Related Manuals for SMC Networks ZK2-ZS A Series
Summary of Contents for SMC Networks ZK2-ZS A Series
- Page 1 NO.ZK2-OM00501-C PRODUCT NAME Digital pressure switch for energy-saving control ejector MODEL / Series / Product Number ZK2-ZS ####-A...
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Page 2: Table Of Contents
Table of Contents Safety Instructions Model indication and How to order Summary of Product parts Definition and terminology Wiring Wiring Internal circuit and wiring example Mounting and Installation Installation Easy Setting Measurement mode Function Setting Function selection mode Default setting F0 Unit selection function F1 OUT1 F2 OUT2... -
Page 3: Safety Instructions 2 C
Safety Instructions These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of "Caution", "Warning" or "Danger". They are all important notes for safety and must be followed in addition to International 1) standards (ISO/IEC) and other safety regulations. - Page 4 Caution The product is provided for use in manufacturing industries. The product herein described is basically provided for peaceful use in manufacturing industries. If considering using the product in other industries, consult SMC beforehand and exchange specifications or a contract if necessary. If anything is unclear, contact your nearest sales branch.
- Page 5 Operator This operation manual is intended for those who have knowledge of machinery using pneumatic equipment, and have sufficient knowledge of assembly, operation and maintenance of such equipment. Only those persons are allowed to perform assembly, operation and maintenance. Read and understand this operation manual carefully before assembling, operating or providing maintenance to the product.
- Page 6 Caution ■Do not touch the terminals and connectors while the power is on. Otherwise electric shock, malfunction or damage to the product can result. ■Perform sufficient trial run. Otherwise, injury or damage to the system can result due to suction failure depending on the conditions of the suction of the workpiece or the pressure switch settings.
- Page 7 ●Product handling Installation •Tighten to the specified tightening torque. If the tightening torque is exceeded the mounting screws and brackets may be broken. If the tightening torque is insufficient, the product can be displaced and loosen the mounting screws. (Refer to page 17) •Be sure to ground terminal FG when using a commercially available switch-mode power supply.
- Page 8 Wiring •Do not pull the lead wires. In particular, never lift a Pressure switch equipped with fitting and piping by holding the lead wires. Otherwise damage to the internal parts can result, causing malfunction or to be off the connector. •Avoid repeatedly bending or stretching the lead wire, or placing heavy load on them.
- Page 9 •Prevent foreign matter such as remnant of wires from entering the Pressure switch. Take proper measures for the remnant not to enter the Pressure switch in order to prevent failure or malfunction. •Do not use the product in an environment that is exposed to temperature cycle. Heat cycles other than ordinary changes in temperature can adversely affect the inside of the product.
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Page 10: Model Indication And How To Order
Model Indication and How to order How to order Lead wire with connector NO.ZK2-OM00501-C... -
Page 11: Summary Of Product Parts
Summary of Product parts Output (OUT1) LED (Green): LED is ON when the switch output (OUT1) is ON. Output (OUT2) LED (Red): LED is ON when the supply pilot valve signal is ON. LED display: Displays the current status of pressure, setting mode and error code. button (UP): Selects a mode and increases ON/OFF set value. -
Page 12: Definition And Terminology
■Definition and terminology Terms Meaning Display type where each individual display character consists of up to 7 7-segment indication separate sections (called segments) (The figure “8” uses all 7 segments) Indicate the command signal which generate vacuum. Adsorption directive signal (It is necessary to input the pressure switch) A function of the Pressure switch to automatically setup pressure just by having equipment hold and release a workpiece via vacuum adsorption. - Page 13 Terms Meaning Indication accuracy Shows the deviation between displayed pressure value and the true pressure. Insulation resistance of the product. Insulation resistance The resistance between the electrical circuit and the case. How fine the rated pressure range can be segmented. (Example: If a product Indication resolution for 0 to 1 MPa can indicate pressure by 0.001 MPa, the indication resolution is 1/1000.)
- Page 14 Terms Meaning Peak value display Displays the maximum vacuum pressure reached up to that moment. The solenoid valve which turns ON and OFF the ejector. Pilot valve for air supply (This pressure switch outputs signal to the supply pilot valve) PNP (open collector) (output) The switch that uses the PNP transistor for output.
