deadband - Includes
programmable deadband (frequency inputs only) to help
eliminate relay “chatter” and prolong contact life.
Configurable Latching or Momentary Alarms - May be
configured for automatic alarm reset, or a latching alarm
with manual push-button or software reset.
Configurable Relay Time Delay Filters Transients Useful for increased noise immunity and to filter transients.
This 6-wire cable is used to connect the SPI port of the
IntelliPack Serial Port Adapter to the IntelliPack. This cable
carries the SPI data and clock signals, reset signal, and +5V
power and ground signals. The cable is 7 feet long and has a 6wire RJ11 plug at both ends which snap into jacks on the Serial
Port Adapter and IntelliPack module.
IntelliPack Software Interface Package (Model 800C-SIP)
The IntelliPack Software Interface Package combines the
Configuration Software (5030-881), Alarm Configuration Manual
(8500-563), Transmitter Configuration Manual (8500-570), Serial
Port Adapter (5030-913), and Cable (5030-902), into a complete
kit for interfacing with IntelliPack Alarms and Transmitters.
2.0 PREPARATION FOR USE
ACCESSORY ITEMS
UNPACKING AND INSPECTION
The following IntelliPack accessories are available from
Acromag. Acromag also offers other standard and custom
transmitter and alarm types to serve a wide range of applications
(please consult the factory).
Upon receipt of this product, inspect the shipping carton for
evidence of mishandling during transit. If the shipping carton is
badly damaged or water stained, request that the carrier's agent
be present when the carton is opened.
If the carrier's agent is absent
when the carton is opened and the
contents of the carton are damaged,
keep the carton and packing material
for the agent's inspection. For
repairs to a product damaged in
shipment, refer to the Acromag
Service Policy to obtain return
instructions. It is suggested that
salvageable shipping cartons and
packing material be saved for future
use in the event the product must be
shipped.
IntelliPack Configuration Software (Model 5030-881)
IntelliPack alarms and transmitters are configured with this
user-friendly Windows 95 or NT Configuration Program. This
software package includes the IntelliPack Alarm Configuration
Manual (8500-563) and IntelliPack Transmitter Configuration
Manual (8500-570). These manuals describe software operation
and various alarm and transmitter functions in detail. All
transmitter and alarm functions are programmable and
downloadable to the module via this software. Non-volatile
memory within the IntelliPack provides program, configuration,
and data storage.
IntelliPack Serial Port Adapter (Model 5030-913)
This module is physically protected with packing material and
electrically protected with an anti-static bag during shipment.
However, it is recommended that the module be visually
inspected for evidence of mishandling prior to applying power.
This adapter serves as an isolated interface converter
between the EIA232 serial port of the host computer and the
Serial Peripheral Interface (SPI) port of the IntelliPack module. It
is used in conjunction with the Acromag IntelliPack Configuration
Software to program and configure the modules. This adapter
requires no user adjustment, no external power, and operates
transparent to the user. It receives its input power from the
IntelliPack module. The adapter has a DB9S connector that
mates to the common DB9P serial port connector of a host
computer. The adapter also has a 6-wire RJ11 phone jack to
connect to the IntelliPack alarm module via a separate
interconnecting cable (described below). Refer to Drawing
4501-635 for computer to IntelliPack connection details.
This circuit utilizes static sensitive components and should only
be handled at a static-safe workstation.
INSTALLATION
The transmitter module is packaged in a general purpose
plastic enclosure. Use an auxiliary enclosure to protect the unit in
unfavorable environments or vulnerable locations, or to maintain
conformance to applicable safety standards. Stay within the
specified operating temperature range. As shipped from the
factory, the unit is factory calibrated for all valid input ranges and
has the default configuration shown in Table 2 below:
WARNING: Applicable IEC Safety Standards may require that
this device be mounted within an approved metal enclosure or
sub-system, particularly for applications with voltages greater
than or equal to 75VDC or 50VAC.
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IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
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Electrical Connections
Table 2: 841T Default Factory Configuration
PARAMETER
CONFIGURATION/CALIBRATION
Input Range
Frequency 0 to 50KHz
Samples
1 (No Input Averaging)
Resistor
Pull-Up
Threshold
Bipolar 0.0V (zero crossing)
with +/-25mV Hysteresis
Event Debounce
5ms
Event Edge
Rising
Counter Termination
Auto-Reset
Output Range
0 to 10VDC (Jumper Installed)
Output Mode
Normal Acting (Ascending Signal)
Excitation Supply
8.2V (Use of excitation is optional)
Relay Mode & Setpoint High Limit at 50KHz
Deadband
500Hz
Reset Type
Automatic Reset (Non-Latching)
Operating Mode
Failsafe
Relay Time Delay
100ms
Shaded entries apply to Model 841T-1500 units which also
include alarm functionality.
Terminals can accommodate wire from 12-24 AWG (stranded
or solid copper). Strip back wire insulation 1/4-inch on each lead
before installing into the terminal block. Input wiring should be
shielded twisted-pair. Since common mode voltages can exist on
signal wiring, adequate wire insulation should be used and proper
wiring practices followed. It is recommended that transmitter
output and power wiring be separated from the input signal wiring
for safety, as well as for low noise pickup. Note that input, power,
output, and relay terminal blocks are a plug-in type and can be
easily removed to facilitate module removal or replacement
without removing individual wires. If your application requires
voltage output, you must install a jumper between the output “I+”
and “JMP” terminals (jumper is installed at the factory). Remove
this jumper for current output applications. Be sure to remove
power and/or disable the load before unplugging the terminals to
uninstall the module, installing or removing jumpers, or before
attempting service. All connections must be made with power
removed.
Your application may differ from the default configuration and
will require that the transmitter be reconfigured to suit your needs.
This is accomplished with Acromag’s user-friendly Windows
95/NT Configuration Program and Serial Port Adapter.
Configuration is normally done prior to field installation since field
configurability via the module’s push-buttons is generally limited
to zero, full-scale, setpoint, and dropout adjustments (frequency
inputs only). See the Transmitter Configuration Manual (8500570) for instructions.
CAUTION: Risk of Electric Shock - More than one
disconnect switch may be required to de-energize the
equipment before servicing.
1.
Jumper Installation (For Voltage Output Only)
Power: Refer to Electrical Connections Drawing 4501-683.
Variation in power supply voltage within rated limits has
negligible effect on module accuracy. For supply
connections, use No. 14 AWG wires rated for at least 75°C.
The power terminal is diode-coupled for reverse polarity
protection.
2. Frequency or Pulse Counting Inputs: Connect input(s) per
Drawing 4501-683. Observe proper polarity (see label for
input type). Excitation is provided at the input terminals. For
TTL or low-side transistor switches, use the on board pullup
resistor. For high-side transistor switches (open drain or
collector), use the on board pull-down resistor. For dry
contact switches, use the on-board excitation supply and pullup or pull-down resistors, as required.
For voltage output, a short jumper must be installed between
the output “I+” and “JMP” terminals. A jumper wire is included
with the unit and is already installed between the output “JMP”
and “I+” terminals. Verify the position of this jumper if your
application requires output voltage. Remove this jumper for
current output applications. Refer to the Electrical Connections
Drawing 4501-683.
WARNING: If input frequency exceeds the full-scale beyond
110%, sample aliasing could cause measurement error and
generate false alarms. Limit the maximum frequency to less
than 110% of full-scale to avoid these errors.
Mounting: Refer to Enclosure Dimensions Drawing 4501-642 for
mounting and clearance dimensions.
DIN Rail Mounting: This module can be mounted on "T"
type DIN rails. Use suitable fastening hardware to secure the
DIN rail to the mounting surface. Units may be mounted
side-by-side on 1-inch centers for limited space applications.
3. Analog Output Connections: Wire outputs as shown in
Electrical Connections Drawing 4501-683. For voltage
output, you must also install a jumper between the output “I+”
and “JMP” terminals. Remove this jumper for current output.
