Watlow IRSM/IRC User's Guide

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IRSM/IRC
User’s Guide
Version 5.2
ANAFAZE
Measurement & Control
334 Westridge Drive * Watsonville CA 95076 *e Phone: 408 724-3800 * Fax 408 724-0320
This is Part #10251-00 * Copyright (c) 1993
ALL RiGHTS RESERVED: No part of this publication may be reproduced, stored in an electronic retrieval system, or transmitted in any form by
any means—electronic, mechanical, photocopying, recording, or otherwise—without prior written permission from ANAFAZE, Inc.
WARNING
ANAFAZE has made efforts to ensure the reliability and safety of the
ANAFAZE 8 IRSM and provide recommendations for its safe use in
systems applications. Please note that in any application, failures can
occur that will result in full control outputs or other outputs that may
cause damage or unsafe conditions in the equipment or process
connected to the ANAFAZE 8 IRSM.
Good engineering practices, electrical codes, and insurance regulations
require independent, external safety devices be used to prevent
potentially dangerous or unsafe conditions. Assume that the
ANAFAZE 8 IRSM can fail with outputs full on, outputs full off, or
other unexpected conditions.
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Table of Contents
Warranty ...eeesocrnrnorzanerones ...e 1
Warning 2
Table of Contents.. 3
1.0 Introduction ........ 4
2.0 Specifications 6
3.0 Ordering Information for ANAFAZE 8 IRSM..........=.esunovo 7
4.0 Installation ............ 8
4.1 Mounting ...............eeeinin enn e TREND Terence conan eeeees 8
4.2 Connections .............—.—..ieescerecereces 8
4.3 Calibration .................———......eeeene eee neones 9
4.4 Ambient Conditions .... eoenoenooro ren econo. 10
5.0 Practical Infrared Temperature Measurement .................. 11
5.1 Emissivity- Reflection and Transmission ..................... 11
5.1.1 Determining Emissivity ......... .12
5.2 Object Size and Distance from IRSM ....rrcuccern erre 13
5.3 Response Speed 15
5.4 Infrared Wavelength... 15
5.5 Ambient Conditions ...................e= 11m... nee 16
6.0 ANAFAZE Infrared Controller (IRC).......... 17
6.1 Specifications... DL DD 17
6.2 Setpoint Adjustment.....................-..-.eeeee e 17
6.3 Peak Hold ........................e. een... renoconooreacorecacenereco. 17
6.4 Ambient Temperature Display ..............w..memenconcrnn 17
7.0 Connections 18
7.1 IRC to IRSM Connections ...............=+++.00meeenreer nee 18
7.2 IRC OULPULS...…………crcereserseascorenerenerensenneencencanteneseenvene 0e 18
7.3 IRC Terminals …….....…….…rererierseneeeeneransecersrantas screen eecees 19
7 AITRC Internal TUMpers.....….….….…..….……rermenssensenenssnsnmnennn 19
7.5 Alarm with Manual Reset... 19
7.6 Output Wiring.…..….……mrercersreeereneneansnenen .20
8.0 IRC Calibration „21
8.1 ProCed U Career ERREERR eee sree eas 21
8.2 IRC Jumper LocatiOTS eier EEE DA 21
8.3 IRC Panel Cutott............. ener nara rare nee 22
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1.0 Introduction
The ANAFAZE 8 IRSM is a compact sensor with the features needed for
diverse temperature measurement and control applications. The
ANAFAZE 8 IRSM combines a wide temperature range, peak hold,
simultaneous sample and hold, adjustable emissivity, and an internal
temperature sensor, all enclosed in a stainless steel shell only 2 inches in
diameter. An optional combination air purge and air cooling shell can be
added for high temperature and severe environments.
The ANAFAZE 8 IRSM is ideal for temperature measurement and
control of paint drying and curing, heat treating, plastic extruding and
forming, fabric dying, gluing, paper coating and printing, and other
applications where the object is moving, small, delicate or too hot for
contact measurement.
Features
Industrial Package: The ANAFAZE 8 IRSM is enclosed in a rugged
1/8th inch stainless steel tube only 2 inches in diameter. The optional air
cool/ purge shell increases the diameter to only 2.5 inches. In addition to
providing both air purge and air cooling, it inchudes standard 1 inch pipe
threads for connection of conduit or site tubes. Sealing for most
environments is possible with the air shell and a site tube can be used to
prevent spray from hitting the lens.