- Page 15 Terms Meaning Setting of function Refer to "Function selection mode". Setting pressure range. The pressure range within which switch output can be set. Output type that only has 2 possible states, ON or OFF. Sometimes referred to Switch output as "ON-OFF output". Function to change the unit in which the value of pressure is indicated.
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Page 16: Wiring
Wiring ■Wiring ○Connection •Connections should only be made with the power supply turned off. •Use separate routes for the Pressure switch wiring and any power or high voltage wiring. Otherwise, malfunction may result due to noise. •Ensure that the FG terminal is connected to ground when using a commercially available switch-mode power supply. -
Page 17: Internal Circuit And Wiring Example
■Internal circuit and wiring example •NPN output type NPN open collector 1 output, Max. applied voltage 26.4VDC, Max. load current 80mA Residual voltage 2 V or less •PNP output type PNP open collector 1 output, Max. load current 80mA, Residual voltage 2 V or less *1 When the supply valve is operated under energy saving control (for suctioning of workpiece), power is supplied to the gray line (FUNC) if the valve is N.C. -
Page 18: Mounting And Installation
Mounting and Installation ■Installation Mount the O-ring provided into the O-ring groove of the pressure switch, and mount the pressure switch to the ejector body with the two mounting screws provided. (The required tightening torque is 0.08 to 0.10Nm) If the tightening torque is exceeded, the mounting part can be deformed and broken. O-ring groove O-ring installation Enlarged... -
Page 19: Easy Setting
Easy Setting ■Measurement mode The measurement mode is the condition where the pressure is detected and indicated, and the switch function is operating. This is the basic mode, and other modes should be selected for setting changes and other function settings. The power is supplied Display to show the number "134"... - Page 20 See below for the energy saving control operation and the set values which are preset to the switch. If the operation shown below is acceptable, then keep these settings. Function that enables the easy setting of the ON and OFF points of the switch output, and the operation of the supply pilot valve.
- Page 21 For N.O. specification ● Operation of OUT1 When the vacuum level exceeds the set value (P_1), the switch output will be turned ON. When the vacuum level falls below the set value (P_1) by the hysteresis value (H_1) or more, the switch output will be turned OFF.
- Page 22 <How to change the set value> ｢Normal output (OUT1)｣ (1) Press the button once in measurement mode. (Refer to page 18) (2) “P_1" and the set value are displayed in turn. (3) Press the button to change the set value. button is to increase vacuum pressure and the button is to decrease.
- Page 23 ｢Reversed output (Out1)｣ -22- NO.ZK2-OM00501-C...
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Page 24: Function Setting
Function Setting ■Function selection mode In measurement mode, press the button for 2 seconds or longer to display [F 0]. Select to display the function setting to be changed, [F Press the button for 2 seconds or longer in function selection mode to return to measurement mode. ■Default setting The default settings are as follows •[F 0] Unit selection function... - Page 25 •[F 2] Setting of OUT2 See page 28 [For N.C.specification] Item Description Default setting Supply pilot valve Sets the ON point of the supply pilot valve signal 5 kPa(H_2) at signal ON Supply pilot valve Sets the OFF point of the supply pilot valve signal 0 kPa(H_3) at signal OFF Set the range in which...
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Page 26: F0 Unit Selection Function
■[F 0] Unit selection function Setting is only possible when using a product with the unit selection function. (kPa/MPa can still be selected if the product does not have the unit selection function.) <Operation> Press the button in function selection mode to display [F 0]. Press the button. -
Page 27: F1 Out1
■[F 1] Setting of OUT1 The output mode of OUT1 can be set. Reversed output, pressure value and hysteresis can be set. •List of output modes Normal output (Default setting) -26- NO.ZK2-OM00501-C... - Page 28 <Operation> Press the button in function selection mode to display [F 1]. Press the button. Move on to the check of output mode. Check of output mode Check the set value same as the display shown to the right, then move on to next setting. Press the button to set.
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Page 29: F2 Out2
■[F 2] Setting of OUT2 Set OUT2. Set ON and OFF points of the supply pilot valve signal, and the range in which an input is not allowed. For how to stop the energy-saving control function, refer to page 48. •For N.C.specification Operation of OUT2 Turning ON the suction command signal turns ON OUT2, opens the supply valve, and starts vacuum... - Page 30 •For N.O.specification Operation of OUT2 Turning OFF the suction command signal turns OFF OUT2, opens the supply valve, and starts vacuum suction. When the vacuum level reaches the set value (P_1 - H_3: supply pilot valve signal ON point), OUT2 will be turned ON, the supply valve will be closed, and vacuum generation will be stopped.