"T" Rail (35mm), Type EN50022: To attach a module to this
style of DIN rail, angle the top of the unit towards the rail and
locate the top groove of the adapter over the upper lip of the
rail. Firmly push the unit towards the rail until it snaps solidly
into place. To remove a module, first separate the input
terminal block(s) from the bottom side of the module to
create a clearance to the DIN mounting area. Next, insert a
screwdriver into the lower arm of the DIN rail connector and
use it as a lever to force the connector down until the unit
disengages from the rail.
Note: For sensitive applications, high frequency noise may
be reduced by placing a 0.1uF capacitor directly across the
load.
4. Output Relay Contacts (841T-1500 Only): Wire relay
contacts as shown in Electrical Connections Drawing 4501683. See the “Alarm Relay Specifications” for power
capacity. If necessary, an interposing relay can be used to
switch higher currents as illustrated in Interposing Relay
Connection Drawing 4501-646.
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IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
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Note: The module’s input frequency range must already be
set via the IntelliPack Configuration Software. Frequencies
outside of the configured input range will not be accepted for
zero, full-scale, setpoint, or dropout calibration. Since input
frequencies cannot be validated during field programming,
entering incorrect signals can produce an undesired output
response. Install a jumper between the output “I+” and
“JMP” terminals for voltage output (default), remove this
jumper for current output.
Electromechanical Relay Contact Protection: To
maximize relay life with inductive loads, external protection is
required. For DC inductive loads, place a diode across the
load (1N4006 or equivalent) with cathode to (+) and anode to
(-). For AC inductive loads, place a Metal Oxide Varistor
(MOV) across the load. See Relay Contact Protection
Drawing 4501-646 for details.
IMPORTANT (Frequency Inputs only): Noise and/or jitter
on the input signal has the effect of reducing (narrowing) the
instrument’s deadband and may produce contact chatter.
The long term effect of this will reduce the life of mechanical
relays. To reduce this undesired effect, you should increase
the effective deadband. Note the input averaging function of
this transmitter may also be used to reduce contact chatter.
Transmitter/Alarm General Field Programming Procedure
The following procedure uses the corresponding zero/fullscale (labeled “Z/FS”) and relay (labeled “RLY”) LED’s to indicate
which parameter is being programmed. A constant ON zero/fullscale LED refers to zero configuration (input for 0% output), a
flashing ON/OFF zero/full-scale LED refers to full-scale/span
configuration (input for 100% output). A constant ON relay LED
indicates setpoint adjustment, a flashing ON/OFF relay LED
indicates dropout/deadband adjustment. Refer to Table 3.
5. Grounding: See Electrical Connections Drawing 4501-683.
The module housing is plastic and does not require an earth
ground connection. However, there are mounting positions
on the output terminals to connect a cable shield, plus earth
ground. These connections are isolated from the internal
circuit and are recommended to minimize noise and help
protect the unit from damaging I/O transients.
CAUTION: Do not insert sharp or oversized objects into the
switch openings as this may damage the unit. When depressing
the push-buttons, use a blunt tipped object and apply pressure
gradually until you feel or hear the tactile response.
WARNING: For compliance to applicable safety and
performance standards, the use of shielded cable is
recommended as shown in Drawing 4501-683. Further, the
application of earth ground must be in place as shown in
Drawing 4501-683. Failure to adhere to sound wiring and
grounding practices may compromise safety & performance.
1.
2.
3.
3.0 MODULE CONFIGURATION
4.
The IntelliPack module needs to be configured for your
application. Configuration is done using Acromag’s Windows 95
or NT IntelliPack Configuration Program and Serial Port
Adapter. Transmitter calibration and configuration details are
included in the IntelliPack Transmitter Configuration Manual
(8500-570). Field calibration is only applicable to frequency input
types. Field adjustment of transmitter zero & full-scale (scaling
parameters), plus alarm setpoint & dropout (Model 841T-1500),
can be accomplished via the module’s push-buttons and LED’s in
the absence of a host computer.
5.
FIELD CONFIGURATION (Frequency Inputs Only)
6.
This program mode allows adjustment to key transmitter
calibration and alarm parameters in the field, without having to
connect a host computer. Field reprogrammability of zero & fullscale, plus alarm setpoint & deadband (“-1500” units) is
accomplished via the transmitter/alarm module’s “SET”, “MODE”,
“UP”, and “DOWN” push buttons, and the zero/full-scale and
relay LED’s (see Dwg. 4501-642).
7.
8.
Equipment Required
•
An accurate frequency input source adjustable over the
configured input range. This source must be accurate
beyond the module specifications for best results. Use a
source with an output impedance of 100Ω or less. An
accurate current or voltage meter is required to monitor the
output level. This meter must be accurate beyond the
module specifications for best results.
-6-
Connect a frequency source to the input, as required
(refer to Electrical Connections Drawing 4501-683).
Apply power, and the module’s green “Run” LED will light.
Press and hold the “MODE” push button until the green
“Run” LED turns OFF and the yellow “Zero/Full-Scale” LED
turns ON. In this mode, the unit is ready to accept a zero
input for the transmitter (scaling input for 0% output). If you
do not wish to change the zero parameter, skip to step 7.
Adjust the input source near the zero level according to your
input range (value must be within input range selected). For
best results, use a frequency of 1Hz or greater. Unmeasurable frequencies below 1Hz are interpreted as 0Hz.
Press the “UP” or “DOWN” push-button one time to cause
the module to auto-adjust its output level to the
corresponding output zero according to the output range
selected. If the output is not exactly at the zero level, then
each successive depression of the “UP” or “DOWN” switch
will increment or decrement the output signal by a small
amount. Holding the switch depressed will increase the
amount of increment or decrement.
Press the “SET” push-button to accept the zero value.
Note every time “SET” is pressed, the yellow “Status” LED
will flash once and the zero output will be captured.
Press the “MODE” push button one time. The yellow “Zero/
Full-Scale” LED will flash on/off, indicating the unit is ready
to accept the full-scale value for setting the span (scaling
input for 100% output). If you do not wish to change the fullscale parameter, skip to step 11.
Adjust the input frequency to the full-scale level according to
your input range (the value must be within the input range
selected). The module uses the zero and full-scale levels to
set the span (span = full-scale - zero).
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
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Transmitter/Alarm Field Programming Procedure…continued
Notes (Field Program Procedure)…continued:
9.
2. To summarize, the green “Run” LED is turned off in field
configuration mode. The yellow zero/full-scale LED is ON or
FLASHING when the corresponding zero or full-scale value is
being set in field configuration mode and turned OFF in run
mode. The yellow alarm LED is ON or FLASHING when the
corresponding setpoint or dropout/deadband level is being set
in field configuration mode.
3. If the transmitter/alarm is in field configuration mode and no
push buttons are pressed after 2 minutes, then the module
will return to the run mode, the green “Run” LED will light, and
no changes to any program parameters will be made.
4. Latching alarms require a push button reset to exit the alarm
state (this may also be accomplished under software control).
Use the up or down push-button on the front of the module to
reset a latched alarm relay.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Press the “UP” or “DOWN” push-button one time to cause
the module to auto-adjust its output level to the
corresponding full-scale output for the output range
selected. If the output is not exactly at the full-scale level,
then each successive depression of the “UP” or “DOWN”
switch will increment or decrement the output signal by a
small amount. Holding the switch depressed will increase
the amount of increment or decrement.
Press the “SET” push-button to accept the full-scale value.
Note every time “SET” is pressed, the yellow “Status” LED
will flash once and the full-scale output will be captured.
If configuring an 841T-0500 model which has no alarm
function, skip steps 12-17 and jump ahead to step 18.
Press the “MODE” push button one time until the yellow
zero/full-scale LED goes out and the yellow relay LED turns
ON (see Table 4). In this mode, the unit is ready to accept
an input setpoint level for the alarm. If you do not wish to
change the setpoint, skip to step 15.