Multiple Sensor Applications: Simultaneous sample and hold permits
systems with multiple sensing modules to measure at exactly the same
time (with-in 1ms). This feature also permits reading to be "locked in” to
synchronize measurements with process events.
Peak Hold: Peak hold enables the sensor to respond to increasing
temperatures without filtering while delaying the response to decaying
temperatures. The decay rate is externally adjustable with a
potentiometer or resistor. This feature allows the measurement and
control of objects that are occasionally blocked, separate objects moving
past the sensor, and will detect the highest temperature on unevenly
heated objects.
Target Size Versatility: The ANAFAZE 8 IRSM focus can be factory
adjusted to match different target requirements. The measurements are
accurate at any distance between the sensing module and the target as
long as the target is large enough to fill the area viewed by the IRSM. The
field of view is the distance to the target divided by 20. Thus at a distance
of 20 inches the target size is 1 inch. Since the focus can be adjusted small
targets are measured at closer distances; the minimum target is about
0.2" at 4.0". The adjustable focus also makes wide angle measurement
possible where an average temperature over a wide area is desired.
The IRSM provides non-contact temperature measurement using the
infrared wavelength of 8-14 microns. The output is a linear signal of 0-10
mAdc representing 0-1000 degrees F. Other outputs are available
including 4 to 20 mA and J thermocouple. A single power supply of 5
vDC at 25 mA for the 0 to 10 mA and J thermocouple outputs or 15 vDC
at 35 mA for the 4 to 20 mA outputs.
Sample and hold, which can also be used as a track and hold is standard
in the ANAFAZE 8 IRSM. This permits systems with multiple IRSM's to
measure at exactly the same time (within 1ms). A single IRSM can be
synchronized to a process event, to enable measurements to be taken at
an exact time, for example when a moving object is in front of the IRSM.
The reading is effectively held as long as the hold line is connected to
ground. ;
Peak Hold is also included and provides a "one way" filter that enables
the IRSM to respond at full speed to increasing temperatures while
delaying the response to falling temperatures. An external resistor or
potentiometer can be used to adjust the decay rate of the Peak Hold.
2.0 Specifications
Infrared Spectrum:
Temperature Range:
Accuracy:
Time Constant:
Spot Size (90% energy):
Smallest Spot:
Focal Distance (factory):
Sample and Hold:
Peak Hold:
Peak Hold Reset:
Emissivity:(.90 Standard)
Emissivity Thumbwheels (optional):
Outputs:
Ambient Sensor:
Power:
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8-14 microns.
0 to 1000 F.
+1% Reading,
+1 F, above 100 F
300ms.
Distance/20.
0.2" @ 4".
4" to infinity.
lms acquisition.
0 to 100% external resistor set.
contact to ground.
0.20 to 0.99, internal jumpers.
0.20 to 0.99
0 to IOMA
4 to 20mA
J thermocouple
RTD type, available for
measurement.
+ 5 vDC or +8 to 15 vDC
1mA+ current output
Stainless Steel, 1/8" tubing.
2" dia, x 5.125"
151b
Anodized Aluminum,1/8"
tubing, std. pipe thread for
conduit or site tube.
2.5" dia., x 5.75"
2.3 1b W/IRSM
127 std. length 8 wires 24
gauge.
80 ms response
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3,0 Ordering Information for ANAFAZE 8 IRSM
Infrared sensing module part numbers are created by adding options to
basic part number separated by dashes.
ASIRSM-: Infrared Sensing Module including 6 inch pigtail cable with
in-line connector wired to module and mating connector for customer
| fumished cable (for complete cable add -CA12). Standard temperature
range of 0 to 1000 degrees with corresponding output of 0 to 10 mA.
IRSM-S: Standard response time 300 ms time constant.
IRSM-F: Fast response time 80 ms time constant.
| IRSM-CFXX: Close focus at XX inches from 4 to 20 inches.
IRSM-J T/C: ] thermocouple output curve on copper wire for use with
| | controller or other device where the thermocouple reference
compensation can be bypassed or eliminated. This eliminates the need
for thermocouple extension wire and improves accuracy.
| IRSM-J T/C-REF: Thermocouple reference for use with above option.
