Red Lion IRMA - Manual (Page 2)

2
8. RANGE & ACCURACY: (12 Bit resolution)
Accuracy:
 ( 0.075% Range + 0.1°C [Conformity]) at 23°C after 45 min.
warm-up, conforming to ITS-90.
Note: RTD Conformity does not apply to resistance input. For best accuracy,
calibration should be performed under operating conditions.
Relative Humidity: Less than 85% RH (non-condensing)
Span: The input span can be set to a min. of 1/8 of the full scale range,
anywhere within that range.
Range Accuracy
9. CERTIFICATIONS AND COMPLIANCES:
SAFETY
IEC 61010-1, EN 61010-1: Safety requirements for electrical equipment
for measurement, control, and laboratory use, Part 1.
ELECTROMAGNETIC COMPATIBILITY
Notes:
1. This device was designed for installation in an enclosure. To avoid
electrostatic discharge, precautions should be taken when the device is
mounted outside an enclosure. When working in an enclosure (ex. making
adjustments, setting switches etc.) typical anti-static precautions should be
observed before touching the unit.
2. Self-recoverable loss of performance during EMI disturbance at 10 V/m:
Analog output signal may deviate during EMI disturbance.
For operation without loss of performance:
Unit is mounted in a metal enclosure (Buckeye SM7013-0 or equivalent)
I/O and power cables are routed in metal conduit connected to earth ground.
Refer to the EMC Installation Guidelines section of this bulletin for additional
information.
10. ENVIRONMENTAL CONDITIONS:
Operating Temperature Range: -25°C to 75°C (-13°F to 167°F)
Storage Temperature Range: -40 to 85°C (-40°F to 185°F)
Operating and Storage Humidity: 85% max. relative humidity (non-
condensing) from -25°C to 75°C.
Vibration According to IEC 68-2-6: Operational 5 to 150 Hz, in X, Y, Z
direction for 1.5 hours, 2 g’s.
Shock According to IEC 68-2-27: Operational 30 g’s, 11 msec in 3 directions.
Altitude: Up to 2000 meters
11. MOUNTING: Universal mounting foot for attachment to standard DIN
style mounting rails, including top hat (T) profile rail according to EN50022
- 35