Adjust input source to the High or Low alarm setpoint level.
Press the “SET” push button to accept the setpoint. Note
every time “SET” button is pressed, the yellow status LED
will flash once and the value at the input will be captured.
Press the “MODE” push button one time and the yellow
relay LED should start flashing (see Table 4). This means
the unit is ready to accept the dropout level for the alarm. If
you do not wish to change the dropout, skip to step 18.
Adjust the input frequency to the desired dropout level.
Press the “SET” push button to accept the input dropout
level. Note every time “SET” is pressed, the yellow status
LED will flash once and the value at the input will be
captured. The module will use the difference between the
setpoint and dropout values to calculate relative deadband.
Press the “MODE” push button one time to complete the
program sequence and return to run mode. The green
“RUN” LED will turn ON, the yellow “Zero/Full-Scale” LED
will be OFF, and the yellow alarm LED will be ON or OFF
according to the alarm status. The module will now assume
a transfer function based on the zero and full-scale values
just set. The setpoint and dropout of 841T-1500 units is
used to determine the alarm deadband. Note that until
“SET” is pressed, pushing “MODE” will only toggle between
the zero & full-scale, plus setpoint & dropout adjustment
modes (841T-1500 units), without affecting their values.
Further, if no push-buttons are depressed for a period
greater than 2 minutes, then the module will automatically
revert to run mode (green “Run” LED will light) and no
changes will be made to the original zero, full-scale, and
optional setpoint & dropout settings.
4.0 THEORY OF OPERATION
Refer to the Block Diagram of Drawing 4501-682 and
4501-692 to gain a better understanding of the circuit. Note that
these transmitters use a comparator and logic gate to convert the
input signal into a digital pulse stream. The comparator is used
to provide the threshold and hysteresis, while the logic gate is
used to “square” the waveshape. The microcontroller samples
the input pulse stream while tracking the number of internal
sampling clock cycles to determine the period of the input signal
and derive its frequency. The sampling clock rate is 666666.667
cycles per second, or 1.5us per cycle. For frequencies below
100Hz, the number of sampling clock cycles in one input wave
cycle is used to determine the period of the input. For
frequencies in the range of 100Hz to 1000Hz, the number of
sampling clock cycles in eight input wave cycles is used to
determine the input period. As such, internal resolution
decreases with increasing frequency and is generally better than
the display resolution for the range, except near the upper end of
the 100Hz and 1000Hz ranges, where it approaches half the
display resolution for these ranges. For the 50KHz range, the
number of input wave cycles in a gated 1 second period is used
to calculate the input period. The microcontroller will compute
the input frequency and complete the transfer equation according
to the transmitter type and its embedded function. It sends a
corresponding output signal to an optically isolated Digital-toAnalog Converter (DAC). The DAC then updates its current or
voltage outputs in response. The microcontroller also compares
the signal value to the limit value and completes all necessary
alarm functions per its embedded program (841T-1500 units
only). The embedded configuration and calibration parameters
are stored in non-volatile memory integrated within the
microcontroller. Only the functions required by an application are
actually stored in memory—new functionality can be downloaded
via the IntelliPack Configuration Program and Serial Port Adapter.
A wide input switching regulator (isolated flyback mode) provides
isolated +5V and +16V power to the circuit, plus an isolated +15V
output circuit supply.
Notes (Field Program Procedure):
1. In field configuration mode, the yellow zero/full-scale LED
(Z/FS) and relay LED (RLY) are used to indicate which
program parameter is being adjusted as illustrated in Table 3:
Table 3: Field Configuration LED Program Indication
LED INDICATOR
Constant ON
FLASHING
Yellow Zero/Full-Scale
(labeled “Z/FS”)
Zero
Full-Scale
841T-1500 Only
Yellow Relay
High or Low
High or Low
(labeled “RLY”),
Setpoint
Dropout
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IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
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5.0 SERVICE AND REPAIR
6.0 SPECIFICATIONS
841T-1500-C, Frequency/Pulse Input, I/V Output, SPDT Relay
841T-0500-C, Frequency/Pulse Input, I/V Output
CAUTION: Risk of Electric Shock - More than one
disconnect switch may be required to de-energize the
equipment before servicing.
General: The IntelliPack Model 841T-0500 is a DC-powered
SERVICE AND REPAIR ASSISTANCE
transmitter which conditions a single frequency or pulse count
input, and provides an isolated voltage or current output.
Isolation is supplied between the sensor input, the output,
and power. The 841T-1500 adds a SPDT, Form C, electromechanical relay, which provides a local limit alarm function
with isolated relay contacts. This transmitter/alarm is DIN-rail
mounted.
This module contains solid-state components and requires no
maintenance, except for periodic cleaning and transmitter
configuration parameter (zero, full-scale, setpoint, deadband, etc)
verification. Since Surface Mounted Technology (SMT) boards
are generally difficult to repair, it is highly recommended that a
non-functioning module be returned to Acromag for repair. The
board can be damaged unless special SMT repair and service
tools are used. Further, Acromag has automated test equipment
that thoroughly checks and calibrates the performance of each
module. Please refer to Acromag’s Service Policy Bulletin or
contact Acromag for information on service parts and repair.
The unit is configured and calibrated with our user-friendly
Windows 95 or NT IntelliPack Configuration Program.
Push-buttons on the module allow adjustment to the zero and
full-scale points for the transmitter, plus setpoint and
deadband adjustment for modules with the alarm option. All
calibration and configuration information is stored in nonvolatile reprogrammable memory in the module.
PRELIMINARY SERVICE PROCEDURE
Before beginning repair, be sure that all installation and
configuration procedures have been followed. The unit routinely
performs internal diagnostics following power-up or reset. During
this period, all LED’s will turn ON momentarily, and the green
“Run” LED flashes. If the diagnostics complete successfully, the
“Run” LED will stop flashing after approximately one second and
remain ON. This indicates that the unit is operating normally. If
the “Run” LED continues to flash, then this is indicative of a
problem. In this case, use the Acromag IntelliPack Configuration
Software to reconfigure the module or download its firmware and
this will usually cure the problem. If the diagnostics continue to
indicate a problem (a continuously flashing green LED), or if other
evidence points to a problem with the unit, an effective and
convenient fault diagnosis method is to exchange the
questionable module with a known good unit.
MODEL NUMBER DEFINITION
Transmitters are color coded with a white label. The prefix
“8” denotes the IntelliPack Series 800, while the “T” suffix
specifies that this device is primarily a process transmitter.
841T: Transmits and isolates a single frequency or pulse
counting input.
-X500: The four digits of this model suffix represent the following
options, respectively:
X = 1 with Alarm Relay, X = 0 without Alarm Relay;
5 = Output: Transmitter Voltage or Current;
0 = Enclosure: DIN rail mount;
0 = Approvals: Pending (please consult the factory).
The IntelliPack Serial Port Adapter also contains a red LED
visible at the small opening in the enclosure to the right of the
RJ11 receptacle. If this LED is OFF or Flashing and power is
ON, then a communication interface problem exists. Note that
the adapter receives its power from the IntelliPack module. A
constant ON LED indicates a properly working and powered
serial interface adapter.
INPUT SPECIFICATIONS
Unit must be wired and configured for the intended input type
and range (see Installation Section for details). The following
paragraphs summarize this model’s input types, ranges, and
applicable specifications.
Acromag’s Application Engineers can provide further
technical assistance if required. When needed, complete repair
services are available from Acromag.
Frequency Input: Select 0 to 100.00Hz, 0 to 1000.0Hz, or 0 to
50KHz. Unit accepts unipolar or bipolar (zero crossing) input
signals. Frequency is accurately measured to a minimum of
1Hz (50KHz range), or 0.5Hz (100Hz & 1KHz ranges).
Unmeasurable input frequencies below 1Hz are represented
as 0Hz. Status LED will flash if input frequency is
unmeasurable (below 1Hz), or if the signal amplitude is
insufficient for detection.
