K-Patents mA-Output User Manual
INSTRUCTION MANUAL
mA OUTPUT UNIT SYSTEM
for PR-33 and PR-23
Table of contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Suggested configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1.1 Single-sensor PR-33 system with mA outputs . . . . . . . . . . . . . . . 2
1.1.2 Three-sensor PR-33 system with mA outputs . . . . . . . . . . . . . . . . 2
1.1.3 Four-sensor PR-33 system with mA outputs . . . . . . . . . . . . . . . . . 3
1.1.4 Two-sensor PR-23 system with remote mA outputs . . . . . . . . . . 3
2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 CPU (PR-10952) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Connecting the CPU to a DTR (PR-23 systems) . . . . . . . . . . . . . . . . 7
3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 IP address settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1.1 Recommended settings for a single sensor with one mA
output unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.2 Recommended settings for multiple instruments and outputs . 10
3.1.3 Sensors and outputs connected to a factory network . . . . . . . . 11
3.2 mA output settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 mA output unit specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 PR-10952 CPU unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 PR-10922 mA output unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1 Description 1
1 Description
The K-Patents mA output unit is used to convert the standard ethernet signal from a
PR-33 or a PR-23 sensor into a 4–20 mA output signal. The core of an output system
consists of a CPU and 1 to 4 mA output unit modules, each with two independent
galvanically isolated current outputs. The unit is powered with 24 V DC.
Figure 1.1 A CPU (PR-10952) with two
output unit modules (PR-10922) on a DIN rail
1.1 Suggested configurations
The mA output can be used in several different configurations. There are two questions which determine the modules required by the system:
• How many outputs are required?
• How is the system powered?
2 mA output instruction manual
Each mA output unit (PR-10922) has two independent current outputs. A maximum
of four mA output modules can be connected to the CPU (PR-10952), to give a maximum of eight current outputs. If, for example, five outputs are required, the system
consists of one CPU and three mA output modules.
If there is a 24-volt supply already installed into the control system, no separate
power supply is required. If a 24-volt connection is not available, a mains power
supply (PR-10951) can be used to supply the 24 V DC.
The following sections describe some typical PR-33 installations with mA outputs.
1.1.1 Single-sensor PR-33 system with mA outputs
• 1 pc PR-33
• 1 pc PR-10920, PoE switch (part of the PR-33 system)
• 1 pc PR-10952, CPU unit for mA outputs
• 1 pc PR-10922, mA output unit
• 1 pc PR-10951, 24 V power supply for the PoE switch and the CPU
This configuration enables mA outputs for concentration and temperature for a single PR-33, as there are two independent outputs in the mA output unit.
1.1.2 Three-sensor PR-33 system with mA outputs
• 3 pcs PR-33
• 1 pc PR-10920, PoE switch (part of the PR-33 system)
• 1 pc PR-10952, CPU unit for mA outputs
• 2 pcs PR-10922, mA output unit (gives a total of four outputs)
• 1 pc PR-10951, 24 V power supply for the PoE switch and the CPU
This configuration gives three concentration mA outputs, one for each sensor. If the
temperature outputs are required, an additional mA output unit (PR-10922) may be
added to give a total of 6 mA outputs.
1 Description 3
Mains power
PoE switch
+24 V power supply
Output unit CPU
Dual mA output unit
PR-33-S
PR-33-S
PR-33-S
PR-33-S
mA outputs
Dual mA output unit
1.1.3 Four-sensor PR-33 system with mA outputs
• 4 pcs PR-33
• 1 pc PR-10920, PoE switch (part of the PR-33 system)
• 1 pc PR-10952, CPU unit for mA outputs
• 2 pcs PR-10922, mA output unit (gives a total of four outputs)
• 1 pc PR-10951, 24 V power supply for the PoE switch and the CPU
This configuration gives four concentration mA outputs, one for each sensor. If the
temperature outputs are required, two additional mA output units (PR-10922) may
be added to give a total of 8 mA outputs.
Figure 1.2 Four-sensor system with in total 4 mA outputs
1.1.4 Two-sensor PR-23 system with remote mA outputs
• 1 pc PR-23 DTR
• 2 pcs PR-23 sensors
• 1 pc PR-10952, CPU unit for mA outputs
• 1 pc PR-10951, 24 V power supply for the CPU
• 2 pcs PR-10922, mA output unit
4 mA output instruction manual
A single PR-23 system may have two sensors connected to one transmitter (DTR).
The DTR has two current outputs, but in some cases it is useful to have extra outputs
or remote outputs.
In the system above the DTR is connected to the mA output unit CPU (PR-10952)
with a cross-over Ethernet cable so that no Ethernet switch is required. The two
mA output units give a total of four outputs so that both the concentration and the
temperature can be indicated for both sensors.
If the Ethernet cable is replaced by a fiber connection, the distance between the
DTR and the output unit may be up to several kilometers (miles).
The system can be expanded to accommodate more DTRs by adding an Ethernet
switch and mA outputs as required.
For wiring instructions, please see chapter 2.
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