Small module attaches at controller and simulates thermocouple wire if
reference junction can not be eliminated.
IRSM-4-20MA: 4 to 20 mA output replacing 0 to 10 mA output.
IRSM-T: Thumbwheel emissivity adjust.
IRSM-AS: Air purge/cooling shell with conduit adapter and sight tube
adapter.
IRSM-VC: Vortec cooler for use with air purge /cooling shell, provides.
operation at ambient temperatures up to 300 F.
IRSM-CA-12: Standard 12 foot interconnecting cable with IRSM mating
connector on one end and tinned leads on the other.
IRSM-CAXX: Special cable length specify XX as length in feet.
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ANAFAZE 8 IRC
IRC: ANAFAZE 8 IRC Infrared Sensing Module Display with two
setpoints. Provides power for IRSM and terminal strips for connection to
IRSM and AC power. Panel size 1 approximately 1/8 DIN.
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4.0 Installation
The following sections contain installation information for the
ANAFAZE IRSM.
4.1 Mounting
The IRSM is enclosed in a stainless steel housing and can be mounted in
any position. For environments that are dusty, wet, or have other
contaminants the IRSM-AS air purge / cooling shell must be used.
The case is 1/8th inch tubing and can be mounted using pipe clamps,
conduit fittings or other means. The lens should be protected during
mounting, although an inadvertent small scratch will not appreciably
effect the accuracy.
WARNING: The lens must be kept clean for accurate measurements. A
dirty lens will tend to reduce the signal output and can cause
overheating in control applications.
If the unit is mounted without the IRSM-AS air purge/ cooling shell or it
the air is turned off on the shell the lens should be check prior to
operating the system. The lens should be checked periodically and
cleaned with a cotton swab if necessary.
4.2 Connections
WARNING: The peak hold feature is enabled unless pin J (wire color
BROWN) is connected to ground.
The IRSM comes with a 6" cable with a 9 pin connector. There are two
configurations. A mating connector is supplied and is wired per the pin
listing below. If the optional CA12 cable is purchased the wire colors are
as listed:
PIN COLOR S/N 1399 and lower S/N 1400 and up
A ORANGE SIGNAL OUT +SIGNAL OUT +
B WHITE SIGNAL OUT - SIGNAL OUT -
C BLACK GROUND GROUND
D GREEN -5 VDC +8 to 15 VDC *
E RED +5 VDC +5 VDC *
F BLUE AMBIENT AMBIENT
H YELLOW Sample & Hold Sample & Hold
} BROWN PEAK HOLD PEAK HOLD
K SHIELD SHIELD SHIELD
*Only one supply can be used at a time.
4.2.1 Power Supply and Output Signal Level
The ANAFAZE 8 IRSM is designed to operate using one of two different
supplies. The 5 VDC operation is provided for use in systems where 5
VDC is available; it is recommended for the 0 to 10 mA output. The 8 to
15 VDC supply is needed when using the 4 to 20 mA output if the loop
impedance is greater than 50 ohms. With the 5 vDC supply, the loop
impedance is limited to 100 ohms for the 0 to 10 mA and 50 ohms for the
4 to 20 mA output. The 8 to 15 Vdc supply drives the following loop
impedances:
Power Output 4-20 mA Output 0-10 mA Output
Supply Compliance Max Load | Max Load
Voitage Voltage SERIE Eg led Resistance
5 \* 1 V 50 ohms 100 ohms
ВУ 4 \ 200 ohms 400 ohms
10 V 6V 300 ohms 600 ohms
12 V 8V 400 ohms 800 ohms
15 V 11 V 550 ohms 1100 ohms
* using special 5.0 volt power input
4.2.2 Sample and Hold
The sample and hold is activated by connected pin H (Yellow) to ground
pin C (Black). The sample is held as long as the line is grounded with
minor decay. To use the IRSM as a Sample and Hold the line should be
held at ground until the sample is to be taken. The line is then released
for the sample period (minimum 10 ms) and the connected to ground.
To use the IRSM as a track and hold the line is left disconnected and the
IRSM will track the temperature. When the sample is desired pin H
(Yellow) is connected to ground as above. When the IRSM is returned to
the track mode by disconnecting the line.
