Absolute Process Instruments DuoPak APD 2007 D Manuel - Page 2

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Absolute Process Instruments DuoPak APD 2007 D Manuel
Instructions
Electrical Connections
WARNING! All wiring must be performed by a qualified electrician or
instrumentation engineer. Consult factory for assistance.
Avoid shock hazards! Turn signal input, output, and power off
before connecting or disconnecting wiring.
Polarity must be observed for signal wiring connections. If the input
and/or output do not function, check wiring and polarity.
Each product is factory configured to your exact input and output
ranges as indicated on the white serial number label.
Check label for module operating voltage to make sure it matches
available power. The power supplies are fuse protected and the unit
may be returned to API for fuse replacement.
Outputs
For milliamp ranges determine if your devices provide power to the
current loop or if the loop must be powered by the APD module.
Typical voltage may be 9-24 VDC at your device's terminals if it
provides power to the loop.
Device for Output Channel 1
Measuring/recording device accepts a
voltage input.
Measuring/recording
device
has
an unpowered or passive mA input.
APD module provides the loop power.
Measuring/recording device has a mA
input and powers the current loop.
Device for Output Channel 2
Measuring/recording device accepts a
voltage input.
Measuring/recording
device
has
an unpowered or passive mA input.
APD module provides the loop power.
Measuring/recording device has a mA
input and powers the current loop.
Input 1, DC
For milliamp ranges determine if your devices provide power to the
current loop or if the loop must be powered by the APD module.
Typical voltage may be 9-24 VDC at your device's terminals if it
provides power to the loop.
DC Input Channel 1
Sensor or transmitter with a voltage output. 17 (–)
Transmitter with a mA output that pow-
ers the current loop. Typically a 3 or
4-wire device.
Transmitter with an unpowered mA
output. Typically a 2-wire device. APD
module provides loop power.
Input 2, Frequency
The input range is pre-configured at the factory. No input calibration
is necessary. The frequency input is compatible with most types of
sensors that product a minimum 100 mV amplitude change and a
minimum 5 microsecond pulse width. A 15 VDC supply is available
to power the sensor if required. Always refer to the sensor manu-
facturer's data sheet to determine supply voltage compatibility and
proper wiring.
Signal
Frequency Sensor Ch. 2
Com.
2 wire or Namur
22
n/a
requiring external power
2 wire self generating (VR)
21 (–)
21 (–)
22
3 wire PNP or NPN
Sensor Load
The frequency signal input is capacitively coupled to prevent any DC
in the input. Some sensors, typically those without an internal load
resistor, require a resistive load in order to function.
The resistor value may be specified by the sensor manufacturer
as the "minimum resistive load" or calculated from the sensor
manufacturer's specified "load current range".
The 15 VDC power supply is capable of providing 25 mA. A load
current range of 3 mA to 25 mA would typically use a 5 kΩ to 500
Ω resistor.
Module Power Terminals
Check white model/serial number label for module operating volt-
age to make sure it matches available power.
When using DC power, either polarity is acceptable, but for
consistency, wire positive (+) to terminal 25 and negative (–) to
terminal 28.
BSOLUTE
Mounting
The housing clips to a standard 35 mm DIN rail. The housing is IP40
rated and should be mounted inside a
panel or enclosure.
1. Tilt front of module down and position
the lower spring clips against the bot-
tom edge of DIN rail.
2. Push front of module upward until
upper mount snaps into place.
Removal
Avoid shock hazards! Turn signal
input, output, and power off.
1. Push up on bottom back of module.
2. Tilt front of module downward to
release upper mount from top edge
of DIN rail.
3. The module can now be removed
from the DIN rail.
Terminal Terminal
Calibration
3 (–)
4
(+)
Front-mounted Zero and Span potentiometers for each channel can
be used to compensate for load and lead variations.
3 (–)
4
(+20 V)
1. Apply power to the module and allow a minimum 30 minute
warm up time.
2. Using an accurate calibration source, provide an input to the
2 (–)
3
(+)
module equal to the minimum input required for the application.
Terminal Terminal
3. Using an accurate measurement device for the output, adjust the
Zero potentiometer for the exact minimum output desired. The
7 (–)
8
(+)
Zero control should only be adjusted when the input signal is at its
minimum. This will produce the corresponding minimum output
signal. Example: for 4-20 mA output, set the Zero control to 4 mA.
7 (–)
8
(+20 V)
4. Set the input at maximum, and then adjust the Span pot for the
exact maximum output desired. The Span control should only
6 (–)
7
(+)
be adjusted when the input signal is at its maximum. This will
produce the corresponding maximum output signal. Example: for
4-20 mA output, set the Span control to 20 mA.
