red lion ITMA, Руководство пользователя

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3
WIRING CONNECTIONS
All conductors should meet
voltage and current ratings for each
terminal. Also, cabling should
conform to appropriate standards of
good installation, local codes and
regulations. It is recommended that
power supplied to the unit be
protected by a fuse or circuit
breaker. When wiring the unit, use
the numbers on the label to identify
the position number with the proper
function. Strip the wire, leaving
approximately 1/4" (6 mm) of bare
wire exposed (stranded wire should
be tinned with solder). Insert the
wire into the terminal, and tighten
the screw until the wire is clamped
tightly.
INPUT, OUTPUT, AND POWER CONNECTIONS
INPUT
Ensure thermocouple wire ends are stripped and clean. Connect positive
thermocouple lead to terminal #7 (TC+). Connect negative thermocouple lead
to terminal #8 (TC-). If the thermocouple probe cannot be connected directly to
the module, thermocouple wire or thermocouple extension-grade wire must be
used to extend the connection (copper wire does not work). Always refer to the
thermocouple manufacturer’s recommendations for: mounting, temperature
range, shielding, etc.
OUTPUT
Connect the output signal wires to the desired output terminals. For voltage
output, use terminals #4 and #6; for current output, use terminals #1 and #3
observing proper polarity. Only one output may be used at a time. The unit is
factory set for a 4 to 20 mA output. The voltage output will track the current
output nominally within a ±2.5% deviation range.
To select 0 to 20 mA, output you must open the case and cut the wire jumper.
The jumper is located to the left side of the board as shown in the drawing.
POWER
Connect DC power to terminals #10 and #12 observing proper polarity. Be
certain DC power is within the 9 to 32 VDC specifications.
POWER LED
The ITMA has a green LED located on the front to indicate that power is
applied to the unit.
DIP SWITCH SETTING DESCRIPTIONS
TC Type and Range switch settings (ON = 1 OFF = 0)
FACTORY SETTINGS
The unit is shipped from the factory calibrated for a 4 to 20 mA output using
a type J thermocouple in range 3. The ITMA should be Field calibrated by the
operator for the application environment it will be used in. If the unit is not
recalibrated by the operator, the following table lists the temperature ranges for
the given thermocouple types.
TROUBLESHOOTING
For further technical assistance, contact technical support at the appropriate
company numbers listed.
SWITCH LABEL DESCRIPTION
1 OUTPUT CAL Output Calibration
2 FIELD CAL Field Calibration
3 BASIC CAL Basic Calibration
4 ICE PT DIS/EN Ice Point Compensation -
Disabled (ON) / Enabled (OFF)
5 OPEN SEN UP/DN Open Sensor Detection -
Upscale (ON) / Downscale (OFF)
6
7
8
TC TYPE Thermocouple Type - 3 switch
combination setting
9
10
RANGE Sensor Range - 2 switch
combination setting
mV 1 1
DIP SWITCH
TC
TYPE
6 8 7
J 0 0 0
K 0 1 0
T 0 0 1
E 0 1 1
DIP SWITCH
RANGE
9 10
0 0 0
1
1 0 1
2 1 0
3 1 1
TYPE
T
J
RANGE
3
3
NOMINAL FACTORY FIELD CALIBRATION
TEMPERATURE RANGE
-195°C to 162°C
-50°C to 500°C
E
K
3
3
3°C to 602°C
-85°C to 790°C
Remove this
side of the
unit case.
WIRE JUMPER
ERROR
POWER
VDC+ 10
TC+ 7
V+ 4
I+ 1
VDC-
TC-
12 11
9 8
6 5 V-
3 2 I-
POWER SUPPLY
9 to 32 VDC
+
-
VOLTAGE METER
OR
CURRENT METER
MONITORING INSTRUMENT