4.2.3 Peak Hold
Peak hold is enabled by removing pin J (brown) from ground. A 10
megohm potentiometer should be connected between pin J (brown) and
pin C (black). This potentiometer can be adjusted to regulate the peak
hold decay rate. When the desired decay rate is obtained the
potentiometer can be replaced by a fixed resistor.
The IRSM should retain specified accuracies and needs to be only
periodically checked against known temperatures. Depending on the
application approximately every 6 months or yearly.
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Ш 4.3 Calibration
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Use of a black body temperature source or an independent method of
measuring the object temperature can be used to check the IRSM. The
test equipment must be capable of reading temperature of at least equal
to or greater than the IRSM accuracy.
Any unit which does not meet calibration accuracy should be returned to
the factory for re-calibration and testing.
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4.4 Ambient Conditions
The ANAFAZE IRSM is designed for operation in ambient temperatures
up to 120°F. For longest life, ANAFAZE recommends temperatures
below 100°F. The ANAFAZE IRSM-AS air purge/cooling shell allows
operation up to 300°F with a low temperature air supply. The ANAFAZE
IRSM-VC Vortec Cooler will provide this cool air from normal
instrument air at 70°F with a flow rate of approximately 3-4 SCFM.
As with any precision sensor, avoid rapid changes in the ambient
temperature. A change which exceeds one °F per minute may cause
measurement errors. If a faster ambient temperature change occurs, wait
approximately 20 minutes for the output to stabilize.
| ; The ambient temperature of the IRSM may be obtained from the ambient
; Sensor mounted in the IRSM. This signal is available on pin F AMBIENT
| ; with reference to pin C Ground. The temperature is from a posisistor
element with a base resistance of 100 ohms at 77°F.
; When the IRSM is used with the ANAFAZE IRC, the ambient
5 temperature is available at the touch of a button. This signal may be used
by other ANAFAZE controllers to indicate and record the IRSM ambient
temperature and to control the cooling air flow to the air cooling shell.
Ambient Temperature Sensor Table
°F Ohms
0 680
25 785
50 885
77 1000
100 1090
125 1205
150 1315
175 1420
200 1535
300 1990
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5.0 Practical Infrared Temperature Measurement
This section the basic information needed to successfully make non-
contact infrared temperature measurements. Where necessary infrared
theory is discussed but only in a general sense to improve the
understanding needed for measurement or control.
Infrared energy is emitted by all objects with a temperature above
absolute zero. The amount of energy increases as the temperature of the
object increases, thus subject to some limitations, if the amount of energy
can be measured the objects temperature can be determined. By
understanding these limitations accurate non-contact temperature
measurements can be made with infrared sensors. These include:
. Emissivity including reflection and transmission
° Object size and distance from the sensor
. Speed of response
. Infrared wavelength
. Ambient conditions
9.1 Emissivity- Reflection and Transmission
The total infrared energy coming from an object can originate from three
sources. It can be emitted from the object, it can be reflected from the
object, or it can be transmitted through the object. Since the total energy
15 100%, the percent of energy from these three sources must add to
100%. Instead of using percentages these portions are normally written
as decimal ratios that add up to 1 as follows:
E+R+T=1
where:
E = Emissivity as a ratio
R = Reflection as a ratio
T = Transmission as a ratio
The value of each of these variables can be between 0 and 1 and is
determined primarily by the material and surface condition of the object.
(These values may also be a function of infrared wavelength and object
temperature).
For a theoretical material with 0 transmission and 0 reflection the
emissivity would be 1.00. This theoretical object is called a Black Body
and would emit the maximum amount of energy at a given temperature.
lo measure the object temperature, the portion of the measured energy
being emitted verses the transmitted and reflected portion must be
estimated. This emitted energy varies as a function of the object
temperature. The transmitted and reflected energy are a function of the
temperatures of the objects surrounding the object being measured. The
larger the portion of emitted energy, the generally more accurate the
infrared temperature measurement.
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Thus the objects that can be most simply measured with infrared sensors
generally have high (near 1) emissivities.
Most organic materials have emissivities between 0.85 and 0.95 making
them ideal for infrared measurement.