Pulse Counter Input: 100Hz maximum counting rate. Minimum
pulse width is 5ms (5ms ON and 5ms OFF for 10ms period or
100Hz). Pulse count range is 0 to 65535 pulses. Unit
accepts unipolar or bipolar input pulses and samples the
input at a 1.2ms rate.
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IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
Table 6: Input Measurement & Alarm Accuracy
Nominal
Accuracy Over
Input Range
Accuracy at 25°C
Temperature
±0.04Hz (f ≤ 50Hz)
0 to 100.00Hz
±0.02Hz (f ≤ 50Hz)
±0.06Hz (f > 50Hz)
±0.04Hz (f > 50Hz)
±0.4Hz (f ≤ 500Hz)
0 to 1000.0Hz
±0.2Hz (f ≤ 500Hz)
±0.6Hz (f > 500Hz)
±0.4Hz (f > 500Hz)
0 to 50000Hz
+/-10Hz
+/-15Hz
0 to 65535
+/-1 pulse
+/-1 pulse
pulses
Unipolar Signal Configuration:
Input Amplitude: 0 to 3V minimum range, 0 to 100VDC
maximum range.
Input Threshold: Configurable for 1.5V or 5V, typical.
Input Hysteresis: Configurable for ±25mV (at 1.5V
threshold), or ±83mV (at 5.0V threshold), typical.
Bipolar Signal Configuration:
Input Amplitude (0-20KHz): ±50mV minimum (with
±25mV hysteresis) or ±150mV minimum (with ±83mV
hysteresis), to ±100V peak-to-peak maximum.
Input Amplitude (Above 20KHz): ±100mV minimum
(with ±25mV hysteresis) or ±200mV minimum (with
±83mV hysteresis), to ±100V peak-to-peak maximum.
Input Threshold: 0mV nominal, 0.01V typical with
±25mV hysteresis; 0.03V typical with ±83mV hysteresis.
Input Hysteresis: Configurable for ±25mV or ±83mV,
typical.
Input Impedance: 35KΩ, typical.
Input Response Time/ Input Filter Bandwidth: -3dB at 35KHz,
typical. See also Input Acquisition Time, Relay Response
Time, and Output Update Rate for more information.
Input Acquisition Time: Frequency inputs: 100mS to 1 second
(varies with input frequency). Pulse counting inputs: Input
polling every 5ms (samples event at a 1.2ms rate).
Input Pullup/Pulldown: Software selectable 2.7KΩ input pullup
to +5V and a 1KΩ input pulldown to return.
Input Debounce (Pulse counting inputs only): 0 (disabled) to
1 second, configurable in 5ms increments. You must select
appropriately with respect to input signal bandwidth and
characteristics.
Input Averaging (Frequency inputs only): Running average of
1 (disabled by default), 2,4,8, or 16 input samples, software
configured. Input averaging > 1 will increase the response
time.
Noise Rejection (Normal Mode): Not Applicable.
Noise Rejection (Common Mode): 80dB @ 60Hz, typical with
100Ω input unbalance.
Input Excitation Supply: +12VDC or +8.2VDC, typical at 10mA
load (current limited to approximately 24mA).
Counter Reset Input: TTL or open collector/drain signal (5V
logic) may be wired directly to the input terminals of the
module to reset the counter value to 0. Signal is active low.
Minimum reset pulse width is 5mS. Note that the counter can
also be reset to zero by clicking on the “Reset Event Count”
button of the IntelliPack Configuration Software.
Frequency Input Reference Test Conditions: 0 to 50KHz
Bipolar 5Vpp input; Threshold 0.0V; Hysteresis +/-25mV;
Input Averaging = 1; Ambient = 25°C; Power Supply =
24VDC; Output = 4-20mA, Ascending (4mA represents 0Hz;
20mA represents 50KHz). For 841T-1500 units, additionally:
Relay High Limit at 50KHz; 250Hz Deadband; Automatic
relay reset; Failsafe mode; Relay Time Delay of 100mS.
Pulse Counting Input Reference Test Conditions: 0 to 25K
pulses; Unipolar 0 to 5V input; Threshold 1.5V; Hysteresis +/25mV; Count positive pulses with Automatic Reset; Input
Debounce = 0; Ambient = 25°C; Power Supply = 24VDC;
Output = 4-20mA, Ascending (4mA represents 0 pulses;
20mA represents 25K pulses). For 841T-1500 units,
additionally: Relay High Limit at 25K pulses; Automatic relay
reset; Failsafe mode; Relay Time Delay of 100mS.
Minimum Input Pulse Width: Frequency inputs: 10us
Pulse counting inputs: 5ms.
Input Overvoltage Protection: Bipolar Transient Voltage
Suppressers (TVS).
Resolution: The sampling mechanism used for the 100Hz
and 1000Hz ranges results in decreased internal resolution
with increased frequency. This resolution is generally better
than the display resolution indicated in Table 4. However, as
the input frequency approaches the upper end of the 100Hz &
1000Hz ranges, the reduced internal resolution effectively
approaches twice the display resolution noted in Table 4 for
these ranges.
Table 4: Input Range Resolution
Input Range
Display Resolution
0 to 100.00Hz
0.01Hz
0 to 1000.0Hz
0.1Hz
0 to 50000Hz
1Hz
0 to 65535 Pulses
1 Pulse
Input Zero/Span Range Turn-Down (See Table 5): The
configuration software may be used to calibrate an output
response to input zero & full-scale values that are subsets of
their nominal input range end points. For best results, select
the smallest input range that contains the desired zero and
full-scale input signals. Refer to Table 5.
Table 5: Input Zero/Full-Scale Span Selection
Nominal
Recommended Input Span Calibration
Input Range
Range
0 to 100.00Hz 10Hz min span within 0 to 100Hz range.
0 to 1000.0Hz 100Hz min span within 0 to 1KHz range.
0 to 50000Hz
1000Hz min span within 0-50KHz range.
0 to 65535
1000 pulses min span recommended. All
Pulses
spans must include 0 as low endpoint.
Input & Alarm Accuracy: Module timing is crystal based for
best accuracy, temperature stability, and minimum long term
drift. For input and alarm accuracy refer to Table 6. Table 6
does not include analog output or overall accuracy (refer to
Table 7). Note that the sampling mechanism used for the
100Hz and 1000Hz ranges results in decreased resolution
near the upper end of the range, thus decreasing effective
accuracy in this range.
ANALOG OUTPUT SPECIFICATIONS
These units contain an optically isolated DAC (Digital-toAnalog Converter) that provides a process current or voltage
output. Calibration can occur with respect to any output range,
but only one of the outputs may operate at a time.
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IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
Note: For sensitive applications, high frequency noise may be
reduced by placing a 0.1uF capacitor directly across the load.
SPDT Alarm Relay Specifications (841T-1500 Units Only):
Electrical Life - CSA Ratings:
25VDC, 5A, 105 operations, resistive.
48VDC, 0.8A, 105 operations, resistive.
240VDC, 0.1A, 105 operations, resistive.
120VAC, 5A, 3x104 operations, resistive.
240VAC, 5A, 3x104 operations, resistive.
Note: To control a higher amperage device, such as a pump,
an interposing relay may be used (see Interposing Relay
Connections Drawing 4501-646).
Contact Material: Silver-cadmium oxide (AgCdO).
Initial Dielectric Strength: Between open contacts:
1000VAC rms.
Expected Mechanical Life: 20 million operations. External
contact protection is required for use with inductive loads
(see Contact Protection Drawing 4501-646).
Relay Response: For an input step change from 10% of
span on one side of an alarm point to 5% of span on the
other side of the alarm point, the relay contacts will switch
tracking the input acquisition time (see Input Acquisition Time
specification). If configured with additional Relay Delay Time,
this will add to the relay response time.
Voltage Output Specifications:
Output Range: 0-10V DC, 0-5V DC.
