INSTRUMENT HANDBOOK DeviceNet VP51 Digital Proportional Control Valve

Transcription

1 INSTRUMENT HANDBO DeviceNet VP5 Digital Proportional ontrol Valve To download the product EDS file visit DeviceNet VP5 Manual Ver., 9/0/0

2 Table of ontents. Introduction. Safety 3. Operating Description. Dimensional Details 5. Installation Pneumatic Electrical DeviceNet 6. DeviceNet Interface Details 7. Local User Interface Details 8. E Declaration of onformity 9. ODVA Declaration of onformity. INTRODUTION The DeviceNet VP5 Programmable Digital Proportional ontrol Valve for industrial pneumatic pressure control applications. The DeviceNet VP5 can be configured to meet application requirements. Fluid Output Pressure Range Supply Pressure Flow apacity ontrol Signal Electrical Supply Operating Temperature compressed air 0-50 psig (or 0-0bar) user definable. For applications where the user defined span is less that 50% of maximum (<75psi, 5bar) please consult Norgren. Up to 00psig/bar max 300 l/min/6slfm bit polled output from DeviceNet Powered from DeviceNet (current consumption < 00mA) -0 to 50 (ambient) Warranty A two year warranty applies to all Norgren products. For terms and conditions ask for a copy of our General onditions of Sale.. SAFETY ompressed air in its basic state or in its more sophisticated applied forms can result in accidents if it is not properly used. We therefore draw your attention to the following paragraphs*: The Health and Safety at Work Act (97) makes specific requirements on suppliers and users. To conform with these requirements IMI Norgren Ltd. has, so far as it is reasonably practicable, designed, constructed and tested its products so as to be safe when properly used. Many of our customers, being suppliers as well as users, are reminded of the imposed duties of the above Act and when expediting these duties our technical staff will be pleased to advise. We cannot accept responsibility for the design of plant which might use our equipment and would recommend the use of European Norm (EN) standards and BS 575:Part 3 (988), (Note compliance with these standards does not in itself confer immunity from legal obligation). We also suggest the guidance booklet by the Health and Safety Executive HS(G)39, ompressed Air Safety that offers advice on the safe use of compressed air.

3 3. OPERATING DESRIPTION The DeviceNet VP5 is a programmable electronic proportional control valve. The pneumatic section is a diaphragm actuated precision glandless spool valve, pilot pressure applied to the pneumatic section controls the output pressure of the unit. The pilot pressure is generated and controlled electronically. The feedback signal from the outlet port is compared to the control signal required and ensures a consistent, stable output pressure. The electronics system requires a nominal V D supply signal (supplied from DeviceNet). With a 50 psi standard unit, the user can define their requirements through DeviceNet parameters, and set the application parameters needed for the unit, i.e. speed, proportional & integral gain, thresholds etc.. DIMENSION DETAILS =Inlet Port =Outlet Port 3=Exhaust Port 3

4 5. INSTALLATION Pneumatic Installation Supply Pressure: 5psig above maximum output required (00psig max.) Output Pressure Range: 0-50psig Media: clean, dry 5µ filtered air Porting: G/; /NPT; ISO Manifold Mount Use oil-free air Do not use PTFE tape G/ & /NPT variants Exhaust port (3) Supply port () Electrical connector 3 Return spring housing. Do not adjust. Output port () onnect pipe-work using 0mm OD, 8mm ID, plastic pipe, cut cleanly at right angles, with push-fit pipe connections. Fit an exhaust silencer to Port 3 if required (this will only slightly degrade exhaust performance) ISO Manifold Mount variant Exhaust port (3) Supply port () Output port () Exhaust port (3) Electrical connector Return spring housing. Do not adjust. Output port () ISO- sub base mounting holes Supply port () Use grub screws provided to plug cross drilled holes in interface plate Mount interface plate to ISO- sub base with four M6 screws, with gasket between plate and sub base. Place three O-rings in three counterbored holes in plate and mount VP5 with two M screws. VP5 mounting holes (M tapped) x Electrical Installation onnect the unit as follows using DeviceNet approved screened cable and a M female connector or with a ready made M DeviceNet cable: Pin : Pin : Pin 3: Pin : Pin 5: Drain (bare) V+ (red) V- (black) AN_H (white) AN_L (blue) 5 3 onnector pinout looking onto the end of the instrument