7.5 and 35

15, and G profile rail according to EN50035 - G32.
12. CONNECTION: Compression type terminal block
13. CONSTRUCTION: High impact black plastic case, Installation Category I,
Pollution Degree 2.
14. WEIGHT: 4.02 oz. (114.0 g)
FUNCTION DESCRIPTIONS
Open Sensor Detection
The output can be set to go Upscale or Downscale for the detection of an open
sensor. The nominal values for each output range are listed under RTD Break
Detection in the Specifications section. This setting is always active, so changes
to the setting are effective immediately.
Unit Malfunction
If the unit has scaling problems (output remains at -0.5 mA, 3.5 mA, or -0.5
VDC nominal), check the ERROR LED on the front of the unit. An E 2 PROM
problem is indicated when the ERROR LED is on. If the ERROR LED is on,
perform a Basic Calibration followed by a Field Calibration. Turn the power off
for 5 seconds. Turn power on and check if the ERROR LED is on. If the LED is
on, contact the factory.
EMC INSTALLATION GUIDELINES
Although this unit is designed with a high degree of immunity to
ElectroMagnetic Interference (EMI), proper installation and wiring methods
must be followed to ensure compatibility in each application. The type of the
electrical noise, source or coupling method into the unit may be different for
various installations. Cable length, routing and shield termination are very
important and can mean the difference between a successful or a troublesome
installation. Listed below are some EMC guidelines for successful installation in
an industrial environment.
1. Use shielded (screened) cables for all Signal and Control inputs. The shield
(screen) pigtail connection should be made as short as possible. The
connection point for the shield depends somewhat upon the application.
Listed below are the recommended methods of connecting the shield, in order
of their effectiveness.
a. Connect the shield only at the rail where the unit is mounted to earth ground
(protective earth).
b. Connect the shield to earth ground at both ends of the cable, usually when
the noise source frequency is above 1 MHz.
c. Connect the shield to common of the unit and leave the other end of the
shield unconnected and insulated from earth ground.
2. Never run Signal or Control cables in the same conduit or raceway with AC
power lines, conductors feeding motors, solenoids, SCR controls, and heaters,
etc. The cables should be run in metal conduit that is properly grounded. This
is especially useful in applications where cable runs are long and portable
two-way radios are used in close proximity or if the installation is near a
commercial radio transmitter.
3. Signal or Control cables within an enclosure should be routed as far away as
possible from contactors, control relays, transformers, and other noisy
components.
4. In extremely high EMI environments, the use of external EMI suppression
devices, such as ferrite suppression cores, is effective. Install them on Signal
and Control cables as close to the unit as possible. Loop the cable through the
core several times or use multiple cores on each cable for additional protection.
Install line filters on the power input cable to the unit to suppress power line
interference. Install them near the power entry point of the enclosure. The
following EMI suppression devices (or equivalent) are recommended:
Ferrite Suppression Cores for signal and control cables:
Fair-Rite # 0443167251 (RLC #FCOR0000)
TDK # ZCAT3035-1330A
Steward #28B2029-0A0
Line Filters for input power cables:
Schaffner # FN610-1/07 (RLC #LFIL0000)
Schaffner # FN670-1.8/07
Corcom #1VR3
Note: Reference manufacturer’s instructions when installing a line filter.
5. Long cable runs are more susceptible to EMI pickup than short cable runs.
Therefore, keep cable runs as short as possible.
ANALOG
OUTPUT
CIRCUITRY
1
3
CIRCUITRY
CONTROL
PWM
POWER
SUPPLY
22V
3V
CIRCUITRY
PROCESS
CONVERTER
A/D
CURRENT
OUTPUT
12
10
4V
POWER
DC
6
4
+
+
-
-
VOLTAGE
OUTPUT
3V
RTD
9
8
7
0.170mA
BLOCK DIAGRAM
Enclosure class B
Level 4; 30 A/m
Level 4; 2 kV I/O
Level 3; 2 kV power
150 KHz
 80 MHz
Level 3; 10 V/rms
EN 55011
EN 61000-4-8
EN 61000-4-4
EN 61000-4-6
RF interference
Emission to EN 50081-2
Power frequency magnetic fields
Fast transients (burst)
RF conducted interference
80 MHz - 1 GHz
Level 3; 10 V/m 2 EN 61000-4-3 Electromagnetic RF fields
EN 61000-4-2
Immunity to EN 50082-2
Electrostatic discharge
Level 3; 8 kV air
Level 2; 4 kV contact 1
INPUT RANGE
DIP SWITCH
TYPE RANGE
4 6 7 8
TEMPERATURE
& OHMS RANGE
RANGE
ACCURACY
0 0 0 0 0 -160 to 654°C  0.61°C
1 0 0 0 1 -108 to 207°C  0.24°C
2 0 0 1 0 -5 to 414°C  0.31°C
RTD alpha = 0.00385
3 0 0 1 1 194 to 608°C  0.31°C
0 1 0 0 0 -157 to 640°C  0.60°C
1 1 0 0 1 -106 to 203°C  0.23°C
2 1 0 1 0 -5 to 406°C  0.31°C
RTD alpha = 0.00392
3 1 0 1 1 190 to 596°C
 0.30°C
0 0 1 0 0 35.5 to 331.0
  0.222 
1 0 1 0 1 57.0 to 178.5
  0.091 
2 0 1 1 0 98.0 to 252.0
  0.116  OHMS
3 0 1 1 1 173.5 to 316.5
  0.107 
Total Error
( ±0.61°C + ±0.1°C) = ±0.71°C
Accuracy Example:
RTD 385 Range “0”
-160°C to 654°C
Note: DIP switch settings ON = 1 OFF = 0
Conformity Range