---Pressure Independent Control Valve

Transcription

1 Datasheet No.: TPF-02 PICV for AHU TPF-Series ---Pressure Independent Control Valve Valve body material:ductile iron QT450-0 Caliber:DN50...DN250 Flow rate range: m3/h Standard of flange connection in accordance with ISO Characteristics Valve Stroke: Max 20/40mm. The Pressure Independent Control Valve (PICV) shall consist of two functional control elements. 2. The first element serves as an electrically actuated control valve, capable of responding to a control signal from a controller that is not part of the PICV. 3. The second element is based on the first element and serves to sense and regulate a preset flow differential pressure across the control valve. 4. Closing off differential pressure of actuator connected with PICV shouldn't be less than the pump head. 5. The PICV shall be precalibrated to a maximum flow rate as given by a customer. 6. Balancing cavity of PICV adopts built-in connecting pipe. It has more compact structure and can avoid damages during installation compared with external connecting pipe. 7. Higher in cut-off differential pressure while lower in the possibility of leakage. 8. Valve body is made of ductile iron material, with anticorrosion treatment on the surface, delicate in apperance. 9.The standard features of actuator are with manual function and power switch. 0. Control valve adopts straight travel proportional actuator, it has higher control accuracy. Equal linear flow character can be achieved ideally.. Maximum flow can be regulated by aperture potentiometer on PCB or by external KVS regulator. (Specification of KVS regulator refer to Page 7).

2 Technical Table PICV (-0~ +20 C) DN Caliber (mm) (in.) Valve Type PN Rated Flow Hightest medium temperature (m 3 /h) l/s GPM ( ) Stroke (mm) Actuator Recommended (N) Ps Range (Kpa) 50 2" TPF50-2VGC-S N 35~ /2" TPF65-2VGC-S N 35~ " TPF80-2VGC-S N 35~ TPF00-2VGC-S N 35~ TPF25-2VGC-S N 35~ TPF50-2VGC-S N 35~ TPF200-2VGC-S N 35~ TPF250-2VGC-S N 35~400 Notes: DN = Nominal diameter PN 25 is selectable, if PN25 is needed, change C to D in valve type. Valve Body:Ductile iron; Valve Seat:Stainless Steel; Valve Stem:Stainless Steel Valve stem retracts, valve tends to close. Opening-Kvs Table DN (mm) Actuator Type Rating Force Actual Force Operating Voltage Control Signal Manual Running speed Weight (KG) 50 TC000-X24-S.2 000N 000N~200N 24VAC 0(2)~0V, 0(4)~20mA Yes 3.85s/mm (50Hz).7 65 TC000-X24-S.2 000N 000N~200N 24VAC 0(2)~0V, 0(4)~20mA Yes 3.85s/mm (50Hz).7 80 TR3000-X24-S N 3000N~3500N 24VAC 0(2)~0V, 0(4)~20mA Yes 3.2s/mm (50Hz) TR3000-X24-S N 3000N~3500N 24VAC 0(2)~0V, 0(4)~20mA Yes 3.2s/mm (50Hz) TR3000-X24-S N 3000N~3500N 24VAC 0(2)~0V, 0(4)~20mA Yes 3.2s/mm (50Hz) TR3000-X24-S N 3000N~3500N 24VAC 0(2)~0V, 0(4)~20mA Yes 3.2s/mm (50Hz) TR5000-X24-S N 5000N~5500N 24VAC 0(2)~0V, 0(4)~20mA Yes 3.2s/mm (50Hz) TR5000-X24-S N 5000N~5500N 24VAC 0(2)~0V, 0(4)~20mA Yes 3.2s/mm (50Hz) 5.2 Notes: Differential Pressure Flow Curve Control/Feedback Signal display: LED screen DN opening(%)-kvs(m 3 /h) (mm) Aperture Flow Curve flow aperture 2

3 Relationship of Aperture and Flow Dimension Figure q=r (L-) "q" represents percentage of flow, namely ratio of current flow and max. flow. L represents percentage of opening, namely ratio of current opening and whole stroke. R represents adjustable ratio, namely ratio of max. flow and min. flow with control range. (our adjustable ratio is 50) Note:. This formula is the relationship of valve opening and flow with constant differential pressure. 2. While controlling valve opening by KVS regulator (see page 7), max. flow after setting can be calculated through this formula. DN B D D2 D4 K L L2 L3 H H WEIGHT(KG) Mounting Orientation Medium is chilled/hot water Downward installation is forbidden Maintenance When doing service work on the actuator:. Close the pump and turn off the power supply. 2. Close the shut-off valve, exhaust water in the pipe to reduce the pressure inside pipes.make water pipe(hot water) cool down naturally. 3. Dismantle electric wires from wiring terminals. Remark: Before debugging valve again, install actuator correctly.! Notice:When we do the pipe pressure testing and flushing, the valve body should be in a state of full open.this operation can not only protect the internal parts of valve body, but also prevent pipe from blocking. 3

