FOR AIR Digital Flow Switch Large Flow Rate Type Instruction Manual PF2A7 □ H Series URL http://www.smcworld.
CONTENTS Thank you for purchasing the SMC PF2A7□H Series Digital Flow Switch. Please read this manual carefully before operating digital flow switch and understand digital flow switch, its capabilities and limitations. Please keep this manual handy for future reference. OPERATOR ●This operation manual has been written for those who have knowledge of machinery and apparatus that use pneumatic equipment and have full knowledge of assembly, operation and maintenance of such equipment.
SAFETY The Digital Flow Switch and this manual contain essential information for the protection of users and others from possible injury and property damage and to ensure correct handling. Please check that you fully understand the definition of the following messages (signs) before going on to read the text, and always follow the instructions. IMPORTANT MESSAGES Read this manual and follow its instructions.
Model Indication Method PF2A7 H- Names and Functions of Individual Parts Display Part Unit Specification No Symbol: Unit selection function provided -M: SI units fixed Lead Wire Specification No Symbol: Lead wire with connector 3m N: None Lead wire with connector Output Specification 28: NPN open collector 1output + Analog output (1 to 5V) 29: NPN open collector 1output + Analog output (4 to 20mA) 68: PNP open collector 1output + Analog output (1 to 5V) 69: PNP open collector 1output + Analog output (4
Installation Before you mount a flow switch, read "SAFETY" and "Installation" described in this chapter carefully to obtain safe and correct measurement. Piping connections ●Observe the specified tightening torque when connecting pipes. Refer to the following table for the appropriate torque values. Mounting ●Use this flow switch under the specified operating pressure range. ●Use this flow switch under the specified operating temperature range. ●Withstand pressure is 2.25 MPa.
PF2A7 □ H- □ -28/68 When the Lead wire with connector provided by SMC corporation is used the color of wire (Brown, white, Black, Blue) shown on circuit diagram will be applied. Output : 1 to 5V PF2A7 □ H- □ -29/69 Output : 4 to 20mA −28, −29 NPN open collector 1 output + Analog output Max. 30V, 80mA Internal voltage drop : 1V or less Main Circuit 1 4 Load Analog Output 2 White Load 3 Blue ＋ − 24VDC −68, −69 PNP open collector 1 output + Analog output Max. 80mA Internal voltage drop : 1.
Setting OUT1 Output Specifications Setting Procedure : Check installation condition and wiring and set as below Normal mode * ▼ MODE ● MODE ● MODE ● MODE ● SET ● SET ● MODE ● MODE ● SET ● Note1) SET ● SET ● SET ● MODE ● SET ● MODE ● 10 Hysteresis mode mode of F_0 to F_7, returns to previous mode, pressing ▲ button moves a mode ahead. 1. Initial setting mode Yes OFF note2) ［n］ ON n_2 Instantaneous flow n_1 Window comparator mode n_1≧ n_2 2.
OUT1 Output Specifications (continue) Integration switch output (oU1_1) Function Setting 1. Initial setting mode See "Flow rate setting mode" to input setting value. note2) ［n］ Initial setting ON OFF n_3 Output mode Integrated flow ON ［P］ OFF P_3 Integrated flow Integration Pulse output(oU1_2) note2) ［n］ Flow rate setting Note 2) Input the flow set value to start switch output. Output mode selecting Select output mode(Reverse/non-reverse output).
Function Setting (continue) 2. Display selecting mode Select the display from instantaneous flow or integrated flow. Press ▲ button to select desired flow, then press SET ● button. 「d_1」means instantaneous flow,「d_2」integrated flow. 3. Display unit selecting mode Display unit can be selected when the unit spec. of model Indication is No Symbol. -M means the unit is fixed to SI unit. It does not go into Display unit selecting mode. See "Display unit selecting mode" below for details. 4.
Function Setting (continue) 7. Flow rate setting mode Input set value. Input method depends on OUT1 output specification. It does not go into Flow rate setting mode when the integration pulse output is selected as OUT1. Instantaneous switch output (oU1_0) 1. Press SET ● button to input n_1(P_1) set value. L/min 「n_1」and the set value appears in turn if previous OUT setting select reverse output mode. (「P_1」and the set value appears in turn when non-reverse output mode is selected) 2.
Other Functions Flow display check Check integrated flow when instantaneous flow is selected Integrated flow is displayed only during ▼ button is pressed. (Returns to instantaneous flow when releasing ▼ button.) ＊The unit of integrated flow is changed as［Ｌ］→［m3 ］→ ［m3 ×10 3 ］→［Ｌ］if press ▲ button while pressing ▼ button. Check instantaneous flow when integrated flow is selected Instantaneous flow is displayed only during ▼button is pressed. (Returns to integrated flow when releasing ▼button.
Specification PF2A703H PF2A706H Dry air PF2A712H 125 to 3025 250 to 6050 550 to 12050 125 to 3025 250 to 6050 550 to 12050 150 to 3000 300 to 6000 600 to 12000 Flow Rate Indication/Ran g e Flow rate indication range ( /min) Set flow rate range ( /min) Measured flow rate range ( /min) Measured min unit ( /min) Flow rate converted score of integrated pulse Integrated flow rate range Indication Unit (*1, 2) Operating fluid temp.
Full View with Dimensions (in mm) D B E A 55 FLOW SWITCH 60 C 2- G F (42.2) Flow direction 4 -I Thred depth J H 40 Thred G PF2A703H Rc1, NPT1, G1 PF2A706H Rc1･1/2, NPT1･1/2, G1･1/2 PF2A712H Rc2, NPT2, G2 Model No. A B C D E F H I J PF2A703H 55 160 40 92 67 55 36 M5×0.
