Series 655T/656T Transmitter User's Manual mV/TC Input
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OUTPUT SPECIFICATIONS
DC Process Current Output Specifications:
Output Range:
4 to 20mA DC, 3.8 to 23.8mA range typical.
Output Ripple:
Less than
0.1% of output span.
Output Limiting:
Output current is limited to less than
25mA, typical.
Output Maximum Current:
23.8mA typical, 25mA
maximum.
Output Compliance:
12V Minimum, 13V Typical, with a 24V
supply and 20mA loop current.
Output Resolution:
The output stage resolves to 1 part in
6546 for a 4 to 20mA output span. Note that input
resolution is limited to 0.1
C (TC inputs). Thus, the
effective resolution is controlled by the output stage for
TC input spans greater than 655
C (resolves 1 part in
6546), or the input stage for TC input spans less than
655
(resolves to 0.1
C). For most voltage input ranges,
the effective resolution is controlled by the output stage
(resolves to 1 part in 6546).
General Output Specifications:
Response Time:
For a step change in input signal, the
analog output reaches 98% of final value in less than
980ms typical, with a 500
load. Response time will
vary with load resistance.
Accuracy:
Typical TC accuracy is listed in Table 5. Voltage
accuracy is better than
0.1% of output span (
16uA),
typical. CJC resolution may degrade accuracy for
smaller input spans. This error includes the combined
effects of isolator repeatability, hysteresis, terminal point
linearity, and adjustment resolution. It does not include
sensor error. Relative accuracy will vary with calibrated
input span and effective resolution.
Accuracy Versus Temperature:
Better than ±0.010% of
input span per
F (
0.018% per
C or
180ppm/
C) over
the ambient temperature range for reference test
conditions. This specification includes the combined
effects of zero and span drift over temperature.
Output Power Supply:
12-36V DC Class 2, 24mA. The
supply voltage must be chosen to provide full-scale
current to the load (0.020*R), plus 12V to the isolator
terminals, plus any line drop. Reverse polarity protection
is included.
Power Supply Effect:
Less than
0.001% of output span
effect per volt DC change, or
0.015% of output span
effect per volt peak-to-peak of 60Hz/120Hz power supply
ripple.
Output Load Resistance Effect:
Less than
0.01% of
output span effect for
100
change in load resistance.
Load Resistance Range Equation:
R
load
(Maximum) =
(V
supply
- 12V)/0.020A (assuming negligible line drop). At
a 24V DC supply, R
load
= 0-600
.
Note:
For sensitive applications with high-speed
acquisition rates, high frequency noise may be reduced
considerably by simply placing a 0.1uF capacitor directly
across the load.
Output Conversion Rate:
Every 50ms or 20 conversions
per second (millivoltage ranges), every 306ms or 3
conversions per second (thermocouple ranges).
APPROVALS (-xxx0)
0
:
cULus Listed
Hazardous Locations: Class I ; Division 2; Groups A, B, C, D.
ENCLOSURE/PHYSICAL SPECIFICATIONS
Unit is packaged in a general purpose plastic enclosure that is
DIN rail mountable for flexible, high density (approximately 1”
wide per unit) mounting. See Enclosure Dimensions Drawing
4501-780 for details.
Dimensions
: Width = 1.05 inches, Height = 4.68 inches, Depth
= 4.35 inches (see Drawing 4501-780).
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 #14-24 solid
or stranded; Separate terminal blocks are provided for each
I/O channel.
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.
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature:
-25
C to +75
C (-13
F to +167
F),
Temperature Code: T4.
Storage Temperature:
-40
C to +85
C (-40
F to +185
F).
Relative Humidity:
5 to 95%, non-condensing.
Isolation:
Inputs, outputs, and channels 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 for use in pollution degree 2.
Radiated Field Immunity (RFI):
Designed to comply with
IEC1000-4-3 Level 3 (10V/M, 80 to 1000MHz AM & 900MHz
keyed) and European Norm EN50082-1.
Electromagnetic Interference Immunity (EMI):
No output shift
will occur beyond
0.25% of span, 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) 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.
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.