5.1.1 Determining Emissivity
The most practical method of determining emissivity is by using a
alternative technique to measure the actual temperature of the object
being measured and adjusting the emissivity of the infrared sensor
module until the two readings match. Ideally this should be done as near
as possible to the expected operating temperature in the actual operating
condition if possible. This will tend to automatically take into
consideration the effects of surrounding temperatures such as heaters or
oven walls. Some of the possible techniques are:
5.1.1.1 Measure with Contact Sensor
Use a thermocouple or other contact temperature sensor to measure the
actual surface temperature while heating the object in as near a possible
situation as the actual process. This can be readily accomplished by using
a separate input on the ANAFAZE 8 PID controller with a thermocouple
input selected. The ANAFAZE 8 PID will display the temperature in
degrees F and performs the necessary reference junction compensation
and linearization. Direct connection of thermocouples J, K, and T are
possible.
5.1.1.2 Heat to Known Temperature
Small objects or a sample of a large object can be heated in an oven or
other device to a known temperature. While the object is held at the
known temperature aim the Infrared Sensor Module at the object and set
its emissivity until the reading matches the known object temperature. If
possible remove the object from the oven during measurement or
minimize any possible reflection of oven walls in the object to obtain the
most accurate emissivity. If reflections are present the emissivity
determined will probably be higher than actual. |
13
5.1.1.3 Increase Emissivity to a Known Value
Increasing the emissivity to a known value enables the object
temperature to be measured with the infrared sensor module. The sensor
module can then be aimed at a non- altered portion of the object and the
emissivity adjusted to match the temperature measured at the known
emissivity area. The emissivity can be increased as follows:
1. Cover a section of the object with masking tape (low temperatures),
oil, water, grease, mold release, or other organic material. An
emissivity of 0.95 can be assumed for the covered section.
2. Paint a section of the object with high temperature, non-metallic
black paint and again use an emissivity of 0.95 for the painted
section.
3. Drill a hole approximately one inch or larger in diameter
approximately 6 times deeper than the diameter. Aim the infrared
sensor module into the hole and the internal reflections will
increase the emissivity to approximately 0.95.
5.1.1.4 Use an Estimated Emissivity
For control or measurement situations where repeatability is more
important than absolute accuracy, or in situation where the emissivity
can not be determined by any other means an estimated emissivity can
be used. The emissivity can be estimated by using the table provided in
appendix 1. Please note that the surface condition (i.e. oxidation, rust, or
other factors) can have a major effect on emissivity especially of metals --
therefore the tables should be used only when no other method is
practical.
5.2 Object Size and Distance from IRSM
In order to make accurate infrared measurements the object being
measured must be larger than the measurement area of the IRSM.
The measurement area of the IRSM can be estimated by dividing the
distance to the object by 20. Thus at 20 inches the measurement size is
about 1 inch in diameter. The measurement size for standard focus
instruments is approximately one inch for distances less than 20 inches
from the sensor.
For close focus infrared sensor modules, the target size at the focal
distance can be estimated by dividing the focal distance by 20. For
distances other than the focal distance, the target size will larger than the
standard focus instrument, please consult ANAFAZE for additional
information. |
5.2.1 Practical Object Size
The recommended minimum object size is approximately 2 times the
minimum target size as calculated above. The minimum target size is
specified at 90% energy since the energy verses target size follows a
Gaussian distribution and some energy is always detected even from |
heat sources substantially off axis. This is similar to the effect that may
occur when taking a photograph of an object near the sun and seeing the
suns image in the photo. |
14 |
The possible errors that can result when measuring small object can be
minimized by keeping the background temperatures as low as possible.
Since the ANAFAZE IRSM can be factory focused at any distance
between 20 and 4 inches, a close focus sensor will allow measurement of
small objects if the sensor can be moved close to the target.
5.2.2 Small Object Correction
When the object is smaller than the measurement size the temperature
being measured will be the average of the target and the background. If
the background is cooler than the object the reading will be low and if
the background is hotter than the object the reading will be high.
If the background will remain at an approximately constant temperature
or is substantially lower than the object temperature the reading may be
corrected by increasing the emissivity (background cooler than the object
only) or correcting in a computer or other scaling device. The value of the
correction should be determined by independently measuring the object
temperature as in section 2.
Contact ANAFAZE for assistance when the background is hotter than
the object being measured. A precise energy calculation can be made to
estimate the possible errors.
