K-Patents mA-Output - Manual (Page 4)

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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 maxi-
mum 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 sin-
gle 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.