Series 651T/652T/653T Isolator User’s Manual Process Current Two-Wire Transmitters
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Output Power Supply:
An external loop power supply is
required from 12VDC minimum to 36VDC maximum.
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. It must never exceed 60V,
or damage to the unit may result. Reverse polarity
protection is included.
Power Supply Effect:
Less than
±
0.001% of output span
effect per volt DC change, or
±
0.02% 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
Ω
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
Ω
.
Output Current Sense Resistor:
A precision built-in 10
Ω
resistor (
±
0.1%,
±
25ppm/
°
C) is connected in series with
the output “OUT-” terminal for convenient output loop
current monitoring with a DVM, without breaking the loop.
A DVM connected from output “SNS” and “OUT-“ will
measure the corresponding output voltage drop across
10
Ω
. Thus, a measurement of 40mV to 200mV
represents 4 to 20mA in this mode.
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
4501-728 for details.
Dimensions
: Width = 1.05 inches, Height = 4.68 inches, Depth
= 4.35 inches (see Drawing 4501-728).
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.
Power Indicator:
A green LED for each channel (labeled
“PWR”) provides visual status indication of output loop power.
Shipping Weight:
1 pound (0.45 Kg) packed.
APPROVALS (-xxx0)
0
: CE marked.
UL listed (UL508 17
TH
Edition and ANSI/ISA 12.12.01-2007)
c
UL listed (Canada Standard C22.2, 142-M1987 and
213-M1987)
Hazardous Locations: Class 1; Division 2; Groups A, B, C, D.
ENVIRONMENTAL SPECIFICATIONS
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.
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 (Overvoltage Category) II environment per IEC
1010-1 (1990).
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.
IMPORTANT:
Power, input, and output (I/O) wiring must be in
accordance with Class I, Division 2 wiring methods Article 501-
4(b) of the National Electrical Code, NFPA 70 for installations in
the U.S., or as specified in section 18-1J2 of the Canadian
Electrical Code for installations within Canada and in accordance
with the authority having jurisdiction.
This equipment is suitable for use in Class I, Division 2,
Groups A, B, C, and D, or non-hazardous locations only.
WARNING – EXPLOSION HAZARD
– Substitution of
components may impair suitability for Class I, Division 2.
WARNING – EXPLOSION HAZARD
– Do not disconnect
equipment unless power has been switched off or the area is
known to be non-hazardous.
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