Components of pressurized enclosure system F870S ..............8 2.4.4 Leakage compensation ......................9 2.4.5 Continuous flow ........................10 2.4.6 F870S - Application using „Containment Systems “ ............. 10 Peripherals ........................... 11 2.5.1 Ex i- external sensory: ES872 ....................11 2.5.2 Configuration module: CM873 ....................11 2.5.3...
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F870S Inhalt Page 3 Dimensions ..........................27 Mounting examples ........................29 Flow diagram ..........................29 Block diagram ..........................30 Transport, Storing, Disposal and Repairs ..................31 Sequence of operation diagram ....................32 5.10 List of Parameters ........................33 The symbols WARNING, CAUTION, NOTE This symbol warns of a serious hazard.
F870S 1 Operation instruction for explosion protected device Page 4 Operation instruction for Explosion protected device Application and Standards This instruction manual applies to explosion-protected devices of types below. This apparatus is only to be used as defined and meets requirements of EN 60 079 particularly EN60 079-14 "electrical apparatus for potentiality explosive atmospheres".
EN 60079-2. This is a valid arrange- ment between the German notified bodies. Figure 1: Performance levels The pressurized enclosure system F870S reaches performance level „d“ according to EN 13849 and therefore it reaches SIL Level 2 according to IEC / EN 61508. Gönnheimer Elektronic GmbH Tel.: +49 (6321) 49919-0...
Based on the first introduction of proportional valve technology within pressurized enclosure systems (patented system Gönnheimer F850) an additional active proportional valve was integrated to the F870S in the outlet. Figure 2: block diagram simultaneous pressure and flow control This concept permits simultaneous PID-regulation of cabinet pressure and flow rate and generates new solutions and possibilities for pressurized enclosure systems and attach- ments.
F870S 2 Pressurized enclosure system F870S Page 7 2.3.2 Enlarged, free programmable range of operation In comparison to common Ex p control systems, the FS870S offers an increased and free programmable range of operation (characteristic pressure / flow curve). The conventional systems are characterized by a fixed pressure / flow curve (see e.g.
Components of pressurized enclosure system F870S The pressurized enclosure system F870S contains at least the control unit FS870S and a solenoid valve. Each can be mounted in- or outside the enclosure. Furthermore several re- mote controls (operation panels) are available to improve ease of operation. It is also pos- sible to connect intrinsically safe sensors to the control unit FS870S.
Wasting purge medium is no more a topic of today. The use of the F870S system leads to a considerable stress relief of the Ex p cabinet and sensitive parts like foil keyboards, windows etc.. In comparison to conventional Ex p- sys- tems, the FS870S requires a much lower cabinet pressure to achieve a comparable flow rate.
(Example: 3 liters/sec. to 0.3 liters/sec. decrease without pressure variation) Figure 5: time diagram 2.4.6 F870S - Application using „Containment Systems “ „Containment Systems“ are defined as parts of a device within a pressurized enclosure, which could emit combustible gas (or occasionally an explosive environment: zone 1, ex- plosive mixture) from within the enclosure.
F870S 2 Pressurized enclosure system F870S Page 11 Peripherals 2.5.1 Ex i- external sensory: ES872 The intrinsically safe bus interface is used to transmit measurement values from the exter- nal proportional sensor module ES872 to the control unit. This allows the integration of ad- ditional safety control features into the purge control system.
F870S 2 Pressurized enclosure system F870S Page 12 Features in operation zone 21 (Dust) 2.6.1 Purging period -> cleaning period: cleaning the housing inside In zone 21 the housing must not be purged in comparison to the operation in gas zone 1.
F870S 3 Mounting and connection Page 13 3 Installation and Connection Mounting 3.1.3 Control unit FS870S The control unit can be placed inside a hazardous area. The location (inside or outside the enclosure) as well as the position is almost arbitrary.
F870S 3 Mounting and connection Page 14 The operating tableau BT855.x has got a complete housing (protection class IP65). It can be mounted in the ex-area of Zone 1 at any place. Please refer the dimension scheme in the appendix for the position and diameter of drillings.
