RCP20F001 | Sauter

Description

RCP20F001 | Sauter

RCP 20, 21: P-controller
How energy efficiency is improved Enables the implementation of individually optimised controls for maximum efficiency in pneumatic installations.
Areas of application Pneumatic control in ventilation and air-conditioning equipment of temperature, pressure, pressure differential, humidity and flow rate in combination with appropriate transducers.

Features

• P fixed-value controller
• P fixed-value/schedule controller
• Controllers can be used universally for the most varied of applications
• Housing, rack and front doors made of thermoplastic
• Suitable for wall or panel mounting
• Functional description and commissioning help inserted in front door
• Front panel with adjusters and 3 covered recesses for plug-in pressure gauge (XMP) making commissioning easier
• Setpoint adjuster XS adjustable manually with scales for all Centair measuring ranges
• All settings very easy to make with a coin and % scale
• M4 measuring connections, control action adjustable (delivered with control action B)
• Compressed-air connections Rp 1/8″ female thread
• Complies with directive 97/23/EC Art. 3.3 on pressure equipment

Technical description

• Supply pressure 1.3 bar ± 0.1
• Easily accessible adjusters for XS (setpoint), X P4 (P range), Tn (reset time), E (influence) and FF (schedule start point)

Inputs for:

• remote setpoint adjustment
• controlled variable
• command variable

Outputs for:

• output pressure for dampers or actuator

RCP 20 F001 fixed-value P-controller, min. limiter 400 40 0.7

RCP 21 F001 fixed-value + schedule P-controller 400 60 0.7

RCP 20: RCP 21:

Setpoint XS
0…100% Setpoint XS
0…100%
Remote adjust. of setpoint 0…100% Remote adjustment of setpoint 0…100%
P-band XP3 0…100% P-band XP3 0…100%
Zero point 0…100% Zero point 0…100%
Limiter B 0…100% Shift starting point FF 0…100%
Influence E 0.25…3
Supply pressure 3) 1.3 bar ± 0.1 Wiring diagram, RCP 20 A02686
Input pressures 0.2…1.0 bar Wiring diagram, RCP 21 A02687
Output pressures 0.2…1.0 bar Dimension drawing M297100
Permissible amb. temp. 0…55 °C Fitting instructions MV 3246

Accessories

0297103 000 Additional bag of scales with 8 different scales according to the transducer used.
0297133 000 Universal scales for setpoint adjuster XS; gradation 120, 80/160, 50/100, 30/60
1) 200 ln/h for RCP 20 with limiter B activated.
2) Without transducer; air consumption for transducer connection 3 is 33 ln/h more.
3) See section 60 on regulations concerning the quality of supply air, especially at low ambient temperatures.

Operation

RCP 20 and RCP 21

The transducer at connection 3 converts the control variable into the pneumatic standard signal 0.2…1,0 bar (equivalent to 0…100%) within its measuring range. This actual-value signal xi3 is compared with the fixed setpoint XS. If there is control deviation, the output pressure changes depending on the set P-band XP3 (P-control). When the actual value is equal to the setpoint (xi3 = XS), the output pressure always assumes the value zero (0.6 bar).
By including the limiter B, the RCP 20 allows the output pressure y to be limited to a (variable) minimum value.
With a pressure of 0.2…1.0 bar at input 6, the setpoint can be set remotely from 0…100%. The internal setpoint setting then functions as a minimum limitation. A restrictor (Ø 0.2 mm) for supplying the transducer is fitted at connection 3. The signals from the transducer and the output pressure can be checked via the M4 measuring connection or shown via the manometer.

RCP 21: additional functions

The transducer at connection 5 converts the command variable (e.g. outside temperature) into the pneumatic standard signal 0.2…1.0 bar (equivalent to 0…100%). This signal (xi5) is fed to the command circuit which, together with the setting parameters FF and E, creates a program for the setpoint shift of the following P-controller. The characteristic for the influence E can be placed in any of the four quadrants.
Because the outside temperature is often fed to more than one controller, the transducer at connection 5 must be supplied by a separate (Ø 0.2 mm) restrictor.
7168101003 04

Additional details

RCP 20: Front plate with adjusters for setpoint, P-band, zero and minimum limiter of y.
RCP 21: Front plate with adjusters for setpoint, P-band, zero, influence and shift starting point.
Additional information on accessories
0297103 000 Additional bag of eight alternative scales
5…35 °C 20…90% rh
-20…40 °C 0…5 mbar
0…120 °C 5…10 mbar
80…200 °C 10…15 mbar
Technical information
Technical manual: centair system 304991 003

Part Number: RCP20F001

Manufacturer: Sauter

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