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5.3 Response Speed
The standard ANAFAZE 8 IRSM has a time constant of 300 ms. The
sensor takes 300 ms for its output to reach 66% of a change in measured
temperature. |
For example at temperature of 300 F that instantaneously changes to 310
F the sensor will output 307 degrees after 300 ms, After approximately 3
time constants the output will reach 95% of the change or about 310 F.
For larger changes the absolute error will be larger. |
The error can be reduced in applications requiring high response speed
by selecting the optional IRSM-F fast response time for a time constant of
80 ms.
The effective response can be improved in certain applications by using
peak hold or sample and hold. |
Peak hold can be used when measuring objects separated by short
distances. This will act as a one way filter retaining the high readings of
the objects being measured. Increases or decreases in temperature will be
only small changes from the basic object temperature and thus closely
approximated by the IRSM even if the measurement time is short. By
using peak hold instead of a normal filter the IRSM will respond as fast
as possible to increases in temperature.
Sample and hold can be used to synchronize the measurement to a given
measurement event. Thus the sensor output will only change when the
object is viewed by the sensor as indicated by an external trigger.
5.4 Infrared Wa velength
The ANAFAZE 8 IRSM is filtered in the infrared wavelength from 8 to 14
microns. This wavelength is optimal for Measurement of temperatures
between 0 and 1000 F and offers certain advantages:
. The majority of the infrared energy at these temperatures is in the
band improving the measurement accuracy. | В
e There is little atmospheric absorption due to water vapor and
carbon dioxide nearly eliminating any errors due to changing
humidity and long measurement distances.
Color normally has little effect on emissivity in this band and accurate
measurements can be made of most objects of different colors without
changing the emissivity value.
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5.5 Ambient Conditions
The ANAFAZE 8 IRSM is designed for operation in ambient
temperatures up to 120 F. For longest life temperatures below 100 F are
recommended if ‘possible. The ANAFAZE IRSM-AS air purge /cooling
shell allows for operation up to 300 F with a low temperature air supply.
The ANAFAZE IRSM-VC Vortec Cooler will provide this cool air from
normal instrument air at 70 F with a flow rate of approximately 3-4
SCFM.
When possible, as with any precision sensor, avoid rapid changes in the
ambient temperature. Typically a change exceeding one degree F per
minute may cause measurement errors. If a faster ambient temperature
change occurs wait approximately 20 minutes for the output to stabilize.
17
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6.0 ANAFAZE Infrared Controller (IRC)
The ANAFAZE IRC provides local display with up to two setpoints. It
also provides DC power to the IRSM and includes provision for a fixed
peak hold. In normal operation, the measured temperature is displayed.
Three push buttons provide display selection of setpoint 1, setpoint 2, or
ambient temperature. The setpoints are adjusted using front access
potentiometers.
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6.1 Specifications
Input range 0-10 mAdc
Display Range 0 to 1000°F
Celsius display Special order
Accuracy + 25% of range
Setpoints Two provided. Each
selectable as NO or NC,
use as High or Low.
Outputs Two 5Vdc € 6mA to
drive SSR.
Alarm Lock (Jumper select) Locks alarms until reset
externally. |
Case 4.0" х 2.5" х 5.5"
Panel Cutout 3.5" x 1.875"
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6.2 Setpoint Adjustment
To change either setpoint, hold the appropriate push-button and adjust
the setpoint with a small screwdriver. When the push-button is held, the
setpoint is displayed.
6.3 Peak Hold
The peak hold is achieved with a fixed 10 megOhm resistor installed in
the IRC. Connecting the brown lead of the IRSM to pin 14 will enable the
peak hold function. The approximate rate of decay is 1% of the reading
per 1 second. Thus, 10 seconds after reading a temperature, the display
will be 10% less of the peak value of the temperature. If longer time
constants are required, please contact ANAFAZE.
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6.4 Ambient Temperature Display
To read the ambient temperature at the IRSM press the AMB button.
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7.0 Connections
The IRC is connected to the ANAFAZE IRSM according to the table in
Section 7.1. The additional connections are described in Section 7.3. All
the connections are marked on the terminal label on top of the IRC.
7-1 IRC to IRSM Connections
The IRSM comes with a 6" cable with a 9 pin connector. A mating
connector is supplied and is wired per the pin listing below. If you do not
purchase the CAI2 cable, the wire colors are as listed. (Consult
ANAFAZE if your IRSM has a serial number less than 1399.)