F870S 3 Mounting and connection Page 15 3.2.1 Connection hints Conditions for the Ex e clamps Min. and max. clamping torque min. 0,3 Nm max. 0,4 Nm Min. und Max. wire cross- section steep: 0,2 – 2,5 mm² flexible: 0,2 – 2,5 mm²...
F870S 3 Mounting and connection Page 16 3.2.3 Intrinsically safe (Ex i-) connection of FS870S Clamps Description Limits Digital input: Bypass 5,4V 6,2mA 8,3mW 100nF 0,5mH Digital input: On / Off 5,4V 6,2mA 8,3mW 100nF 0,5mH Digital input:: External alarm...
F870S 3 Mounting and connection Page 17 3.2.5 Default parameter Parameter defaults ex works. Settings Description Display Unit Language setting of FS870S English Structure Language Do you use a proportional (SVP..) or SVP3 Valve digital (SVD…) working valve Operation mode:...
F870S 3 Mounting and connection Page 18 3.2.6 Ex works parameter – Reset Do RESET : 1. Press the joystick* while powering up the device until “RESET appears on the display. 2. Enter RESET-Code: “1111” 3. Press the joystick The ex works parameter are now active.
Page 19 4 Operation The user has total control of the purging system F870S by the use the joystick on the con- trol unit FS870S respectively by using the external operating panel BT871. Operation on control unit FS870S panel BT871 is equal. Using the other operating panels only a restrict- ed operation is possible.
F870S 4 Operation Page 20 4.1.4 How to enter and leave the bypass mode Utilize bypass only, if it is sure that no explosive atmosphere is inside the cabinet! Fire certificate required! The bypass mode is denied, if it is possible that an explosive at-...
F870S 4 Operation Page 21 Parameter input and parameter query The control unit has two types of menus • operation menu • Parameter input menu 4.2.1 Operation menu Within the operation menu the user gets more information of the Ex p- system.
F870S 4 Operation Page 22 • Min.FlowPurge: • Set point Flow Purge • Set point pressure operation • Min.Flow operation • Set point Flow operation • Min. Pressure • Max. Pressure • Alarm Pressure Codes This sub menu contains the 3 code words •...
F870S 4 Operation Page 23 Alarm and malfunction indications 4.3.4 Alert Alert Reason Procedure Ext. Alert The external alarm occurred. If the ext. alert loop is not needed, switch off the monitoring of the external loop in the parameter input menu 4.3.5 Error messages...
F870S 5 Annex Page 24 5 Annex Technical Details Control unit FS870S General Mounting Inside Hazardous Area (Zone 1/21) Group 2 II G/D Ex- protection II 2 G, Ex e db mb ib [pxb] IIC T4 Gb II 2 D, Ex tb IIIC T100°C [ib] [pxb] Db...
F870S 5 Annex Page 25 Type codes Control unit FS870S Mains voltage: 110 - 230 V AC .............. 24 V DC ................. Nominal width: Standard ................Custom .................. Pressure range: Standard ..................extended Ethernet- Interface: Not installed ..................Ethernet- interface .................
F870S 5 Annex Page 29 Mounting examples Figure 12: Mounting examples Flow diagram The diagram shows the relationship between pressure inside of enclosure and the output flow. The diagram is only valid, without reducing input or output diameters as well as flow reducing pipes.
F870S 5 Annex Page 30 Block diagram Figure 13: Ext. Sen. BT871 Electrical block dia- gram ext. Druck/ BT871 Bypass ext. Alarm pressure Ex i Ventilsicherung/ use ( solenoid v a l v e) FS870S Magnetventil/ Solenoid valv e Relay1...
F870S 5 Annex Page 31 Transport, Storing, Disposal and Repairs Vibration-free in origin package, do not drop, handle carefully Transport Store the device dry, inside of the origin package Storing When the explosion proof multipurpose distribution, switching and control Disposal...
F870S 5 Annex Page 33 5.10 List of Parameters System identification Installation no.: Date: Production no.: Solenoid valve BT 8 FS870S. . Settings Description Display options Language setting of FS870S (German, English, French ..) Structure Language Do you use a proportional (SVP..) or...
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