Output Accuracy: See Table 7.
Output Current: 0-10mA DC maximum.
Output Impedance: 1Ω.
Output Resolution: See Table 7.
Output Short Circuit Protection: Included
Current Output Specifications:
Output Ranges: 0-20mA DC, 4-20mA DC, or 0-1mA DC.
Output Maximum Current: 21.6mA typical.
Output Accuracy: See Table 7.
Output Compliance: 10V Minimum, 12V Typical.
Output Resolution: See Table 7.
Output Load Resistance Range: 0 to 550Ω, typical.
Table 7: Analog Output Range Resolution & Accuracy
Accuracy1,2 at 25°C
Output Range3
Resolution
Percent-of-Span
Output
Overall4
0 to 20mA DC
0.0025%
0.025%
0.050%
4 to 20mA DC
0.0025%
0.025%
0.050%
0 to 1mA DC
0.0370%
0.100%
0.125%
0 to 10V DC
0.0025%
0.025%
0.050%
0 to 5V DC
0.0040%
0.050%
0.075%
ENCLOSURE/PHYSICAL SPECIFICATIONS
See Enclosure Dimensions Drawing 4501-642. Units are
packaged in a general purpose plastic enclosure that is DIN rail
mountable for flexible, high density (approximately 1” wide per
unit) mounting.
Notes (Table 7):
1. Voltage outputs unloaded. Loading will add “I*R” error.
2. Software calibration produces high accuracy.
3. All current ranges are subsets of a 0-24mA DAC range
which allows for under and over range capability. The 05V range is a subset of the 0-10V range.
4. For overall accuracy (input to output) add 0.025% to
output accuracy, assuming full input range is utilized.
Dimensions: Width = 1.05 inches, Height = 4.68 inches, Depth
= 4.35 inches (see Drawing 4501-642).
DIN Rail Mounting (-xx0x): DIN rail mount, Type EN50022; “T”
rail (35mm).
Connectors: Removable plug-in type terminal blocks;
Current/Voltage Ratings: 15A/300V; Wire Range: AWG #1224, stranded or solid copper; Separate terminal blocks are
provided for input, power, output, and relay contacts. For
supply connections, use No. 14 AWG copper wires rated for
at least 75°C.
Case Material: Self-extinguishing NYLON type 6.6 polyamide
thermoplastic, UL94 V-2, color beige; general purpose NEMA
Type 1 enclosure.
Printed Circuit Boards: Military grade FR-4 epoxy glass.
Shipping Weight: 1 pound (0.45 Kg) packed.
Digital-to-Analog Converter: Analog Devices AD420AR-32, 16bit Σ-∆. Monotonic to 16 bits.
DAC Integral Non-Linearity: ±0.002% (±1.4LSB) of span typical,
0.012% (±7.9LSB) of span maximum, utilizing full DAC output
span (0-24mA).
DAC Output Temperature Drift: Better than ±20ppm/°C
Typical, ±50ppm/°C Maximum.
Output Update Rate: Frequency inputs: 1 to 10 per second
(varies with input frequency). Pulse counting inputs: 10 per
second.
Output Settling Time: 10ms to 0.1% of full-scale, varies with
load.
APPROVALS (-xxx0)
RELAY OUTPUT SPECIFICATIONS
0:
Model 841T-1500 units include a SPDT electromechanical
alarm relay which provides a set of high reliability, Form C
(Normally Open and Normally Closed), SPDT contacts. The
relay operates as a limit alarm with control of deadband/
hysteresis, latching/non-latching contacts, failsafe/non-failsafe
modes, plus relay time delay.
Agency Approvals - CE, UL Listed, and cUL Listed. UL3121
First Edition, CSA C22.2 No. 1010.1-92, Low Voltage
Directive (72/23/EEC), EMC (89/336/EEC) Directives.
Product approval is limited to general safety requirements of
the above standards.
Warning: This product is not approved for hazardous location
applications.
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IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
ENVIRONMENTAL SPECIFICATIONS
Surge Immunity: Complies with IEC1000-4-5 Level 3 (2.0KV)
and European Norm EN50082-1.
Radiated Emissions: Meets or exceeds European Norm
EN50081-1 for class B equipment.
Operating Temperature: -25°C to +70°C (-13°F to +158°F).
Storage Temperature: -40°C to +85°C (-40°F to +185°F).
Relative Humidity: 5 to 95%, non-condensing.
Power Requirements: +10V Minimum to +36V DC Maximum.
Current draw is a function of supply voltage (see Table 8).
Current shown in Table 8 assumes that the input excitation
supply is delivering 24mA, the output circuit is at 20mA, and
the IntelliPack Serial Interface Adapter is connected. For
841T-1500 units, the current shown also assumes that the
alarm relay is energized. An internal diode provides reverse
polarity protection.
FIELD CONFIGURATION AND CONTROLS
In-field program capability of transmitter zero & full-scale (all
models), plus alarm setpoint & dropout levels (841T-1500 only),
is accomplished with module push-buttons and LED indicators
(frequency input types only). This is useful for making
adjustments in the absence of a host computer. Note: The unit
must first be configured using the Configuration Software before
its configuration can be changed in the field. Pulse counting
input parameters cannot be changed in the field via the module
push-buttons.
CAUTION: Do not exceed 36VDC peak, to avoid
damage to the module.
Table 8: 841T Supply Current
Supply
Model
Model 841T-1500
Voltage
841T-0500
(Relay Energized)
10V
225mA
265mA
12V
180mA
205mA
15V
145mA
160mA
24V
95mA
100mA
36V
70mA
75mA
Note: Disconnecting the Serial Port Adapter will reduce
current draw 7% on average, while unloading the input
excitation supply will reduce current consumption about 12%.
Module Push Buttons (See Drawing 4501-642 for Location):
Mode - Used to change mode of field configuration.
Set - Used to accept input data during field configuration.
Up - Used to increment output level during field configuration.
Used to reset a latched alarm relay in operating mode.
Down - Used to decrement output level during field
configuration. Used to reset a latched alarm relay in
operating mode.
LED Indicators (See Drawing 4501-642 for Location):
Operating (Run) Mode
Run (Green) - Constant ON indicates power is applied and
unit is operating normally. Flashing ON/OFF indicates
unit is performing diagnostics (first second following
power-up), or has failed diagnostics (after a few
seconds).
Zero/Full-Scale (Yellow) - Turned OFF in Run mode.
Relay (Yellow) - Constant ON indicates alarm condition for
relay. During field configuration, this LED has a different
function (see below).
Status (Yellow) - Flashes if input frequency is unmeasurable
(below 1Hz), or if input amplitude is insufficient for
detection. Frequencies less than 1Hz (50KHz range) or
0.5Hz (100 & 1000Hz ranges) are interpreted as 0Hz.
Field Configuration Mode (Frequency Inputs Only)
Run (Green) - OFF in this mode.
Zero/Full-Scale (Yellow) - ON or FLASHING if zero or
full-scale is being adjusted in this mode (See Table 4).
Relay (Yellow) - ON or FLASHING if alarm setpoint or
dropout is being adjusted in this mode (See Table 4).
Status (Yellow) - Blinks each time “SET” is pressed to
capture an I/O signal in this mode.
IMPORTANT – External Fuse: If unit is powered from a supply
capable of delivering more than 1A to the unit, it is recommended
that this current be limited via a high surge tolerant fuse rated for
a maximum current of 1A or less (for example, see Bel Fuse
MJS1).
Power Supply Effect:
DC Volts: Less than ±0.001% of output span change per
volt DC for rated power supply variations.
60/120 Hz Ripple: Less than 0.01% of output span per volt
peak-to-peak of power supply ripple.
Isolation: Input, power, output, and optional relay output circuits
are isolated from each other for common-mode voltages up
to 250VAC, or 354V DC off DC power ground, on a
continuous basis (will withstand 1500VAC dielectric strength
test for one minute without breakdown). This complies with
test requirements outlined in ANSI/ISA-82.01-1988 for the
voltage rating specified.
