IntelliPack Series 801T Transmitter/Alarm User's Manual mV/TC/RTD Input
___________________________________________________________________________________________
- 6 -
3.0 MODULE CONFIGURATION
This transmitter/alarm module needs to be configured for
your application. Configuration is done using Acromag’s
Windows 95
or NT
IntelliPack Configuration Program and
Serial Port Adapter. Transmitter calibration and configuration
details are included in the IntelliPack Transmitter Configuration
Manual (8500-570). Field calibration of transmitter zero, full-
scale/span, setpoint, and dropout/deadband via the modu
le’s
push-
buttons and LED’s is covered in the following paragraphs.
FIELD CALIBRATION/CONFIGURATION
This program mode allows adjustment to key transmitter
calibration and alarm parameters in the field, without having to
connect a host computer. Field reprogrammability of zero & full-
scale (input to output scaling), plus alarm setpoint & deadband
(Model 801T-1500) is alternately accomplished via the
transmitter/alarm module’s “SET”, “MODE”, “UP”, and “DOWN”
push buttons, and the zero/full-scale and relay
LED’s (see
Drawing 4501-642).
Equipment Required
An accurate input source (voltage or resistance) adjustable
over the range required for alarm setpoint and dropout. A
thermocouple (or mV source with an ice-point reference) or RTD
calibrator may also be used.
Note:
For best results, the input
source must be accurate beyond the required specifications. For
voltage inputs, use a voltage source with an output impedance of
100
or less. An accurate current or voltage meter is also
required to monitor the output level. This meter must be accurate
beyond the module specifications for best results.
Note:
The module’s input range must already be set via the
IntelliPack Configuration Software. Input levels outside of the
configured input range will not be accepted for zero, full-scale,
setpoint, or dropout calibration. Since input levels cannot be
validated during field programming, entering incorrect signals can
produce an undesired output response. Install a jumper between
the output “I+” and “JMP” terminals for voltage output, remove
this jumper for current output.
Transmitter/Alarm General Field Programming Procedure
The following procedure uses the corresponding zero/full-
scale (labeled “Z/FS”) and relay (labeled “RLY”) LED’s to indicate
which parameter is being programmed. A constant ON zero/full-
scale LED refers to zero configuration (scaling input for 0%
output), a flashing ON/OFF zero/full-scale LED refers to full-
scale/span configuration (scaling input for 100% output). A
constant ON relay LED indicates setpoint adjustment, a flashing
ON/OFF relay LED indicates dropout/deadband adjustment.
Refer to Table 3.
Table 3: Field Configuration LED Program Indication
LED INDICATOR
CONSTANT ON
FLASHING
Yellow
Zero/Full-Scale
(labeled “Z/FS”)
Zero
Full-Scale
801T-1500 Only
Yellow Relay
(labeled “RLY”),
High or Low
Setpoint
High or Low
Dropout
CAUTION:
Do not insert sharp or oversized objects into the
switch openings as this may damage the unit. When depressing
the push-buttons, use a blunt tipped object and apply pressure
gradually until you feel or hear the tactile response.
Note:
The transmitter’s input type, temperature units, sensor
break direction, CJC on/off (TC models), input wiring (RTD
models), and output range can only be set via the IntelliPack
Configuration Program. For example, use the software to select
a Type J thermocouple, degrees Celsius units, CJC ON, a normal
acting 4 to 20mA output. You may use field program mode to
scale virtually any part of the input range to the selected output
range via the front panel push buttons. For example, use the 0 to
200
C portion of the type J TC input to drive the 4 to 20mA output
range--this configuration will be used as an example range in the
following procedure.
IMPORTANT:
You must allow the unit to warm-up, powered and
oriented as in its final application, for at least 5 minutes prior to
calibrating the unit. Failure to warm the unit prior to calibration
may result in measurement error.
1. Connect a precise voltage source; thermocouple calibrator,
or RTD calibrator to the input, as required (refer to Electrical
Connections Drawing 4501-681). Also, according to the
module’s output configuration, connect a precise current or
volt meter to read the
transmitter’s output signal.
2.
Apply power and the module’s green “Run” LED will light.
3. Press and hold the
“MODE”
push button until the green
“Run” LED turns OFF and the yellow “Zero/Full-Scale” LED
turns ON. In this mode, the unit is ready to accept a zero
input for the transmitter (equivalent to the scaling input for
0% output). If you do not wish to change the zero
parameter, skip to step 7.
4. Adjust the input source to the zero value (this value must be
within the input range selected). For our example: use 0
C.
5. Press the
“UP”
or
“DOWN”
push-button once. Refer to
Functional Block Diagram 4501-689 and note that internally,
the output of the Range Adjust Box is now set for 0.0% for
the input zero value of 0
C. The transmitter will adjust it’s
output to the minimum output value (4.000mA). If the
measured output is not exactly at the zero level (4.000mA),
press the UP or DN switches continuously until the desired
output is achieved.
Note:
After first pressing the UP & DN push-buttons, they
will function as trim adjustments for the output stage. The
output trim adjustment should be limited to
10%. Each
successive depression of the “UP” or “DN” switch will
increment or decrement the output signal by a small
amount. Holding the switch depressed will increase the
amount of increment or decrement.
6. Press the
“SET”
push-button to accept the zero value.
Note that every time “SET” is pressed, the yellow “Status”
LED will flash once and the zero output will be captured.
7. Press the
“MODE”
push button one time. The yellow
“Zero/Full-Scale” LED will flash on/off, indicating that the unit
is ready to accept the full-scale value (equivalent to the
scaling input for 100% output). If you do not wish to change
this parameter, skip to step 11.
8. Adjust the input source to the full-scale value (the input
value must be within the input range selected). For
example: 200
C.
Note:
The full-scale value must be
greater than the zero value. If the zero and full-scale points
are too close together, performance will be degraded.