5. Repeat adjustments for both output channels for maximum
accuracy.
Ch. 1 Sensitivity Adjustment
This multi-turn potentiometer provides an adjustable threshold
Terminal Terminal
level that the incoming signal must overcome before an output can
19
(+)
be produced. This is used to limit noise and minimize false input
signals that may cause erroneous readings.
17 (–)
19
(+)
Fully clockwise: (max. sensitivity), input threshold is ±25 mV.
Fully counterclockwise: (min. sensitivity), input threshold is ±2.5 volts.
Output Test Function
19 (–) 18
(+15 V)
When the Test button is depressed it will drive the output with a
known good signal that can be used as a diagnostic aid during
initial start-up or troubleshooting. When released, the output will
return to normal.
Each Test Cal. potentiometer is factory set to approximately 50%
output. Each can be adjusted to set the test output from 0 to 100%
of the output span. Press and hold the Test button and adjust the
corresponding Test Cal. potentiometer for the desired output level.
They may optionally be externally wired for remote test operation or
a manual override. See wiring diagram at right.
Sensor
Signal
Operation
Power
Input
The APD 2007 accepts one DC voltage or current input and one
frequency input and provides two optically isolated DC voltage or
(+15 V)
23
(+)
current outputs that are linearly related to the inputs.
n/a
23
(+)
Green LoopTracker
(+15 V)
23
(+)
each signal is being sensed by the input circuitry of the module.
They also indicates the input signal strength by changing in inten-
sity as the process changes from minimum to maximum.
If an LED fails to illuminate, or fails to change in intensity as the
process changes, check the module power or signal input wiring.
Note that it may be difficult to see the LEDs under bright lighting
conditions.
Two red LoopTracker output LEDs provide a visual indication that the
output signals are functioning. They become brighter as the input
and each corresponding output change from minimum to maximum.
For a current output the red LED will only light if the output loop cur-
rent path is complete. For either current or voltage outputs, failure to
illuminate or a failure to change in intensity as the process changes
may indicate a problem with the module power or signal output wiring.
API maintains a constant effort to upgrade and improve its prod-
ucts. Specifications are subject to change without notice. Consult
factory for your specific requirements.
ROCESS NSTRUMENTS, Inc.
Upper Mount
Spring Clips
input LEDs provide a visual indication that
®
1220 American Way Libertyville, IL 60048
800-942-0315
Phone:
APD 2007
Voltage
Device 1
–
+
Voltage
Output
1
2
3
4
Ch. 1
mA
Device 1
R
i
+
–
Loop
Loop
Power
Power
Source 1
Source 2
–
+
Current
Sinking
1
2
3
4
Output
Ch. 1
mA
Device 1
R
i
–
+ 20V
Current
Sourcing
Output
1
2
3
4
Ch. 1
External
Contacts
for Test
Function
9
10
11 12
Channel 1
Sensitivity
Output
Loop
Test Cal.
Tracker
Test
Span
Input
Loop
Zero
Tracker
APD 2007
Channel 1
DC to DC
Isolated Transmitter
17
18
19
20
+15V
–
R
i
mA
Xmtr 1
2 wire using 15 V supply
Ch. 1
bleed resistor is required
Current sourcing input
17
18
19
20
–
+
Loop
2 wire self-generating
Power
Source 1
+
–
R
i
mA
Xmtr 1
Ch. 1
Current sinking input
See sensor specs. if load
17
18
19
20
–
+
–
Voltage
Xmtr 1
Ch. 1
Voltage input
To maintain
load resistor is required
full isolation
avoid com-
25
26
27
28
bining power
supplies in
common with
28 Power AC or DC –
inputs, out-
26 Earth Ground
puts, or unit
25 Power AC or DC +
power.
api-usa.com
Fax: 800-949-7502
Voltage
Device 2
–
+
5
6
7
8
Ch. 2
mA
Device 2
R
i
+
–
–
+
5
6
7
8
Ch. 2
mA
Device 2
R
i
–
+ 20V
5
6
7
8
Ch. 2
13
14
15 16
®
Channel 2
Output
Loop
Test Cal.
Tracker
Test
Span
Input
Loop
Zero
Tracker
Channel 2
Frequency to DC
Isolated Transmitter
21
22
23
24
–
+Sig
2 Wire
15 kΩ typ.
See sensor specs. if
21
22
23
24
+Sig
–
2 Wire
21
22
23
24
+Sig
–
Load resis.
NPN
3 wire NPN
resistor is required
21
22
23
24
+Sig
PNP
Load resis.
3 wire PNP
See sensor specs. if