Pin Color IRSM IRC Terminal
A Orange Signal Out+ Signal Input + 11
B White Signal Out- Signal Ground
C Black Ground Signal Ground
D. Green +8-15 Vdc No Connection
E * Red +5 Уас +5Vdc 1
F Blue Ambient IRSM temp. 12
H Yellow Sample/Hold N/C
] Brown Peak Hold Peak Hold 14
K
Shield Shield Signal Ground 9
E Notes
8 1. Power supply Pin D, green wire, is not used on IRSM with serial
N numbers greater than 1400 with the IRC. For serial numbers less than
1399, this connection must be made. Contact ANAFAZE for more
information.
2. Peak Hold Pin J, brown wire, will enable the front panel adjustment
potentiometer if it is connected to terminal 14. If peak hold is not desired,
connect the brown wire to terminal 9, Signal Ground.
3. Sample and Hold Pin H, yellow wire, will activate the holding of the
sample when it is grounded to terminal 9, Signal Ground.
7.2 IRC Outputs
a | The IRC dual outputs may be configured for N.C (reverse action) or N.O.
(direct action) when the PV is below the SP. The control action of output
i #1 may also be configured for On/Off control or as an alarm action with
т manual reset with internal jumpers. The factory standard setting is for
Output #2 to be N.O. and Output #1 to be On/Off.
Warning
Do not use the IRC as an alarm safety final shutdown device for
shutdown of any type of process.
19
7-3 IRC Terminals
Rear of IRC
1 2 | 3 4 5 | 6 7 6
9 {10 (11 (12 | 13 114 | 15:16
1, +5Vdc 2 -5Vdc
3. Output #2 4. Output #1
5. Output Ground 6 N.C.
7. 120 Vac H 8 120 Vac N
9. Signal ground 10. Reset alarm
11. +Signal in 12. Ambient In
13. +5 Vdc 14. Peak Hold
15. N.C. 16. N.C.
7.4 IRC Internal Jumpers
Function Jumper
Output #2 N.O. 1to2
Output #2 N. C. 1to3
#1 On/Off 405
#1 Alarm w/reset 6 to 7
Output #1 active 8to9
Output #1 active 11 to 12
Output #1 active 14 to 15
(Factory jumper settings are in bold print.)
7.5 Alarm with Manual Reset
The IRC output #1 may be in the mode of an alarm output requiring an
external manual reset. This is accomplished by taking the jumper from 4
to 5 and putting it on 6 to 7.
When the output activates, it will retain that output in that state, no
matter where the PV is with respect to the SP. To return to the non-active
state, the Reset Alarm terminal 10 must be connected to the Output
Ground terminal 5 through a N. C. switch. ANAFAZE recommends that
you use Reverse Action (N. C.).
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7.6 Output Wiring
Output #1
Reverse Action N. C. Direct Action N. O.
IRC SSR IRC SSR
4 + 13 +
5 - 4 -
Output #2
IRC SSR
3 + Reverse Action N.C. Jumper 1 to 3
Direct Action N.O, Jumper 1 to 2
Alarm with Manual Reset
N.C. Pushbutton
IRC IRC
10
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8.0 IRC Calibration
The calibration of the IRC requires a precision current source capable of
supplying up to 10 mAdc +.1% accuracy and a precision resistor at 1000
ohms +.1%.
8.1 Procedure
1.
2.
Disconnect the IRSM from the IRC.
Connect the current source to the IRC input terminals- positive to
terminal 11 and negative to terminal 9.
Set the current source for 8 mAdc. The IRC display should read
800+1. If it does not, adjust R19.
Connect the 100 ohm resistor to the Ambient input terminal 12 and
Signal Ground terminal 9.
Push the AMB push-button. The display should read 77. If it does
not, adjust the ambient sensor potentiometer.
This completes calibration of the IRC. Any failure of the unit to calibrate
to specifications should be noted; send the unit back to ANAFAZE for
repair.
8.2 IRC Jumper Locations
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an #8 #6
R191 © Transformer
U2
Terminal
16 |
Strip
o 7 o 015
о 6 13 oî4
o 5 U4 o 012
Ambient о 4 oO 011
о 010
Q 3 O
8 #1 #9
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Potentiometer
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22
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8.3 IRC Panel Cutout
3.65"
1.875"
23
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