Catalogs >
SCHAKO KG >
VRAPPs

VRAPPs
1 / 20Pages

Catalog excerpts

08/15 - 2 Construction subject to change. Version: 13.03.2020 No return possible!

Volumetric flow controller VRAPPs Description The volumetric flow controller allows the volumetric flow in ducts to be kept constant or to be regulated using positive control Vmin, Vmax or "CLOSED". The volumetric flow controller can also be used as a room or duct pressure regulator. In VAV systems the volumetric flow controller can regulate variable volumetric flows between Vmin and Vmax as a function of the supply air (room temperature controller). The round volumetric flow controller type VRAPPs made of plastic PPs is suitable for use with air contaminated with aggressive components. The...

Open the catalog to page 3

Volumetric flow controller VRAPPs Distance to: Installation Installation information To avoid unnecessary controller errors, the min. distances according to the following table / drawings must be observed. For combinations of several connection pieces or pieces with fire dampers or silencers, the larger minimum distances must be observed. Distance to other connection pieces (e.g. T-junction, branching piece, reduction piece, etc.) Construction Housing - Plastic PPs Damper axle - Plastic PP Damper blade - Plastic PP Damper leaf seal - Silicone-free made of PUR (NW 110 sealing airtight to DIN...

Open the catalog to page 4

Volumetric flow controller VRAPPs Models and dimensions Dimensions with Gruner controller (standard) Dimensions of accessoriesFlat flange (-FF3, pair) on both sides Dimensions with Belimo controller NW NW 110 sealing airtight to DIN EN 1751 Class 2 NW 125-400 sealing airtight to DIN EN 1751 Class 3 Available sizes Construction subject to change.

Open the catalog to page 5

Volumetric flow controller VRAPPsTechnical data Volumetric flow range For the parameter setting of the control components, an air density of 1.2 kg/m3 has been taken into account. Attention, the following specifications are important for the programming of the volumetric flow controllers: - this table merely specifies the complete measuring range of the controller (volumetric flow range) - If the customer absolutely wants a calibration curve different from 12 m/s, it must be specified! Once it is approved by the competent department, it can be adjusted correspondingly. - When the air volume...

Open the catalog to page 6

Version: 13.03.2020 No return possible! Construction subject to change.

Open the catalog to page 7

Construction subject to change.

Open the catalog to page 8

Version: 13.03.2020 No return possible! Construction subject to change.

Open the catalog to page 9

08/15 - 10 Version: 13.03.2020 Construction subject to change. No return possible!

Open the catalog to page 10

Volumetric flow controller VRAPPs Circuit diagrams Circuit diagram controller Universal controller Belimo make VRP-VFP300 Connection diagram Positive control Connection via safety transformer Two-stage volumetric flow rate control Connection via safety transformer Connection via safety transformer Function CLOSED Vmin Vmax OPEN Universal controller Belimo make VRP-STP Connection diagram Positive control Connection via safety transformer Function Vmin Vmax Vmax Vmax Compact controller Belimo make VRP-M Connection diagram Connection via safety transformer Connection via safety transformer w1...

Open the catalog to page 11

Volumetric flow controller VRAPPs Controller Gruner make 227VM Compact Connection diagram and positive control Edit The selector value allows values to be changed. The position of the arrow shows the set value. The changes are displayed once the selector is moved ±10° from its position. Flow/Unit To set the required actual volumetric flow unit in m3/h and l/s. Vmin To set the required min. volumetric flow (setpoint value Y = 0V / 2V) Vmax To set the required max. volumetric flow (setpoint value Y = 10V) Connection via safety transformer Mode To set the direction of rotation: 0-n...0-10 V...

Open the catalog to page 12

Volumetric flow controller VRAPPsSetting the operating potentiometers / calculation formulae Set value for Vmax Calculation of the U5 voltage value EWV The required volumetric flow which should flow at the 10 V DC command signal at terminal 3 (w/Y) or with positive control Vmax is set in % at the Vmax potentiometer of the controller (VRP), the ZTH device (VRP-M) or PC tool (VRP-M). This value refers to the set Vnenn nominal volumetric flow. Set value for Vmin The required volumetric flow which should flow at the 0 V DC command signal (operating mode 0-10 V DC) or at the 2 V DC driving...

Open the catalog to page 13

Volumetric flow controller VRAPPs Actual value measurement via feedback signal U5 using a voltmeter or PC tool Terminal assignment VRP-VFP / VRP-M-VFP Supply voltage: 24 V AC/DC (terminals 1+2) Measurement output 2 - 10 V DC (terminals 1+5) Measurement output 0 - 10 V DC (terminals 1+5) (only possible with VRP-M) The actual value signal U5 is a real feedback of the volumetric flow actual value for monitoring and controlling the air throughput volume. Example Assume: Measurement output signal U5 = 6.3 V DC Calibration value VRAPPs = 12 m/sec Measured value: Duct velocity = 7.6 m/s Air...

Open the catalog to page 14

Volumetric flow controller VRAPPsTechnical data of controllers and motors VRP-VFP (make Belimo) For static differential pressure control with separately available sensors VFP-100, 300 or 600 Construction subject to change.

Open the catalog to page 15

Volumetric flow controller VRAPPsController standard 227VM-024-10-DS3 (make Gruner) Static pressure sensor, digital VAV controller and damper drive as a communication-capable VAV compact solution. Construction subject to change.

Open the catalog to page 16

Volumetric flow controller VRAPPs GUAC-SM3/SCH (make Gruner) Digital VAV controller, with static pressure sensor, position-independent als communication-capable universal solution. Damper drives...24-for VRP-VFP, VRP-STP, VRP-M LM24A-V Measuring principle: Supply voltage: SF24A-V (-ST for VRP-M only), (spring return actuator) Construction subject to change.

Open the catalog to page 17

Damper drives...24- (make Gruner) for GUAC-SM3/SCH Controller selection 328CS-024-10B-V/ST06 High-speed drive, ready to be plugged in for GUAC-... with position feedback Attention The volumetric flow controllers type VRAPPs are used for air contaminated with aggressive components. For this reason, the Belimo controllers VRP-VFP, VRP-M or the Gruner controller of type 227VM-024-10-DS3 are installed in the electric volumetric flow controllers. In these controllers, the air volume throughput is measured using a static differential pressure measurement. A membrane integrated in the controller...

Open the catalog to page 18