5 DeviceNet Installation Download the DeviceNet VP5 EDS file from Register the EDS file using a DeviceNet configuration tool (e.g. Rockwell RSNetworx). The device MAID and baud rate are factory set to address 63 and Autobaud (see notes & ). onnect the DeviceNet VP5 to a DeviceNet network. Use the keypad or your DeviceNet configuration tool to change the MAID and baud rate parameters as required. Map the polled i/o to a DeviceNet master device (e.g. PL scanner). ontrol the pressure by polling the polled input Demand Pressure over the range (=0-05% of output pressure range). Use a DeviceNet configuration tool (e.g. Rockwell RSNetworx) to change the DeviceNet VP5 parameters to suit the application (see note 3). Notes: ) MAID - The DeviceNet VP5 MAID is factory set to 63. Once the DeviceNet VP5 is powered, this can be changed either over the DeviceNet network or using the instrument s keypad. If the DeviceNet VP5 detects that another device on the network already has its MAID, it will display a Set Node Address message instructing you to change the its MAID using the keypad. See section 7 of this manual for more details. ) Baud rate - The DeviceNet VP5 is factory set with Autobaud detection. This means that it listens to the network, detects the baud rate and selects its own baud rate accordingly. In order for this to work, it is necessary for the DeviceNet network to already have two or more other devices actively communicating on the network. After successful Autobaud detection, the baud rate parameter automatically switches to the selected baud rate. To run the Autobaud function again, the baud rate setting must be changed back to Autobaud via the keypad or DeviceNet. If Autobaud detection is unsuccessful or if the instrument has previously been set to an incorrect baud rate, it will automatically display a Set Baud Rate message instructing you to change the baud rate using the keypad. See section 7 of this manual for more details. 3) ADR facility - The DeviceNet VP5 supports ADR (Automatic Device Recovery). If the PL has been configured to provide this feature and a DeviceNet VP5 is replaced with a new one, the PL will automatically detect the new one and configure its address and parameters to be the same as the device it is replacing. Refer to the PL and DeviceNet configuration tool instructions for more details. 5

6 6. DEVIENET INTERFAE DETAILS I/O Data Name I/O Type (see Note ) No. Bytes Format Demand Pressure Polled Output bit integer (0 to 095) 0 = minimum (zero) pressure 095 = full scale output + 5% span (see Note ) Actual Pressure Polled Input bit integer (0 to 095) 0 = minimum (zero) pressure 095 = full scale output + 5% span (see Note 3) Status Byte Polled Input Bit 0: Set if difference between Demand Pressure and Actual Pressure exceeds Error Limit (see parameter 0). Bit : Set if Bit 0 has been set for longer than Error Delay (see parameter ). Bit : Set if Actual Pressure Threshold A (see parameter ). Bit 3: Set if Actual Pressure Threshold B (see parameter 3). Bits -7: Not used. (See Note 3) Notes: ) Inputs and Outputs are defined from the perspective of the DeviceNet network. ) For 50 psi variant Demand Pressure value= 6 x (Required Pressure in psi), e.g. to output 00 psi, set Demand Pressure value to 600. For 0 bar variant Demand Pressure value = 390 x (Required Pressure in bar), e.g. to output 6 bar, set Demand Pressure value to 30. IMPORTANT - Only of the 6 bits in the two Demand Pressure bytes are used. The four most significant bits are ignored. Setting the Demand Pressure value above 095 or below 0 may lead to unpredicted output pressures. 3) If the polled input is read as a single value of 3 or more bytes, the two least significant bytes hold the actual pressure and the third least significant is the status byte. For example, a returned value of 660 (0x00F3) represents an actual pressure of 0x0F3 = 3900 = 00% full scale and a status byte of 0x0 = bit set. DeviceNet Parameters The following parameters are available via a DeviceNet configuration tool (e.g. RSNetworx) or via DeviceNet explicit messaging, using the class, instance, attribute and byte length details in the table. To use a DeviceNet configuration tool, it is necessary to register the DeviceNet VP5 EDS file on the configuration tool. The EDS file can be downloaded from Parameter No. Name Format Default Value lass Instance Attribute Byte length Baud Rate Selectable from: Autobaud 3 Autobaud, 5Kb/s, 50Kb/s, 500Kb/s (see note ) Serial Read only byte integer Factory 6 number set 3 Demand Pressure Read only integer, = minimum (zero) pressure 095 = full scale output + 5% span (same as polled output, see note ) - 3 (0x7) 6

7 Parameter No. Name Format Default Value lass Instance Actual Read only integer, Pressure 0 = minimum (zero) pressure (0x0D) 095 = full scale output + 5% span (same as polled input) 5 Status Read only byte (same as Byte polled input) 6 Speed Selectable integer, = fastest, 7 = slowest See fig. 7 Prop Gain Selectable integer = low gain, 7 = high gain (see note 3) See fig. 3 8 Int Gain Selectable integer = low gain, 7 = high gain (see note 3) See fig. 3 9 Dither Amplitude Selectable integer = no dither, 7 = maximum dither 0 Error Limit Selectable 0=05% (0-095) 0 = Error Limit Off 05% = Full scale output + 5% Error Delay Integer Set in 00ths of a second Threshold Selectable 0-05% (0-095) A 0 = Status Bit always set 3 Threshold B Pressure Units 5 Signal Failure Mode 05% = Full scale output + 5% Selectable 0-05% (0-095) 0 = Status Bit 3 always set 05% = Full scale output + 5% Selectable from: Bar, psi, kpa, Atm, kg/cm^ Sets units for pressure display on LD Selectable from Fail Safe, Fail Freeze Sets operation of device on loss of polled signal from network (see note ). Attribute Byte length 3-3(0x0D) (0x68) 3 05 (0x69) 3 06 (0x6A) 3 07 (0x6B) 0% (390) 00 ( secs) 50% (950) 00% (3900) Depends on part number 3 09 (0x6D) 3 0 (0x6E) 3 (0x6F) 3 (0x70) 3 08 (0x6) Fail Safe 3 3 (0x7) Notes: ) If the baud rate parameter is set to Autobaud the Device will automatically listen to the network and work out the correct baud rate. The baud rate parameter will then automatically be set to the appropriate baud rate and will remain at its new setting even after removing power from the Device. In order to run the Autobaud function again, the baud rate must be changed back to Autobaud via DeviceNet or via the keypad. ) Demand Pressure can only be set by means of a polled I/O message. It can be read but not set by explicit messaging. If no polled message is received, the output pressure is set according to parameter 5 Signal Failure Mode. If Fail Safe is selected, the output pressure will be zero when no polled messages are being received. If Fail Freeze is selected, the output pressure will remain at its last set value when no polled messages are being received. 3) To set the proportional gain, first set the integral gain to 0, then adjust the proportional gain to give the best possible response time without causing unacceptable overshoot or oscillations. Once proportional gain is set correctly, increase integral gain to achieve the best possible accuracy without causing unacceptable hunting (slow oscillations) on the output. See figs & 3. 7