Installation Category: Designed to operate in an Installation
Category (Overvoltage Category) II environment per IEC
1010-1 (1990).
Radiated Field Immunity (RFI): Complies with IEC1000-4-3
Level 3 (10V/M, 80 to 1000MHz AM & 900MHz keyed) and
European Norm EN50082-1.
Electromagnetic Interference Immunity (EMI): No relay trips
will occur beyond ±0.25% of input span from setpoint and no
output shifts > 0.25% of output span will occur under the
influence of EMI from switching solenoids, commutator
motors, and drill motors.
Electrical Fast Transient Immunity (EFT): Complies with
IEC1000-4-4 Level 3 (2KV power; 1KV signal lines) and
European Norm EN50082-1.
Electrostatic Discharge (ESD) Immunity: Complies with
IEC1000-4-2 Level 3 (8KV/4KV air/direct discharge) to the
enclosure port and European Norm EN50082-1.
HOST COMPUTER COMMUNICATION
Host Computer Communication: Configuration information
is downloaded from the host computer through one of its
EIA232 serial ports. This port must be connected to the
module through an Acromag IntelliPack Serial Port
Adapter, which serves as an isolated interface converter
between EIA232 and the IntelliPack SPI port (standard
RJ11 6-wire phone jack).
Baud Rate (EIA232): 19.2K baud.
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IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
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Output - Mode: Select a normal acting (ascending), or
reverse acting (descending) output response.
Output Calibration: The configuration software can be used
to calibrate the output conditioning circuit of this module.
SOFTWARE CONFIGURATION
Units are fully reprogrammable via our user-friendly Windows
95 or NT IntelliPack Configuration Program (Model 5030-881).
A cable (5030-902) and converter (5030-913) are required to
complete the interface (Software Interface Package 800C-SIP).
See Drawing 4501-643.
Transmitter Configuration
Scaling: Enter an input value for 0% output and an input
value for 100% output (these are also field adjustable).
Scaling is performed after averaging and converts the
engineering units of the input range (or a portion of the
input range) to 0 to 100%. That is, scaling allows virtually
any part of the selected input range to be scaled to 0%
and 100% at the output. For event counters, the input
value for 100% output is the maximum count value.
Minimum Input Spans: 10% of the selected input frequency
range. For pulse/event counting inputs, no minimum is
imposed, but 1000 pulses is recommended to maintain
reasonable output resolution.
Transmitter Computation Function: This model provides
proportional computation only and no optional
computations are provided. Each input sample is
converted into a directly proportional output update.
End Points Configuration: Transmitter: Zero/Full-Scale
Input maps to Zero/Full-Scale Output. Event counters
always have a count of 0 as the “zero” input and the
maximum count as the input for 100% output.
The following transmitter and alarm attributes are selectable
via the IntelliPack Configuration Software. Refer to the
IntelliPack Transmitter Configuration Manual (8500-570) for a
detailed explanation of these attributes and their application.
Input Configuration
Input - Range: This transmitter can be configured to accept
any one of the input frequency range types described in
the Input Specifications, or as an event counter, using the
IntelliPack Configuration Program.
Input - Samples (For Averaging Frequency Inputs Only):
Input averaging can be set to 1 (default), 2, 4, 8, or 16.
The value selected indicates the number of input signal
acquisitions used in computing a running average. This
is useful in helping to filter out transients. Note the
response time will be increased by the factor selected.
Input - Resistor (Pullup/Pulldown): Utilize the optional onboard pullup or pulldown circuits according to the input
type.
Input - Threshold (Bipolar/Unipolar): Select either bipolar
(zero crossing), or unipolar (non-zero crossing) input
signal types. Two levels of input threshold and hysteresis
are available for each input type.
Event Counter - Debounce (0-1000ms): 0 (disabled) to 1
second, configurable in 5ms increments. You must
select appropriately with respect to input signal
bandwidth and characteristics. Used to eliminate
counting false pulses due to electro-mechanical relay
contact bounce and other mechanical effects.
Event Counter - Edge (Rising/Falling): Select either the
rising edge (positive), or falling edge (negative) of the
input pulses to be counted.
Event Counter - Termination (Wrap, Auto-Reset, Latch):
Select none (wrap), auto-reset, or latching. None will
cause the counter to wrap around to zero from 65535.
Auto-reset will cause the counter to be automatically
reset to 0 when the value scaled to 100% is reached.
Latching will cause the counter to latch at the value
scaled to 100%. Any counter can be reset to zero at any
time by applying an active low counter reset signal to the
CRST terminal, or by clicking on the “Reset Counter”
button of the IntelliPack Configuration Software.
Excitation Voltage: Use is optional. Select either +8.2V or
+12V DC. Internally limited to 24mA, typical. Available
at the EXC+ and EXC- terminals of the module.
Input Calibration: The configuration software can be used
to calibrate the input timing of this module.
Alarm Configuration (Model 841T-1500)
The model 841T-1500 may be configured for simple limit
alarms. You may also refer to the IntelliPack 800A alarm
family for dedicated alarm modules that support other
operating functions.
Limit Alarm - Input: The input signal range to the alarm is
the full range for the configured input type, irregardless of
the scaled range. For example, if the 0 to 100.00Hz input
range was selected using the configuration program, the
alarm can be programmed to any setpoint from 0 to
100Hz. If input averaging is used (samples > 1), then the
averaged input value will be used by the alarm.
Limit Alarm - Mode: Select a High limit or Low limit for the
limit alarm function of this model. In this mode, the relay
will enter the alarm state when either the user-defined
high or low setpoint is exceeded for the specified amount
of time (this allows input transients to be filtered). Relay
remains in the alarm state until the input signal has
retreated past the defined setpoint, plus any deadband
(frequency inputs only), for the specified amount of time.
A high limit is assumed for the event counter input.
Limit Alarm - Setpoint: A high or low setpoint may be
assigned to the relay and is programmable over the
entire input range (this is also field adjustable). The relay
will trip on an increasing input signal for a high setpoint,
and on a decreasing input signal for a low setpoint. A
high setpoint is assumed for the event counter input.
Analog Output Configuration
Output - Range: Unit can be configured for either a voltage
or current output range. A jumper must also be installed
between the output “I+” and “JMP” terminals for voltage
output (remove this jumper for current output).
Voltage (Jumper Required): 0 to 10V DC, 0 to 5V DC
Current: 0 to 20mA DC, 4 to 20mA DC, or 0 to 1mA DC
- 12 -
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
Other IntelliPack Configuration Software Capabilities
Limit Alarm - Deadband (Frequency Inputs Only):
Deadband is associated with the setpoint and is
programmable over the entire input range (this is also
field adjustable). Deadband determines the amount the
input signal has to return into the “normal” operating
range before the relay contacts will transfer out of the
“alarm” state. Deadband is normally used to eliminate
false trips or alarm “chatter” caused by fluctuations in the
input near the alarm point. Note that deadband may also
apply to latched alarms. If the alarm is latching, it is
recommended that the deadband be set to a minimum.
Deadband has no application to the event counter input.
In addition to configuring all features of the module described
above, the IntelliPack Configuration Software includes additional
capabilities for testing and control of the module as follows:
•
•
•
IMPORTANT: Noise and/or jitter on the input signal
has the effect of reducing (narrowing) the
instrument’s deadband and may produce contact
chatter. Another long term effect of contact chatter
is a reduction in the life of the mechanical relay
contacts. To reduce this undesired effect, increase
the deadband setting.
•
•
•
•
Alarm Indicator: A yellow LED (labeled “RLY”) for the relay
provides visual status indication of when the relay is in
alarm (LED is ON in alarm). This LED is also used in
field configuration mode to indicate whether setpoint or
deadband is being adjusted.
