IntelliPack Series 841T Transmitter/Alarm User's Manual Frequency Input
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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.
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.
CAUTION:
Do not exceed 36VDC peak, to avoid
damage to the module.
Table 8: 841T Supply Current
Supply
Voltage
Model
841T-0500
Model 841T-1500
(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%.
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:
Suitable for installation in a Pollution
Degree 2 environment with installation category (over-voltage
category) II rating.
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.
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.
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.
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. Upon power up, the module
may take up to 20 seconds to perform internal
diagnostics, during diagnostics, the relay may cycle
states before the module becomes operational. 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.
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.