- Page 31 <Operation> •For N.C.specification Press the button in function selection mode to display [F 2]. Press the button to set. Move on to setting of pressure. Press the button to change the set points. Setting ON point of the supply pilot valve signal Press the button to set.
- Page 32 •For N.O.specification Press the button in function selection mode to display [F 2]. Press the button to set. Move on to setting of pressure. Press the button to change the set points. Setting OFF point of the supply pilot valve signal Press the button to set.
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Page 33: F3 Response Time
■[F 3] Response time Select the response time of the switch output. Output chattering can be prevented by setting the response time. <Operation> Press the button in function selection mode to display [F 3]. Press the button. Move on to setting of response time. Setting of response time Press the button to select the... -
Page 34: F4 Auto-Preset
■[F 4] Auto-preset function This function calculates and sets the pressure values automatically based on the on-going operation. <Operation> Press the button in function selection mode to display [F 4]. Press the button. Move on to setting of auto-preset function. Setting of auto-preset Press the button to select auto-preset. - Page 35 •Auto-preset When auto-preset is selected in function selection mode, the set value can be calculated and memorized from the measured pressure. Repeating the suction and release of a workpiece several times automatically optimizes the set value. 1, Selection of auto-preset OUT1 Press the button in measurement mode to display "AP1".
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Page 36: F6 Fine Adjustment Of Display Value
■[F 6] Fine adjustment of display value This function is used to manually perform fine adjustment of the displayed pressure. It is adjustable within the range 5% R.D. ± <Operation> Press the button in function selection mode to display [F 6]. Press the button. -
Page 37: F11 Display Resolution
■[F11] Display resolution This function is used to change the pressure display resolution. This can be used to prevent the digits from flickering on the display. <Operation> Press the button in function selection mode to display [F11]. Press the button. Move on to setting of display resolution. -
Page 38: F80 Power Saving Mode
■[F80] Power saving mode Power saving mode is selectable. When selected and no buttons are pressed for 30 seconds, the pressure switch will shift to power saving mode. The default setting is normal mode (power saving mode OFF). <Operation> Press the button in function selection mode to display [F80]. -
Page 39: F81 Security Code
■[F81] Security code A security code can be selected, which must be entered to unlock the keys when the keys are locked. In the default setting, entry of a security code number is not required. <Operation> Press the button in function selection mode to display [F81]. Press the button. -
Page 40: F90 Setting Of All Functions
■[F90] Setting of all functions All functions can be set, one after the other. <Operation> Press the button in function selection mode to display [F90]. Press the button. Move on to setting of all functions. Setting of all functions Press the button to select all functions. - Page 41 •Order of function of setting Order Function Selection of display unit Setting of output mode (OUT1) Setting of reversed output (OUT1) Setting of pressure (OUT1) Setting of hysteresis (OUT1) Setting of output mode (OUT2) Supply pilot valve signal ON point (For N.C. specification) Supply pilot valve signal OFF point (For N.O.
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Page 42: F96 Check Of Suction Command Signal
■[F96] Check of suction command signal <Operation> Press the button in function selection mode to display [F96]. Press the button. Move on to the suction signal input check. Check of the input of suction command signal status When suction signal is not input, “oFF” is displayed. -
Page 43: F98 Check Of Output
■[F98] Check of output Output from the switch can be confirmed. The output can be turned ON/OFF manually. <Operation> Press the button in function selection mode to display [F98]. Press the button. Move on to check of output. Output check Press the button to select output check. - Page 44 OUT2 check of output Press the button to select check of output2. Press the After returning to [n](normal output), button for 2 press the button to complete the seconds or output check. longer. Setting of [F98] Check of output completed. Measurement mode.