Relay - Time Delay (0-4000ms): Programmable from 0
milliseconds to 4 seconds in 100ms increments for this
model (typically used to help filter input transients and
avoid nuisance alarming). A minimum delay of 100ms is
recommended for increased noise immunity and
conformance to applicable safety standards. This delay
does not apply to control of the transmitter’s analog
output.
Relay - Operating Mode (Failsafe/Non-Failsafe): User
configurable for “failsafe” operation (relay deenergized in
alarm state), or non-failsafe operation (relay energized in
alarm state). Failsafe mode provides the same contact
closure for alarm states as for power loss, while nonfailsafe mode uses alarm contact closure opposite to
power loss conditions.
Relay - Reset (Automatic/Latching): The relay may be
configured to automatically reset when the input retreats
past its setpoint and deadband, or the relay may latch
into its alarm state. A push-button reset switch is located
on the front of the module (use the up or down arrow
buttons) and is used to exit the latched state (this may
also be accomplished under software control).
•
Monitors the input and output signal values and allows
polling to be turned on or off.
Allows a configuration to be uploaded or downloaded to/from
the module. Also provides a means to rewrite a module’s
firmware if the microcontroller is replaced or a module’s
functionality is updated.
Provides controls to separately calibrate the input and output
stages and restore the original factory input or output
calibration in case of error.
Provides controls to reset a module and reset a latched
alarm.
Provides a control to reset the event/pulse counter to zero.
Provides a control to adjust a transmitter’s output signal
independent of the input signal.
Allows optional user documentation to be written to the
module. Documentation fields are provided for tag number,
comment, configured by, location, and identification
information. This information can also be uploaded from the
module and printed.
Allows a module’s configuration to be printed on an easy to
read two page form, including user documentation.
For complete information on the IntelliPack Configuration
Software, refer to Transmitter Configuration Manual 8500-570.
Notes:
- 13 -
- 14 -
23
22
26
25
24
21
PD
INPUT ISOLATION
BIPO
UNIP
DIV
INPUT SIGNAL
CONDITIONING
PUP
+5V
EXCITATION
SUPPLIES
+13.5V +9.7V
INPUTS INCLUDE TRANSIENT
SUPPRESSION DEVICES NOT
SHOWN.
BRTN
INPUT
FQ-IN
CRTN
CRST
EXC-
EXC+
SCREW TERMINAL NUMBER
FRONT PANEL
LED'S AND SWITCHES
EEPROM & FLASH
MEMORY
MICROCONTROLLER
AND SUPPORT LOGIC
+5V
+16V
+15V
16-BIT DAC
FILTER
INPUT
CIRCUIT
POWER
OUTPUT
CIRCUIT
POWER
SERIES 841T SIMPLIFIED SCHEMATIC
1.5V
REF
COMPARATOR
AND
HYSTERESIS
COUNTER
RESET
+5V
CONFIGURATION PORT
RJ11, 6-CONDUCTOR
43
44
45
NC
N.C.
COM
N.O.
I+
RTN
V+
JMP
RELAY
4501-682B
POWER
OUTPUT
INSTALL JUMPER
FOR VOLTAGE OUT
OUTPUT
SHIELD
DC+
10-36VDC
DC-
POWER ISOLATION
32
31
POWER ISOLATION
OUTPUT ISOLATION
33
34
35
36
OUTPUT ISOLATION
42
SHIELD ISOLATION
41
SHLD
FILTER
10-36VDC
SWITCHER
GAIN
RELAY
46
RELAY ISOLATION
MODEL 841T-1500 UNIT ONLY
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
Counts
ALARM OUTPUT
BLOCK
Alarm
On/Off
- 15 Percent
OUTPUT BLOCK
Percent
Counts
D/A
4501-692A
Output Ranges
(Configuration Software)
0-10V DC or 0-5V DC or
0-20mA DC, 4-20 mA DC or 0-1mA DC
ANALOG OUTPUT
Output Trim (Z & FS)
Configuration Software or
Module Push Buttons
Normal / Reverse Acting
MODEL: 841T-0500 / 841T-1500
TRANSMITTER FUNCTIONAL BLOCK DIAGRAM
RANGE ADJUST
BLOCK
PV
Percent
(0 to 100%)
Transfer Function:
Linear/Proportional
RELAY CONTACT OUTPUTS
SPDT (Form C)
Relay (811T-1500): SPDT
K1
Configuration Variables:
High or Low Limit Alarm
Relay Alarm Delay
Automatic Reset or Latching
Failsafe/Non-Failsafe
Wide Range Configuration
(Zero/Full-Scale Input for Zero/Full-Scale Output)
Configuration Software or
Module Push Buttons
Analog OUTPUT type
Alarm
Counts
SENSOR
INPUT BLOCK
PV
Input Sensor Types:
Frequency
Pulse
Counting
MODEL: 811T-1500 ONLY
PV
PV
SP & DB
BLOCK
Alarm
ANALOG INPUT
PV
ON/OFF
Counts
Digital Process Variable (PV)
Engineering Units:
Frequency (Hz)
Counts
Reading on PC Monitor
LIMIT ALARM
Setpoints and Deadbands
(Full Sensor Input Range)
Configuration Software or
Push Buttons
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
- 16 +5V
DOUT
DINP
SCLK
RST
COM
MODEL 5030-913
1
2
3
4
5
6
6 FOOT CABLE
CABLE SCHEMATIC
(REFERRED TO AS REVERSE TYPE)
1
2
3
4
5
6
RJ11 PLUG
(6 CONDUCTOR)
MODEL 5030-902
SERIAL PORT ADAPTER
TO INTELLIPACK CABLE
RJ11 PLUG
(6 CONDUCTOR)
RJ11 JACK
(6 CONDUCTOR)
ATTACH ADAPTER TO COM1 OR COM2 ON THE PC.
COM PORTS ARE SOFTWARE CONFIGURED.
INTELLIPACK
SERIAL ADAPTER
SERIES 8XXT
COMPUTER CONNECTIONS
9 PIN CONNECTOR (DB9S)
MATES TO THE DB9P
CONNECTOR AT THE
SERIAL PORT OF THE
HOST COMPUTER.
PC RUNNING
ACROMAG
CONFIGURATION
SOFTWARE
PERSONAL COMPUTER
RUNNING WINDOWS 95 OR NT
RLY
ST
POWER
+
4501-643A
CONFIGURATION PORT: FOR
MODULE CONFIGURATION
(SEE USER'S MANUAL).
SET SWITCH
DOWN/RESET SWITCH
UP/RESET SWITCH
RELAY LED (YELLOW)
ZERO/FS LED (YELLOW)
MODE SWITCH
RUN/PWR LED (GREEN)
STATUS LED (YELLOW)
INTELLIPACK
MODULE
R
SET
MODE
TB2
Z/FS
RUN
Acromag
TB3
10 TO 36VDC
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
+
- 17 -
OPEN
DRAIN
OPEN
COLLECTOR
SAFETY GUIDELINES MAY REQUIRE THAT THIS DEVICE BE HOUSED IN AN
APPROVED METAL ENCLOSURE OR SUB-SYSTEM, PARTICULARLY FOR
APPLICATIONS WITH VOLTAGES GREATER THAN OR EQUAL TO 75VDC/50VAC.
SEE TB2 INPUT
CONNECTIONS
ON PAGE 2
REMOVABLE
(PLUG-IN TYPE)
TERMINAL BLOCKS
TB2
PWR
TB3
EARTH
GROUND
+
10 TO 36VDC
DC
POWER
4501-683C
PG 1 OF 2
(SEE INPUT CONNECTIONS ON PAGE 2)
INPUT CONNECTIONS
SHIELDED CABLE
TB2
WARNING:
FOR COMPLIANCE TO APPLICABLE SAFETY AND PERFORMANCE STANDARDS,
THE USE OF SHIELDED CABLE IS RECOMMENDED AS SHOWN. ADDITIONALLY,
THE APPLICATION OF EARTH GROUND MUST BE IN PLACE AS SHOWN IN THIS
DRAWING. FAILURE TO ADHERE TO SOUND WIRING AND GROUNDING
PRACTICES MAY COMPROMISE SAFETY AND PERFORMANCE.