8 Fig. - Speed Setting Effects at default Proportional and Integral Gain 0 Pressure, bar Time Fig. - Proportional Gain Effects at default Integral Gain and Speed 0 Pressure, bar Time 0. Fig. 3 - Integral Gain Effects at default Proportional Gain and Speed 0. Pressure, bar Time 8

9 7. LOAL USER INTERFAE DETAILS The DeviceNet VP5 includes an integral keypad and LD display. During normal operation, this will display the current output pressure of the instrument and its DeviceNet MAID (node address number). The keypad can be used to locally set the device MAID and baud rate. The complete menu structure is shown in fig.. Device goes online correctly xxx. psi Node xx Password **** Set-up omms DN Set Baud Autobaud xxx / Set Node xx / Reset : ycle Pow.. UP hange Password DN UP New **** onfirm **** Help com Incorrect baud rate or Autobaud fails Set Baud Rate Password **** Set Baud xxx Duplicate node address detected Set Node Address Password **** Set Node xx Reset : ycle Pow.. Figure Local User Interface Menu Structure 9

10 hanging MAID or Baud Rate From Normal Operating Mode When the Device is in normal operating mode (i.e. communicating on DeviceNet), the baud rate or MAID can be changed by following the steps detailed below: Press from the default screen to enter the user interface. Enter the password using the numbered arrow keys (see section on Password below). Press to enter the Set-up omms menu. Use the up and down arrows to select the required baud rate and press to accept. Alternatively, press to skip this stage or cancel changes to the baud rate. Use the up and down arrows to select the required MAID (node address) and press to accept. Alternatively, press to skip this stage or cancel changes to the MAID. If either the baud rate or the MAID have been changed, a message will be displayed reading Reset: ycle Power to Activate ancel to Abort. In order for the new settings to become active, the DeviceNet VP5 must be reset. This should be done either by disconnecting and reconnecting the device, or cycling the network power. Alternatively, press to return to the previous settings. From Baud Rate Fault ondition If the baud rate is incorrect or the Autobaud routine has not succeeded, the DeviceNet VP5 display will automatically switch to display the message Set Baud Rate. Under these circumstances, following the steps below: Press to enter the user interface. Enter the password using the numbered arrow keys (see section on Password below). Use the up and down arrows to select the network baud rate and press to accept. Use the up and down arrows to change the MAID (node address) if required, and press to accept. The message will be displayed reading Reset: ycle Power to Activate. In order for the new settings to become active, the DeviceNet VP5 must be reset. This should be done either by disconnecting and reconnecting the device, or cycling the network power. From Node Address fault condition If the DeviceNet VP5 detects that another device on the network already has its MAID (node address), it will automatically switch to Set Node Address. Under these circumstances, following the steps below: Press to enter the user interface. Enter the password using the numbered arrow keys (see section on Password below). Use the up and down arrows to change the MAID (node address) and press to accept. The message will be displayed reading Reset: ycle Power to Activate. In order for the new settings to become active, the DeviceNet VP5 must be reset. This should be done either by disconnecting and reconnecting the device, or cycling the network power. User Interface Password Entry into the local user interface is password controlled to prevent unauthorised access. All standard DeviceNet VP5s are shipped with the password disabled. In this case, press from the password screen to enter the user interface. To change the Password, enter the user interface and use the up and down arrows to select the hange Password menu. Press then enter and confirm the new password the password can be any combination of up to four digits in the range to, entered using the numbered arrow keys. In case the password is forgotten, there is an override facility from the password screen, press and hold down then press and hold down, whilst keeping held down. Hold down both until the user interface is entered (approx. 5 secs). 0

11 8. E DELARATION OF ONFORMITY The DeviceNet VP5 Digital Proportional Valve complies with the E Pressure Equipment Directive and the generic EM standards. BS EN : 00 Electromagnetic ompatibility Part 6- Generic Standard Emission standard for industrial environments BS EN : 999 Electromagnetic ompatibility Part 6- Generic Standards Immunity for industrial environments 9. ODVA DELARATION OF ONFORMITY