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Page 45: F99 Reset To The Default Setting
■[F99] Reset to the default setting If the setting of the pressure switch becomes unknown, the default setting can be restored. <Operation> Press the button in function selection mode to display [F 99]. Press the button. Move on to reset to the default setting. Reset to the default setting Set the display [ON] by pressing the button,... -
Page 46: Other Settings
Other Settings ○Peak/Bottom hold value display The maximum (minimum) vacuum pressure from when the power was supplied to this moment is detected and updated. For peak display, when the button is pressed for 1 second or longer, the maximum vacuum pressure and "Hi"... - Page 47 <Operation -With security code-> •Locking 1, Press and hold the button for 5 seconds or longer in measurement mode. [UnL] is displayed. 2, Press the button to select locking of the keys [LoC]. 3, Press the button to enter the setting. •Unlocking 1, Press and hold the button for 5 seconds or longer in measurement mode.
- Page 48 •How to change the security code At the time of shipment, the security code is set to [000], but this can be changed to any number. <Operation> 1, After the key lock setting has been completed, perform all three steps in the unlock setting procedure.
- Page 49 How to stop energy-saving control function If a large amount of leakage is generated at the work piece adsorption surface, energy-saving control frequently occurs (the valve is turned ON and OFF when the vacuum is generated / stopped). In order to avoid this phenomenon, update the switch setting to stop the energy-saving control as shown below.
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Page 50: Maintenance
Maintenance How to reset the product for power cut or forcible de-energizing The setting of the product will be retained as it was before a power cut or de-energizing. The output condition is also basically recovered to that before a power cut or de-energizing, but may change depending on the operating environment. -
Page 51: Troubleshooting
Troubleshooting Troubleshooting • Applicable Pressure switch: ZK2-ZS -A If an operational failure of the pressure switch occurs, please select the cause of failure from the flow chart below. If a cause applicable to the failure cannot be identified and normal operation can be recovered by replacement with a new pressure switch, this indicates that the pressure switch itself was faulty. - Page 52 The display The display is not Refer to fluctuates normal reference No.7 The display Refer to disappears reference No.8 The display Refer to breaks off reference No.8 The display Refer to flashes reference No.9 Pressure display difference when using Refer to 2 or more Pressure reference No.10 switches...
- Page 53 • Cross-reference for troubleshooting Error Problem Possible cause Investigation method Countermeasure •Output remains (1) Check the set pressure value. (1) Reset the pressure (2) Check the settings of the Indication LED Incorrect pressure settings. hysteresis and output type. remains ON. setting (2) Reset the function (Normal output/reversed...
- Page 54 Error Problem Possible cause Investigation method Countermeasure (1)，(2) Connect the (1) Check if the output current is 80 mA or more. appropriate load. (2) Check if the specified load is (3) Use a relay with a surge Over current to connected.
- Page 55 Error Problem Possible cause Investigation method Countermeasure Incorrect power Check if the power supply voltage is Supply power supply supply in the range 24 VDC ±10%. voltage of 24 VDC ±10%. Check the power supply wiring Check if the brown and blue wires are Correct the wiring and/or Incorrect wiring connected to DC(+) and DC(-)
- Page 56 Error Problem Possible cause Investigation method Countermeasure Install a 5 m filter to prevent foreign matter from getting into the pressure Check if any foreign matter has Foreign matter port. entered the pressure port. Also, clean the filter regularly to prevent drainage deposits.
- Page 57 Error Problem Possible cause Investigation method Countermeasure Effect of line pressure fluctuation (1) Check the set pressure values (1) Widen the hysteresis. because (hysteresis) (2) Change the response hysteresis is too (2) Check the response time. time setting. narrow or response time is Operation is too short...
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Page 58: Error Indication
■Error Indication This function is to display error location and content when a problem or an error occurs. Error Display Error Type Troubleshooting Method Error Name Turn the power off and remove the The switch output load current is more Over current Error cause of the over current. -
Page 59: Specification
Specification ■Specifications Rated pressure range -100 to 100 kPa Set pressure range -105 to 105 kPa Proof pressure 500 kPa Smallest settable increment 0.1 kPa Applicable fluid 12 to 24 VDC ±10%, Ripple (p-p) 10% or less Power supply voltage (Protected against reverse connection) Current consumption 40 mA or less... - Page 60 Revision history Shorten the start-up time Elimination of copying function Fixed output of OUT2 B: How to stop energy-saving control function C: N.O. specifications added 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN Tel: + 81 3 5207 8249 Fax: +81 3 5298 5362 https://www.smcworld.com Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.
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