SWITCH
EXC+
21 22 23 24 25 26
FQ-IN
TTL/CMOS
R
EXC-
OR
BRTN
OR
THE COUNTER RESET SIGNAL (CRST)
IS AN ACTIVE-LOW (5ms MIN PULSE)
TTL LOGIC, OPEN COLLECTOR, OR
CRTN OPEN DRAIN INPUT.
INPUT
OUTPUT
CRST
CRST
EXC-
TB3
FQ-IN
BRTN
SET
COM
EXC+
N.O.
CRTN
OR
TB2
N.C.
SHIELD
SHLD
RELAY
I+
841T-1500
36 35 34 33 32 31
JMP
SPDT CONTACTS
MODE
46 45 44 43 42 41
V+
N.O.
Z/FS
RLY
ST
RTN
N.O.
N.C.
COM
RUN
Acromag
TB4
DC
LOAD
LOAD
NO CONNECTION
SHLD OUTPUT
SHIELD
SEE RELAY
CONNECTIONS
AT LEFT
EARTH
RELAY
GROUND
CONN.
(841T-1500)
SHIELDED CABLE
DC
REMOTE/EXTERNAL
COUNTER RESET
EARTH
GROUND
TB4
TB4
RL
EARTH
GROUND
+ +
I
VOLTAGE OUTPUT JUMPER
N.C.
RELAY CONNECTIONS
MODEL 841T-1500
ELECTRICAL CONNECTIONS
MODEL 841T-1500
MODEL 841T-0500
VOLTAGE
OUT LOAD
OR
CURRENT
OUT LOAD
ANALOG OUTPUT
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
TB4
_
OR
- 18 -
V+
SHIELDED
CABLE
TB2
TB2
TB2
CRTN
CRST
EXC-
BRTN
FQ-IN
EXC+
CRTN
CRST
EXC-
BRTN
FQ-IN
EXC+
CRTN
CRST
EXC-
BRTN
FQ-IN
EXC+
UNI
ENABLE
PULL-DOWN
+V
BIPO
ENABLE
UNIPOLAR
INPUT
ENABLE
PULL-UP
ENABLE
UNIPOLAR
INPUT
V+
PUP
2.7K
UNI
UNI
ENABLE UNIPOLAR
OR BIPOLAR INPUT
1K
SEE NOTE 2
V+
SHIELDED
CABLE
SHIELDED
CABLE
DRY CONTACT
TTL
SEE NOTE 2
SEE NOTE 2
Magnetic
Pickup
SHIELDED
CABLE
MAGNETIC PICKUP
PDWN
NOTE 2: THIS GROUND CONNECTION IS RECOMMENDED FOR BEST
RESULTS. IF SENSORS ARE INHERENTLY CONNECTED TO GROUND,
USE CAUTION AND AVOID MAKING ADDITIONAL GROUND CONNECTIONS
WHICH COULD GENERATE GROUND LOOPS AND MEASUREMENT ERROR.
SEE NOTE 2
OR
SHIELDED
CABLE
LOW-SIDE SWITCH
(Open Collector/Drain)
SEE NOTE 2
V+
HIGH-SIDE SWITCH
(Open Collector/Drain)
SEE NOTE 2
Frequency
Generator
+
SHIELDED
CABLE
FREQUENCY INPUT
TB2
TB2
TB2
CRTN
CRST
EXC-
BRTN
FQ-IN
EXC+
CRTN
CRST
EXC-
BRTN
FQ-IN
EXC+
CRTN
CRST
EXC-
BRTN
UNI
<10mA TYP
TURCK
BI5-G18-AP6X
ENABLE
UNIPOLAR
INPUT
ENABLE
PULL-UP
TB2
CRTN
CRST
EXC-
BRTN
FQ-IN
EXC+
SHIELDED
CABLE
TB2
CRTN
CRST
EXC-
BRTN
FQ-IN
EXC+
UNI
PUP
2.7K
V+
UNI
ENABLE
UNIPOLAR
INPUT
ENABLE
PULL-UP
ENABLE
UNIPOLAR
INPUT
SEE NOTE 2
TURCK
BI5-M18-AD4X
SHIELDED
CABLE
TB2
CRTN
CRST
EXC-
BRTN
FQ-IN
EXC+
ENABLE
UNIPOLAR
INPUT
1K
4501-683C
PG 2 OF 2
UNI
ENABLE
PULL-DOWN
1K
PDWN
PDWN
ENABLE
PULL-DOWN
SOURCING PROXIMITY SENSOR (2-Wire)
SEE NOTE 2
TURCK
BI5-G18-AN6X
SINKING PROXIMITY SENSOR
(3-Wire, Open Collector or Drain)
SHIELDED
CABLE
SOURCING PROXIMITY SENSOR
(3-Wire, Open Collector or Drain)
SEE NOTE 2
ENABLE
UNIPOLAR
INPUT
ENABLE
PULL-UP
V+
PUP
2.7K
UNI
PUP
2.7K
V+
+V
BIPO
INPUT
FQ-IN BIPOLAR
EXC+ ENABLE
MODEL 841T EXAMPLE INPUT CONNECTIONS AT TB2
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
2
1
3
4
8
5
7
6
+
DC RELAY POWER
2
3
1
4
8
5
- 19 7
6
ACV
USE MOV (METAL OXIDE VARISTOR)
MOV
AC LOAD
+
USE DIODE 1N4006 (OR EQUIVALENT)
DC LOAD
SPDT CONTACTS
N.C.
COM
N.O.
SPDT CONTACTS
N.C.
COM
N.O.
TB1
TB1
21 22 23 24 25 26
PWR
TB3
EARTH
GROUND
DC
POWER
+
4501-646B
INPUT CONNECTIONS
TB2
TB2
DIODE
TB4
TB4
TB4
N.O.
FIGURE B: AC INDUCTIVE LOADS
COM
FIGURE A: DC INDUCTIVE LOADS
N.C.
11 12 13 14 15 16
TB3
RELAY CONTACT PROTECTION
I+
NOTE: ALL RELAY CONTACTS SHOWN
IN DE-ENERGIZED CONDITION.
V+
OUTPUT
JMP
AC RELAY POWER
36 35 34 33 32 31
DC
RELAY
TB4
JUMPER [I+] TO [JMP]
FOR VOLTAGE OUT
8XXT-1500
RELAY OUTPUT
46 45 44 43 42 41
46 45 44
COM
RTN
L1
W
CONTACT
PROTECTION
(FIGURE B)
OR
N.O.
RELAY
N.C.
INTERPOSING RELAY CONNECTIONS
DC
LOCATE RELAY NEAR LOAD
MOV
TYPICAL DIN-RAIL MOUNTED RELAY
AC-POWERED INTERPOSING RELAY
LOCATE RELAY NEAR LOAD
DIODE
TYPICAL DIN-RAIL MOUNTED RELAY
CONTACT
PROTECTION
(FIGURE A)
DC-POWERED INTERPOSING RELAY
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
CL
"T" RAIL DIN MOUNTING
DIN EN 50022, 35mm
R
SET
MODE
RLY
ST
(95.3)
3.75
- 20 -
(118.9)
4.68
3.90
(99.1)
4.35
(110.5)
SCREWDRIVER SLOT FOR
REMOVAL FROM "T" RAIL
INTELLIPACK TRANSMITTER
ENCLOSURE DIMENSIONS
NOTE: ALL DIMENSION ARE IN INCHES (MILLIMETERS)
(59.4)
2.34
1.05
(26.7)
Z/FS
RUN
Acromag
4501-642A
IntelliPack Series 841T Transmitter/Alarm User's Manual
Frequency Input
___________________________________________________________________________________________
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