4 Installation Pprepare for assembling the actuator, take down the 2 sliding block firstly, and then disentangle the clip. Keep the actuator s shaft and the valve s stem concentric, make these two connection faces keep coinciding. Then lock the two screws on the clip. 3 Pull the sliding block to the groove and lock it by two screws. 4 The status after assembled. PCB Diagram PCB diagram : Proportional type (24VAC ) TC000-X24.., dip switch S Self-stroking button Aperture potentiometer Connection terminal Power light B O O E Y Running light 20% 0 II UI UI II IO UO DA DW DF HS RA UP RF LS PCB diagram 2: Proportional type (24VAC ) TR3000/5000-X24.. CPU Self-stroking button Nexie tube function bit Warning light S 20% 0 II UI IO UI II UO DA DW DF HS RA UP RF LS ERR maximum opening Aperture potentiometer RUN Selectable function terminal Running light Nexie Tube digit bit 24VAC B O O E Y 5 6 UL DL AL Connection terminal 4

5 Control Signal/ Feedback Signal: 0(2)~0VDC, 0(4)~20mA TPF...series valve realize controlling by terminal O,E to control. Control Signal O,E increases: actuator shaft extends,the stem retracts Control Signal O,E decreases: actuator shaft retracts,the stem extends Control Signal O,E no change: actuator shaft and valve stem stays in the present position NOTES:. This DA mode was made before leaving factory,if RA mode needed(control signal increases, actuator shaft retracts), just put the 5th DIP swtich of from to. Nominal Setting of / Switch DIP Switch Function Starting of control/ feedback signal Type of control signal Impedance matching of control signal Type of feedback signal - Operating mode -2 Losing control signal mode Description 20%:the starting control / feedback signal is 20% (namely DC 4~20mA or DC 2~0V) 0:the starting control / feedback signal is 0 (namely DC 0~20mA or DC 0~0V) II: current signal UI: voltage signal UI: voltage signal II: current signal lo: current signal UO: voltage signal DA:DA mode (when control signal is increasing, the actuator shaft extends ) -3 Self-stroking mode RA: RA mode (when control signal is increasing, the actuator shaft retracts) DW: When lose control signal (voltage type), actuator will provide a min. control signal internally When lose control signal (current type), actuator will provide a min. control signal internally UP: When lose control signal (voltage type), actuator will provide a max. control signal internally When lose control signal (current type), actuator will provide a min. control signal internally DF: Power on each time, self-stroking starts automatically (factory setting) RF: Self-stroking starts only when press the red self-stroking button manually -4 Sensitivity Common Setting of Switch HS: the high sensitivity of control signal % (00%~40%);.5% (40%~30%) LS: the low sensitivity of control signal.5% (00%~30%) This is factory default setting. Control signal: 0~0VDC; output signal: 0~0VDC; RA mode; When lose input signal(voltage type), means input a minimum control signal, the actuator shaft extends. Aperture Potentiometer Control signal: 4~20mA; output signal: 4~20mA; RA mode; When lose input signal (current type), means input a minimum control signal, the actuator shaft extends maximum opening By aperture potentionmeter, max aperture can be settled from 00% to 30%. Flexibility adjust the relationship between the relative flow and opening of valve body, the factory default value is 00%. 5 00

6 Technical data Permissible pressure Standard of flange connection Leakage rate Permissible medium PN6,PN25 (optional) ISO % of Kvs Chilled water, cooling water, anti-freeze water refrigerant(r2 R22 R34a R202) glycol(under 50%) Operating Data Permissible operating pressure Stroke Protection level Power supply Power consumption Operating temperature.6mpa, 2.5Mpa 20mm(DN50~DN65), 40mm(DN80~DN250) IP54 24VAC ± 5%, 50/60Hz 000N<7.5VA; 3000N/5000N<5VA -0ºC~20ºC Material Valve body Valve surface Valve core Valve stem Seal ring Sealing structure Diaphragm Valve stem sealing Actuator housing Ductile iron Black unti-rust painting Stainless steel Stainless steel Teflon V model sealing gland + stainless steel spring auto-compensation EPDM Double O-Ring Sealed, EPDM 000N: PC 3000N/5000N: die-casting aluminum 6

7 KVS regulator Maximum flow can be regulated by TKVS- remotely which is easy to operate. TKVS- regulator can adjust the maximum flw coeffiient to change freely from 30% to 00%. Thus can save the unnecessary energy waste when the valve is working so to be energy-saving and environmentally friendly Technical data Power votage 24VAC±5%, 50/60Hz Self consumption appr.va Input signal 0(2)-0VDC, 0(4)-20mA (set by dip switch) Output signal 0(2)-0VDC, 0(4)-20mA (set by dip switch) Control model Proportional control (control proportional type valve) Opening regulating range 30%~00% Conversion output error % Wiring terminal Cover material ABS plastic Working environment Temperature: -20 to + 50ºC Humidity: 90%RH Net weight Appr. 0.kg Panel Instruction Wiring Diagram Dimension Figure 7